Abstract

A fluid dispenser having a fluid inlet and a fluid outlet; and a pump for drawing fluid from a fluid source via the fluid inlet towards the fluid outlet; wherein the pump has a housing and a spring adapted to bias the pump away from a compressed position and towards a rest position; the spring being situated at least partially within the housing; and wherein the spring comprises one or more resiliently deformable polymer units.

IPC Classes  ?

• F16F 9/04 - Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only in a chamber with a flexible wall
• B05B 11/00 - Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use

Abstract

A dosing apparatus suitable for dispensing a dose of liquid from a resilient squeezable container, comprises a cap, suitable for attachment to the container, the cap comprising an expulsion channel for the expulsion of liquid; a cylindrical dosage chamber attached to the cap, the dosage chamber comprising side walls extending from the cap, at least one inlet opening in the side walls proximal to the cap; a cylindrical pressure chamber located underneath the dosage chamber, the pressure chamber having a smaller diameter than the dosage chamber in order to form a flange for the plunger to rest on; a valve assembly provided at the end of the pressure chamber distal to the dosage chamber; and a plunger provided in the dosage chamber, and moveable relative to the dosage chamber so as to advance upon squeezing of the container, up to a blocking position; wherein the valve comprises a ring forming an opening and a disc valve attached to the ring, the disc valve being moveable from an open position, allowing liquid to flow through the opening of the ring, and a closed position where the disc valve closes the opening of the ring, the valve incorporating at least one aperture.

IPC Classes  ?

• G01F 11/04 - Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers which expand or contract during measurement of the free-piston type
• B65D 47/08 - Closures with discharging devices other than pumps with pouring spouts or tubesClosures with discharging devices other than pumps with discharge nozzles or passages having articulated or hinged closures
• B65D 47/20 - Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge
• G01F 11/26 - Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers moved during operation wherein the measuring chamber is filled and emptied by tilting or inverting the supply vessel, e.g. bottle-emptying apparatus

Abstract

A dosing apparatus suitable for dispensing a dose of liquid from a resilient squeezable container, comprises: a cap, suitable for attachment to said container, said cap comprising an expulsion channel for the expulsion of liquid; a dosage chamber attached to said cap, said dosage chamber comprising side walls extending from said cap, at least one inlet opening in said side walls proximal to said cap; a pressure chamber located underneath said dosage chamber; a valve provided at the end of the pressure chamber distal to said dosage chamber, said valve being moveable from an open position, allowing liquid to flow through one or more discharge openings, and a closed position where the valve closes the or each discharge opening, said valve incorporating at least one aperture; and a plunger provided in said dosage chamber, and moveable relative to said dosage chamber so as to advance upon squeezing of said container, up to a blocking position.

IPC Classes  ?

• G01F 11/04 - Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers which expand or contract during measurement of the free-piston type
• B65D 47/20 - Closures with discharging devices other than pumps comprising hand-operated members for controlling discharge
• G01F 11/26 - Apparatus requiring external operation adapted at each repeated and identical operation to measure and separate a predetermined volume of fluid or fluent solid material from a supply or container, without regard to weight, and to deliver it with measuring chambers moved during operation wherein the measuring chamber is filled and emptied by tilting or inverting the supply vessel, e.g. bottle-emptying apparatus