Goods & Services

Administration of a consumer loyalty program and brand ambassador program to promote metal detectors

Goods & Services

Detectors for electrically conducting materials, namely, metal detectors, metal detectors for industrial or military purposes, metal detectors for countermine purposes, metal detectors for consumer and recreational purposes, metal detectors for gold mining purposes, metal detectors for use in conjunction with software; metal detectors with mapping and/or global positioning system functionalities; electromagnetic coils for metal detectors

Goods & Services

Detectors for electrically conducting materials, namely, metal detectors, metal detectors for industrial or military purposes, metal detectors for countermine purposes, metal detectors for consumer and recreational purposes, metal detectors for gold mining purposes, metal detectors for use in conjunction with software; metal detectors with mapping and/or global positioning system functionalities; electromagnetic coils for metal detectors

Abstract

A metal detector coil including a housing, at least one winding assembly and at least one spacer, wherein the or each winding assembly and spacer are at least partially encapsulated in a potting material poured into the housing, and wherein the or each spacer is configured to create one or more voids within the potting material, and wherein the shape, size or positioning of the voids may be adapted or configured to adjust one or more mechanical properties of the metal detector coil.

IPC Classes  ?

• G01V 3/10 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils

Abstract

A metal detector in a cover of a container, including a first winding; an inner winding with a surface area that is less than that of the first winding; and an outer winding with a surface area that is greater than that of the first winding. The inner winding is connected in series with the outer winding such that a magnetic coupling between (a) the first winding and (b) the inner and outer windings connected in series is substantially zero. Shapes, locations and numbers of turns of the inner winding and the outer winding are selected such that the metal detector is less sensitive to a metal object outside the outer winding than inside the outer winding.

IPC Classes  ?

• G01R 33/028 - Electrodynamic magnetometers
• B65F 1/16 - Lids or covers

Goods & Services

Detectors for electrically conducting materials, namely, metal detectors, metal detectors for industrial or military purposes, metal detectors for countermine purposes, metal detectors for consumer and recreational purposes, metal detectors for gold mining purposes, metal detectors for use in conjunction with software; metal detectors with mapping and/or global positioning system functionalities; electromagnetic coils for metal detectors

Abstract

A method for reducing false positives of a metal detector in detecting a target, including transmitting a transmit magnetic field; receiving a receive magnetic field to produce a receive signal; processing the receive signal using at least two different functions to produce a first signal and a second signal; the at least two different functions are configured such that the first signal is sensitive to at least one characteristic of the target, and such that the second signal is a representation of a likelihood function of the first signal, the representation of the likelihood function taking into consideration an effect of an environment upon the first signal; and classifying the receive signal into a classification of one of at least three possible classes based on at least the second signal; and producing an indicator output signal based on the classification. The indicator output signal is different for different classifications and the indicator output signal includes an audio signal.

IPC Classes  ?

• G01V 3/38 - Processing data, e.g. for analysis, for interpretation or for correction
• G01V 3/10 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils

Abstract

A metal detector transmitting, through a transmit coil, a repeating transmit signal cycle, which includes at least one receive period and at least one non-zero transmit coil reactive voltage period; and sensing a current in the transmit coil during at least one receive period to control a magnitude and/or duration of the at least one non-zero transmit coil reactive voltage period such that the average value of the current during at least one receive period of every repeating transmit signal cycle is substantially constant from cycle to cycle, and the current during at least one receive period is substantially independent of the inductance of the transmit coil.

IPC Classes  ?

• G01V 3/10 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils

Goods & Services

Detectors for electrically conducting materials, namely, metal detectors, metal detectors for industrial or military purposes, metal detectors for countermine purposes, metal detectors for consumer and recreational purposes, metal detectors for gold mining purposes, metal detectors for use in conjunction with software; ground penetrating radar apparatus; metal detectors with mapping and/or global positioning system functionalities; electromagnetic coils for metal detectors

Goods & Services

Detectors for electrically conducting materials, namely, metal detectors, metal detectors for industrial or military purposes, metal detectors for countermine purposes, metal detectors for consumer and recreational purposes, metal detectors for gold mining purposes, metal detectors for use in conjunction with software; metal detectors with mapping and/or global positioning system functionalities; electromagnetic coils for metal detectors.

Abstract

A hand-held metal detector coil, including a coil housing which houses aggregate transmit windings and aggregate receive windings. The aggregate transmit windings include a major group of transmit windings that includes a first transmit winding, and the aggregate receive windings include a major group of receive windings that includes a first receive winding; the coil further includes a minor group of windings to null the aggregate receive windings with respect to the aggregate transmit windings. In an absence of external influences, a mutual inductance coupling coefficient between the aggregate receive windings and the aggregate transmit windings, kTR, is <0.03. A mean location of turns of the major group of transmit windings is further from a bottom plane of the coil housing than a mean location of turns of the major group of receive windings; the first transmit winding has at least part of their cross-sectional winding profile with a first cross-sectional axis longer than a second cross-sectional axis by at least a factor of 3; a mutual coupling constant coefficient between the major group of transmit windings and the major group of receive windings, k11, is <0.5; and a mean location of turns of the of the first transmit winding is at least 25 mm or more from a bottom plane of the coil housing.

IPC Classes  ?

• G01V 3/10 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
• H01F 38/14 - Inductive couplings

Goods & Services

Detectors for electrically conducting materials, namely, metal detectors, metal detectors for industrial or military purposes, metal detectors for countermine purposes, metal detectors for consumer and recreational purposes, metal detectors for gold mining purposes, metal detectors for use in conjunction with software; metal detectors with mapping functionality, global positioning system functionality, or both mapping and global positioning system functionalities; electromagnetic coils for metal detectors.

Abstract

Provided is a method to detect a target using a metal detector. The method includes transmitting a repeating sequence of transmitted magnetic field into an environment. The repeating sequence of transmitted magnetic field is generated by a repeating sequence of transmitted electrical current flowing through a transmit inductive winding such that the repeating sequence of transmitted electrical current includes at least a first period of rapid change of current, followed by a first period of non-zero approximately constant current. A transition time between the first period of rapid change of current and the first period of non-zero approximately constant current is controlled by a first value of an electrical current flowing through the transmit inductive winding during the first period of rapid change of current. The first value is determined by an output of a first negative feedback loop that measures at least part of the repeating sequence of transmitted electrical current flowing through the transmit inductive winding.

IPC Classes  ?

