A method of manufacturing a screw having a predetermined thread geometry and a screw tip, comprising the steps of: providing a screw blank having a first diameter, the screw blank having a first end corresponding to the leading end of the screw to be manufactured from the screw blank and a second end corresponding to the trailing end of the screw to be manufactured from the screw blank; reducing the first diameter to a second diameter in a first portion adjacent to the first end of the screw blank; processing the blank in said first portion by rolling with flat dies to form a thread in the first portion and said tip as a threaded tip at the first end; and processing the blank in a second portion adjoining the first portion by rolling in an axial continuous process to form a thread in the second portion which continuously continues the thread in the first portion, wherein the first and second diameters of the screw blank are each selected such that during processing in steps C and D a uniform or at least approximately uniform thread having the predetermined thread geometry is formed which extends over the first and second portions.
A method is defined for attaching mounted parts on a mounting substrate, formed of concrete or masonry, having a group of anchors, wherein the following is true for the ratio VSd/NSd of the rated value for the transverse load VSd and of the rated value of the tensile load NSd of at least one anchor in the anchor group: VSd/NSd≥0.3, preferably VSd/NSd≥0.6 and particularly preferably VSd/NSd≥1.0, and wherein the characteristic resistances of these anchors to transverse loading VRk or to tensile loading NRk satisfy the following relationship: VRk/NRk≤1.1. The at least one anchor of the anchor group is inclined at an angle αAnker to the perpendicular to the surface of the mounting substrate in such a manner that the following is true: αAnker=k*¾*arctan (VSd/NSd) for NSd>0, and αAnker=k*67.5° for NSd=0, where: 0.8≤k≤1.34, providing that αAnker≤75°.
The invention relates to a system for joining two components or for reinforcing a component, comprising a first and a second threaded sleeve which each comprise the following: an outer thread, with the aid of which the threaded sleeve can be screwed into the respective component and which is suitable to form a composite with the respective component, and a power drive, by which a torque for screwing the threaded sleeve into the respective component can be transmitted to the threaded sleeve. The system further comprises an elongate clamping element which is suitable to be guided through the second threaded sleeve and introduced into or guided through the first threaded sleeve, and which is suitable to axially clamp the first and the second threaded sleeve in such a manner that the first and the second threaded sleeve form opposed composite stresses in the respective component.
E04H 9/02 - Bâtiments, groupes de bâtiments ou abris conçus pour résister à des situations extérieures anormales, p. ex. à des bombardements, à des séismes ou à des climats extrêmes, ou pour se protéger de ces situations résistant aux séismes ou à l'effondrement du sol
F16B 5/06 - Jonction de feuilles ou de plaques soit entre elles soit à des bandes ou barres parallèles à elles par brides ou clips
F16B 25/00 - Vis formant des filets dans le matériau dans lequel elles sont vissées, p. ex. vis à bois, vis auto-taraudeuses
F16B 37/12 - Écrous ou pièces similaires avec entrées de filetage avec surfaces d'entrée de filetage consistant en une insertion de ressorts hélicoïdaux, de disques ou de pièces analoguesÉcrous constitués par des morceaux indépendants de fil métallique enrouléGarnitures filetées intérieures pour trous
G06F 30/12 - CAO géométrique caractérisée par des moyens d’entrée spécialement adaptés à la CAO, p. ex. interfaces utilisateur graphiques [UIG] spécialement adaptées à la CAO
G06F 119/14 - Analyse des forces ou optimisation des forces, p. ex. forces statiques ou dynamiques
4.
System for securing an anchor in a mineral substrate
F16B 25/00 - Vis formant des filets dans le matériau dans lequel elles sont vissées, p. ex. vis à bois, vis auto-taraudeuses
B23G 1/16 - FiletageMachines automatiques spécialement conçues pour le filetage des trous de pièces à usiner à l'aide de tarauds
B28D 1/14 - Travail de la pierre ou des matériaux analogues p. ex. briques, béton, non prévu ailleursMachines, dispositifs, outils à cet effet par forage ou perçage
B28D 1/18 - Travail de la pierre ou des matériaux analogues p. ex. briques, béton, non prévu ailleursMachines, dispositifs, outils à cet effet par fraisage, p. ex. exécution de sillons au moyen de fraises
E04B 1/41 - Dispositifs d'assemblage spécialement adaptés pour être noyés dans du béton armé ou de la maçonnerie
5.
