Abstract: A dispensing pump for liquid or pasty products comprising a housing (2), a piston (6) arranged to move telescopically within the housing between rest and activated positions and a plastics spring (9) arranged to return the piston from its activated to its rest position. The plastics spring has a folded, concertina configuration to provide the required return force for the piston. The spring also has end plates (91, 92), which can be adapted increased functionality. The whole pump may be moulded from a plastics material and has few component parts.

Abstract: A knock-type liquid container includes a body having a tank that holds a liquid, and an outlet provided at a forward end, a piston in the tank, and a piston-advancing mechanism having a knocking body that projects rearwardly of the body for advancing the piston forwardly when the knocking body is knocked in an axial direction of the container. A rearward end surface of the rear cap that forms a rear end surface of the container, except the knocking body is not normal to the axial direction, but makes an angle other than an approximate right angle with the axial direction. A distance between a rear end surface of the knocking body at a non-knocking position and a rearmost portion of the rearward end surface of the container, except the knocking body, is less than a stroke of the knocking body required for advancing the piston.

Abstract: A valve assembly includes a valve housing defining a metering chamber and an elongated stem. The stem is axially movable with respect to the valve housing for dispensing liquid and is rotatable for adjusting the length of the stroke of a piston to thereby select the volume of liquid dispensed with each actuation of the stem. A sliding float member is fitted around the stem within the chamber and is axially slidable with respect to the stem but is locked for rotation with the stem. The lower surface of the sliding float abuts, and floats above the upper surface of the piston, and the lower end of the stem is rotatable within the piston. A spring extends between a prong on the stem and the sliding float for urging the stem axially outward of the container and for urging the piston in a direction which maximizes the volume of the metering chamber such that the spring rotates with the stem and the stem rotates free of the piston.

Abstract: A micropump provided with a cylindrical body (1) containing a measuring chamber (10) defined by a piston (2) and communicating firstly with a tank via an inlet orifice (10a) provided with an inlet valve, and secondly with the outside via an outlet orifice (10b) provided with an outlet valve, the micropump being characterized in that the piston (2) is connected to an external reciprocating actuator, and in that at least one of said valves is constituted by a valve member (3, 6, 7) suitable for being driven in translation by friction contact with said piston (2) successively in one direction and then in the other, and whose stroke inside the chamber (10) is shorter than the stroke of said piston.

Abstract: A container-mounted pump dispenser having a body with a vertical cylinder and piston is provided with a one-piece spring/gasket. The spring/gasket is a resilient bowl-shaped spring attached at its lower end about the piston stem and at its upper end comprises an annular gasket to be squeezed between the dispenser mounting cap and the container finish.

Abstract: An automatic fluid dispenser includes a pump mechanism actuated by the movement of a piston between a first position and a second position. The piston includes a resilient diaphragm that separates a pump chamber from a pressurized fluid chamber. An inlet check valve in the pump chamber, biased into a closed position, allows fluid flow only into the pump chamber from a fluid source, and an outlet check valve allows fluid flow only out of the pump chamber. A valve in a conduit, coupling the pressurized fluid chamber to a pressurized fluid source, is movable between an open position in which the pressurized fluid moves the piston to the second position, dispensing fluid from the fluid chamber, and a closed position in which the pressurized fluid is bled from the pressurized fluid chamber and the piston returns to the first position, thereby drawing additional fluid into the fluid chamber.

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 dispensing orifice is defined in the pump chamber. A pump mechanism is configured with the pump chamber and is movable from a rest position to a pressurizing position upon actuation thereof to pressurize liquid within the pump chamber. A check valve mechanism is disposed in the opening. A sealing member is disposed within the pump chamber to seal the dispensing orifice upon an initial movement of the pump mechanism to its pressurizing position. The sealing member is moveable within the pump chamber upon subsequent further movement of the pump mechanism to its pressurizing position to unseal the dispensing orifice.

Abstract: Disclosed is a cosmetic article having an improved dispensing structure, which compactly combines liquid cosmetic product with an applicator used for applying the liquid cosmetic product.