• G01V 3/10 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils

Abstract

A method for detecting a target using a metal detector by producing at least two different modulated audio tones, by modulating a first audio tone with a first stereo audio modulator signal and modulating a second audio tone with a second stereo audio modulator signal; and applying at least the first audio tone to a left side of an audio stereo target indicator indicative of the target, and applying at least the second audio tone to a right side of the audio stereo target indicator. The modulating of the first audio tone and modulating of the second audio tone, includes one or more of the following; a modulation of a volume of a tone, a modulation of a pitch of a tone, a modulation of relative harmonics ratios of a tone, a modulation of a chord richness of a tone.

IPC Classes  ?

• G01V 3/10 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils

Abstract

A metal detector coil comprising a housing, at least one winding assembly and at least one spacer, wherein the or each winding assembly and spacer are at least partially encapsulated in a potting material poured into the housing, and wherein the or each spacer is configured to create one or more voids within the potting material, and wherein the shape, size or positioning of the voids may be adapted or configured to adjust one or more mechanical properties of the metal detector coil.

IPC Classes  ?

• G01V 13/00 - Manufacturing, calibrating, cleaning, or repairing instruments or devices covered by groups

Abstract

A metal detector in a cover of a container, comprising: a first winding; an inner winding with a surface area that is less than that of the first winding; and an outer winding with a surface area that is greater than that of the first winding; wherein the inner winding is connected in series with the outer winding such that a magnetic coupling between (a) the first winding and (b) the inner and outer windings connected in series is substantially zero; and wherein shapes, locations and numbers of turns of the inner winding and the outer winding are selected such that the metal detector is less sensitive to a metal object outside the outer winding than inside the outer winding.

IPC Classes  ?

• G01R 23/16 - Spectrum analysisFourier analysis
• G01R 27/26 - Measuring inductance or capacitanceMeasuring quality factor, e.g. by using the resonance methodMeasuring loss factorMeasuring dielectric constants
• G01R 33/00 - Arrangements or instruments for measuring magnetic variables
• G01V 3/10 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
• G06Q 50/12 - Hotels or restaurants
• A61B 5/00 - Measuring for diagnostic purposes Identification of persons
• B65F 1/00 - Refuse receptacles

Goods & Services

Surveying apparatus and instruments; high-frequency apparatus; oscillographs; inductors (electricity); probes for scientific purposes; electromagnetic coils; metal detectors; metal detectors for industrial or military purposes; detectors; antennas.

Goods & Services

Surveying apparatus and instruments; oscillographs; electricity inductors; probes for scientific purposes; electromagnetic coils; metal detectors; metal detectors for industrial or military purposes; mine detecting apparatus; antennas

Abstract

Provided is a method for detecting a metal target in soil using a metal detector including the steps of generating a transmit magnetic field for transmission into the soil using a transmit winding based on a transmit signal; receiving a first receive magnetic field using the transmit winding during a receive period to produce a first receive signal; and receiving a second receive magnetic field using a receive winding during the receive period to produce a second receive signal. The transmit winding and the receive winding are separated spatially; and producing an indicator output signal based on the first receive signal, the second receive signal and at least one synchronous demodulation function. The first receive signal includes first parameters that define a first transfer function transforming the first receive magnetic field into the first receive signal. The first parameters include an effective number of turns, a geometry of the transmit winding, and first electronic amplification transfer functions between the transmit winding and first receive signal. The second receive signal includes second parameters that define a second transfer function transforming the second receive magnetic field into the second receive signal. The second parameters include an effective number of turns, a geometry and a relative orientation of the receive winding with respect to the transmit winding, and second electronic amplification transfer functions between the receive winding and second receive signal. The first parameters and the second parameters are selected such that the first receive signal and the second receive signal are processed together to reduce or null detected signals within the indicator output signal due to received soil eddy currents from conducting soil components manifested in the first receive signal and the second receive signal; and where the selection of the first parameters relative to the second parameters are dependent on the synchronous demodulation function.

IPC Classes  ?

• G01V 3/10 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils

Abstract

Provided is a method for detecting a target using a metal detector, including transmitting a transmit magnetic field using a transmitter; determining positions of a receiver of the metal detector as the receiver changes positions; receiving receive magnetic fields due to the transmit magnetic field to produce receive signals associated with positions using the receiver and receive electronics; and producing an audio output signal. The audio output signal is dependent on one or more receive signals associated with positions related to a current determined position in a selected relationship.

IPC Classes  ?

• G01V 3/38 - Processing data, e.g. for analysis, for interpretation or for correction
• G01V 3/165 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation specially adapted for use during transport, e.g. by a person, vehicle or boat operating with magnetic or electric fields produced or modified by the object or by the detecting device
• G01V 3/10 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils

Abstract

Provided is a body of a hand-held metal detector which includes an elongated body with a first and second end; and a first connecting structure moulded directly onto the elongated body at the first end through an injection moulding process. The connecting structure includes an engaging portion configured to engage at least one attachment of the hand-held metal detector, such that the at least one attachment is supported by the elongated body through the connecting structure moulded directly onto the elongated body.

IPC Classes  ?

• G01V 3/08 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
• G01V 3/10 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
• G01V 3/165 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation specially adapted for use during transport, e.g. by a person, vehicle or boat operating with magnetic or electric fields produced or modified by the object or by the detecting device
• G01V 3/17 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation specially adapted for use during transport, e.g. by a person, vehicle or boat operating with electromagnetic waves
• G01V 13/00 - Manufacturing, calibrating, cleaning, or repairing instruments or devices covered by groups
• B29C 45/14 - Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mouldApparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles

Abstract

A body for a handheld metal detector includes a lower end configured to engage with a sensor head; an upper end including an armrest connected to an upper shaft element; and a grip element intermediate to the lower end and the upper end, the grip element including a grip portion configured to allow a user to hold the body, and a first retaining means for slidably retaining the upper shaft element such that the distance between the armrest and the grip element is able to be adjusted.

IPC Classes  ?

