Abstract: Certain pump dispensers, for example foam dispensers, are specially adapted for inverted use. One feature especially useful in a foam dispenser having both an air cylinder and a liquid cylinder with respective pistons is an intake conduit arrangement to increase the clearance of liquid from the container. An intermediate shell fits over the upright liquid cylinder body and carries an inlet valve positively urged upward to the closed position to prevent leaking. A conduit shell fits over the intermediate shell and creates an intake conduit extending down the side of the liquid cylinder to an intake opening lower down the pump body.

Abstract: Fluid discharge head having a discharge nozzle which can be placed on a discharge device and which holds a medium guide and a medium outlet at the end of a medium guide, in the region of the medium outlet a movable closure element that can be moved into an open position is provided and, for the purpose of actuating discharge, the discharge nozzle and the discharge device can be moved axially towards each other, for which purpose the discharge nozzle has a skirt to form a sliding guide with a section on the discharge device, the skirt (9) of the discharge nozzle (5) being assigned a second, additional skirt (12) in order to form an annular bush (13) which can be mounted such that it can be displaced longitudinally on a section (11) of the discharge device (2) that is formed as an annular shaft.

Abstract: A dispenser for use with a liquid product including beads which are rupturable to release additives when rubbed between the hands of a user. The dispenser includes a discharge head reciprocable between pressure and return strokes, and a valve assembly for respectively allowing and preventing liquid product from being discharged during the pressure and return strokes. The valve assembly includes ribs for guiding movement of a check valve disposable in respective valve open and closed positions in which the check valve is disposed out of and in contact with a valve seat. The valve assembly includes primary fluid passages for permitting passage of the liquid and beads into a pump cylinder, and secondary fluid passages for permitting displacement of the beads during translation of the check valve between the valve open to the valve closed positions for thereby preventing accumulation of beads between the check valve and its valve seat.

Abstract: Fluid mixture which comprises at least one low-boiling liquid, and which during use generates a low vapour pressure, said mixture being dispensable by a manually operated dispensing pump mounted on a hermetically sealed container of this mixture. The low vapour pressure developed by the low-boiling liquid is such as to prevent a vacuum being created in the container interior when the mixture is dispensed by the pump, in order to allow correct pump operation.

Abstract: Low height precompression pump. The pump comprises: a cylinder (1) comprising a pump chamber (3), and an inlet valve (5), a piston (7) with a lower outwardly flaring lip seal (9) and an inwardly flaring lip seal (19), which rims a central aperture (17) of the piston (7), a hollow pump plunger rod (21), which is in sliding engagement with the central aperture (17), and which has a passage for communication (23) between the pump chamber (3) and the exterior, a securement device (37), with an upper retention cover (39), which attaches the cylinder (1) to a container, a first elastic member (31) housed in the cylinder (1) and a second elastic member (47), which has an upper bearing point (49) applied directly on the plunger rod (21), and which is above the upper retention cover (39).

Abstract: The invention relates to a device which is used for the non-vented dispensing of liquid products from a container including a mobile base, an exhaust conduit and a push element which co-operates with a piston and a return spring. The invention is characterized in that the device includes a sealing and dosing bush bearing a sealing needle valve which can move in translation in a discharge channel in the bush, the needle valve being connected by means of a drive link to an axial guide rod which can slide in the exhaust conduit of the container that is connected to the channel by pressing on the bush and compressing the spring.

Abstract: A liquid dispenser device for being associated with a liquid reservoir, said device comprising: a chamber (10) provided with an inlet valve (5, 15), an outlet valve (27, 32), and a piston (3) that is suitable for varying the volume of the chamber (10); a liquid dispenser orifice (25); and a pusher (2) that is axially displaceable down and up between a rest position and a depressed position; the dispenser device being characterized in that the piston (3) includes an elastically-deformable portion (31) that is deformed by the pusher (2) in its depressed position, in such a manner as to open the outlet valve.

