Abstract: A squeeze sprayer device is attached to a squeezable container of fluid. The device includes a capped cylinder containing an axially moveable discharge valve in the form of an air piston which unseats in response to air pressure to open the discharge upon squeezing the container for producing a fine mist spray as pressurized air admixes with the liquid at the discharge orifice. A one-way valve controlled air vent on the piston closes during the spray operation. Upon release of squeeze pressure, the piston returns, its one-way valve opens for venting, and the piston seal cuts off the spray.

Abstract: A fluid pressure opened reclosable pouring spout for a flexible container is formed by a sleeve assembly axially inserted into the exit end of the pouring spout for normally closing the latter. The sleeve assembly comprises a first sleeve bonded to the inner surface of the pouring spout of the exit end portion which contains an annular inwardly projecting flange-like wall slidably receiving a piston sleeve valve normally sealing with the outer end of the first sleeve and biased to an open position by a spring or weight when the walls of the container are manually squeezed, to apply liquid pressure against the closed end of the piston sleeve valve. The wall of the piston sleeve valve is provided, adjacent its outer end, with a circumferential row of apertures for discharging liquid when the piston sleeve valve is opening. The inward end of the piston sleeve valve is longitudinally slotted in circumferential spaced relation for inserting the sleeve valve into the wall sleeve.

Abstract: An assembly for mixing two different liquid components includes a container having two barrels, and an exit conduit detachably connected to the container. The exit conduit includes a static mixer along with a check valve located between the static mixer and an outlet of the exit conduit. The check valve prevents the dripping of mixed materials from the exit conduit between intended dispensing operations, and may be discarded along with the exit conduit after extended interruptions between dispensing operations.

Abstract: A multiple use container for dispensing fluids, particularly preservative free preparations in variable doses, includes a squeezable container for holding the fluid. A dispenser assembly associated with an exit opening from the container includes a hollow dispensing tip which encloses a fluid valve. The fluid valve utilizes a piston head which sealingly seats in a valve seat. A resilient biasing means holds the piston head in a normally sealed or closed position. A second opening in communication with the interior of the bottle is covered by a hydrophobic filter having a pore size that prevents microbial contaminants from entering the container but prohibits fluid from leaving the container. The bottle is squeezed to force fluid to overcome the biasing pressure of the fluid valve to dispense fluid from the bottle. Upon release of that pressure, the fluid valve closes and air passes through the filter to replace the dispensed fluid. The air entering the container is sterilized by the filter.

Abstract: In a flow mixer for liquid or pasty media, the flow of the mixture is to be interrupted instantly at the end of the usually intermittent discharge of material to prevent continued flow or drooling. To this end, a check valve with predetermined opening pressure is provided, arranged in series with the mixing elements. The valve may be realized in various structural types, e.g. as diaphragm valve and may be arranged either continguous to the mixing elements in the orifice region or preceding the latter in the entrance region of the mixer. The mixer may alternatively contain only one valve part, namely a resiliently movable valve body, which cooperates with the orifice region of a connected double-discharge cartridge.

Abstract: A squeeze bottle foam dispenser with improved foam consistency throughout the range of manual squeeze conditions. The foamer includes a pressure operated valve for simultaneously restricting flow of the compressible and incompressible fluids until a predetermined threshold pressure is developed within the bottle by manual deformation thereof. Thus, foam is not dispensed from the container until a pressure is developed within the bottle sufficient to produce a desirable foam. The disclosed foamer is for storage and operation in the inverted orientation. This avoids the necessity of an extended spout and its concomitant problems.

Abstract: In a liquid filling machine wherein a liquid is fed in a specified quantity at a time from a metering cylinder to a filling nozzle by the operation of a piston housed in the cylinder, a device for preventing the liquid from dripping from the filling nozzle comprises a check valve disposed in the nozzle and movable upward or downward by a change in the internal pressure of the metering cylinder produced by the operation of the piston. The upward movement of the valve produces a negative pressure within the nozzle to prevent the liquid from dripping from the nozzle. The negative pressure is variable in accordance with the properties of the liquid by adjusting the stroke length of upward or downward movement of the check valve.