• G01V 3/15 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation specially adapted for use during transport, e.g. by a person, vehicle or boat
• F16B 7/14 - Telescoping systems locking in intermediate positions

Abstract

A hand-held metal detector coil, comprising a coil housing which houses aggregate transmit windings and aggregate receive windings; wherein the aggregate transmit windings comprise a major group of transmitting windings that comprise a first transmit winding, and the aggregate receives windings comprise a major group of receive windings that comprises a first receive winding; the coil further comprises a minor group of windings to null the aggregate receive windings with respect to the aggregate transmit windings; and wherein a mean location of turns of the major group of transmitting windings is further from a bottom plane of the coil housing than a mean location of turns of the major group of receive windings; the first transmit winding has at least part of their cross-sectional winding profile with a first cross-sectional axis longer than a second cross-sectional axis by at least a factor of 3.

IPC Classes  ?

• G01V 3/10 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
• G01R 33/12 - Measuring magnetic properties of articles or specimens of solids or fluids
• H02K 3/04 - Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
• H01Q 1/12 - SupportsMounting means

Goods & Services

Detectors for electrically conducting materials, namely, metal detectors, metal detectors for industrial or military purposes, metal detectors for countermine purposes, metal detectors for consumer and recreational purposes, metal detectors for gold mining purposes, metal detectors for use in conjunction with software; metal detectors with mapping and/or global positioning system functionalities; electromagnetic coils for metal detectors.

Abstract

An antenna of a handheld metal detector for detecting a target in a soil, the antenna including a housing including a bottom plane for facing the soil; two lateral sides; a front side; and a rear side; wherein the lateral sides, the front side and rear side are with respect to a user of the handheld metal detector holding and operating the handheld metal detector to detect the target in the soil; and at least one winding within the housing. A mean distance of conductors of the at least one winding near at least one of the two lateral sides of the housing is closer to the bottom plane than a mean distance of conductors of the at least one winding near at least one of the front side and rear side of the housing.

IPC Classes  ?

• H01Q 7/00 - Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
• H01Q 1/24 - SupportsMounting means by structural association with other equipment or articles with receiving set
• G01V 3/10 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
• G01V 3/165 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation specially adapted for use during transport, e.g. by a person, vehicle or boat operating with magnetic or electric fields produced or modified by the object or by the detecting device

Goods & Services

Detectors for electrically conducting materials, namely, metal detectors, metal detectors for industrial or military purposes, metal detectors for countermine purposes, metal detectors for consumer and recreational purposes, metal detectors for gold mining purposes, metal detectors for use in conjunction with software; metal detectors with mapping and/or global positioning system functionalities; electromagnetic coils for metal detectors.

Abstract

A metal detector for detecting a target, the metal detector including: a transmitter for transmitting a transmitted magnetic field; a receiver, including a winding with a plurality of turns, for receiving a magnetic field; and a receive electronics connected to the winding for receiving signals from the winding. The receiver further includes an electrostatic screen covering at least part of the winding. The electrostatic screen is connected to an electronic circuit to receive signals from the receiver to reduce an effective capacitance presented by the electrostatic screen to the winding.

IPC Classes  ?

• G01V 3/10 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
• G01V 3/165 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation specially adapted for use during transport, e.g. by a person, vehicle or boat operating with magnetic or electric fields produced or modified by the object or by the detecting device

Abstract

A winding of an antenna of a metal detector, the winding includes multi-turn wire with both ends connected to the metal detector; and at least one resistive component for connecting a first part of the winding to a second part of the winding. The first part or the second part are not both ends of the winding. The resistive component is configured to damp an internal resonance of the winding with an order greater than 1.

IPC Classes  ?

• G01V 3/10 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
• G01V 3/165 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation specially adapted for use during transport, e.g. by a person, vehicle or boat operating with magnetic or electric fields produced or modified by the object or by the detecting device

Abstract

A method for detecting a target using a metal detector, comprising: transmitting a transmit magnetic field using a transmitter; determining positions of a receiver of the metal detector as the receiver changes positions; receiving receive magnetic fields due to the transmit magnetic field to produce receive signals associated with positions using the receiver and receive electronics; producing an audio output signal, wherein the audio output signal is dependent on one or more receive signals associated with positions related to a current determined position in a selected relationship.

IPC Classes  ?

• G01V 3/165 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation specially adapted for use during transport, e.g. by a person, vehicle or boat operating with magnetic or electric fields produced or modified by the object or by the detecting device
• G01V 3/38 - Processing data, e.g. for analysis, for interpretation or for correction

Abstract

A method for detecting a target using a metal detector, including: transmitting a transmit magnetic field using a transmitter; receiving a receive magnetic field due to the transmit magnetic field to produce a receive signal using a receiver and receive electronics; processing the receive signal using at least one function to produce an indicator output, wherein the at least one function is controllable such that the properties of the indicator output is controllable in terms of: (a) an amount of cancellation of signals due to soil; wherein the amount of cancellation of signals due to soil is higher than an amount of cancellation of signals due to the target; and (b) a sensitivity of the indicator output to the target and broadband electromagnetic interference (EMI); wherein controlling the at least one function in a particular direction changes the at least one function from a first state more suitable for high ground response environments to a second state more suitable for medium ground response environments; and controlling the at least one function again in the particular direction changes the at least one function from the second state more suitable for medium ground response environments to a third state more suitable for low ground response environments; and wherein when compared to the first state, the second state provides an indicator output that is more sensitive to a target, more sensitive to broadband EMI and more sensitive to the ground response; and when compared to the second state, the third state provides an indicator output that is more sensitive to a target, at least about as sensitive to broadband EMI and more sensitive to the ground.

IPC Classes  ?

• G01V 3/10 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
• G01V 3/165 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation specially adapted for use during transport, e.g. by a person, vehicle or boat operating with magnetic or electric fields produced or modified by the object or by the detecting device

Abstract

A body for a handheld metal detector, the body comprising: a lower end configured to engage with a sensor head; an upper end comprising an armrest connected to an upper shaft element; and a grip element intermediate to the lower end and the upper end, the grip element comprising a grip portion configured to allow a user to hold the body, and a first retaining means for slidably retaining the upper shaft element such that the distance between the armrest and the grip element is able to be adjusted.

IPC Classes  ?

• B25G 1/04 - Handle constructions telescopicHandle constructions extensibleHandle constructions sectional
• F16B 7/14 - Telescoping systems locking in intermediate positions
• G01V 3/12 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation operating with electromagnetic waves

Goods & Services

Detectors for electrically conducting materials, namely, metal detectors, metal detectors for industrial or military purposes, metal detectors for countermine purposes, metal detectors for consumer and recreational purposes, metal detectors for gold mining purposes, metal detectors for use in conjunction with software; metal detectors with mapping and/or global positioning system functionalities; electromagnetic coils for metal detectors.