Abstract: A pump assembly with a pressable head includes a push tube, an inner tube, a stop valve, and an outer tube; a top of the push tube passing through the outer tube; the push tube communicates with the inner tube; a bottom of the inner tube is formed with an annular plug; the annular plug of the inner tube has a plurality of via holes defined therein. The via holes have inclined inner walls. A top of the inner tube has a stop valve; the stop valve is a flat structure; an elastic structure is formed on a periphery of the stop valve; by elastic deformation of the elastic structure, the stop valve tightly adheres to an inner wall of the outer tube; an interior of the outer tube has a stepped structure with a greater diameter at an upper side and a smaller diameter at a lower side.

Abstract: Low height precompression pump. The pump includes: a cylinder (1) consisting of a pump chamber (3), and an inlet valve (5), a piston (7) with a lower outwardly flaring lip seal (9) and an inwardly flaring lip seal (19), which rims a central aperture (17) of the piston (7), a hollow pump plunger rod (21), which is in sliding engagement with the central aperture (17), and which has a passage for communication (23) between the pump chamber (3) and the exterior, a securement device (37), with an upper retention cover (39), which attaches the cylinder (1) to a container, a first elastic member (31) housed in the cylinder (1) and a second elastic member (47), which has an upper bearing point (49) applied directly on the plunger rod (21), and which is above the upper retention cover (39).

Abstract: A piston device comprises a sleeve, a casing pipe, a first piston, a resilient member, and a second piston. The sleeve includes at least one hole arranged at the periphery of its closed end. The casing pipe has at least a through hole arranged on a lateral side thereof proximate to its closed end and is sheathed and connected to the sleeve by a manner that the open end of the casing pipe is faced toward the closed end of the sleeve. The first piston is arranged to sheathe the casing pipe at a position proximate to the closed end of the casing pipe for selectively covering and exposing the through hole by a reciprocate movement. The resilient member is installed in side the sleeve at a position between the closed end of the sleeve and the first piston while ensheathing the casing pipe therethrough. The second piston is arranged to sheathe the sleeve at a position proximate to its open end.

Abstract: A pump enabling a fluid substance to be manually dispensed through a hollow stem projecting from a hole in a ring cap sealedly applied to one end of a pump. The stem can sealedly translate within said hole in the ring cap, which in its turn can be sealedly mounted on the mouth of a container containing the fluid substance to be dispensed.

Abstract: The present invention provides a pump (1; 60; 90) for mounting on a receptacle (3), the pump including: an air intake passage formed between the pump body and the moving assembly and capable of communicating with the opening (18) of the pump body; a first lip (40) arranged, after the moving assembly has moved away from a rest position in the substance-dispensing direction, to press in leaktight manner against the pump body and prevent communication between the inside of the receptacle and the pump chamber (6) via the opening (18); and a second lip situated above the first lip when the pump is observed in the head-up position, said second lip being arranged to close the air intake passage when the moving assembly is in its rest position and to release said passage when the moving assembly (5) is displaced in the substance-dispensing direction.

Abstract: Disclosed is a device (1) for dispensing a liquid (2) without spraying as well as a use of such a dispensing device (1). In order to prevent liquid from escaping after a dispensing process, an outlet that opens towards the environment can be closed by means of a discharge valve (7). Said discharge valve (7) is provided with a valve body (9) which can be moved in accordance with the prevailing liquid pressure such that the discharge valve (7) opens when a minimum pressure is exceeded.

Abstract: A fluid dispenser pump (10) comprising a pump body (11), a piston (20) that slides in leaktight manner in said pump body (11) between a rest position and an actuated position, said piston (20) being secured to an actuator rod (30) that extends axially out from said pump body (11), a ferrule (40) being mounted on the top edge (12) of said pump body (11), said ferrule (40) defining the rest position of said piston (20), said ferrule (40) co-operating in leaktight manner with the actuator rod (30) while the actuator rod (30) is moving between the rest position and an intermediate position, and said ferrule (40) co-operating in non-leaktight manner with the actuator rod (30) while the actuator rod (30) is moving between said intermediate position and the actuated position, so as to make it possible to vent the pump (10).

