Pump for dispensing a fluid product, having a piston having a pump chamber and an inlet and outlet valve. The outlet valve has an outlet valve element that slides inside the pump chamber. The pump chamber has a passage so that, at the end of actuation, the outlet valve element collaborates non-sealingly with the passage to open the outlet valve to expel product. The inlet valve has an inlet valve element sliding in a sleeve containing a spring pressing against the inlet valve element and against an end wall of the sleeve. The outlet valve element is formed by a component inserted with the ability to move into the piston, with the interposition of a second spring, the force exerted by the second spring is greater than the force exerted by the spring in the rest position, and less than the force exerted by the spring in the actuated position.

One aspect of the invention provides a component 112, 165 for a fluid dispenser 110 which defines a dosing chamber 120 for a piston member 114 to stroke in and has an end 160 adapted for engaging a fluid outlet 152 of the fluid dispenser or a seal 154 which overlies the fluid outlet 152 to selectively close and open the fluid outlet 152 or seal 154. Other aspects are disclosed herein.

A fluid dispenser device including an outlet, a pocket having an interior volume for containing a fluid, the interior volume being delimited at least in part by a movable wall, a reservoir arranged to contain the fluid, a pocket cap, a cavity, a reservoir orifice joining the reservoir and the cavity; wherein the pocket cap is arranged to be mounted by insertion in the cavity of the device so as to be mounted by extending: —by passing through the pocket at least partially while passing through the movable wall or—by going along the pocket at least partially, the device comprising an inlet orifice arranged to insert the pocket cap into the device from the outside of the device and opening into the cavity.

The invention relates to a pump comprising a piston (1) which slides in a body (3) having a chamber (5) defined between an inlet valve (11) and an outlet valve (12), comprising an outlet valve element sliding during actuation in a sealed manner in the chamber (5), which comprises passage means (40) such that, at the end of the actuation, said outlet valve element (39) cooperates in a non-sealing manner with said passage means (40) in order to open said outlet valve (12), said inlet valve (11) comprising an inlet valve element (10) which slides after closure of the inlet valve (11) in a sleeve (9) of the body (3) having a reduced diameter and containing a spring (20) bearing on said inlet valve element (10) and on a bottom of said sleeve (9), said spring (20) returning the piston (1) into its rest position, said sleeve (9) having an inner diameter of less than 4.2 mm, said spring (20) having a force of at least 20 N, so that said pump delivers said fluid product at a pressure (P) of at least 15 bars.

A fluid substance dispensing device includes an external container with a containment element formed of a deformable part and an essentially rigid neck featuring a first flange which abuts with a free end of the external container at one of the mouth thereof, an intermediate element with a cup-shaped part inserted into the neck and fastened to the external container so that the first flange is sandwiched between the free end and the intermediate element, the cup-shaped part including an opening in communication with an internal part of the deformable part, there being—inside the cup-shaped part—a valve element configured for displacement by the body of an airless pump so that, when the body of the pump is absent or in an unused position, the valve element is stably closed, while when the pump body is pushed into a use position, the valve element is stably open.

A pressurized spray A is provided with a cap part 1, a body part 3 capable of being attached to the cap part, a base body 2 that is attached to the body part 3, an introduction pipe 4 for introducing a liquid in a container attached to the base body 2, a nozzle part 5 attached to the body part 3, a cylinder part 6 attached to the body part 3, an F valve 7 attached to the bottom of the cylinder part 6, a piston part 8 that is allowed to slide inside the cylinder part 6, a pivotal trigger 9 that moves the piston part 8 in forward and backward directions, a restoring spring part 13 for restoring the trigger 9, a pressurized valve (S valve 10) attached to a passage of the body part 3, and a pressing spring part 11 for pressing the pressurized valve in a valve closing direction, and by pivotally moving the trigger 9, the pressurized spray A jets out the liquid, and a liquid passage 12 that communicates with the inside of the cylinder part 6 is formed between the base body 2 and the body part 3 so that the liquid located between the pressurized valve and the base body 2 is collected in the container through the liquid passage 12 and the introduction pipe 4.

A discharging device for the discharge of liquid media is specified, with a pump chamber that comprises an inlet opening and an outlet opening, and with a piston that is displaceable in the pump chamber. The object is to be able to dispense a medium with high accuracy using the discharging device. For this purpose, the piston comprises a projection which enters the inlet opening after a predetermined stroke of the piston.

A dispenser has a housing with a stem extending through the housing. The stem is attached to a head which rotates therewith. When the stem/head combination are rotated axially into, are in some positions, blocking flanges block portals into the stem. In other axially rotated positions, portals into the stem are unblocked by the portals. The portals are at a side of the stem adjacent to the bottom in embodiments of the disclosed technology. Further, a bottom region of the internal space can be conical to direct the material towards the portals, the bottom side of the stem being surrounded by the adjacent conical space such that it fits snugly there-with in embodiments of the disclosed technology.

To provide a base body of pressurized spray that makes it possible to stabilize a pressing spring and also to reduce the number of assembling processes. The base body 2, which is assembled into a pressurized spray A that is attached to a container so as to suck a liquid inside the container into a cylinder part 6 through an F valve 7 from an introduction pipe 4, and by applying a pressure to the liquid inside the cylinder, the liquid is jetted out through an S valve 10 from a nozzle, is provided with: an attaching part for use in attaching the introduction pipe 4 on a lower side, which is attached between a cap and a container mouth part, and a pressing spring part 11 that is attached onto an upper side and presses the S valve 10 in a valve closing direction.

A container of a fluid including a collar having a passage and a pair of laminated film sheets heat-welded along perimetral welding lines so as to form a bag, the pair of sheets also being heat-welded to the collar so that the passage in the collar provides access to interior of the bag; the outer surface of the collar, in a zone in which the collar is welded to the pair of sheets has, seen in section, an oblong shape with two tapered ends aligned along at least one axis along which the pair of sheets are welded.