System for securing an anchor in a mineral substrate
The invention relates to a system for securing an anchor in a borehole in a mineral substrate, in particular concrete, mortar, or brickwork, comprising an anchor with a core section and a threaded section and comprising a furrowing tool for furrowing an internal thread in the borehole, said furrowing tool comprising the following: a main part with a leading end and a trailing end, wherein a force is applied via which a torque can be transmitted to the main part in order to rotate the furrowing tool (10) into the borehole and furrow the thread, and the main part has an outer surface equipped with a furrowing thread which is suitable for furrowing the internal thread into the wall of the borehole. The furrowing tool has a drive element on the leading end of the furrowing tool, said drive element being suitable for interacting with an application of force to the anchor or a part thereof which is to be screwed into the borehole machined by the furrowing tool.
F16B 25/00 - Vis formant des filets dans le matériau dans lequel elles sont vissées, p. ex. vis à bois, vis auto-taraudeuses
B28D 1/14 - Travail de la pierre ou des matériaux analogues p. ex. briques, béton, non prévu ailleursMachines, dispositifs, outils à cet effet par forage ou perçage
B28D 1/18 - Travail de la pierre ou des matériaux analogues p. ex. briques, béton, non prévu ailleursMachines, dispositifs, outils à cet effet par fraisage, p. ex. exécution de sillons au moyen de fraises
E04B 1/41 - Dispositifs d'assemblage spécialement adaptés pour être noyés dans du béton armé ou de la maçonnerie
6.
System for securing an anchor in a mineral substrate
The invention relates to a system for securing an anchor in a borehole in a mineral substrate, in particular concrete, mortar, or brickwork, comprising an anchor with a core section and a threaded section and comprising a furrowing tool for furrowing an internal thread in the borehole, wherein the furrowing tool comprises the following: a main part with a leading end and a trailing end, said main part having an outer surface on which a furrowing thread is formed that is suitable for furrowing the internal thread into the wall of the borehole. The outer surface of the main part is equipped with a plurality of elevations, each of which has a cutting edge, and all of the cutting edges lie at least partly on an imaginary cylinder with a diameter (do). The cutting edges are suitable for at least partially removing the inner wall of the borehole when the furrowing tool is rotated into the borehole in order to adapt the internal wall of the borehole to the imaginary cylinder.
F16B 25/00 - Vis formant des filets dans le matériau dans lequel elles sont vissées, p. ex. vis à bois, vis auto-taraudeuses
B28D 1/14 - Travail de la pierre ou des matériaux analogues p. ex. briques, béton, non prévu ailleursMachines, dispositifs, outils à cet effet par forage ou perçage
B28D 1/18 - Travail de la pierre ou des matériaux analogues p. ex. briques, béton, non prévu ailleursMachines, dispositifs, outils à cet effet par fraisage, p. ex. exécution de sillons au moyen de fraises
E04B 1/41 - Dispositifs d'assemblage spécialement adaptés pour être noyés dans du béton armé ou de la maçonnerie
Small ironware, screws and screwed nuts, rivets, notched
pins; clamps and similar connecting and locking elements
made of wire and sheet metal; wall ties.
Small ironware, screws and screwed nuts, rivets, notched
pins; clamps and similar connecting and locking elements
made of wire and sheet metal; wall ties.
9.
SYSTEM FOR SECURING AN ANCHOR IN A MINERAL SUBSTRATE
The invention relates to a system for securing an anchor (40) in a borehole in a mineral substrate, in particular concrete, mortar, or brickwork, comprising an anchor (40) with a core section and a threaded section (52) and comprising a furrowing tool (10) for furrowing an internal thread in the borehole, wherein the furrowing tool (10) comprises the following: a main part (12) with a leading end and a trailing end (12a, 12b), said main part (12) having an outer surface on which a furrowing thread (18) is formed that is suitable for furrowing the internal thread into the wall of the borehole. The outer surface of the main part (12) is equipped with a plurality of elevations (24), each of which has a cutting edge (26), and all of the cutting edges (26) lie at least partly on an imaginary cylinder with a diameter (do). The cutting edges (26) are suitable for at least partially removing the inner wall of the borehole when the furrowing tool (10) is rotated into the borehole in order to adapt the internal wall of the borehole to the imaginary cylinder.