Abstract: A fluid dispenser unit comprising: a pump (50) comprising a pump body (52) and at least a first piston (51) that slides in leaktight manner in said pump body (52) between a non-dispensing position and a dispensing position; and a spray head (10) that is mounted on said pump (50) and that is movable manually between a rest position, in which said first piston (51) is in a non-dispensing position, and an actuated position, in which said first piston (51) is moved towards its dispensing position, said spray head (10) including a body (11) that defines an expulsion channel (12) and that is provided with a dispenser orifice (1), said body (11) of the spray head including, upstream from said dispenser orifice (1), a spray profile that is adapted to spray the fluid while it is being dispensed, said spray head (10) including a rigid insert (30) that is disposed upstream from said spray profile and having an end surface that forms the end of said spray profile at least in part; said rigid insert (30) being secured to

Abstract: Various pump features are provided. In a first aspect, a pump is provided having an actuator with a nozzle and a releasable cap having a first shield located to entrap a fixed volume of air about the nozzle. In a second aspect, a valve seat is located along a pump's internal fluid passage with deflectable spring arms extending therefrom that are deflectable in response to movement of a check valve element. In a third aspect, a compliant shut-off valve feature is provided, wherein, a first end of a tubular piston is deflectable in response to interferingly engaging the head of the poppet. In a fourth aspect, a pump includes a pump inlet, and a reservoir having a first portion and a second well portion in open fluid communication. Fluid may be trapped within the well portion at various angular orientations of the pump.

Abstract: Certain pump dispensers, for example foam dispensers, are specially adapted for inverted use. One feature especially useful in a foam dispenser having both an air cylinder and a liquid cylinder with respective pistons is an intake conduit arrangement to increase the clearance of liquid from the container. An intermediate shell fits over the upright liquid cylinder body and carries an inlet valve positively urged upward to the closed position to prevent leaking. A conduit shell fits over the intermediate shell and creates an intake conduit extending down the side of the liquid cylinder to an intake opening lower down the pump body.

Abstract: The invention provides a water-ingress-preventing mechanism for a lotion pump. The mechanism is mainly used for a lotion pump mounted on a container with a liquid therein and is able to effectively prevent foreign liquids from entering the container. According to one aspect of the invention, in the locking tube portion (13) of the press head (10) is formed at least one longitudinal slot (15) which extends upwards from the lower end edge of the locking tube portion over at least part of the length of the locking tube portion. The slot is disposed such that the upper end of the slot is at a position above the top surface (25) of the cylinder cover (20) when the press head is pressed down to and at the lower stop position of its press stroke with respect to the cylinder cover.

Abstract: A fluid dispenser that includes a dosing chamber, a piston member, a fluid outlet through which fluid will be dispensed, a fluid conduit configured to convey fluid from the dosing chamber towards the fluid outlet, and a seal for sealing the fluid outlet is described.

Abstract: A hand-held multi-dose dispensing apparatus (10) comprising a metering chamber (20) having an axis (21), an end portion (22) at one axial end of the chamber (20) and a side body portion (23) extending from the axial end portion (22), a piston arrangement (30) movable with a piston stroke along the axis of the metering chamber (20) with a seal portion (34) of the piston arrangement (30) being slidably engageable with an inside surface of a side portion (23) of the metering chamber, an inlet (27) for fluid to enter the metering chamber (20), and an outlet (31, 32) for fluid to be dispensed from the metering chamber (20), wherein the inlet (27) is provided on the side body portion (23) of the metering chamber and, in use, during a first portion of the piston stroke, the inlet (27) is in fluid communication with the metering chamber (20) and during a second portion of the piston stroke, the seal portion (34) of the piston arrangement (30) blocks the inlet (27) preventing fluid from passing from the inlet (27) int

Abstract: A fluid pump having a pusher with a push wall defining a push outside surface and an inside surface; and a peripheral skirt which extends from the inside surface of the push wall. A pump chamber is provided with an inlet valve and with an outlet valve, a dispensing orifice via which the fluid is dispensed, a main piston, and a differential piston that is mounted to move in the pump chamber in response to variation in the pressure. The differential piston is mounted to move away from the push wall when the pressure increases in the pump chamber; the pusher and the differential piston being mounted to move along an actuating axis that extends substantially perpendicularly to the push wall. The differential piston is formed integrally with an inlet valve moving member that co-operates with an inlet valve seat.