Goods & Services

Detectors for electrically conducting materials, namely, metal detectors, metal detectors for industrial or military purposes, metal detectors for countermine purposes, metal detectors for consumer and recreational purposes, metal detectors for gold mining purposes, metal detectors for use in conjunction with software; metal detectors with mapping and/or global positioning system functionalities; electromagnetic coils for metal detectors

Goods & Services

Metal detectors for detecting and preventing tableware, serving-ware, and utensils from being discarded in waste containers, for the restaurant and hospitality industry.

Goods & Services

Metal detectors for detecting and preventing tableware, serving-ware, and utensils from being discarded in waste containers, for the restaurant and hospitality industry

Goods & Services

Detectors for electrically conducting materials, namely, metal detectors, metal detectors for industrial or military purposes, metal detectors for countermine purposes, metal detectors for consumer and recreational purposes, metal detectors for gold mining purposes, metal detectors for use in conjunction with software; ground penetrating radar; metal detectors with mapping and/or global positioning system functionalities; electromagnetic coils for metal detectors.

Goods & Services

Detectors for electrically conducting materials, namely, metal detectors, metal detectors for industrial or military purposes, metal detectors for countermine purposes, metal detectors for consumer and recreational purposes, metal detectors for gold mining purposes, metal detectors for use in conjunction with software; ground penetrating radar machines and apparatus; metal detectors with mapping and/or global positioning system functionalities; electromagnetic coils for metal detectors

Abstract

A method for assisting a detection of a target by a metal detector, including: determining positions of a sensor head of the metal detector with respect to a coordinate system; transmitting a transmit magnetic field using a transmitter; receiving a receive magnetic field due to the transmit magnetic field using a receiver within the sensor head when the sensor head is at a determined position and associating the receive magnetic field with the determined position; analysing the receive magnetic field to determine useful information; storing the useful information associated to the determined position; repeating the steps of determining, transmitting, receiving, analysing and storing during a use of the metal detector; presenting, using a visual display, data based on selected stored useful information to a user of the metal detector, wherein the useful information is selected based on the following: a) a current position of the sensor head; and b) useful information associated with the current position or positions within a certain distance from the current position, or both; wherein the selection is adapted and configured to avoid or reduce cluttering of data on the visual display.

IPC Classes  ?

• G06F 16/587 - Retrieval characterised by using metadata, e.g. metadata not derived from the content or metadata generated manually using geographical or spatial information, e.g. location
• G01V 3/08 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices

Abstract

A method for improving a performance of a metal detector, including: determining positions of a sensor head of the metal detector with respect to a coordinate system as the sensor head is moved on top of a ground; processing a receive signal received by the sensor head to produce a substantially ground balanced signal that is substantially insensitive to signals due to the ground; and actively controlling the step of processing based on one or more of the determined positions as the metal detector is moved on top of the ground; wherein, during a continuous use of the metal detector, the determined positions are processed to control, without any instruction or indication from an operator of the metal detector to do so, the step of processing the receive signal to produce the substantially ground balanced signal.

IPC Classes  ?

• G06F 11/30 - Monitoring
• G01V 3/38 - Processing data, e.g. for analysis, for interpretation or for correction
• G01V 3/15 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation specially adapted for use during transport, e.g. by a person, vehicle or boat
• G01V 3/08 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
• G01V 99/00 - Subject matter not provided for in other groups of this subclass

Abstract

A method for improving a metal detector, including: processing at least one receive signal due to a receive magnetic field using at least two functions to produce two processed signals, the at least two functions are selected such that the first processed signal is more sensitive to deeply buried targets than the second processed signal; and the second processed signal is more sensitive to shallow-buried conductive objects with characteristic frequency greater than 100 kHz than the first processed signal but not sensitive to saline soil, and that the two processed signals substantially complement each other in terms of sensitivity to targets in terms of target frequency and detection depth; and processing the two processed signals to produce at least one output signal which is sensitive to deeply buried low-frequency targets, shallow-buried low-frequency targets and shallow-buried high-frequency targets while signals due to saline soil are substantially rejected from the output signal.

IPC Classes  ?

• G01V 3/38 - Processing data, e.g. for analysis, for interpretation or for correction
• G01V 3/10 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
• G01V 3/14 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation operating with electron or nuclear magnetic resonance

Goods & Services

Metal detectors; antenna; surveying apparatus and instruments; high-frequency apparatus; oscillographs; inductors (electricity); probes for scientific purposes; metal detectors for industrial or military purposes; electromagnetic coils; detectors.

Goods & Services

Metal detectors; [ antennas; ] surveying instruments; electrical inductors; probes for scientific purposes; metal detectors for industrial or military purposes; electromagnetic coils

Abstract

A method for detecting an electrically conductive target in soil using a metal detector including the steps of: generating a transmit magnetic field for transmission into the soil based on the transmit signal; receiving a receive magnetic field; providing a receive signal induced by the receive magnetic field; determining a noise in the receive signal or a signal to noise ratio of the receive signal; and estimating, based on either the noise in the receive signal, or the signal to noise ratio of the received signal, or both, at least one effective detection depth of one or more types of electrically conductive targets in the soil.

IPC Classes  ?

• G01V 3/28 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation specially adapted for well-logging operating with magnetic or electric fields produced or modified either by the surrounding earth formation or by the detecting device using induction coils
• G01V 3/38 - Processing data, e.g. for analysis, for interpretation or for correction
• G01V 3/10 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
• G01V 3/165 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation specially adapted for use during transport, e.g. by a person, vehicle or boat operating with magnetic or electric fields produced or modified by the object or by the detecting device
• G01V 3/08 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices

Goods & Services

Promotion, advertising of business; marketing.

Goods & Services

Detectors for electrically conducting materials, namely, metal detectors, metal detectors for industrial or military purposes, metal detectors for countermine purposes, metal detectors for consumer and recreational purposes, metal detectors for gold mining purposes, metal detectors for use in conjunction with software; ground penetrating radar; metal detectors with mapping and/or global positioning system functionalities; electromagnetic coils for metal detectors.

Abstract

A metal detector, includes a transmitter for transmitting a repeating sequence of transmit magnetic field, each of the sequence includes a period of changing or constant non-zero transmit magnetic field, immediately followed by period of rapid change of transmit magnetic field, immediately followed by a period of substantially constant or zero transmit magnetic field; a receive coil; and a damping resistor. An end of the receive coil is connected to one end of the damping resistor and the other end of the damping resistor is connectable to a circuit with a variable parameter. A signal is induced in the receive coil during the period of rapid change of transmit magnetic field, and the signal induced in the receive coil decays at least at a termination of the period of rapid change of transmit magnetic field.