B28D 1/18 - Travail de la pierre ou des matériaux analogues p. ex. briques, béton, non prévu ailleursMachines, dispositifs, outils à cet effet par fraisage, p. ex. exécution de sillons au moyen de fraises
B28D 1/14 - Travail de la pierre ou des matériaux analogues p. ex. briques, béton, non prévu ailleursMachines, dispositifs, outils à cet effet par forage ou perçage
F16B 25/00 - Vis formant des filets dans le matériau dans lequel elles sont vissées, p. ex. vis à bois, vis auto-taraudeuses
10.
SYSTEM FOR SECURING AN ANCHOR IN A MINERAL SUBSTRATE
The invention relates to a system for securing an anchor (40) in a borehole in a mineral substrate, in particular concrete, mortar, or brickwork, comprising an anchor (40) with a core section and a threaded section (51) and comprising a furrowing tool (10) for furrowing an internal thread in the borehole, said furrowing tool (10) comprising the following: a main part (12) with a leading end and a trailing end (12a, 12b), wherein a force is applied via which a torque can be transmitted to the main part (12) in order to rotate the furrowing tool (10) into the borehole and furrow the thread, and the main part (12) has an outer surface equipped with a furrowing thread (18) which is suitable for furrowing the internal thread into the wall of the borehole. The furrowing tool (10) has a drive element (34) on the leading end (12a) of the furrowing tool, said drive element being suitable for interacting with an application of force to the anchor (40) or a part thereof which is to be screwed into the borehole machined by the furrowing tool.
B28D 1/14 - Travail de la pierre ou des matériaux analogues p. ex. briques, béton, non prévu ailleursMachines, dispositifs, outils à cet effet par forage ou perçage
B28D 1/18 - Travail de la pierre ou des matériaux analogues p. ex. briques, béton, non prévu ailleursMachines, dispositifs, outils à cet effet par fraisage, p. ex. exécution de sillons au moyen de fraises
F16B 25/00 - Vis formant des filets dans le matériau dans lequel elles sont vissées, p. ex. vis à bois, vis auto-taraudeuses
11.
SYSTEM FOR SECURING AN ANCHOR IN A MINERAL SUBSTRATE
B28D 1/14 - Travail de la pierre ou des matériaux analogues p. ex. briques, béton, non prévu ailleursMachines, dispositifs, outils à cet effet par forage ou perçage
B28D 1/18 - Travail de la pierre ou des matériaux analogues p. ex. briques, béton, non prévu ailleursMachines, dispositifs, outils à cet effet par fraisage, p. ex. exécution de sillons au moyen de fraises
E21D 21/00 - Boulons d'ancrage pour la protection du toit, de la sole ou du revêtement des puits
F16B 25/00 - Vis formant des filets dans le matériau dans lequel elles sont vissées, p. ex. vis à bois, vis auto-taraudeuses
12.
Method for attaching mounted parts to concrete or masonry
A method is defined for attaching mounted parts on a mounting substrate formed of concrete or masonry, having a group of anchors wherein the following is true for the ratio VSd/NSd of the rated value for the transverse load VSd and of the rated value of the tensile load NSd of at least one anchor in the anchor group: VSd/NSd≥0.3, preferably VSd/NSd≥0.6 and particularly preferably VSd/NSd≥1.0, and wherein the characteristic resistances of these anchors to transverse loading VRk or to tensile loading NRk satisfy the following relationship: VRk/NRk≤1.1. The at least one anchor of the anchor group is inclined at an angle αAnker to the perpendicular to the surface of the mounting substrate in such a manner that the following is true: αAnker=k*¾*arc tan (VSd/NSd) for NSd>0, and αAnker=k*67.5° for NSd=0, where: 0.8≤k≤1.34, providing that αAnker≤75°.