Abstract: A dosing nozzle is intended to be fitted onto a container containing a product. The nozzle comprises a dosing cavity which can move between a first position and a second position in which it occupies a minimum volume, the cavity being delimited by first and second pistons capable of sliding inside a fixed body. The first piston is fixed to a closure member capable, selectively, of closing off/exposing at least one outlet of the dosing cavity. During a first phase of the movement of the dosing cavity, the first piston is driven by through the effect of the pressure of the product being exerted on the second piston and, during a second phase of the movement of the dosing cavity, the first piston is driven by the pressure of the product being exerted on the first piston, the second piston being immobilized in translation during this second phase.

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 dispensing orifice is defined in the pump chamber. A pump mechanism is configured with the pump chamber and is movable from a rest position to a pressurizing position upon actuation thereof to pressurize liquid within the pump chamber. A check valve mechanism is disposed in the opening. A sealing member is disposed within the pump chamber to seal the dispensing orifice upon an initial movement of the pump mechanism to its pressurizing position. The sealing member is moveable within the pump chamber upon subsequent further movement of the pump mechanism to its pressurizing position to unseal the dispensing orifice.

Abstract: The invention herein relates to an improved switch valve structure for liquid sprayer comprises of a press body, a casing, a cylinder body, a piston body and a spring, wherein the piston body consists of a piston rod and a piston; a seal ring is disposed in the interior portion of the piston to be functioned together with the holes on the piston rod; a seal ring is also disposed on the outer edge of the piston to be worked with the cylinder body for inducing the liquid; the upper hollow portion of the cylinder body functions synchronously with the seal ring on the outer edge of the piston, while the projecting ring inside the lower portion of the cylinder functions synchronously with the solid body of the lower portion of the piston rod and the spring coiled around the lower solid portion of the piston rod.

Abstract: Dosing dispenser for flowable media with a pump that may be manually handled and is integrated in a medium container, with a piston (140), which closes the container (110) fluid-proof to the outside and with a container that is displaced between an upper position and a lower position. A piston chamber (130) adjoins the inner chamber (180) of the container, and is provided in the container bottom (120). The piston chamber has an open upper end aligned to the piston. A connecting channel (150) extends through the piston and provides a fluid-communication to the outside of the container. A spring (160) urges the piston into its upper position, wherein the piston (140), in its upper position, is situated at a distance from the piston chamber (130; 230; 330; 430) and immerses during its downwards movement in its lower position into the piston chamber and, at the same time, closes the adjoining inner chamber (180) of the container from the piston chamber.

Abstract: A precompression system for a liquid dispenser prevents liquid from being discharged from the dispenser until a predetermined pressure level has been attained within the dispenser. The liquid dispenser preferably has a liquid inlet and a liquid outlet for discharging the liquid. The precompression system includes a pump chamber having a piston movable in the pump chamber for drawing liquid through the inlet and discharging the liquid through the outlet. The precompression system also includes a valve chamber having a spring valve disposed between the pump chamber and the outlet and being operable to allow liquid in the pump chamber to reach the outlet only after a predetermined pressure is established in the pump chamber and to stop liquid from reaching the outlet when the pressure in the pump chamber falls below the predetermined pressure.

Abstract: Dosing dispenser for flowable media with a pump that may be manually handled and is integrated in a medium container, with a piston (140), which closes the container (110) fluid-proof to the outside and with a container that is displaced between an upper position and a lower position. A piston chamber (130) adjoins the inner chamber (180) of the container, and is provided in the container bottom (120). The piston chamber has an open upper end aligned to the piston. A connecting channel (150) extends through the piston and provides a fluid-communication to the outside of the container. A spring (160) urges the piston into its upper position, wherein the piston (140), in its upper position, is situated at a distance from the piston chamber (130; 230; 330; 430) and immerses during its downwards movement in its lower position into the piston chamber and, at the same time, closes the adjoining inner chamber (180) of the container from the piston chamber.

Abstract: A pump assembly including a pump attachment adapted to form a nonaerosol pump sprayer, and a method of using the same. The apparatus includes an attachment having a pump sprayer that is pressurized on the upstroke. The attachment includes a body that defines a chamber, a shaft moveable between a first and second position in the body, a piston, a first valve and a second valve. The first valve permits the flow of fluid into the chamber and restricts the flow of fluid out of the chamber. The second valve moves between an open position-permitting the flow out of the chamber and a biased closed position restricting the flow out of the chamber. When the shaft is moved to the first position, the shafts moves the second valve from the closed position to the open position. An apparatus with a bleeder orifice for automatically releasing pressure is also disclosed.