Abstract: A dispensing device for a bag container a liquid, made of flexible material and forming upper and lower walls through which holes are formed for receiving the device, has a tubular lower part with a top flange which is sealed to the inside of the lower wall and depends through the hole in the lower wall. A tubular upper part has a top flange sealed to the inside of the upper wall and depends through the hole in that wall and is telescoped inside the lower part so as to move up and down in the lower part. The top of the upper part forms a piston such as a collapsible dome extending upwardly through the hole in the upper wall and exposed on the outside of the upper wall and therefore exposed on the outside of the bag. The lower part has a lower end having a self-closing valve and has at least one side port normally open to a space between the flanges and therefore between the bag walls.

Abstract: A liquid filling nozzle comprising a vertical tubular nozzle main body having a reduced diameter portion at an intermediate portion of its height, a damper attached to the lower end of the nozzle main body and pivotally movable upward and downward, a resistant member extending within the nozzle main body from the reduced diameter portion to a portion therebelow and movable upward and downward for acting against a liquid flowing downward, a member connecting free ends of the damper to the resistant member, and a resilient member biasing the resistant member upward.

Abstract: In an outer container (1) there is disposed an inner container (2) which contains the product to be withdrawn in portions. On the top of a container cover (4) there is a diaphragm-like body (6) with a bore (7) for the emergence of the product. When not in use, the diaphragm-like body (6) lies tightly against a plug (8) which closes the bore (7). The plug (8) is joined by ribs (10) to a ring (11) to which the inner container, consisting of soft material, is fastened. The container cover (4) and the ring (11) are joined together by interlocking. When the outer container (1) is squeezed a pressure develops in the interstice between the two containers, which interstice can be shut off by an air valve (15), and by this pressure a certain amount of the product is forced out of the inner container (2) between the plug (8) and the yielding diaphragm-like body (6), whereupon the diaphragm-like body (6) returns again to the sealing position. The product is thus always protected against the access of air.

Abstract: A high pressure metering apparatus for ejecting a fluid such as a polishing aste comprises a housing having a storage chamber, a spring-loaded, stroke-adjustable compressed air piston-cylinder device with a plunger, an injection nozzle, and an adjustable valve device closing the storage chamber off from the injection nozzle. The valve device includes a valve ball and a valve plate. A piston element is fixed to the housing, to which piston element the valve ball is concentrically fixed, and on which a cylinder element is displaceably mounted. The cylinder element is closed by the valve plate of the valve device, which has a valve seat situated opposite the valve ball. The injection nozzle is located downstream of the valve plate and is fixed to the cylinder element. A compression spring bears against the cylinder element and a clamping cap.

Abstract: A closure for containers comprises an automatic opening-closing mechanism and an outside closure member having a pour opening. The automatic opening-closing mechanism includes a plug member having a centrally formed air introduction hole and a plurality of liquid discharge ports formed around the air introduction hole, a first valve member for opening and closing the liquid discharge ports and a second valve member for opening and closing the air introduction hole.

Abstract: A fluid dispensing device having a container with a collapsible body section and an upper neck which is adapted to receive therein a dispensing head which is automatically self-closing. The dispensing head has a housing defining a dispensing channel vertically therethrough in which a valve is positioned having a valve head for abutting a valve seat defined in the upper portion of the dispensing channel and a valve stem extending downwardly to a valve flange. A resilient member is secured to the upper face of the valve flange and in contact with the bottom surface of the housing to urge the valve into a closed position. The spring is positioned outwardly from the valve stem and exerts bias at multiple exterior points about the valve flange to create a completely equal and upwardly directed bias in order to maintain smooth operation of movement of the valve between an open and a closed position.

Abstract: A plastic squeeze bottle has a dispensing end having a central, closed-ended, cone-shaped portion which serves as a stem or core for a valve assembly which includes an elastomeric seal which overlies and resiliently grips and circumferentially seals around the stem. The seal also covers apertures in the bottle end adjacent the stem. A small central aperture in the seal where it overlies the closed end of the stem, enables dispensing contents from the bottle when the bottle is squeezed, as the resulting internal pressure causes the seal to balloon slightly away from the stem and permit passage of saline solution from the bottle through the bottle end apertures and seal central aperture. When the squeezing stops, the seal resiliently retracts against the stem and closes the bottle. A snap-on overcap assembly has seal control and closure maintenance features to avoid accidental dispensing of bottle contents due to unintentional squeezing of the bottle when the overcap is closed.