IPC Classes  ?

• G01V 3/10 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
• G01V 3/02 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation operating with propagation of electric current
• G01V 3/15 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation specially adapted for use during transport, e.g. by a person, vehicle or boat
• G01V 3/38 - Processing data, e.g. for analysis, for interpretation or for correction

Goods & Services

Sales promotion services, advertising services in the field of business; marketing services

Goods & Services

Detectors for electrically conducting materials, namely, metal detectors, metal detectors for industrial or military purposes, metal detectors for countermine purposes, metal detectors for consumer and recreational purposes, metal detectors for gold mining purposes, metal detectors for use in conjunction with software; ground penetrating radar apparatus; metal detectors with mapping and/or global positioning system functionalities; electromagnetic coils for metal detectors

Goods & Services

Detectors for electrically conducting materials, namely, metal detectors, metal detectors for industrial or military purposes, metal detectors for countermine purposes, metal detectors for consumer and recreational purposes, metal detectors for gold mining purposes, metal detectors for use in conjunction with software; metal detectors with mapping and/or global positioning system functionalities; electromagnetic coils for metal detectors. Advertising, promotional and instructional material for metal detectors and metal detection accessories.

Goods & Services

Detectors for electrically conducting materials, namely, metal detectors, metal detectors for industrial or military purposes, metal detectors for countermine purposes, metal detectors for consumer and recreational purposes, metal detectors for gold mining purposes, metal detectors for use in conjunction with software; metal detectors with mapping and/or global positioning system functionalities; electromagnetic coils for metal detectors.

Goods & Services

Detectors for electrically conducting materials, namely, metal detectors, metal detectors for industrial or military purposes, metal detectors for countermine purposes, metal detectors for consumer and recreational purposes, metal detectors for gold mining purposes, metal detectors for use in conjunction with software; metal detectors with mapping and/or global positioning system functionalities; electromagnetic coils for metal detectors

Goods & Services

Detectors for electrically conducting materials, namely, metal detectors, metal detectors for industrial or military purposes, metal detectors for countermine purposes, metal detectors for consumer and recreational purposes, metal detectors for gold mining purposes, metal detectors for use in conjunction with software; metal detectors with mapping and/or global positioning system functionalities; electromagnetic coils for metal detectors Printed instructional material for metal detectors and metal detection accessories; advertising and promotional material for metal detectors and metal detection accessories of others, namely, advertising posters, advertising pamphlets, advertising signs of cardboard and paper

Goods & Services

Detectors for electrically conducting materials, namely, metal detectors, metal detectors for industrial or military purposes, metal detectors for countermine purposes, metal detectors for consumer and recreational purposes, metal detectors for gold mining purposes, metal detectors for use in conjunction with software; metal detectors with mapping and/or global positioning system functionalities; electromagnetic coils for metal detectors.

Goods & Services

Detectors for electrically conducting materials, namely, metal detectors, metal detectors for industrial or military purposes, metal detectors for countermine purposes, metal detectors for consumer and recreational purposes, metal detectors for gold mining purposes, metal detectors for use in conjunction with software; metal detectors with mapping and/or global positioning system functionalities; electromagnetic coils for metal detectors.

Goods & Services

Detectors for electrically conducting materials, namely, metal detectors, metal detectors for industrial or military purposes, metal detectors for countermine purposes, metal detectors for consumer and recreational purposes, metal detectors for gold mining purposes, metal detectors for use in conjunction with software; metal detectors with mapping and/or global positioning system functionalities [ ; electromagnetic coils for metal detectors ]

Goods & Services

Detectors for electrically conducting materials, namely, metal detectors, metal detectors for industrial or military purposes, metal detectors for countermine purposes, metal detectors for consumer and recreational purposes, metal detectors for gold mining purposes, metal detectors for use in conjunction with software; metal detectors with mapping and/or global positioning system functionalities; electromagnetic coils for metal detectors.

Goods & Services

Detectors for electrically conducting materials, namely, metal detectors, metal detectors for industrial or military purposes, metal detectors for countermine purposes, metal detectors for consumer and recreational purposes, metal detectors for gold mining purposes, metal detectors for use in conjunction with software; metal detectors with mapping and/or global positioning system functionalities; electromagnetic coils for metal detectors.

Goods & Services

Detectors for electrically conducting materials, namely, metal detectors, metal detectors for industrial or military purposes, metal detectors for countermine purposes, metal detectors for consumer and recreational purposes, metal detectors for gold mining purposes, metal detectors for use in conjunction with software; metal detectors with mapping and/or global positioning system functionalities [ ; electromagnetic coils for metal detectors ]

Goods & Services

Detectors for electrically conducting materials, namely, metal detectors, metal detectors for industrial or military purposes, metal detectors for countermine purposes, metal detectors for consumer and recreational purposes, metal detectors for gold mining purposes, metal detectors for use in conjunction with software; metal detectors with mapping and/or global positioning system functionalities [ ; electromagnetic coils for metal detectors ]

Abstract

A method for detecting a target in a soil using a metal detector, including: generating a transmit magnetic field for transmission into the soil based on a transmit signal; receiving a receive magnetic field; providing a receive signal induced by the receive magnetic field; processing the receive signal for producing a set of data which has effects of signals from the soil reduced therein or removed therefrom; producing at least two components of a form of at least one time constant spectrum based on the set of data; and producing, at least one indicator output signal based on the at least two components for indicating the presence and/or identity of the target when the target is within, an influence of the transmit magnetic field.

IPC Classes  ?

• G01V 3/165 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation specially adapted for use during transport, e.g. by a person, vehicle or boat operating with magnetic or electric fields produced or modified by the object or by the detecting device
• G01V 3/10 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils

Goods & Services

Hand tools, implements and equipment for rock and metal prospecting, namely gold panning tools, including pans, classifiers, buckets and sieves.