Abstract: The invention relates to a dispenser for dispensing viscous liquids, which dispenser is designed to be mounted on a container; said dispenser being characterized in that it comprises a bowl (1) whose bottom is provided with an inlet orifice (10) equipped with a valve (11), and whose top is closed off by a piston (2) that is urged back into its high position by a spring (3) and that co-operates with the inside wall of the bowl to define a metering chamber (12), the wall of said chamber including an annular zone, all or part of which is elastically deformable so as to act, under the effect of the pressure generated inside the chamber (12) to release a passageway (P) via which the liquid can be removed, which passageway opens out peripherally to the outside.

Abstract: The invention relates to a pump (10) comprising a base part (13) and a telescopic assembly (30) defining a pumping chamber (60). The telescopic assembly comprises at least one outer sleeve (31) and an inner sleeve sliding inside it. The telescopic assembly (30) is arranged in such a way that, on the one hand, when the outer sleeve (31) is moved to reduce the volume of the pumping chamber, the assembly adopts a dispensing configuration and shut-off means (32) shut off the filling orifice (21) and, on the other hand, when the outer sleeve is moved to increase the volume of the pumping chamber, the telescopic assembly adopts its filling configuration and the shut-off means (32) cease to shut off the filling orifice (21).

Abstract: An assembly including a pump attachment particularly adapted to form an nonaerosol pump sprayer, and a method of using the same. The apparatus desirably includes an attachment having a pump sprayer which is pressurized on the upstroke enabling the sprayer to be shipped and stored in a relaxed position. The attachment includes a body, a coupling, a shaft, a piston, an inlet valve and a biasing member. The body defines an elongate chamber having the first end, second end, and an interior wall extending between the first end and second end. The coupler is sized and shaped to secure the body to the neck of a container. The shaft extends through the opening in the first end of the chamber and defines an internal flow channel. The piston is reciprocally mounted within the chamber and includes an inner annular surface surrounding the shaft and an outer annular surface sized and shaped to form a sealing engagement with the interior wall of the body.

Abstract: A pump for manually dispensing liquids under pressure, including a cup-shaped body, and a stem a piston portion of which defines a compression chamber closed at one end by a valve formed from a ball movable on a seat in a hollow appendix in the interior of a body, and closed at the other end by a valving element movable within a stem bore and having a conical part which can seal against a conical seat in the stem, the pump having a width greater than and a length less than known pumps of equal delivery capacity.

Abstract: A pump for mounting on a receptacle comprises two portions which are movable with respect to each other defining between them a variable volume pump chamber; the first part comprises a wall defining a fluid inlet passage, via which the fluid contained in the receptacle can gain entry into the pump chamber; the second part comprises a wall defining a fluid outlet passage via which the fluid contained in the pump chamber can leave. The pump comprises a membrane having a first portion disposed on the outer side of the wall defining the inlet passage, such that pressure in the pump chamber applies said portion to said wall to obstruct the inlet passage when the volume of the pump chamber is reduced, and a second portion disposed on the inner side of the wall defining the outlet passage, such that an underpressure in the pump chamber applies said portion to said wall to obstruct said outlet passage when the volume of the pump chamber increases.

Abstract: A dispensing device for liquid, fluid or pasty products. A support in an opening of a receptacle encloses the product. The support has a central tubular conduit, a pushbutton axially slidably mounted on the support between a rest position and an active position and a product outlet conduit. An intermediate piece of a resiliently deformable material is between the support and the pushbutton. The intermediate piece and the pushbutton define a measured quantity chamber for the product. The intermediate piece has an opening for communication between the tubular conduit of the support and the measured quantity chamber, and sealingly bears against at least one opening for passage between the measured quantity chamber and the outlet conduit of the pushbutton.

Abstract: A pump for dispensing liquids includes a hollow cylindrical support body having an annular channel formed at a first axial end of the body and open towards the internal cavity of the body. A pumping member in the form of a resiliently-flexible, cup-shaped diaphragm has its cavity facing the annular channel. A lever is pivoted about a pin carried by the hollow cylindrical body and includes a first end that engages the cup-shaped diaphragm of the pumping member for collapsing the diaphragm when it is desired to dispense liquid. A tubular element extends through the cup-shaped diaphragm of the pumping member and guides the axial movement of the pumping member.