E04H 9/02 - Bâtiments, groupes de bâtiments ou abris conçus pour résister à des situations extérieures anormales, p. ex. à des bombardements, à des séismes ou à des climats extrêmes, ou pour se protéger de ces situations résistant aux séismes ou à l'effondrement du sol
F16B 5/06 - Jonction de feuilles ou de plaques soit entre elles soit à des bandes ou barres parallèles à elles par brides ou clips
F16B 37/12 - Écrous ou pièces similaires avec entrées de filetage avec surfaces d'entrée de filetage consistant en une insertion de ressorts hélicoïdaux, de disques ou de pièces analoguesÉcrous constitués par des morceaux indépendants de fil métallique enrouléGarnitures filetées intérieures pour trous
13.
METHOD FOR ATTACHING MOUNTED PARTS TO CONCRETE OR MASONRY
A method is defined for attaching mounted parts (10) on a mounting substrate (12), formed of concrete or masonry, having a group of anchors (14), wherein the following is true for the ratio VSd/NSd of the rated value for the transverse load VSd and of the rated value of the tensile load NSd of at least one anchor (14) in the anchor group: VSd/NSd ≥ 0.3, preferably VSd/NSd ≥ 0.6 and particularly preferably VSd/NSd ≥ 1.0, and wherein the characteristic resistances of these anchors to transverse loading VRk or to tensile loading NRk satisfy the following relationship: VRk/NRk ≤ 1.1. The at least one anchor (14) of the anchor group is inclined at an angle αAnker to the perpendicular to the surface of the mounting substrate (12) in such a manner that the following is true: αAnker = k * 3/4 * arctan ( VSd / NSd) for NSd > 0, and αAnker = k *67,5° for NSd = 0, where: 0,8 ≤ k ≤ 1,34, providing that αAnker ≤ 75°.
The invention relates to a system (18) for joining two components (10, 12) or for reinforcing a component, comprising a first and a second threaded sleeve (20, 22) which each comprise the following: an outer thread (31), with the aid of which the threaded sleeve (20, 22) can be screwed into the respective component (10, 12) and which is suitable to form a composite with the respective component (10, 12), and a power drive, by which a torque for screwing the threaded sleeve (20, 22) into the respective component can be transmitted to the threaded sleeve. The system (18) further comprises an elongate clamping element (24) which is suitable to be guided through the second threaded sleeve (22) and introduced into or guided through the first threaded sleeve (20), and which is suitable to axially clamp the first and the second threaded sleeve (20, 22) in such a manner that the first and the second threaded sleeve (20, 22) form opposed composite stresses in the respective component (10, 12).
F16B 13/00 - Chevilles ou autres dispositifs fixés à des parois ou autres emplacements par insertion dans des trous préparés à cet effet
F16B 25/00 - Vis formant des filets dans le matériau dans lequel elles sont vissées, p. ex. vis à bois, vis auto-taraudeuses
F16B 37/12 - Écrous ou pièces similaires avec entrées de filetage avec surfaces d'entrée de filetage consistant en une insertion de ressorts hélicoïdaux, de disques ou de pièces analoguesÉcrous constitués par des morceaux indépendants de fil métallique enrouléGarnitures filetées intérieures pour trous
Disclosed is a method for producing a screw anchor (10) comprising an anchoring thread (12), a metric fine connection thread (14) and a driving feature (16). The method comprises the following steps: - providing a blank (18) having a first section (20), on which the metric fine connection thread is to be formed and a second section (22), on which the anchoring thread is to be formed, the blank having a carbon content of at least 0.5 %, preferably at least 0.6 %, - forming the driving feature (16) by a metal-removing process, a joining process or hot forming process, - forming the metric fine thread (14) by rolling and - forming the anchoring thread (12) by rolling. The invention also relates to a further method for producing a screw anchor and to a screw anchor.
The invention relates to an anchoring system for anchoring in a drill hole. The anchoring system comprises a sleeve element and an expansion element. The sleeve element consists at least in some sections of a plastics material and is suitable for insertion into a drill hole. The expansion element comprises a threaded portion into which the sleeve element can be screwed and is suitable to radially expand the sleeve element during the screwing action. The anchoring system is characterized in that the threaded portion has a thread pitch which varies along the threaded portion.