Abstract: A fluid dispenser member comprising: a body designed to be associated with a receptacle; a dispenser head mounted to move in axial translation relative to the body over an actuation stroke, said head comprising a pusher comprising a push wall, and a side wall extending from said push wall; a chamber defined between said body and said head, said chamber being provided with an inlet valve and an outlet valve; and a dispensing orifice via which the fluid is dispensed; said fluid dispenser member being characterized in that said pusher is provided with an axial rod, said axial rod forming said at least one valve, namely said inlet valve and/or said outlet valve, in co-operation with at least one of the components, and in that said dispenser head further comprises an insert associated with the pusher so that it is constrained to move therewith.

Abstract: A fluid dispenser device includes a chamber provided with an inlet valve and with an outlet valve, and defining a sealed slide cylinder; a piston disposed inside the chamber and including a lip capable of sliding in sealed manner in the slide cylinder. A bearing flange for coming to bear against a reservoir neck; and a ferrule against which the piston is resiliently urged in the rest position. The device being characterized in that the sealed slide cylinder is situated above the bearing flange so that it cannot be inserted into the reservoir neck.

Abstract: A fluid dispenser member comprising a dispenser wall (23) defining an outside surface (231) and an inside surface (232), said wall (23) having a dispenser orifice (24) passing therethrough, connecting the inside surface to the outside surface, the inside surface (232) forming a sealing slide-cylinder (233) for a piston (3) that is suitable for being displaced, from a rest position, along an axis X in said cylinder and with leaktight contact, so as to open an outlet valve (25, 35), said piston (3) forming a portion of a fluid chamber (20) in which fluid is selectively put under pressure and flows through the open outlet valve towards the dispenser orifice, the piston forming a closure wall (34) that is suitable for closing the dispenser orifice (24) in the rest position, the closure wall (34) being positioned, in the rest position, over the dispenser orifice (24) beside its inside surface (232), the closure wall (34) coming into leaktight contact with the inside surface (232), the dispenser member being charac

Abstract: A liquid product dispenser includes a reservoir and a pump. The pump body includes an outer portion forming a sealing closure between the pump body and the reservoir nozzle and the pump body includes an annular projection extending inwards, molded in one single piece, while the piston includes an annular stop co-operating with the annular projection to define a released position of the piston.

Abstract: Certain pump dispensers, for example foam dispensers, are specially adapted for inverted use. One feature, especially useful in a foam dispenser having both an air cylinder and a liquid cylinder with respective pistons is an intake conduit arrangement to increase the clearance of liquid from the container. An intermediate shell fits over the upright liquid cylinder body and carries an inlet valve positively urged upwardly to the closed position to prevent leaking. A conduit shell fits over the intermediate shell and creates an intake conduit extending down the side of the liquid cylinder to an intake opening lower down the pump body.

Abstract: A fluid dispenser pump having a pump body (10) in which at least one piston (15) slides between a rest position and an actuated position, and a turret (20) fixed to the pump body (10). The turret (20) includes an outer portion (21) extending outside the pump body (10) and on the outer portion (21) a support (30) for receiving and holding a sealing gasket (40). The support (30) including a radial shoulder (31), the gasket (40) being snap-fastened onto the shoulder (31).

Abstract: An accumulator-type liquid sprayer includes a piston arranged in a cylinder, a piston guide extending through a passage extending therethrough in an axial direction of the piston, so as to be engageable with, and disengageable from the piston, cooperating with the piston and the cylinder to form a space region for sucking and pressurizing a liquid, a check valve for opening a suction port of the cylinder during suction of the liquid, and a hollow stem slidably fitted with an outer side of the piston in a liquid-tight manner and engaging with an end portion of the piston guide. A first resilient member urges the piston guide against the piston for maintaining a closed state of the passage in the piston, and a second resilient member urges the piston against the piston guide for adjusting a spraying pressure of the liquid.

Abstract: The invention relates to a pump intended to be mounted on a bottle so as to enable a liquid contained in said bottle to be dispensed, said pump including a pump body, an atomizer secured to a push button, a means for the elastic return of the translatory motion of said atomizer in said body, and a plunger mounted in frictional contact against the internal surface of said body so as to define a dosing chamber which is in communication with the liquid by means of a clack valve, wherein the plunger is mounted coaxially around the atomizer in an association zone, said association zone being arranged so as to enable sealed swiveling between the plunger and the atomizer.