Abstract: A container-mounted pump dispenser having a body with a vertical cylinder and piston is provided with a one-piece spring/gasket. The spring/gasket is a resilient bowl-shaped spring attached at its lower end about the piston stem and at its upper end comprises an annular gasket to be squeezed between the dispenser mounting cap and the container finish.

Abstract: An assembly including a pump attachment particularly adapted to form an nonaerosol pump sprayer, and a method of using the same. The apparatus desirably includes an attachment having a pump sprayer which is pressurized on the upstroke enabling the sprayer to be shipped and stored in a relaxed position. The attachment includes a body, a coupling, a shaft, a piston, an inlet valve and a biasing member. The body defines an elongate chamber having the first end, second end, and an interior wall extending between the first end and second end. The coupler is sized and shaped to secure the body to the neck of a container. The shaft extends through the opening in the first end of the chamber and defines an internal flow channel. The piston is reciprocally mounted within the chamber and includes an inner annular surface surrounding the shaft and an outer annular surface sized and shaped to form a sealing engagement with the interior wall of the body.

Abstract: A discharge apparatus (1) comprises within the pump housing (2) an integral full-length working member (10) having spring sections (28, 29, 30) and sections located between these which form a valve housing (18), fastening members for connecting to a piston (12) and the like. The spring section in each case may be configured as a helical or torsion spring having a closed spring jacket, thus resulting in simple manufacture and simple assembly with high functional reliability.

Abstract: A smooth actuating, non-throttling dispensing pump with a low force to actuate is provided. The pump will dispense a fluid at a pressure and flow velocity sufficient to allow the fluid to exit through the actuator in a fine particle spray. This action occurs when the actuator, depressed by the finger, moves a displacement piston downward pressurizing the fluid in the fluid chamber. When a predetermined pressure is reached, seals between the piston and stem open permitting the pressurized fluid to exit the fluid chamber through the actuator. The relationship of the frictional and spring forces plus the pressure acting on the piston and stem determines when and how the fluid is dispensed.

Abstract: The venting, precompression pump sprayer, includes a pump cylinder and a pump piston mounted for reciprocation within the cylinder. The piston applies a compression force to the fluid within a variable volume pump chamber. The piston has a hollow stem which serves as a discharge passage. A discharge valve seat is provided at the outlet end of the hollow stem of the piston. A discharge valve member is mounted for reciprocation within the hollow stem of the piston. The discharge valve member has a surface which is in sealing engagement with the valve seat when the pump sprayer is in the discharge closed position. Pressure is applied by the user to the spray cap member in order to reciprocate the piston and the valve member against the bias of a return spring. The discharge valve member has an elongated rod like region which extends downwardly to a valve inlet. An annular ring seal is mounted for liquid tight, sliding engagement on the discharge valve member's elongated rod like region.

Abstract: A liquid dispenser having a hollow shaft slidably received therein and a hollow sleeve securely mounted therein and having the hollow shaft slidably inserted therethrough. The hollow shaft has a plurality of through holes defined therein and alternately communicating with one of the holes defined in the grill formed on the hollow sleeve. One of the holes communicates with a nozzle of the liquid dispenser, such that when one of the through holes is aligned and communicating with the hole, liquid received within the hollow shaft is then allowed to flow out from the nozzle.

Abstract: A spiral spring (30) for a discharge device (1) is made of a plastic material with polygonal cross sections (50), and is made integral with at least one dimensionally rigid connecting body (45, 46), such that the spring (30) may also be integrated with further functional parts of the discharge device (1), thereby reducing a number of components in a discharge pump to as few as two components. The components can be produced in integral form in an injection mold before being translated into a working position with respect to each other prior to final removal from the mold.

