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 shroud and skeletal body assembly for a trigger sprayer comprises: a skeletal body including a lower portion, an upright body portion extending upwardly from the lower portion and having a forwardly extending piston receiving portion, a waterway defining portion above the piston receiving portion and extending forwardly of the upright body portion, and hook structure extending rearwardly from the upright body portion; and a shroud having a top wall, spaced apart side walls, a back wall, and a short rear bottom wall extending forwardly from the back wall, and latch structure extending between the side walls at a position to be engaged by the hook structure when the shroud is brought into engagement with the skeletal body.

Abstract: A manually operated reciprocating fluid pump comprising a pump housing, a plunger, a piston and a priming valve. The pump housing has an inner surface and a pump chamber defined at least in part by the inner surface. The pump chamber extends axially through the pump housing. The plunger is extends axially downwardly into the pump chamber. The piston is on the plunger and is reciprocally and axially slidable within the pump chamber between a bottom stroke position and a top stroke position. The priming valve is mounted on the plunger radially inwardly of the piston for movement with the plunger. It is configured to be open and thereby permit fluid to flow upward through the pump chamber when the piston stroke moves the piston downward from the top stroke position toward the bottom stroke position and configured to be closed and thereby prevent fluid from flowing upward through the pump chamber when the piston stroke moves the piston upward.

Abstract: A metered dose inhaler comprises a piston which is mounted in a cavity within a body, and is urged by a pre-loaded spring into a reduced cross-section pressure chamber. The piston may be loaded by means of an actuating rod having a handle, and may be latched in a loaded position by a latching means. A liquid drug (e.g. in aqueous solution) is contained in a collapsible bag. Metered quantities of the drug are successively presented in the pressure chamber, and then subjected to a sudden and great increase in pressure, to eject the liquid drug through an atomising head, to reduce it to fine atomised spray of small mean particle size--for example less than 30 micrometers. Non-return valves control the flow of liquid through the device. The sudden pressure pulse is caused be releasing the spring loaded piston, upon depressing an actuating button connected by the latching means.

Abstract: A pump dispenser has a plunger lock-up feature in which the plunger is positively retained against dislodgement by cradling projections on the piston stem against abutment shoulders of a locking sleeve which is fixed within the pump body of the dispenser. The pump body may be of an integral one-piece construction with the container closure, and the container vent opening is controlled by an upstanding sleeve on the piston cup for preserving the integrity of the piston seals.

Abstract: A fluid dispenser for simultaneously dispensing disparate fluids separately stored in separate fluid compartments of a container includes a single pump cylinder defining together with a dual seal piston a pair of in-line pump chambers for separately and simultaneously pumping the disparate fluids along separate discharge paths.

Abstract: The present invention provides a pump for pumping fluids, especially highly viscous fluids such as shampoo, from a main fluid container through a nozzle without unwanted dripping, plugging, or mess. A piston reciprocates in a pump chamber, creating positive and negative pressure alternately in the pump chamber. Positive pressure in the pump chamber initiates a discharge phase of operation, wherein the fluid in the pump chamber is forced from the pump chamber through a discharge valve. Negative pressure in the pump chamber causes both a back-suction phase and a suction phase of operation. Back-suction occurs in the pump chamber immediately following the discharge phase, drawing any fluid remaining in an exit passage back through the discharge valve into the pump chamber. The suction phase starts immediately after the discharge valve closes at the end of the back-suction phase.

Abstract: A pump dispenser, useful especially for lotions, soaps and creams, has a structure which allows locking into a sealed and locked position. The pump dispenser may therefore be transported and stored without fear of accidental actuation or leakage. The dispenser has a valve stem which acts as an inlet valve, as well as a mechanism for sealing the inlet and outlet to the pump chamber when locked. The pump dispenser also has structure to seal the vent passage when in a locked position.