F16B 13/06 - Chevilles ou autres dispositifs fixés à des parois ou autres emplacements par insertion dans des trous préparés à cet effet avec parties s'agrippant dans le trou ou derrière la paroi après insertion et combinées avec un manchon extensible
F16B 13/12 - Chevilles métalliques creuses bloquées par insertion d'un clou, d'une vis ou d'une pièce similaire
F16B 25/00 - Vis formant des filets dans le matériau dans lequel elles sont vissées, p. ex. vis à bois, vis auto-taraudeuses
The present invention relates to a coil (10) for transmitting torque to a threaded insert sleeve with an external thread and/or for tapping a thread. The coil (10) comprises a radially outer profile for anchoring the coil (10) in a threaded insert sleeve and for transmitting a torque to the threaded insert sleeve and/or for tapping a thread. In addition, the coil (10) comprises a driving profile suitable for receiving a drive, which can engage in the driving profile in such a way that a torque can be transmitted from the drive to said coil (10) and that at the same time the drive limits or avoids any torsion of the coil (10).
F16B 25/00 - Vis formant des filets dans le matériau dans lequel elles sont vissées, p. ex. vis à bois, vis auto-taraudeuses
F16B 37/12 - Écrous ou pièces similaires avec entrées de filetage avec surfaces d'entrée de filetage consistant en une insertion de ressorts hélicoïdaux, de disques ou de pièces analoguesÉcrous constitués par des morceaux indépendants de fil métallique enrouléGarnitures filetées intérieures pour trous
F16B 33/00 - Caractéristiques communes aux boulons et aux écrous
The disclosure relates to an anchor system having an internally threaded anchor and a bolt or shaft screwed together with said anchor for holding an add-on component in a hole that is pre-drilled into a wall made of concrete or brick work, characterized in that the bolt of shaft comprises a coil spring which is wound suitably to the inner thread of the internally threaded anchor and screwed into said inner thread.
F16B 13/00 - Chevilles ou autres dispositifs fixés à des parois ou autres emplacements par insertion dans des trous préparés à cet effet
F16B 35/00 - Boulons filetésBoulons d'ancrageGoujons filetésVisVis de pression
F16B 13/06 - Chevilles ou autres dispositifs fixés à des parois ou autres emplacements par insertion dans des trous préparés à cet effet avec parties s'agrippant dans le trou ou derrière la paroi après insertion et combinées avec un manchon extensible
E04B 1/41 - Dispositifs d'assemblage spécialement adaptés pour être noyés dans du béton armé ou de la maçonnerie
F16F 15/02 - Suppression des vibrations dans les systèmes non rotatifs, p. ex. dans des systèmes alternatifsSuppression des vibrations dans les systèmes rotatifs par l'utilisation d'organes ne se déplaçant pas avec le système rotatif
F16B 35/04 - Boulons filetésBoulons d'ancrageGoujons filetésVisVis de pression avec tête ou axe de forme particulière permettant de fixer le boulon sur ou dans un objet
F16B 13/08 - Chevilles ou autres dispositifs fixés à des parois ou autres emplacements par insertion dans des trous préparés à cet effet avec parties s'agrippant dans le trou ou derrière la paroi après insertion les parties s'agrippant étant distinctes du dispositif et amenées dans leur position finale sans opération manuelle ultérieure
19.
Tool, screw and system for transmitting a drive torque
The present invention relates to a drive tool, a screw and a system for transmitting a drive torque. The drive tool can be guided in a receiving recess of a connecting partner, in particular in a receiving recess of the screw, and transmit the drive torque during a rotation about a central axis. The drive tool has radially outwardly projecting first projections which are wedgeshaped in cross-section and which are suitable for transmitting the drive torque to the connecting partner. The drive tool comprises a quasi-cylindrical section in which all of the surface lines in the region of the quasicylindrical section form an angle of less than 10° with the central axis, but the outer face is, at least in sections, of conical form such that the surface lines in the respective section are inclined by at least 1.5° with respect to the central axis.