Abstract: The valve comprises three parts of generally cylindrical shape, of two or more diameters, fitted into one another, the first of these having a structure of two successive cylinders, being fixed between the cap of the container carrying the substance to be metered and the rim of the neck of the container itself, while the second part is intended to act as main plunger, sliding by its upper portion inside the first part and having a terminal end of smaller diameter guided in the portion of smaller diameter of the first part and having in its intermediate region a likewise intermediate diameter with the main filling and discharge vents for the product, and the third part is formed by a hollow rod rigidly connected to the handle/outlet nozzle and which likewise has a cylindrical structure with two successive different diameters.

Abstract: A liquid dispenser device for being associated with a liquid reservoir (R), said device comprising: a chamber (10) provided with an inlet valve (5, 15), an outlet valve (32, 232), and a piston (3) that is suitable for varying the volume of the chamber; a liquid dispenser orifice (25); and a pusher (2) that is axially displaceable down and up between a rest position and a depressed position; the dispenser device being characterized in that the pusher (2) includes an elastically-deformable wall (212) that is thus displaceable relative to the remainder of the pusher, the piston (3) being in contact, at least momentarily, with the deformable wall (212), so as to be urged in displacement relative to the remainder of the pusher while the wall is being deformed, in such a manner as to open the outlet valve.

Abstract: A liquid dispenser device for being associated with a liquid reservoir, said device comprising: a chamber (10) provided with an inlet valve (5, 15), an outlet valve (27, 32), and a piston (3) that is suitable for varying the volume of the chamber (10); a liquid dispenser orifice (25); and a pusher (2) that is axially displaceable down and up between a rest position and a depressed position; the dispenser device being characterized in that the piston (3) includes an elastically-deformable portion (31) that is deformed by the pusher (2) in its depressed position, in such a manner as to open the outlet valve.

Abstract: An ophthalmic dispenser has a rigid housing defining a fluid-receiving chamber, a flexible bladder receivable within the fluid-receiving chamber, a pump coupled in fluid communication with the fluid-receiving chamber, and a nozzle having a valve defining an annular, axially-extending valve seat, an outlet aperture coupled in fluid communication between the valve seat and the pump, and a flexible valve cover extending about the valve seat and forming an annular, axially-extending interface therebetween.

Abstract: A valve mechanism for a pressure chamber, particularly a pumping device, includes a tappet and a valve disk, in which the valve disk is attached to the tappet. The valve disk is provided on the tappet so as to be movable in relative manner between a starting and an end position.

Abstract: A structure for a green nozzle includes a, pressing body, a spring, a fixing cover, a piston, a connecting rod, a switch valve and a cylinder. The output tube of the pressing body inserted into the spring, the fixing cover, and the piston is connected to the connecting rod. The spring is installed inside the round dented surface located at the upper part of the fixing cover. The switch valve is inserted into the connecting rod from the lower part such that the cylinder is located at the inner lower part of the fixing cover and is further connected to a straw and installed inside a container. The fixing cover is installed at the opening of the container. Liquids such as lotion or perfume inside the container will not get in contact with the spring of metallic material. Thus, chemical change will not happen, and environmental issues can be ignored. In addition, a simplest assembly can be used to reach the function of ejection of the liquid.

Abstract: 1. A dosing device with a pump device. 2.1. A dosing device with a pump device and with an operating handle which is provided for the pump device is known. 2.2. According to the invention, the operating handle (20, 20a, 20b) is produced as a separate component and fixed to the pump device. 2.3. Applicable for pharmaceutical agents.

Abstract: The invention relates to a dosing device that comprises a medium reservoir (S) and a pump device for dosing and dispensing a medium stored in said medium reservoir. The pump device is associated with a pump chamber, and with at least one inlet and one outlet valve. According to the invention, the inlet valve is configured as a sliding valve (10, 12) which, in its closed position, can be displaced by a dosing stroke that defines a dosing volume for the pump chamber (17). The invention further relates to the use of said dosing device for dispensing pharmaceutical active substances, especially for nasal administration.