Abstract: A metered dose inhaler for dispensing a fluid medicament as droplets of small mean particle size without the use of pressurized gas or liquefied propellants. A liquid drug is contained in a fluid reservoir, and metered quantities of the drug are successively presented into a reduced cross-section pressure chamber, with non-return valves controlling the flow of liquid through the device. The metered quantity of the drug is then subjected to a sudden and great increase in pressure by releasing a piston into the pressure chamber. The liquid drug is thereby ejected through an atomizing head, to reduce it to a fine atomized spray of small mean particle size, preferably less than approximately 12 micrometers.

Abstract: A dispenser pump, for fitting to a container neck to dispense liquids in small doses, has a pump body (39) with a fixed discharge nozzle (25) and a reciprocable plunger to pump liquid through a valved inlet (41) of a pump chamber (38) and out through the discharge nozzle. To enable the pump body (39) to be recessed into the container neck, the discharge nozzle (25) near the top of the pump chamber and the outlet near the bottom of the pump chamber are connected by a discharge channel (48) extending up through the pump body alongside the pump chamber (38). A tamper evident locking closure holds the plunger (70) in a particular rotational orientation in which it is locked down. Breaking and removing the tamper evident element simultaneously turns the plunger (70) to free it to rise.

Abstract: A foam dispensing pump container, for dispensing foam by mixing air pumped from an air cylinder by an air piston having suction holes in its upper wall and a foamable liquid pumped from a liquid cylinder by a liquid piston having an annular projection on its outer wall, provided with an elastic valve member including a cylindrical wall portion, an outer thin annular valve portion extending outwardly from the cylindrical wall portion, and an inner thin annular valve portion extending inwardly from the cylindrical wall portion.

Abstract: A container-mounted dispensing pump incorporates elastomeric duckbill valves for controlling the flow into and from the pump chamber. A mechanism within the pump employs hinged leaves which cooperate with the pump plunger to effect a pinching and closing one of the duckbill valves when the plunger is disposed in a depressed, shipping position. With the pump plunger held in the shipping position, the closed duckbill valve will preclude leakage of the container contents through the pump.

Abstract: A manually operated reciprocating liquid pump employs both a priming valve and a check valve where the priming valve performs the dual functions of priming the pump and sealing the pump to prevent inadvertent leakage of liquid through the pump when it is not in an upright orientation.

Abstract: A foam dispensing, pump-actuated container to mix air and a liquid at a predetermined ratio has a mixing chamber at a juncture of a liquid flow path and an air flow path from an air cylinder, and the foam is homogenized by a porous sheet-like member provided on the downstream of the mixing chamber, and then dispensed through the dispenser nozzle. A liquid cylinder extends downwardly relative to the bottom surface of the air cylinder, so that a slidable portion of an air piston and a slidable portion of a liquid portion, both constituting the piston assembly of the foam dispensing pump, are set at different elevations for reciprocal movement. A check valve is provided in the air piston so that outer air is introduced into an air chamber defined by the air cylinder and the air piston through a gap around the outer circumferential surface of the air piston.

Abstract: The tamper evident cover assembly is used with a sprayer nozzle of a trigger sprayer of the type including a body, a trigger movably mounted to the body for operating a pumping mechanism upon actuation thereof and a sprayer nozzle at the front end of the body. The tamper evident cover assembly comprises a cover for the nozzle, at least one flange extending rearwardly from the cover and having first coupling structure thereon for coupling to the trigger, a frangible connection between the flange and the cover, and, second coupling structure on the trigger for coupling with the first coupling structure upon the flange, whereby actuation of the trigger will cause the cover to be pulled against the nozzle to cause tensioning and breaking of the frangible connection between the flange and the cover and separation of the cover from the sprayer nozzle, such resulting separation being evidence of tampering with the trigger sprayer.

Abstract: A dispensing unit retainer is formed with a tapered surface into which a dispensing unit, such as a modular pump or the like, is permanently retained with an interference fit. Axially inward movement of the modular pump is limited by a shoulder formed at the inner end of the tapered surface. The retainer can be integrally formed with a container. Once installed in the retainer, the dispensing unit cannot be removed without damage to the retainer or dispensing unit. An upstanding annular wall concentrically surrounding the surface includes an inwardly extending projection for sealing the discharge orifice of the dispensing unit actuator and two axially extending openings cooperating with the actuator to inhibit accidental discharge of the dispensing unit.