Abstract: A dispenser for discharging media, comprising: a dispenser base; a discharge deliverer for forcing the media out of the dispenser; an actuator including a discharge actuator for activating the discharge deliverer between a rest position and an actuated end position remote from the rest position; an outlet duct for the medium; a medium outlet connected to the outlet duct for discharging the media out of the dispenser; a media reservoir bounding a reservoir space and including a reservoir closure for closing the reservoir space; each of the dispenser base, discharge deliverer, actuator, outlet duct, medium outlet and media reservoir forming constituent elements of a preassembled assembly; the assembly having a filling duct for filling a filling medium from outside the dispenser into the reservoir space, the filling duct communicating with the reservoir space as the media reservoir is preassembled with the discharge deliverer; and, a bounding wall projecting toward the reservoir space close to the media reservoi

Abstract: A liquid jetting pump sucks a container liquid into a cylinder (3) through a suction valve (9) by moving a vertically movable member (4) up an down. The liquid is jetted out of a nozzle (29) through a discharge valve (31) of stem (28). A plurality of ribs (10) are provided at a lower edge part of the cylinder. Engagement recessed portions (11) are formed on upper surfaces of the ribs. A lower edge of a coil spring (38) biases the vertically movable member (4) upward. The coil spring is secured to each of the engagement recessed portions (11). Passageways (50) permit a flow of liquid on both sides of the lower edge of the spring.

Abstract: A dispenser (1) comprises for its plunger chamber (13) an outlet valve (20) which after opening on the actuating stroke continues to remain open for a time during the subsequent return stroke due to a delay means (30) so as to ensure a more or less complete venting or filling of the plunger chamber (13). At the end of the delay period the closure maintained in the open position position by friction surface areas (37, 38) is released and automatically jumps back into its closed position. After venting, the effectiveness of the delay means (30) diminishes so that in normal operation substantially only a pressure dependent opening and closing of the outlet valve (20) is provided for.

Abstract: Valve (10) for the discharge of fluids which are under pressure, especially liquids, pastes, creams or gels or the like, with a discharge tube which can be moved in a valve body out of a closed position against the action of a resilient member, especially a helical compression spring, to which tube a pot-like closing member (12), working together with a ring seal made of rubber or the like and closely surrounding the discharge tube (11), is allocated. The discharge tube (11) has, on its opposite end from the discharge aperture (13), a surrounding ring projection (14) with axial indentations (15) which can be snapped into a corresponding ring undercut (16) of the pot-like closing member (12).

Abstract: In a discharge device including two mutually shiftable units (2, 3) permanent magnets (14, 24, 33, 34) are provided for controlling a piston unit (20) and valves (13, 23, 45), the magnetic force of these magnets being provided more particularly to cause a reset movement into the starting position. These magnets may be immersed in the medium or surrounded on all sides by the medium flow, thus enabling mechanical springs to be eliminated and assuring highly reliable functioning.

Abstract: A finger-operable pump includes a pump body, a non-return valve, and an actuating plunger. A plunger return spring biases the plunger toward an elevated, rest position. A piston is carried by the plunger and is movable relative to the plunger between a closed position sealing a discharge passage in the plunger and an open position in which fluid can flow from the pump through the plunger discharge passage and out of the pump. A piston return spring is provided between the piston and the plunger for biasing the piston toward the closed position, and the piston return spring includes a post which is resiliently bendable.

Abstract: Usual liquid soap dispenser and the like are surface-mounted on the wall of a sanitary area and have an electrically or mechanically driven liquid pump, for example a swiveling lever. Besides the liquid pump, a sufficiently large liquid container must be arranged in the housing of the liquid soap dispenser, so that the liquid soap dispenser is bulky and more susceptible to soil and aging in the wet area. A liquid dispenser to be mounted in the wall is to be arranged as a unit behind a tile, so that the liquid container may swivel together with the tile. By actuating a bellows at the top side of the tile, pressure is applied on the liquid container, and liquid soap is ejected through an outlet. The liquid container associated to the tile is forcibly small. The distribution of small portions of liquid soap is thus not ensured.

Abstract: An assembly including a pump attachment particularly adapted to form an nonaerosol pump sprayer, and a method of using the same. The apparatus desirably includes an attachment having a pump sprayer which is pressurized on the upstroke enabling the sprayer to be shipped and stored in a relaxed position. The attachment includes a body, a coupling, a shaft, a piston, an inlet valve and a biasing member. The body defines an elongate chamber having the first end, second end, and an interior wall extending between the first end and second end. The coupler is sized and shaped to secure the body to the neck of a container. The shaft extends through the opening in the first end of the chamber and defines an internal flow channel. The piston is reciprocally mounted within the chamber and includes an inner annular surface surrounding the shaft and an outer annular surface sized and shaped to form a sealing engagement with the interior wall of the body.