Abstract: A pressure regulator-reducer in a first embodiment comprises two pistons (6, 7) provided with elastically deformable rings (9, 10) mounted in a bore (5) and held by a spring (12) bearing against a bulkhead packing (13) surrounding an outlet orifice (16). The double piston defines three chambers (19, 20, 21) respectively in communication with the product under pressure, the atmospheric pressure and the outlet. Facing the ring of the piston (6) on the outlet side there is provided a narrow longitudinal slot (24). A second pressure regulator-reducer is also disclosed that uses a slide mounted in a bore. The side has a piston and a spaced shoulder. The shoulder and piston controls flow along the bore to a dispensing orifice. A spring, mounted in the bore, controls the movement of the side in response to fluid flow.

Abstract: A portable dispensing system includes a hollow body having two ends. A head is removably mounted on one end of the body and has an opening therethrough. A piston mechanism is removably mounted at the other end of the body. A valve mechanism for opening in response to pressure created by the piston mechanism is mounted on the head adjacent the opening. The valve mechanism includes a casing, a jaw slidably mounted on the casing for movement between an opened and closed position, and a spring mechanism urging the jaw to the closed position and yielding to pressure increases in the body. A flexible pouch is provided for receipt in the body. The pouch includes a main body made of a flexible material and a discharge portion which is integral with the main body. The discharge portion is capable of passing through the opening of the head and is for engagement with the jaw. Preferably, the pouch is fitmentless.

Abstract: A valve device for use in filling cartons includes a tubular housing containing a valve member comprising a closure part co-operating with a valve seat at the lower extremity of the housing, and a driving part movably received with clearance in the housing. During the latter part of the opening movement of the valve member against a spring, the clearance increases smoothly and considerably, and the driving part reaches a force equilibrium position at which the clearance is considerable. Two grooves formed in the housing and the valve member immediately below the annulus of sealing bound an annular enclosed space for receiving liquid squeezed out downwardly at the valve seat.

Abstract: A liquid dispensing apparatus is provided having a container for storing the liquid to be dispensed, an anti-drip valve cartridge connected to the container and a needle element connected to the valve cartridge. A device is provided for pressurizing the container for the duration of a time interval and for depressurizing the container to atmospheric pressure, simultaneously, with the end of the time interval. The valve cartridge has an outlet portion which sealably connects an outlet opening thereof in registry with the bore of the needle element. A pressure activated poppet valve can be provided in the valve cartridge to seal the outlet opening upon the depressurization of the container. After depressurization, a volume of liquid is left in the needle element which exerts a pressure at the end of the needle element that is less than the incoming atmospheric pressure.

Abstract: This invention relates to powder dispensers of the squeeze bottle type which are so constructed that a small child would be unable to manipulate the dispensing action and would thus be protected from ingestion or inhalation of the dispenser contents.

Abstract: The drawings and description disclose a liquid filler arrangement including upper and main bodies and a lower sleeve nozzle, with a diaphragm assembly mounted between the main and upper bodies and an inlet formed in the side of the main body. Combined valve and orifice mechanism is operatively positioned substantially at the juncture of the main body and the sleeve nozzle, and one of a diffuser, a lip seal, or a valve is located at the bottom end of the sleeve nozzle, each of which supports a column of liquid product, the diffuser and lip seal by capillary action, and the valve by virtue of being closed. Upon a measured volume of liquid product being pumped into the side inlet by a remote timed piston device, an equivalent measured volume is discharged from the sleeve nozzle through its diffuser or opened lip seal or valve into a container which may be mounted around the sleeve nozzle and filled as it is being pulled from around the sleeve nozzle by a suitable external arrangement.

Abstract: A self-closing dispenser device having a generally rigid valve support with a two-way passageway for dispensing in one direction and return air flow in the other direction, a diaphragm on one side of the valve support, a valve member on the other side of the valve support, porting in the diaphragm, a valve stem connected to the diaphragm member and extending through the two-way passageway, and having a valve closure surface and a dispensing opening in the valve member, normally closed by the valve closure surface and movable outwardly for ejection of material, and the valve stem and closure surface being movable inwardly away to permit re-entry of air.

Abstract: A dispensing valve assembly for accurate volumetric dispensation of delicate fluids is disclosed, suitable for use with a fluid dispensing system. The valve has a poppet that is movable within a chamber. A bias spring or external operator urges the poppet towards the top of the chamber, so that a circumferential elastomeric seal engages with the chamber wall. Pressure of fluid to be dispensed entering the top of the chamber forces the poppet towards the bottom of the chamber, disengaging the seal from the chamber wall and allowing fluid to pass around the seal and then out of the chamber through an outlet opening at the bottom of the chamber. Downward travel of the poppet is stopped when the bottom of the poppet contacts the bottom of the chamber. Release of fluid pressure allows the poppet to be forced towards the top of the chamber once again, engaging the seal with a chamber wall.