Abstract: A child-resistant trigger operated pump dispenser has a latch pivotally mounted on the trigger for preventing trigger actuation. The latch has an arm projecting forwardly of the trigger to facilitate pivotal movement of the latch against the bias of the spring for unlocking the trigger to permit pumping. The latch is automatically returned to its locking position at the end of each pumping operation.

Abstract: Oriented pump having a push-member-distributor (3) axially and angularly movable including at least one lug (35) cooperative with a blocking ramp having an indexed abutment for preventing and allowing at will the depression of the push-member and the disengagement of the push-member from bearing on the head of the piston (2). The seal is maintained between the push-member and the rod of the piston in all positions and the push-member is axially retained independently of the piston. The push-member is oriented on the neck of a given container at will when assembling the pump.

Abstract: A user-controlled manually-actuatable pumpable dispenser for hydraulically-driven discharge of a stored fluid incorporates a flexible wall or web-like barrier capable of containing a highly volatile fluid while accomodating mechanical and hydraulic dispenser-actuating deformations for initiating or effecting a discharge of the stored fluid. The barrier is formed of a relatively thin wall of polytetrafluoroethylene (PTFE) material having a predetermined thickness selected so as to render the barrier sufficiently flexible for accomodating deformations in accordance with which a discharge of fluid from the dispenser is hydraulically effected.

Abstract: A safety sprayer is set forth for use in combination with the spray dispensing of fluid within associated containers. A spray head is selectively locked in a first position and unlocked upon a 90 degree rotation of the spray head relative to an associated closure top. The spray head is vertically reciprocatable relative to an axially concentric and surrounding enclosure tube wherein the closure tube is permanently threaded to the top closure whereupon the enclosure tube must be rotated 90 degrees also relative to a cap threadedly engaging an associated storage container wherein the cap is provided with a plurality of diametrically opposed recesses accepting diagonally opposed flanges integrally associated and orthogonally disposed relative to the enclosure tube that are to be rotated out of the recesses to enable the enclosure tube to sealingly engage a plug seal associated with the mouth of the bottle to enable fluid to be directed from the bottle through the spray head during use.

Abstract: A hand pump for dispensing liquids or pastes from a bottle has a hollow, substantially cylindrical or frusto-conical body open at its two ends. The pump also has a tube fitted around its lower end which dips into the substance to be dispensed. An inlet ball valve is located within the hollow body and moves to allow the liquid or paste to be dispensed during a "draw-in" stage, but closes on termination of the "draw-in" stage to prevent the liquid or paste from returning to the bottle. A hollow coaxial stem projects from the upper end of the hollow body and has its lower end integral with a piston slidable within the hollow body. A dispenser knob which is affixed to the upper end of the stem has a dispensing channel which communicates with an inner cavity of the stem to thereby form an outlet channel for the liquid or paste. An outlet valve allows the dispensed substance to emerge when the dispenser knob is pressed.

Abstract: A method for dispensing a protective fluid is set forth wherein a container is provided formed with a transparent storage portion threadedly receiving a cap thereto. The cap includes a lower end formed with a series of alignment bores for receiving tubular projections integrally formed coaxially upon an exterior surface of the portion of the cap to enable reciprocation of the upper portion relative to the lower portion. Positioning rods are positioned adjacent each of the bores to provide an abutment to enable effective alignment of the projections with the bores. The container is filled with a lemon juice concentrate, whereupon the container is prepared for transport by an individual. The upper portion of the cap may be rotated relative to the lower portion of the cap to permit reciprocation and projection of the lemon juice spray upon an attacker imposing oneself upon an individual.

Abstract: An improved modular lotion pump for dispensing personal products such as lotions, creams, etc., and a method of assembling same is disclosed. The modular pump is formed of several subassemblies that are subsequently assembled to form the modular pump assembly. A cap having means for attachment to a container from which material is to be dispensed may be snap fit onto the modular pump. The pump includes a rotatable locking sleeve for preventing leakage even if the container is squeezed or stepped upon by a consumer and for changing the orientation of the actuator. The actuator may be rotated relative to the locking sleeve to prevent accidental dispensing.