Goods & Services

Detectors and associated accessories for electrically conducting materials, namely, metal detectors, metal detectors for industrial or military purposes, metal detectors for countermine purposes, metal detectors for consumer and recreational purposes, metal detectors for gold mining purposes, metal detectors for use in conjunction with software; metal detectors with mapping and/or global positioning system functionalities; electromagnetic coils for metal detectors; audio interfacing equipment for metal detectors; power supply systems for metal detectors; protective accessories for metal detectors; mechanical and electrical interfaces to metal detectors. Instructional and teaching materials; printed matter.

Abstract

A method for detecting a target in a soil using a metal detector, including: generating a transmit magnetic field for transmission into the soil based on a transmit signal; receiving a receive magnetic field; providing a receive signal induced by the receive magnetic field; determining, based on the receive signal, a model of at least two independent components of the receive signal which are due to signals from the soil; processing the receive signal to produce a set of data which is with effects of the signals from the soil reduced therein or removed therefrom by fitting the model to the receive signal, then subtracting the fitted model from the receive signal; and producing, based on the set of data, an indicator output signal for indicating a presence and/or identity of the target.

IPC Classes  ?

• G01V 3/10 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
• G01V 3/38 - Processing data, e.g. for analysis, for interpretation or for correction
• G01V 3/02 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation operating with propagation of electric current
• G01V 99/00 - Subject matter not provided for in other groups of this subclass

Goods & Services

Detectors for electrically conducting materials, namely, metal detectors, metal detectors for industrial or military purposes, metal detectors for countermine purposes, metal detectors for consumer and recreational purposes, metal detectors for gold mining purposes, metal detectors for use in conjunction with software; metal detectors with mapping and/or global positioning system functionalities; electromagnetic coils for metal detectors.

Abstract

A method for reducing unwanted signals, due to a back emf decay, within a receive signal received by a receive coil of a metal detector during a demodulation of the receive signal after a transmission by a transmit coil of the metal detector, including controlling a T/R switch to control a characteristic of the back emf decay to reduce a duration of the period of the back emf decay.

IPC Classes  ?

• G01V 3/10 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils

Abstract

A method for detecting an electrically conductive target in soil using a metal detector, including the steps of: processing a receive signal using at least two different functions for producing at least two processed signals, each of the processed signals is at least partly insensitive to at least one unwanted signal due to the soil or an electromagnetic interference noise; determining a noise level of each of the at least two processed signals for producing at least two noise signals; and producing, from at least one of the at least two processed signals, an indicator output signal indicative of the presence of the electrically conductive target when the electrically conducting target is within the influence of a transmit magnetic field transmitted by the metal detector; wherein the step of producing an indicator output signal is dependent upon characteristics of the at least two noise signals.

IPC Classes  ?

• G01V 1/00 - SeismologySeismic or acoustic prospecting or detecting
• G01V 3/10 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils

Abstract

A method for reducing a delay, between a transition of a transmission of a metal detector and a process of a receive signal received by a receive coil of the metal detector, due to a critically damped time constant of the receive coil, including: introducing a negative capacitance into the receive coil to reduce the critically damped time constant.

IPC Classes  ?

• G01R 35/00 - Testing or calibrating of apparatus covered by the other groups of this subclass
• G01R 27/26 - Measuring inductance or capacitanceMeasuring quality factor, e.g. by using the resonance methodMeasuring loss factorMeasuring dielectric constants
• G01V 3/10 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils

Goods & Services

Detectors for electrically conducting materials, namely, metal detectors, metal detectors for industrial or military purposes, metal detectors for countermine purposes, metal detectors for consumer and recreational purposes, metal detectors for gold mining purposes, metal detectors for use in conjunction with software; metal detectors with mapping and/or global positioning system functionalities; electromagnetic coils for metal detectors.

Abstract

A method for detecting a target in a soil using a metal detector, including: generating a transmit magnetic field for transmission into the soil based on a transmit signal; receiving a receive magnetic field; providing a receive signal induced by the receive magnetic field; processing the receive signal for producing a set of data which has effects of signals from the soil reduced therein or removed therefrom; producing at least two components of a form of at least one time constant spectrum based on the set of data; and producing, at least one indicator output signal based on the at least two components for indicating the presence and/or identity of the target when the target is within, an. influence of the transmit magnetic field.

IPC Classes  ?

• G01V 3/11 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils for detecting conductive objects, e.g. firearms, cables or pipes
• G01V 3/38 - Processing data, e.g. for analysis, for interpretation or for correction
• G01R 33/00 - Arrangements or instruments for measuring magnetic variables

Abstract

A method for detecting a target in a soil using a metal detector, including: generating a transmit magnetic field for transmission into the soil based on a transmit signal; receiving a receive magnetic field; providing a receive signal induced by the receive magnetic field; determining, based on the receive signal, a model of at least two independent components of the receive signal which are due to signals from the soil; processing the receive signal to produce a set of data which is with effects of the signals from the soil reduced therein or removed therefrom by fitting the model to the receive signal, then subtracting the fitted model from the receive signal; and producing, based on the set of data, an indicator output signal for indicating a presence and/or identity of the target.

IPC Classes  ?

• G01V 3/11 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils for detecting conductive objects, e.g. firearms, cables or pipes
• G01V 3/38 - Processing data, e.g. for analysis, for interpretation or for correction
• G01R 33/00 - Arrangements or instruments for measuring magnetic variables

Goods & Services

Detectors for electrically conducting materials, namely, metal detectors, [ metal detectors for industrial or military purposes, metal detectors for countermine purposes, ] metal detectors for consumer and recreational purposes, metal detectors for gold mining purposes, metal detectors for use in conjunction with software; metal detectors with mapping and/or global positioning system functionalities [ ; electromagnetic coils for metal detectors ]

Abstract

A method for detecting a change of an impedance of a magnetic field receiver of a metal detector, including: having a first network of passive components, including the impedance of the magnetic field receiver; having a second network of passive components, excluding the impedance of the magnetic field receiver; and processing a first measurement signal from a first node of the first network with a second measurement signal from a second node of the second network to detect the change in the impedance of the magnetic field receiver; wherein the first network, the second network, the first node, the second node is configured such that in an absence of an external influence which affects the impedance of the magnetic field receiver, the first measurement signal is substantially the same with the second measurement signal; and in a presence of the external influence, the first measurement signal is different from the second measurement signal.

IPC Classes  ?