Abstract: A fluid dispenser member having a dispensing wall (623) defining an outside surface and inside surface, said wall being provided with a through dispensing orifice (625) connecting the inside surface to the outside surface, the inside surface forming a leaktight slide cylinder for a piston (632, 633) suitable for moving in leaktight contact inside said cylinder for selectively unmasking the dispensing orifice, said piston forming a wall element of a fluid chamber inside which fluid is selectively put under pressure, said fluid dispenser member being characterized in that the inside surface extends over two surface segments, namely a top segment (6232) and a bottom segment (6242), the top segment having an inside diameter that is smaller than the inside diameter of the bottom segment, the dispensing orifice being formed at the top segment, and the piston being provided with a sealing lip (633) in leaktight sliding contact with the bottom segment.

Abstract: A fluid dispenser device comprising a pump (50) and a dispensing head that comprises a body (1) defining a fluid discharge channel (2) ending in a dispensing orifice (3), a rigid insert (4) being disposed in said discharge channel (2), said rigid insert forming or being secured to the outlet valve of said pump, said fluid dispenser device being characterized in that said dispensing head further comprises a closure element (10) disposed in said discharge channel (2), said closure element (10) being mounted to move and/or to deform between a closure position in which it closes off the discharge channel (2) and a non-closure position in which it does not close off the discharge channel (2), said rigid insert (4) being mounted to move inside said discharge channel (2) between a rest position and an actuating position, said closure element (10) co-operating at one end with said rigid insert (4) and at the other end with said body (1) so that, when the insert (4) is in the rest position, the closure element (10) is

Abstract: A dispenser for flowable media is provided, which operates in user-independent manner with respect to the pressure buildup and dosage quantity. On pressing on an operating head (35) a piston rod (29) is forced into a pump cylinder. As the pump chamber (52) is sealed by means of a delivery valve (51), which operates in path-dependent manner as a slide valve, under the action of a spring (42) pressing on the piston collar (43), a pressure builds up in the pump chamber (52), which is released following a predetermined length of travel on opening the delivery valve. A relatively constant pressure can be obtained over the entire discharge phase through the pretension of spring (42).

Abstract: A dispenser for dispensing metered amounts of a viscous liquid includes a liquid reservoir and a pump chamber having an opening in communication with the reservoir. A pump mechanism including a pump cylinder with a dispensing channel therethrough is configured with the pump chamber and is movable from a rest to a pressurizing position upon actuation thereof to pressurize liquid within the pump chamber. A dispensing orifice is defined at one end of the dispensing cylinder. A check valve mechanism is disposed in the opening. During shipment or storage, the pump cylinder is locked in pressurized position. When locked in pressurized position, the dispensing channel engages the check valve to seal the opening and also prevent flow from the pump chamber to the dispensing channel.

Abstract: A fluid dispenser pump including a pump body (10), a piston (20) being slidably received in leaktight manner in the pump body (10) to slide between a rest position and a dispensing position, the top edge (11) of the pump body (10) being fixed in a fixing ring (5) serving to assemble the pump to a reservoir (1), an annular sealing gasket (100, 200) being disposed between the pump body (10) and the fixing ring (5), the pump further being provided with a intake air passageway (80) between the reservoir (1) and the atmosphere, the pump being characterized in that a filtration and/or treatment element (100) for filtering and/or treating the intake air is provided in the intake air passageway (80), the filtration element (100) being disposed between the top edge (11) of the pump body and the fixing ring (5).

Abstract: A device for packaging and dispensing of a cosmetic product which includes a container to hold the product, with the container being delineated by a body. A movable element moves relative to the container body and is capable, in response to an action exerted manually on a surface of an actuating element, of moving from a first position to a second position. The movable element incorporates a first lip intended to engage with an inner wall of the body, during at least part of its movement, thereby isolating a dose of product inside the container in a manner to cause its expulsion through at least one dispensing aperture. The movable element also includes an upper lip capable of being applied in a leaktight manner against the inner wall during at least part of its movement from the first position to the second.