Abstract: A manually-operated dispenser for user-controlled discharge of an internally-stored fluid includes a variable length assembly normally driven to its maximum longitudinal extension for fluid-tightly closing a fluid discharge opening and a vent opening disposed at opposite ends of an elongated housing, a piston bounding an end of an internal fluid reservoir and operatively movable along the housing for volumetrically reducing the reservoir and for driving stored fluid toward and through the discharge opening, and an actuator assembly manually operable by the user for causing controlled foreshortening of the variable length assembly whereby the fluid discharge and vent openings are concurrently opened permitting the forced discharge of a correspondingly controlled volume of stored fluid.

Abstract: A manually operated childproof dispenser has a plunger head located at an upper end of a housing and is axially displaceable from an initial position and rotatable relative to the housing. The plunger head has an annular skirt with a notch. A ring having a notch surrounds and is rotatable about the skirt. The ring is axially displaceable together with the plunger head. A dispensing nozzle extends radially outward from the housing and is located below the ring. The notches are aligned with the nozzle to facilitate depression of the plunger head to dispense the desired product.

Abstract: A tamper evident manually actuated pump sprayer includes a locking device which, according to one embodiment, extends between the trigger actuator and a confronting portion of the pump body and abuts against a trigger flange. In another embodiment, the device engages the underside of the trigger and snap fits into the sprayer nozzle cap located adjacent the trigger.

Abstract: A spraying apparatus is disclosed which employs a manually operable pump adapted to discharge a dosage of a liquid, such as a pharmaceutical preparation, from an associated container. The pump includes a reciprocating stem which extends through a screw cap of the container. An actuator is mounted on the stem of the pump for conjoint reciprocating movement therewith relative to the screw cap. Upon the extension of the actuator and hence the stem, liquid is withdrawn from the container by the pump. Upon the depression of the actuator and hence the stem, the liquid is delivered to a spray nozzle formed integrally with the actuator and then discharged from the nozzle in the form of a spray or mist. In order to ensure the smooth and effective operation of the spraying apparatus, lugs on the actuator cooperate with ribs on the screw cap to inhibit the actuator from rocking on the stem as the actuator is depressed.

Abstract: In a liquid dispenser having a vertically reciprocable plunger, the plunger is immobilized by use of a locking system. The locking system comprises a turret collar which is mounted on the cap of the dispenser. A discharge channel member contains a discharge passage which communicates with the vertically reciprocable plunger and the member extends laterally substantially beyond the circumference of the turret collar. The collar has a vertical slot therein adapted to receive the discharge channel member and to permit full vertical movement thereof in conjunction with the operation of the liquid dispenser. A locking groove in the turret collar communicates with the vertical slot and is adapted to retain the discharge channel member, therefore immobilizing the vertically reciprocable plunger, after rotation of the turret collar or rotation of the discharge channel member in a horizontal direction.

Abstract: A manually-operated dispenser for user-controlled discharge of an internally-stored fluid includes a variable length assembly normally driven to its maximum longitudinal extension for fluid-tightly closing a fluid discharge opening and a vent opening disposed at opposite ends of an elongated housing, a piston bounding an end of an internal fluid reservoir and operatively movable along the housing for volumetrically reducing the reservoir and for driving stored fluid toward and through the discharge opening, and an actuator assembly manually operable by the user for causing controlled foreshortening of the variable length assembly whereby the fluid discharge and vent openings are concurrently opened permitting the forced discharge of a correspondingly controlled volume of stored fluid.

