Abstract: A fluid dispenser comprising a pump (10) having no air intake and mounted in sealed manner on a deformable tank (20), and an outer envelope (30) that surrounds the deformable tank (20) and that retains a shape suitable for being held in the hand throughout the time that the dispenser is in use, the outer envelope (30) defining an inner volume that communicates with the atmosphere via at least one air passage (34, 35, 36), the deformable tank being a flexible tube (20) that extends between a first end (20a) that is closed by pinching to form a bottom (33, 33b) and a second end (20b) that is secured to the pump (10), characterized in that the outer envelope is a flexible tube extending between a first end (30a) close to the bottom (33, 33b) of the tank, and a second end (30b) in mechanical connection with the second end of the deformable tank (20), the first end (30a) of the outer envelope being closed by pinching.

Abstract: A fluid substance dispenser includes a pump mounted on a stopper 20 designed to be fixed on a neck of a receptacle. The pump includes a body 1, a piston 2 that slides axially inside the pump body, a return spring 10 that urges the piston towards the open end of the body, and a single piece ferrule 11 fixed in the open end of the pump body to limit motion of the piston towards the second end. The ferrule has a flange 11a which extends radially outwards, and is engaged as a force-fit inside an internal passage 28 of the stopper to hold the pump in the stopper, preventing the pump body from moving towards the outside of the receptacle. The ferrule is made of a harder plastics material than the stopper so that the radial flange bites into the stopper.

Abstract: A manual precompression pump for spraying or dispensing a fluid substance contained in a receptacle, said pump having a pump body (1) in which a hollow piston (2) slides the piston being extended by a hollow rod (3) including the seat (7a) for a closure valve member (6) urged towards said hollow rod by a spring (10), said spring pushing the valve member (6) and the piston (2) towards a rest position, said pump including a pump chamber (12) which is in communication with the receptacle when the valve member and the piston are in their rest positions, said pump chamber (12) being capable of being isolated from the receptacle by sealed interfitting of a first cylinder (8) integral with the valve member (6) and of a second cylinder (4) integral with the pump body, said pump being characterized in that a valve rod (7b) extends the valve member (6) through the hollow rod (3) to a distance H1 beyond the outside end of the hollow rod, and in that starting from the rest position of the valve member, the cylinder (8) i

Abstract: A pushbutton for actuating a device for dispensing or spraying a fluid substance includes a hollow body 1 having an outlet end 2 in which an outlet orifice 3 is formed, the outlet end including an inside surface 2a which is not perpendicular to the axis 1a of the body. An adjustment member 10 is rotatably received in the body of the pushbutton, and includes a shutter 19 provided with a front surface 19a that is complementary in shape to the inside surface of the outlet end. The shutter is urged towards the outlet end by a resilient tongue 18. The rotation of the adjustment member and shutter varies the outlet flow rate from the pushbutton.

Abstract: A device for dispensing of small volume comprises a pump associated with a container of the substance to be dispensed, the pump comprising: a hollow pump body; and a piston sliding inside said pump body in sealing contact with the pump body around a circular periphery of diameter D2; wherein the pump further includes: a push rod including a central channel in which a valve seat is formed, the push rod sliding in contact with the pump body around a circular periphery of diameter D1 less than D2; a punch secured to the piston and capable of bearing in sealed manner against the valve seat; and resilient means urging the piston against the valve seat.

Abstract: A prior art precompression metering pump which incorporates a differential piston forming part of the pump chamber inlet valve and its outlet valve is difficult to prime, especially in the case of metering paste products. In the improved pump there is disposed between the differential piston and the main piston of the pump a collar consisting of a ring from which project substantially axial tongues which are slightly inwardly inclined and each provided with a head. The collar moves inside the pump body so that normal operation proceeds as if it were not present. To prime the pump, however, the user depresses the collar until it contacts a step on the pump body. The tongues then bend so that their heads, interposed between the two pistons, move the latter apart (by a wedging effect or by a lever arm effect, or by a combination of the two). This is followed by mechanical opening of the pump chamber outlet valve whereby the air initially contained in the pump chamber escapes to the exterior.

Abstract: It is advantageous for a substance in the form of a liquid or a paste to be packaged under pressure and in the absence of any air inside a receptacle (1) which is hermetically closed by a valve (2) for the purpose of dispensing the substance. A convenient way of putting the substance under pressure therefore consists in using a resilient receptacle (1) which is prior deformed so that its walls (10) seek to return to their natural shape (in dashed lines) and exert a force on the substance. The present invention uses mechanical means for imparting said deformation. As a result, the receptacle (1) can be filled with substance at atmospheric pressure. The receptacle is constituted by a single envelope whose shape is of an appearance suitable for the market for this type of dispenser and is adapted to easy manipulation in the hand. Finally, if the dispenser is provided with a precompression pump type valve (2) up to 95% of the substance initially contained in the receptacle (1) can be dispensed.

Abstract: An apparatus for facilitating the filling of a spray device, the spray device being constituted by a receptacle and an extraction and projection pump mounted on the receptacle. The pump is of the precompression type and includes a valve member (8) having a pin (9) which is held pressed against a seat (7) by a spring (10) whose characteristics determine the degree of precompression. The seat is formed around the axis of the delivery piston (4) of the pump, and wherein breakable or deformable projections (15) are formed on the valve member suitable for holding the valve open so long as said projections are not destroyed or deformed.