B25B 23/10 - Dispositions pour manipuler les vis ou écrous pour tenir ou présenter la vis ou l'écrou avant ou pendant sa rotation par des moyens mécaniques de prise
F16B 23/00 - Têtes de boulons ou de vis de forme spéciale pour permettre leur rotation à l'aide d'un outil
20.
ANCHORING SYSTEM COMPRISING A SLEEVE ELEMENT AND AN EXPANSION ELEMENT
The invention relates to an anchoring system for anchoring in a drill hole. The anchoring system comprises a sleeve element and an expansion element. The sleeve element consists at least in some sections of a plastics material and is suitable for insertion into a drill hole. The expansion element (10) comprises a threaded portion (12) into which the sleeve element can be screwed and is suitable to radially expand the sleeve element during the screwing action. The anchoring system is characterized in that the threaded portion (12) has a thread pitch which varies along the threaded portion (12).
The present invention relates to a helix (10) for transmitting a torque to a thread insert sleeve (30) having an external thread (28) and/or for forming a thread. The helix (10) comprises a radially external profile for anchoring the helix (10) in a thread insert sleeve (30) and for transmitting a torque to the thread insert sleeve (30) and/or for forming a thread. Furthermore, the helix (10) comprises a drive profile (16) which is suitable for receiving a drive that can engage in the drive profile such that a torque can be transmitted from the drive to the helix (10) and such that the drive at the same time restricts or avoids torsion of the helix (10).
F16B 25/00 - Vis formant des filets dans le matériau dans lequel elles sont vissées, p. ex. vis à bois, vis auto-taraudeuses
F16B 37/12 - Écrous ou pièces similaires avec entrées de filetage avec surfaces d'entrée de filetage consistant en une insertion de ressorts hélicoïdaux, de disques ou de pièces analoguesÉcrous constitués par des morceaux indépendants de fil métallique enrouléGarnitures filetées intérieures pour trous
F16B 33/00 - Caractéristiques communes aux boulons et aux écrous
The invention relates to an anchor system having an internally threaded anchor and a bolt or shaft screwed together with said anchor for holding an add-on component in a hole that is pre-drilled into a wall made of concrete or brick work, characterized in that the bolt of shaft comprises a coil spring which is wound suitably to the inner thread of the internally threaded anchor and screwed into said inner thread.
F16B 13/00 - Chevilles ou autres dispositifs fixés à des parois ou autres emplacements par insertion dans des trous préparés à cet effet
E04B 1/41 - Dispositifs d'assemblage spécialement adaptés pour être noyés dans du béton armé ou de la maçonnerie
F16F 15/02 - Suppression des vibrations dans les systèmes non rotatifs, p. ex. dans des systèmes alternatifsSuppression des vibrations dans les systèmes rotatifs par l'utilisation d'organes ne se déplaçant pas avec le système rotatif
A method for manufacturing a screw is disclosed where a blank is rolled between two rolling dies. In each rolling die a rolling profile has been formed that comprises a host of elongated depressions. The rolling die has a first and a second end which are spaced apart from each other in the direction of rolling. During rolling, the blank is moved relative to the die from the first end in the direction of the second end. The mean pitch of the center lines of the depressions, which pitch is defined as the quotient of the changes in the positions of the center line in the direction across or parallel to the direction of rolling, in a region of the first end of the rolling die differs from the mean pitch in a region of the second end of the rolling die.
B21H 3/06 - Fabrication au moyen d'éléments profilés autres que des rouleaux, p. ex. au moyen de mâchoires se déplaçant longitudinalement ou décrivant des courbes l'une par rapport à l'autre
B21H 3/02 - Fabrication de corps hélicoïdaux ou de corps ayant certaines parties de forme hélicoïdale de corps à filetage extérieur
24.
Method and rolling die for producing a screw with a variable thread pitch
Disclosed herein is a method for manufacturing a screw comprising a continuous thread with a variable thread pitch, in which method a blank is rolled between two rolling dies, wherein in each rolling die a rolling profile is formed that comprises a host of curved non-parallel depressions. The depressions are designed and arranged in such a manner that during rolling no volume transport, or as little volume transport as possible, in the axial direction takes place, or a volume transport from a region of the blank where a thread section with a larger thread pitch is to be formed, to a region in which a thread section with a smaller thread pitch is to be formed takes place.