Abstract: A dispenser pump comprises a pump chamber having a flexible wall for altering the volume of the chamber. The flexible wall is a polygonal pyramid, preferably five-sided, with facets interupted by respective cylindrical surface portions inclined to the facet so as to induce bending thereof when the wall is flexed on actuation of the pump, thereby producing a force tending to restore the flexible wall to its rest condition. An inoperative condition of the pump may be achieved by relative rotation of two body parts of the pump about the axis of a slidable telescopic guide connection between the flexible wall and a relatively fixed body part, a discharge nozzle of the pump being out of register with an outlet port of the pump in the inoperative condition. The flexible wall, an essentially rigid boundary portion thereof, an essentially rigid guide member that moves with it and the discharge nozzle may be formed together as a one-piece integral part of e.g. polypropylene.

Abstract: A lockable fluid dispenser cap is used with a dispensing pump for dispensing a fluid product from a container. The dispenser cap includes a container closure, locking fingers mounted to the closure, a lock actuating member rotatably mounted to the closure, and a pump actuating member coupled to the lock actuating member. The closure mounts the pump in the container. The locking fingers are mounted to the closure and normally spaced in unlocking relation from the pump piston but are yieldably flexible for bending toward the piston. The lock actuating member has cam elements which upon rotation of the lock actuating member forcibly bend the fingers toward the piston and into a locking relation therewith. Reciprocal movement of the pump actuating member relative to the lock actuating member is used to actuate the piston. Also, rotational movement of the pump actuating member is used to cause rotation of the lock actuating member therewith for bending the fingers from their unlocking to locking relations.

Abstract: A dispenser for lotions, creams and the like has an annular collar in the form of a rotatable cam ring which may be turned to rock an actuator toward a dispensing, open position or toward a closed, non-dispending position. The cam ring has cam tracks that support the actuator when in its open, dispensing position so that finger pressure exerted on the actuator to pump products from the dispenser does not inadvertently rock the actuator toward its closed position. In preferred forms of the invention, a wall section formed as part of a shroud surrounding the actuator is yieldably biased in an inwardly direction, and snaps over the outlet of the actuator to close the outlet channel once the actuator has been pivoted toward its closed, non-dispensing position.

Abstract: A novel composition comprising one part by weight of a viscosity-imparting agent and 0.1-100 parts by weight of water is disclosed. Usable viscosity-imparting agents are synthetic polymer resins, polyols and hydrophilic organic substances. The viscosity of the composition is, preferably, in the range of 5-20,000 poises. The composition is suitable as sealant for sliding contact sections, e.g. in an aerosol container using a propellant such as liquefied- or compressed gas.

Abstract: A thrust piston pump for the delivery of media has a spring constructed in one piece with the piston rod of a piston unit and located in the pump chamber, which is guided on a sloping surface formed by an internal cone. The piston rod is constructed in such a way that an axially resiliently compressible, sleeve-like piston collar can be fitted from the outer end of the piston rod. The fastening cap can be constructed in one piece with a flange edge, a ring packing and/or a component of the cylinder casing, particularly its cylinder cover. This leads to high pump reliability, in the case of simple construction and easy assembly.

Abstract: A trigger-actuated sprayer device useful in connection with a container from which liquid is to be dispensed; the sprayer device has a barrel at the upper part of the sprayer body and a central bore below the barrel; a liquid inlet port is provided in the bottom of the body and an outlet port near its top; a spray chamber is defined within the central bore, and an inlet valve and an outlet valve are respectively associated with the individual ports which are in communication with the spray chamber; an upper bore terminates in an opening at the top of the device body, the upper bore being in communication with the barrel such that the inlet valve is closed when the trigger is depressed and the outlet valve is concurrently opened so as to permit liquid to flow from the spray chamber into the barrel.

Abstract: A sealing composition which stops the leakage of a liquefied or compressed gas through a sliding contact section, includes 1 part of a hydrophilic organic polymer and 5-200 parts of a polyol. Usable hydrophilic organic polymers are synthetic and natural polymers including polysaccharides and their derivatives, which have average molecular weights of 10,000-10,000,000. Preferable is pullulan or elsinan which substantially consists of repeating maltotriose units. Any polyols are usable in the invention whether they are in non-crystalline form, providing that they bear 2-20 carbon atoms and hydroxyl groups. The present composition may be further admixed with water and/or non-ionic or anionic surface-active agent in an appropriate amount of facilitate the preparation of the composition and to regulate the viscosity of the composition.