Abstract: The trigger sprayer comprises: a body having a cylinder therein; a liquid inlet to the cylinder; an outlet waterway in communication with the cylinder; a piston having an inner end and an outer end received in the cylinder; a fluid path including at least a part of the cylinder and the waterway and extending between the piston and an outlet orifice; a trigger coupled to the body and acting on the outer end of the piston; a precompression valve assembly in the fluid path between the piston and the outlet orifice which is operable to allow liquid in a first part of the fluid path to reach the outlet orifice only after a predetermined pressure is established in the cylinder and to stop liquid from reaching the outlet orifice when the pressure in the cylinder falls below the predetermined pressure and which includes a valve seat in the fluid path, a spring valve element and retaining structure for retaining the spring valve element against the valve seat; biasing structure for biasing the piston away from the pre

Abstract: A trigger actuated sprayer for dispensing disparate liquids separately stored in separate liquid compartments includes a pair of axially aligned, interconnected pistons of relatively larger and smaller diameter reciprocable in unison within relatively larger and smaller diameter cylinders for therewith defining larger and smaller variable volume pump chambers, the smaller diameter piston valving one fluid from its chamber to be combined with the other of the fluids in the other chamber during each compression stroke of the pistons. The combined liquids are dispensed from the chamber upon trigger actuation during each compression stroke.

Abstract: The metering device includes a hollow plunger (5) delimiting a defined volume, mounted so that it can move on a receptacle (1), and communicating with it, as well as an elastic member connecting the plunger to the receptacle, consisting of an elastically deformable cylindrical collar (8) including at least one valve (14) capable of closing off the outlet orifice of the receptacle, and fitted around a closed cylinder (6), having the same axis as the cylindrical collar, integral with the receptacle (1). Application to the administration of pharmaceutical products in fluid form.

Abstract: The invention provides a miniature pump for substances such as cosmetics or pharmaceuticals. The pump comprises a cylindrical body with a bottom intake provided with an inlet valve, in which a skirt encloses a movable piston against the action of a return spring, the piston being provided with a nozzle which passes through the skirt and having an axial channel closed by an internal valve member, biased by a spring. The nozzle is provided at its top portion with an internal shoulder, its bottom portion widening out by contrast into a collar, onto which a bushing is forced by its top edge, the bushing acting externally as a piston sealing gasket, defining under the collar of the nozzle an internal chamber in which the outlet valve member is located, its base being pierced by an axial orifice which acts as an annular seat for the valve member, the return spring for the valve member and the valve member itself being introduced from below and placed inside the nozzle. This pump provides excellent spraying.

Abstract: Helical compression spring designed as a thermoplastic molding and having an end collar on the valve-seat side and an end collar on the actuating side. The technical problem is to provide a helical compression spring having a valve closure member which can move unhindered and is of corrosion-proof design. The end collar on the valve-seat side accommodates a valve closure cap which is made of a thermoplastic and whose tappet is guided so as to be movable in the axial direction of the helical compression spring.

Abstract: A drinking device for a diver includes a water container and a hand pump for pumping water to the diver's mouth. The hand pump includes a piston rod slidably engaged in a housing and two discs secured to the piston rod for separating the housing into an upper and a lower chambers. A passage is formed in the lower portion of the piston rod and has an aperture for communicating with a space formed between the discs. A sealing ring is slidably disposed in the space and may move upward to enclose the aperture for pumping the water in the lower chamber out of the housing. The sealing ring may also move downward to open the aperture for allowing the water in the upper chamber to flow into the lower chamber.

Abstract: A dispenser for dispensing liquid soap including a channel, a port for coupling to a liquid soap container and a nozzle for dispensing liquid soap. A shaft with a piston is slidably mounted through the body for urging liquid soap to the nozzle and a collar received in the channel and mounted onto the shaft with a plurality of gaps. The shaft has an urging ring to permit the collar to slidably move in the body.