Abstract: An assembly for packaging and dispensing a product, especially a cosmetic product. The assembly includes a container containing the product and delimited by a body, one end of which is closed by a bottom. A movable component is movable relative to the body of the container and is capable, in response to an action exerted manually on a surface of an actuation component, of passing from a first position in which the volume delimited between the movable component and the bottom of the container is a maximum, to a second position in which the volume is a minimum, so as to pressurize the product contained in the volume and deliver the product through at least one dispensing orifice. When the movable component returns from the second position towards the first, air passes into the volume through at least one passage formed between the movable component and an internal surface of the container.

Abstract: A finger operated pump assembly comprising a pump body (60, 160) having a base (64, 164) supporting an outer housing (62, 162) and an inner housing (66, 166) and defining a first portion of a compression chamber (68) therebetween. A piston (82) has an annular lip and has a piston outlet defined by a poppet valve seat. A poppet (98) is accommodated by the inner housing (66, 166) and biased away from the base into engagement with the poppet valve seat by a spring (104). The poppet (98) and inner housing (66, 166) define an interior cavity (100). A peripheral passageway (74) communicates with the compression chamber (68) and includes a one-way valve (76). A ventilation port (110) is provided int the interior cavity (100) so that during operation of (98), it may operate at ambient pressure.

Abstract: A manually-actuated fluid dispenser pump including a pump body (10) and at least one piston (50, 55) mounted to slide in leaktight manner in said pump body (10) between a rest position and a dispensing position, said pump being characterized in that the pump body (10) is frustoconical at least in part so as to modify the radial stresses exerted on said at least one piston (50, 55) between said rest position and said dispensing position.

Abstract: The present invention relates to a low profile, fine mist, finger-operated, precompression-type spray pump, and more particularly to a spray pump provided with a second valve of the novel structure being moveable between a poppet valve and a bottom entrance of housing, to precompress the fluid as a liquid content and then spray, whereby the spray pump can be operated even with a short travel distance of a piston, which enables to make the height of a push button spaced from a closure to be shorter than the existing ones, and the pumping process can be smoothly performed without leakage and can also be started with small empty pumping numbers. In addition, the spray pump according to the present invention is constructed with small numbers of constituent parts, resulting in the significant reduction of manufacturing cost and assembly cost.

Abstract: A manually-actuated fluid dispenser pump including a pump body (10) containing a pump chamber (20), said pump chamber (20) being defined between an inlet valve (30) and an outlet valve (40), a piston (50) being mounted to slide in said pump body (10) between a rest position and a dispensing position for dispensing the fluid contained in the pump chamber, said piston (50) being connected to, and in particular integral with, an actuating rod (60) provided with an expulsion channel (65), said inlet valve (30) including an inlet valve element (31) mounted to move in the pump body (10) and co-operating with said pump body (10) or with an element secured to or integral with said pump body to define the open and the closed positions for said inlet valve (30), said outlet valve (40) including an outlet valve element (41) mounted to move in the pump body (10) and co-operating with said actuating rod (60) or with an element secured to or integral with said actuating rod to define the open and the closed positions for s

Abstract: A dispenser assembly for dispensing a substance from a receptacle is provided. Preferably the collar therefore comprises outwardly projecting and elongated angled ribs for forming complementary elongated grooves in the outer surface of the ferrule. A method of assembling such a dispenser assembly upon a receptacle is also provided and comprises the important step of allowing the collar to rotate over the outer surface of the ferrule and towards the receptacle, such that the elongated ribs form complementary elongated grooves in the outer surface of the ferrule thereby forming an airtight seal between the dispensing assembly and the receptacle.

Abstract: A fluid dispenser pump comprising a pump body (10) containing a pump chamber (11) defined between an upper piston (20) and a lower piston (30), the pistons (20, 30) being mounted to slide in leaktight manner in the pump body (10), the pump chamber (11) being provided with an inlet valve (40) and with an outlet valve (50), the lower piston (30) co-operating with the outlet valve (50), when the full dose has been metered out, to open the outlet valve and to make it possible to deliver the fluid contained in the pump chamber (11), the dispenser pump being characterized in that the lower piston (30) is separate from the inlet valve seat (42) and is mounted to float in the pump chamber (11), the lower piston (30) being returned to its rest position by the inlet valve seat (42).