Abstract: The dispensing pump has an actuator button which is depressible immediately alongside of the stationary discharge spout of the pump so that, when the button is fully extended in its standby position, its upper surface is approximately flush with the upper end extremity of the spout. A locking cover on the button may be slid into a closed position at this time covering the open end of the spout to both seal the latter and securely lock the button against accidental depression. An alternative embodiment provides a discharge passage within the button itself which may be opened and closed by appropriate positioning of a slide cover carried by the button.

Abstract: A dispenser for attachment to liquid containers is disclosed which allows a contained liquid to be dispensed by pumping rather than pouring from the container, having a top cylinder containing a pump which is located over a mouth of the container, so that the mouth of the container contacts a gasket of relatively large surface area, and further having a base member pivotally attached to a top cylinder which is pivoted underneath the container to force the mouth of the container against the gasket to provide a seal. The relatively large surface area of the gasket and the design of the base member allow the device to be used with containers of varying size, and the seal achieved thereby allows pump of simple design to be incorporated.

Abstract: A head depression type dispenser comprises a cylinder formed of an elastic material such as rubber. The cylinder is arranged between a head and a cap, and is constructed to operate as a piston for sucking and pressurizing liquid by axial deformation of the cylinder upon movement of the head. When the depressing force applied to its head is removed after the cylinder is deformed, the cylinder will return to the original shape by its own elasticity. In addition, a sealing piece extends from the cylinder into the passage of the head, thereby closely contacting the inner wall of the passage to form a secondary valve. The sealing piece becomes isolated from the inner wall of the passage when the hydraulic pressure in the cylinder exceeds the elasticity of the sealing piece, allowing the flow of the compressed liquid through the passage, and closely contacts the inner wall of the passage by the elasticity of the sealing piece when the hydraulic pressure becomes lower than the elasticity of the sealing piece.

Abstract: The plunger of the pump has a radially extending lug near its upper end which can be inserted down into a notch in the stationary pump collar when the plunger is fully depressed, so that when the plunger is then rotated in a clockwise direction relative to the collar, the lug is brought under an overhanging ledge on the collar to releasably lock the plunger in its fully depressed position. In order to deter unlocking, the lug of the plunger and the interior wall of the collar are provided with mutually interengageable structures that permit the lug to be rotated substantially without significant resistance into a final or fully locked up position against a shoulder beneath the ledge but to be held in such fully locked up position against unlocking movement unless substantial, counterclockwise-directed force is applied.

Abstract: A dispensing pump of the pressure accumulating type includes an assembly of a pump body and a separate piston member, the body including a closure cap for securing the assembly in fluid tight communication with the opening of a container of flowable product to be dispensed, a plunger/accumulator forming a variable volume pump chamber together with the piston and being reciprocable relative thereto, and a plunger head surrounding the plunger. The plunger has a vent seal for opening and closing a vent chamber defined around the piston. The closure cap is of a hard and durable material, while the separate piston is softer and more compliant which gives its lip seal good definition which avoids pump chamber leakage as it precisely conforms to the inner diameter of the plunger and to any irregularities thereof.

Abstract: A fuel priming system for spark ignited internal combustion engines includes a manually actuated plunger pump for delivering liquid fuel from a tank to a reservoir chamber formed in part by a flexible diaphragm. A fuel injection passage leads from the reservoir chamber through a flow restricting orifice to an injection point formed in the engine intake air flow passage downstream of the carburetor venturi. The injection system provides for enriching the fuel-air mixture during cold starting while minimizing the chance of engine flooding. The finite fuel volume in the reservoir chamber also provides a sufficient quantity of fuel for automatic control of a rich fuel-air mixture during engine warm-up.

Abstract: A liquid dispensing pump is capable of being locked in one embodiment in a fully raised position of the plunger, in another embodiment in a fully depressed position of the plunger and in a further embodiment in a fully raised and/or fully depressed position of the plunger relative to the pump body. Each pump has a vent chamber which is closed in the locked position to avoid leakage of product from the container, and which is opened by a depending skirt on the plunger as it moves into juxtaposition to an enlarged diameter section in the vent chamber.