B21H 3/06 - Fabrication au moyen d'éléments profilés autres que des rouleaux, p. ex. au moyen de mâchoires se déplaçant longitudinalement ou décrivant des courbes l'une par rapport à l'autre
The invention relates to the head of a countersunk screw with a lower side which has at least one supporting surface, which forms part of a rotational surface about the screw axis and can nestle against a correspondingly contoured countersunk surface of an add-on part, and has at least one depression which is delimited by a cutting edge at its end which runs downwards, as seen in the screwing-in direction of the countersunk screw. The invention is distinguished in that in front of the supporting surface, as seen in the screwing-in direction, there is an approach surface which butts against said supporting surface, is inclined radially inwards and, at its upwardly running, free end, has the cutting edge which, over its length, maintains a radial distance from the rotational surface to the inside.
The invention relates to a countersunk head screw comprising a cylindrical shaft (2) and an essentially conical countersunk head (4) comprising at least two edges (15) on the lower side. Said countersunk head screw is characterized in that the edges each mark an end of a partial surface (10) located on the lower side, each of the partial surfaces lying on a non-concave separate surface of revolution.
The present invention relates to a drive tool (10), a screw and a system for transmitting a drive torque. The drive tool (10) can be guided in a receiving recess of a connecting partner, in particular in a receiving recess of the screw, and transmit the drive torque during a rotation about a central axis (18). The drive tool (10) has radially outwardly projecting first projections (16) which are wedge-shaped in cross-section and which are suitable for transmitting the drive torque to the connecting partner. The drive tool (10) comprises a quasi-cylindrical section in which all of the surface lines in the region of the quasi-cylindrical section form an angle of less than 10° with the central axis (18), but the outer face is, at least in sections, of conical form such that the surface lines in the respective section are inclined by at least 1.5°, preferably by at least 2.5°, with respect to the central axis (18). Furthermore, the drive tool (10) comprises a tapering section in which the surface lines, in the region of the radially outer vertex sections of the first projections (16), have at least in sections an angle of at least 30°, preferably at least 40° and particularly preferably at least 44° with respect to the central axis.
B25B 23/10 - Dispositions pour manipuler les vis ou écrous pour tenir ou présenter la vis ou l'écrou avant ou pendant sa rotation par des moyens mécaniques de prise
F16B 23/00 - Têtes de boulons ou de vis de forme spéciale pour permettre leur rotation à l'aide d'un outil
The present invention relates to a helix (10) for transmitting a torque to a thread insert sleeve (30) having an external thread (28) and/or for forming a thread. The helix (10) comprises a radially external profile for anchoring the helix (10) in a thread insert sleeve (30) and for transmitting a torque to the thread insert sleeve (30) and/or for forming a thread. Furthermore, the helix (10) comprises a drive profile (16) which is suitable for receiving a drive that can engage in the drive profile such that a torque can be transmitted from the drive to the helix (10) and such that the drive at the same time restricts or avoids torsion of the helix (10).
F16B 25/00 - Vis formant des filets dans le matériau dans lequel elles sont vissées, p. ex. vis à bois, vis auto-taraudeuses
F16B 33/00 - Caractéristiques communes aux boulons et aux écrous
F16B 37/12 - Écrous ou pièces similaires avec entrées de filetage avec surfaces d'entrée de filetage consistant en une insertion de ressorts hélicoïdaux, de disques ou de pièces analoguesÉcrous constitués par des morceaux indépendants de fil métallique enrouléGarnitures filetées intérieures pour trous
30.
ANCHORING SYSTEM WITH A SLEEVE ELEMENT AND AN EXPANSION ELEMENT
The invention relates to an anchoring system for anchoring in a drill hole. The anchoring system comprises a sleeve element and an expansion element. The sleeve element consists at least in some sections of a plastics material and is suitable for insertion into a drill hole. The expansion element (10) comprises a threaded portion (12) into which the sleeve element can be screwed and is suitable to radially expand the sleeve element during the screwing action. The anchoring system is characterized in that the threaded portion (12) has a thread pitch which varies along the threaded portion (12).