Abstract: A homogenizer device, in particular for the production of whipped cream, comprising in combination, the following components: an external sleeve and an internal sleeve between which is formed a convoluted labyrinth, the internal sleeve housing a valve element which forms with it a chamber communicating with said labyrinth and with the delivery tube for the base mixture, said valve element consisting of a stem bearing a valve at one of its ends and a valve at its opposite end, the former being a valve for controlling the dispensing of the whipped cream and the latter being a valve for controlling the conduction of the mixture through said labyrinth, said valve element being also translatable against a counteracting spring.

Abstract: A self-closing squeeze bottle dispensing valve includes a vent for venting the bottle after squeezing. The valve is made with a cap which can be rotated so as to positively shut-off not only the valve's dispensing orifice, but also its vent, the two shut-offs being simultaneous.

Abstract: A dosing pump for metering a predetermined quantity of a displaceable material, usually a solvent-containing fluid substance, per stroke of the pump, comprises a chamber connected by an intake valve with a source of the material and with a discharge valve with a location into which the material is to be dispensed. The chamber is provided with a drive member, e.g. a membrane or piston, preferably actuatable by fluid pressure and, according to the invention, at least one displaceable member whose stroke is such that it corresponds to a displacement of material less than the displacement by the drive member and is effective upon retraction of the drive member to allow the material to recede slightly from the outlet of the pump without re-entering the chamber.

Abstract: An automatic dispensing cap for dispensing product contained in a squeeze-type container. A two-way valve-head comprising an upper disc closure is constructed so that it seats on the top edge of the inverted conical spout of the cap. In a preferred embodiment, the disc closure has a centrally-located air bore and depending tubular stem. Upon application of manual squeeze pressure, the valve-head unseats from the cap spout allowing product to flow through. When the squeeze pressure is released, a lower cruciform portion of the two-way valve-head acts as a spring to seat the upper disc closure, cutting off the flow of product, and allowing air to reenter the container through the central disc air bore and the tubular stem. An inverted cup-shaped check-valve closes the central air bore of the tubular stem during the dispensing phase, to prevent product from exiting therethrough.

Abstract: Herein disclosed is a trigger type liquid injector which includes a body mounted to stand on a liquid container, an injection cylinder extending in a horizontal direction from the upper portion of the body, and pumping means arranged at such an interior angle as is defined by the body and the injection cylinder. There is mounted in the base of the injection cylinder a discharge valve which is opened by the internal pressure in a pump chamber when this pressure exceeds a predetermined level. There is mounted on the front portion of the injection cylinder a nozzle cap which can change the states of the liquid being injected. The pumping means is actuated by the engagement between a recessed portion formed in a piston member and a trigger.

Abstract: A two-piece nozzle, for fitment to hand actuated liquid pumps having a barrel portion and a bore therethrough for passage of liquid, is disclosed. The nozzle has an integrally formed nozzle cap which is mounted to the end portion of the barrel. Enclosed within the nozzle cap is an integrally formed sealing structure which is attached to the barrel of the pump. The sealing device provides a peripheral liquid-tight seal around the barrel between the nozzle cap and the barrel. It also provides a check valve which is movably positioned at the mouth of the bore to provide a liquid-tight bore seal. The check valve is biased to provide the liquid-tight bore seal which bias can be overcome by liquid pressure in the bore developed upon actuation of the pump.

Abstract: A nozzle for fitment to hand actuated liquid pumps having a barrel portion with a bore therethrough for passage of a liquid is disclosed. The nozzle features an integrally formed nozzle cap which is mounted to the barrel and which encloses an integrally formed sealing structure. The sealing structure provides a peripheral seal to provide a liquid-tight seal around the barrel between the nozzle cap and the barrel. The sealing structure also provides a check valve portion which is movably positioned at the mouth of the bore. The check valve is biased to form a liquid-tight bore seal. This bore seal is overcome by liquid pressure which builds in the bore upon actuation of the pump. Also provided is a spray member which is fittable within the nozzle cap and which is in abutment with the end wall of the nozzle cap. The spray member, along with the wall of the nozzle cap which it abuts, form a path for the liquid as it is dispensed, which path will cause the liquid to break up and form a spray pattern.