Abstract: The pump is clamped to the top wall of a container closure by a pair of opposed, upper and lower clamping surfaces on the pump body which position the body to project down into the container. The lower clamping surface takes the form of a circular flange which is integral with the pump body and which is itself normally clamped between the top wall of the closure and the upper edge of the neck of the container when the neck is only slightly larger than the pump body, thereby preventing rotation of the body when the pump plunger is rotated to either lock or unlock the same from a fully depressed, stored position. When the pump is used on a large closure having a wide neck whose upper edge therefore fails to clamp against the pump flange, the pump body will nonetheless be held immobile by a series of flat surfaces therearound which matingly interlock with complimentally configured flat edges in the closure opening through which the pump body extends.

Abstract: The plunger of the pump has an axial lock by which the plunger can be locked down in its fully depressed position during periods of non-use and a rotary lock for preventing inadvertent rotation of the plunger out of its locked down mode. The rotary lock includes a pair of yieldably spreadable arms which circle the collar of the pump and latch against one another in overlapping, embracing relationship so that the lock is held tightly on the collar against rotation relative thereto. A locking bar integral with the arms and of essentially rigid construction projects up out of the plane of curvature of the arms and has a saddle-like notch at its uppermost tip which complementally receives a portion of the spout associated with the discharge head of the plunger, thereby rendering the plunger rotatively immobile relative to the collar.

Abstract: Discharge valving for a liquid dispensing pump having a reciprocable plunger is in the form of a laterally extending bunsen valve having an annular spring washer which resiliently bears against an annular valve seat adjacent the discharge opening. The loading of the valve is controlled by valve positioning lugs between the top of the plunger and an overlying plunger head. The plunger may be immobilized in a fully raised position above the pump body or in a fully depressed position relative to the pump body by locking fingers positively deflected into and out of the path of reciprocation of a stop shoulder on the plunger head.

Abstract: A manually operable trigger pump has a pump body, a circular cap disposed below the body and adapted to engage a container having material to be pumped out, a generally vertical trigger pivotally coupled at its upper end to the body and a linkage coupled at one end to the trigger intermediate its ends and extending from the coupled end into the body. The trigger has a surface adjacent the body. The surface has a longitudinally extending groove therein. A locking device is detachably securable to and is manually rotatable about the cap. A generally horizontal arm integral at one end with the device extends radially outward from the cap. The other end of the arm has a tip which is engagable with and disengagable from the trigger surface groove. The device is rotatable to a locked position at which the tip engages the groove. At this point, when the trigger is squeezed, the movement of the trigger is insufficient to actuate the pump.

Abstract: A combined pump and tap assembly for a beverage container includes a cylinder for a hand pump and a gas tube projecting downwardly from the bottom wall of the cylinder and communicating with the interior of the latter. A hollow boss rigid with the bottom wall provides a connection for a downwardly projecting draw tube and a fitting for a dispensing hose is rigid with the boss and communicates with the draw tube through the boss. The cylinder, its bottom wall, the boss and the fitting are made as an integral unitary part so as to effectively preclude the user from disabling the hand pump and connecting the gas tube to another pressure source which may be unregulated and cause the container to explode.

Abstract: The reciprocable plunger of a fluid dispenser is immobilized by a frangible strap extending about the plunger and engaging a locking ledge on the container cap. Severance of the strap unlocks the plunger and permits plunger reciprocation.

Abstract: This invention relates to a dispenser for paste-like products of the type having a container containing a product and closed at one end by a slidable piston in sealing engagement with the inner wall surface thereof, the other end being provided with a head member carrying on applicator and forming a pump chamber the volume of which is variable by the exertion of exterior pressure, the pump chamber being closed towards said container by a first check valve adapted to open only towards the pump chamber, and towards the outlet of the applicator by a second check valve adapted to open only towards said outlet.