• A61B 5/05 - Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fieldsMeasuring using microwaves or radio waves
• G01R 33/00 - Arrangements or instruments for measuring magnetic variables
• G01V 3/08 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices

Goods & Services

Detectors for electrically conducting materials, namely, metal detectors, metal detectors for industrial or military purposes, metal detectors for countermine purposes, metal detectors for consumer and recreational purposes, metal detectors for gold mining purposes, metal detectors for use in conjunction with software; metal detectors with mapping and/or global positioning system functionalities; electromagnetic coils for metal detectors.

Goods & Services

Detectors for electrically conducting materials, namely, metal detectors, [ metal detectors for industrial or military purposes, metal detectors for countermine purposes, ] metal detectors for consumer and recreational purposes, metal detectors for gold mining purposes, metal detectors for use in conjunction with software [ ; metal detectors with mapping and/or global positioning system functionalities; electromagnetic coils for metal detectors ]

Abstract

A method for detecting an electrically conductive target in a soil using a metal detector, including: generating a transmit magnetic field for transmission into the soil based on a transmit signal; receiving a receive magnetic field; providing a receive signal induced by the receive magnetic field; processing the receive signal to produce a processed signal; processing a duration of the receive signal, the duration begins after a time the processed signal exceeds a threshold value and ends after a time the processed signal no longer exceeds the threshold value, to produce more than one estimations indicative of a presence of the electrically conductive target when the target is within an influence of the transmit magnetic field; and presenting graphically the more than one estimations.

IPC Classes  ?

• G01V 3/10 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils

Abstract

A method for detecting an electrically conductive target in a soil using a metal detector, including: generating a transmit magnetic field for transmission into the soil based on a transmit signal; receiving a receive magnetic field; providing a receive signal induced by the receive magnetic field; processing the receive signal to produce a processed signal; processing a duration of the receive signal, the duration begins after a time the processed signal exceeds a threshold value and ends after a time the processed signal no longer exceeds the threshold value, to produce more than one estimations indicative of a presence of the electrically conductive target when the target is within an influence of the transmit magnetic field; and presenting graphically the more than one estimations.

IPC Classes  ?

• G01V 3/08 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
• G01V 3/38 - Processing data, e.g. for analysis, for interpretation or for correction
• G01V 3/36 - Recording data

Abstract

A method for reducing a delay, between a transition of a transmission of a metal detector and a process of a receive signal received by a receive coil of the metal detector, due to a critically damped time constant of the receive coil, including : introducing a negative capacitance into the receive coil to reduce the critically damped time constant.

IPC Classes  ?

• G01V 3/00 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation
• G01V 13/00 - Manufacturing, calibrating, cleaning, or repairing instruments or devices covered by groups

Abstract

A metal detector has one or more feedback loops to control its repeating transmit signal cycle so that there is no reactive voltage drop across the transmit coil of the metal detector during at least one receive period of the metal detector.

IPC Classes  ?

• G01V 3/10 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
• G01V 3/15 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation specially adapted for use during transport, e.g. by a person, vehicle or boat

Abstract

A method for detecting electrically conductive targets in soil including the steps of: generating a transmit magnetic field for transmission into the soil based on a transmit signal; receiving a receive magnetic field; providing a receive signal induced by the receive magnetic field; selecting at least two models, each approximating a form of a signal due to a different type of source; processing the receive signal using the at least two models to produce at least two independent signals, each representing a component of the receive signal due to a different type of source; and producing, based on at least two independent signals, an indicator output signal indicative of the presence of the electrically conductive target.

IPC Classes  ?

• G01V 3/08 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
• G01V 3/10 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
• G01V 3/30 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation specially adapted for well-logging operating with electromagnetic waves

Goods & Services

Metal detectors; metal detectors for industrial or military purposes; [ electromagnetic coils for metal detectors ]

Abstract

A method for detecting electrically conductive targets in soil including the steps of: generating a transmit magnetic field for transmission into the soil based on a transmit signal; receiving a receive magnetic field; providing a receive signal induced by the receive magnetic field; selecting at least two models, each approximating a form of a signal due to a different type of source; processing the receive signal using the at least two models to produce at least two independent signals, each representing a component of the receive signal due to a different type of source; and producing, based on at least two independent signals, an indicator output signal indicative of the presence of the electrically conductive target.

IPC Classes  ?

• G01V 3/10 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils

Goods & Services

Metal detection equipment; detectors for electrically conducting materials including metal detectors. Instructional and teaching materials; printed matter. Installation, maintenance and repair services relating to electrical apparatus and instruments.

Goods & Services

Detectors for electrically conducting materials including metal detectors. Instructional and teaching materials; printed matter. Installation, maintenance and repair services relating to electrical apparatus and instruments.

Abstract

A method for recording information in relation to a use of a metal detector such that the use of the metal detector can be presented visually, including producing positional data indicative of the position of the metal detector relative to a location; and associating, with each of the positional data, information regarding one or more of: a) settings of the metal detector; b) a time; c) characteristics of the ground; d) measurement data indicative of a target, signals from the target fulfilling one or more preselected criteria; and e) one or more functions performed by the metal detector.

IPC Classes  ?

• G01V 3/12 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation operating with electromagnetic waves
• F41H 11/12 - Means for clearing land minefieldsSystems specially adapted for detection of landmines
• G01S 5/16 - Position-fixing by co-ordinating two or more direction or position-line determinationsPosition-fixing by co-ordinating two or more distance determinations using electromagnetic waves other than radio waves
• B63G 7/06 - Mine-sweeping meansMeans for destroying mines of electromagnetic type
• G01B 7/00 - Measuring arrangements characterised by the use of electric or magnetic techniques
• G01S 13/88 - Radar or analogous systems, specially adapted for specific applications
• E21B 47/00 - Survey of boreholes or wells
• G01S 3/28 - Systems for determining direction or deviation from predetermined direction using amplitude comparison of signals derived simultaneously from receiving antennas or antenna systems having differently-oriented directivity characteristics

Goods & Services

Metal detectors.

Abstract

A method for triggering one or more predetermined functions during a detection of a target in a soil, including: transmitting a transmit magnetic field; receiving a receive magnetic field using a magnetic field receiver to produce a receive signal; detecting a movement of the magnetic field receiver relative to the soil; analysing the movement to produce an analysis result; and performing, based on the analysis result, one or more of the one or more predetermined functions.

IPC Classes  ?