Abstract: A three-piece nozzle is disclosed, for fitment to a hand actuated liquid pump having a barrel portion with a bore therethrough for passage of liquid. The nozzle features an integrally formed nozzle cap which fits around the end portion of the barrel. Enclosed within the nozzle cap is an integrally formed nozzle seal which forms a peripheral liquid-tight seal around the barrel between the nozzle cap and the barrel. Also provided is an integrally formed check valve which is movably positioned at the mouth of the bore and which is biased towards the mouth of the bore to form a liquid-tight bore seal. The bias is overcome, to open the liquid-tight bore seal, upon actuation of the pump which provides liquid pressure in the bore to act against the check valve.

Abstract: Reciprocating manual dispensing pump comprising a delivery valve provided with a shutter and associated with the movable part of the pump, and a suction or intake valve comprising a single piston movable against a spring within a tubular body forming therewith a compression chamber, which is hydraulically connected with an expansion chamber of a larger cross-section in the piston defined by a resiliently deformable part with which the delivery valve shutter is associated for closing a delivery conduit in such a piston.

Abstract: A valve apparatus is integrally molded from an elastomeric material so as to form a valve seating portion including a valve opening, a valve member and connective strands extending from the valve seating portion to the valve member. The valve member is initially molded on one side of the valve opening, and a portion of the valve member is passed through the opening to the other side thereof. The connective strands are stretched while passing a portion of the valve member through the opening so as to create a bias on the valve member which tends to seat the valve member on the other side of the opening.

Abstract: A continuously refrigerated, automatically ejected block ice machine having means to measure and supply a specified amount of water to a water distributor which appropriately directs each measured amount of water to each of a plurality of product cells in which the ice is formed, the product cells, being an integral part of the evaporator of a refrigeration system. The water which is permitted to enter the bottom of the product cell forcing up the frozen block of ice where it is harvested. Upon the completion of the water entering the product cell, means are provided to remove water proximate the cell to prevent freezing. The operation is automated through each of the product cells, each cell filled with new water and ejecting the frozen ice block, the new water permitted to be frozen and the operation repeated.

Abstract: A valve intended to open in response to a pressure difference between the interior of the valve and the exterior thereof comprises a diaphragm which in its closing position is conical. The diaphragm has an opening which is normally closed by means of a valve stem. Arrangements are made to prevent communication between the interior of the valve and the exterior thereof until said diaphragm has been deformed to a substantially planar shape.

Abstract: A fluid injector unit wherein fluid from a chamber is deposited through an outlet passage in the chamber and onto a surface through the action of a first piston which moves in the chamber and a second piston which reciprocates within a bore in the first piston. Self sealing valve means are carried by the second piston and operate to urge the second piston toward a closed position in which it closes the outlet passage against fluid flow. Movement of the first piston within the chamber pressurizes the fluid therein and forces the second piston away from the closed position. Sealing means, also carried by the second piston, are then operative to prevent fluid leakage between the second piston and the bore as well as to act as stop means to regulate the range of motion of the second piston away from the closed position.

Abstract: An injection nozzle for plastics material comprises a rear tubular body and a hollow front body with a nozzle orifice at one end and detachably connected to the rear body at the other end, an elongate body being provided within the front and rear bodies and mounted thereon by having radially extending arms extending into an annular V-shaped groove formed by chamfers in the engaging surfaces of the front and rear bodies, the elongate body carrying a slidable closure member biassed to close the nozzle orifice.

Abstract: Provided is an injection unit for the hot runner molding including a heating cylinder having passageways for fused plastic longitudinally formed therethrough and a nozzle member attached to one end of the cylinder and having an injection nozzle. Within the cylinder is fixably disposed a torpedo, which has a central blind hole formed therethrough in a manner spaced from and parallel with said plastic passageways of the cylinder. Within the central blind hole is disposed a spring assembly, which always biases a pin member abutting against the spring assembly. The pin member is provided with a valve and both are integrally operated. Where a prescribed level of plastic pressure acts on the valve, the valve is separated from the nozzle member to permit the plastic to be injected through the injection nozzle. Where the prescribed plastic pressure does not act on the valve, the valve is made to abut the nozzle member by the bias force of the spring assembly to close the injection nozzle.