Abstract: A metering pump for dispensing a predetermined volume of a liquid or semi-liquid fluid includes a pump body 1, a differential piston 51,52, and a turret 6 secured to a container cap 61. The pump body has a bottom end in communication with the container and a top end 11 capable of being fixed in a desired axial position on the turret. The piston is mounted for fluid-tight sliding in the pump body and has a rest position in which it defines a pump chamber 3, the piston being urged by a return spring 7 towards the turret. The top end 11 of the pump body is axially adjustable within the turret to vary the volume of the pump chamber, and includes integral barb projections 111 that bite into the softer turret material.

Abstract: A cream dispenser head includes an accumulator shell having a dip tube at its bottom, a cap, a one-piece sleeve, and a piston inserted through the sleeve driven to pump cream out of the cream dispenser. The sleeve has a bottom end fitted through a center tube of the cap and disposed within the accumulator shell. The sleeve includes an outside flange around its periphery, adjacent the bottom end, defining an upper annular groove and a lower annular groove, sealingly engaging the inner surface of the accumulator shell. The sleeve includes an outward annular flange stopped against the cap center tube. The piston has a tubular piston body and a spring holder fixedly connected to one end of the tubular piston body, stopped against a spring inside the accumulator chamber. The piston includes a plurality of projecting portions stopped against the inside wall of the accumulator shell and a radial through-hole at one end, adjacent to the spring holder.

Abstract: A miniature metering pump of the type possessing a body provided with an inlet opening out into a metering chamber, associated with an inlet valve having a valve member, and with a piston having a plunger provided with an axial nozzle and flared at its bottom end to form a hood receiving a sealing gasket, its internal channel being associated with an outlet valve having a valve member, wherein said outlet valve member forms a portion of a single elastically deformable part that constitutes said gasket, shaped to have a bottom U-shaped ring assembled round the hood of the plunger, and connected at the top on the outside to a substantially cylindrical skirt for sealing and for returning the piston to its rest position, which skirt runs on from an annular flange for providing sealed connection with the body; and on the inside by a folded valve member that is generally conical or mitral-valve shaped, with a narrow top end carrying a cutout surrounded by a lip that opens to provide an outlet orifice.

Abstract: A low cost trigger sprayer has a housing with a first liquid passage containing a spinner assembly. An elastomeric pump element is positioned generally horizontally such that pulling the trigger retracts the element and releasing the trigger allows the element to extend. The sprayer includes a low cost spinner assembly and low cost valving to control the flow of liquid within the sprayer. In one aspect of the invention, the housing has front and rear sections with the rear section having a saddle portion and being hinged to the front section for pivotal movement from an open position for molding the housing to a closed position for operating the sprayer. In another aspect of the invention, the container has a rear portion which extends upwardly past the neck and defining a saddle recess, with the housing connected to the neck of the container and positioned forwardly of the upwardly extending container portion.

Abstract: A water saver toilet is provided, of the type that applies a vacuum to the toilet bowl outlet to assist flushing, which effectively uses the vacuum and which can be of low height. The toilet bowl outlet includes upper and lower trap devices (44, 50 in FIG. 2) connected by a trapway (46), with a vacuum source applied to the trapway during a flushing to pull out water and debris from the toilet bowl. One vacuum source (FIG. 3) includes a largely horizontal diaphragm (76) which separates a water chamber (82) from a vacuum chamber (80). The water chamber is initially filled with water, which is rapidly emptied during flushing, causing the diaphragm to rapidly fall from an upwardly bowed configuration (76) to a downwardly bowed configuration (76A). The vertically moving diaphragm produces a vacuum in the vacuum chamber that is connected to the trapway.

Abstract: A precompression pump has a cylindrical housing 1 containing a slidable annular plunger 3 controlled by a push-rod 40 which slides in the plunger, and includes an outlet passage 41a, 42a leading to the housing via a side opening 42b. The plunger has an axial annular lip 4 that interacts with the push rod to block or clear the side opening, the push rod being connected to the plunger by a spring 47 which pushes the plunger back into a position in which the side opening is blocked. The spring urges the plunger towards an annular ram 44 which urges the lip 4 radially towards the push rod 40 by wedging it. The ram is configured to abut the plunger 3 outwardly of the lip and at a site distinct therefrom, thereby limiting movement of the ram 44 and the plunger towards each other, and thus limiting the radial force applied to the plunger lip 4.