• G01V 3/08 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices

Abstract

A method for improving a performance of a metal detector, including: generating a transmit signal; generating a transmit magnetic field based on the transmit signal for transmission using a magnetic field transmitter; sending a receive signal based on a receive magnetic field received by a magnetic field receiver to a processing unit of the metal detector; sending a communication signal, including information from a sensor, to the processing unit; and processing the receive signal with the communication signal to produce an indicator output signal indicating a presence of a target under an influence of the transmit magnetic field; wherein one or more characteristics of the communication signal are selected based on the transmit signal to reduce or avoid an interference of the communication signal to the receive signal.

IPC Classes  ?

• G01V 3/10 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils

Abstract

The present invention relates to a method for detecting an electrically conducting target in soil, including the steps of generating a repeating transmit signal cycle of a fundamental period using transmit electronics, the repeating transmit signal cycle including a first period and a second period within each fundamental period; generating a transmit magnetic field using a magnetic field transmitter, based on the repeating transmit signal cycle, for transmission into the soil; receiving a receive magnetic field using a magnetic field receiver; producing a receive signal induced by the receive magnetic field; arranging for a current flowing through the magnetic field transmitter to flow to a first potential through a damping resistor during the second period for providing a damping effect on the current flowing through the magnetic field transmitter; arranging for the current flowing through the magnetic field transmitter to flow to a second potential, predominantly through an alternative path with a lower resistance than the damping resistor during the first period; monitoring the current flowing through the magnetic field transmitter to provide a control signal, the control signal, in effect, causing the second period to begin when the current flowing through the magnetic field transmitter is substantially zero; and processing the receive signal during at least part of the repeating transmit signal cycle to produce an indicator signal indicating the presence of an electrically conducting target when the target is within the influence of the transmit magnetic field.

IPC Classes  ?

• G01V 3/10 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils

Goods & Services

Metal detectors.

Goods & Services

Metal detectors.

Goods & Services

Metal detectors

Abstract

A highly flexible real-time metal detector platform which has a detection capability for different targets and applications, where the operator is able to alter synchronous demodulation multiplication functions to select different types or mixtures of different types to be applied to different synchronous demodulators, and also different waveforms of the said synchronous demodulation multiplication functions; examples of the different types being time-domain, square-wave, sine-wave or receive signal weighted synchronous demodulation multiplication functions. The operator can alter the fundamental frequency of the repeating switched rectangular-wave voltage sequence, and an operator may alter the waveform of the repeating switched rectangular-wave voltage sequence and corresponding synchronous demodulation multiplication functions.

IPC Classes  ?

• G08B 21/00 - Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for

Abstract

The present invention relates to a method for detecting an electrically conducting target in soil, including the steps of generating a repeating transmit signal cycle of a fundamental period using transmit electronics, the repeating transmit signal cycle including a first period and a second period within each fundamental period; generating a transmit magnetic field using a magnetic field transmitter, based on the repeating transmit signal cycle, for transmission into the soil; receiving a receive magnetic field using a magnetic field receiver; producing a receive signal induced by the receive magnetic field; arranging for a current through the magnetic field transmitter to flow to a first potential through a damping resistor during the second period for providing a damping effect on the current through the magnetic field transmitter; arranging for the current through the magnetic field transmitter to flow to a second potential, predominantly through an alternate path with a lower resistance than the damping resistor during the first period; monitoring the current through the magnetic field transmitter to provide a control signal, the control signal, in effect, causing the second period to begin when the current through the magnetic field transmitter is substantially zero; and processing the receive signal during at least part of the repeating transmit signal cycle to produce an indicator signal indicating the presence of an electrically conducting target when the target is within the influence of the transmit magnetic field.

IPC Classes  ?

• G01V 3/10 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils

Abstract

A method for improving a sensitivity of a metal detector by reducing an unwanted magnetic field generated by at least one electrically conductive element of the metal detector, the metal detector transmitting a transmit magnetic field into a soil and a possible target within the soil which in response generate a response magnetic field, the method including the step of: redirecting at least a portion of the response magnetic field from entering the at least one electrically conductive element, wherein otherwise the at least one electrically conductive element within an influence of the response magnetic field generates the unwanted magnetic field due to a change in an intensity of the response magnetic field entering the at least one electrically conductive element, the redirecting adapted to reduce or eliminate the unwanted magnetic field generated by the at least one electrically conductive element thereby improving the sensitivity of the metal detector.

IPC Classes  ?

• G01V 3/26 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation specially adapted for well-logging operating with magnetic or electric fields produced or modified either by the surrounding earth formation or by the detecting device
• H05K 9/00 - Screening of apparatus or components against electric or magnetic fields

Abstract

An electronic metal detector having, a transmit coil arranged and adapted to transmit an alternating magnetic field associated with a reactive transmit coil voltage, the transmit coil being connected to transmit electronics arranged and adapted to generate a transmit signal, the transmit electronics having at least two power sources, a first power source and a second power source, wherein the first power source is adapted and arranged to connect to the transmit coil for at least a first period, and the second power source is adapted and arranged to connect to tie transmit coil for at least a second period, the said transmit electronics including at least one servo control negative feedback loop, a first servo control negative feedback loop, which is adapted and arranged to monitor a transmit coil current for at least part of the said first period, and to control at least part of the said transmit signal, the transmit electronics being adapted and arranged to control the transmit signal to produce the reactive transmit coil voltage to be approximately constant and approximately equal to zero while the transmit coil current is non-zero and approximately constant for at least part of the first period; and receive electronics which are adapted and arranged to receive and process a receive magnetic field during at least some of the first period to produce an indicator output.

IPC Classes  ?

• G01V 3/10 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils

Abstract

An apparatus for detecting a target including' a supporting body; a metal detector system including a sensor head, supported by and able to be moved independently of the supporting body, to transmit a transmit signal and to receive a first signal, the first signal includes signals due to the target and the supporting body; a sensor for producing a second signal indicative of movement or position of the sensor head relative to the supporting body; and a processor for processing the first signal, the processing includes substantially cancelling the signals due to the supporting body from the first signal using the second signal, to produce an indicator signal indicating the presence of the target.

IPC Classes  ?

• F41H 11/16 - Self-propelled mine-clearing vehiclesMine-clearing devices attachable to vehicles
• G01V 3/11 - Electric or magnetic prospecting or detectingMeasuring magnetic field characteristics of the earth, e.g. declination or deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils for detecting conductive objects, e.g. firearms, cables or pipes
• B63G 7/06 - Mine-sweeping meansMeans for destroying mines of electromagnetic type
• G01V 3/38 - Processing data, e.g. for analysis, for interpretation or for correction