Abstract: A collapsible, deformable container and dispensing apparatus is disclosed herein. The deformable container includes an end wall section; a first annular wall section connected to the end wall section; a curved wall section connected to the first annular wall section; and a second annular wall section connected to the first annular wall section via the curved wall section, the second annular wall circumscribing a central void. Upon extrusion of a dispensable product from the deformable container by a force exerted upon the end wall section, the curved wall section is configured to deform into the central void circumscribed by the second annular wall section, and the first annular wall section is configured to deform into and invert within the central void circumscribed by the second annular wall section. The dispensing apparatus includes a container removal component for removing the deformable container after a dispensable product has been extracted therefrom.

Abstract: An inner plug mounted to the neck of the flexible container has a cylindrical hollow portion that contains a valve element, a valve seat disposed below the valve element, a permanent magnet disposed below the valve seat that attracts the valve element to the valve seat, and a discharge outlet in the top of the inner plug to allow discharge of fluid contents of the container via a flow path extending from the discharge outlet to the container body via a void formed between the valve element and the valve seat. The valve element is movable between a closed valve state, in which the valve element contacts the valve seat, and the bottom of the discharge outlet. An open valve state is achieved once pressure inside the container overcomes the magnetic attraction of the valve element to the valve seat and forces the valve element away from the valve seat.

Abstract: An annular protruding portion (17) is provided around an inner plug (13) at a radial interval on an annular horizontal wall portion (20) of a cap body 4. Between an annular flange portion (43a) of the inner plug (13) and the annular protruding portion (17), an annular accumulating groove portion (33) is provided. Particularly in the case of a liquid content, the liquid content may be scattered from within a cylindrical guide portion (42) when a lid member (5) is placed after use. The liquid content, however, is blocked by the annular protruding portion (17) and prevented from flowing further outward, while interfering with a top surface portion (51) and a cylindrical scattering suppression portion (55) of the lid member (5). Thus, downward flow of the liquid content along the outer wall surface of the annular horizontal wall portion (20) of a main cap member (11) can be suppressed.

Abstract: A check valve of one embodiment includes a spout member which has a flow path inside, an urging member supported by an inner end portion of the spout member, a valve body connected to the urging member, and a cylindrical member having a flow path inside, and is provided with a valve seat portion on an inner circumferential face, the spout member is fixedly attached to the cylindrical member so that the valve body and the urging member are inserted into the cylindrical member and the valve body is urged to the valve seat portion by the urging member, and the flow path and the flow path communicate with each other to configure an outflow path through which the content in the vessel flows out.

Abstract: This invention relates to containers of the kind having an outlet through which product is to be dispensed, e.g. food product. There is provided a container for product to be dispensed. The container has an upper part intended to move or deform in order to reduce the volume within the container. The container has an outlet intended to open during movement or deformation of said upper part. The outlet comprises a plurality of movable parts. The outlet further comprises a plurality of fixed parts located between said movable parts. The movable and fixed parts are arranged for shaping product as it is dispensed from the container through the outlet. A method of dispensing and a vending machine for dispensing portions of ice cream or other frozen product from the container are also provided.

Abstract: Provided is a spouted bag body capable of having the same function as that of a check valve and allowing contents to easily come out by tilting a spout downward without applying excessive pressure to a bag body. A spouted bag body includes: a spout having a body portion formed in a cylindrical shape, and a valve portion disposed inside a cylindrical hole of the body portion; and a bag body attached to the body portion to seal an opening of the cylindrical hole on one side, in which the body portion is provided with a narrowed portion which protrudes from an inner surface of the cylindrical hole over an entire circumference thereof, and the valve portion includes a support portion attached to the body portion, and a movable portion which is formed of a material having elasticity, is connected to the support portion, and covers an opening of the narrowed portion on the other side by coming into contact with an edge portion of the opening of the narrowed portion on the other side.

Abstract: In a liquid distributor, a valve seat is hollow axially with a connection part in the lower end. The valve bonnet can axially move relative to the valve seat, and has a liquid outlet and a cylinder housing part. The valve plug is in a fluid outlet chamber, comprising a valve plug main body, a plug and valve plate part. The valve plug main body is hollow axially and the bottom with the inner wall of the central passage seals. The plug is molded in the head of the aforementioned valve plug main body and a transversal outlet is formed between the plug and the valve plug main body. The valve plate part radially extends and is molded in the upper end of the valve plug main body; the elastic piece is arranged in the fluid outlet chamber. The invention further discloses a container provided with the liquid distributor.

Abstract: A method of reducing spillage and residual liquid when pouring liquid includes temporarily deforming a liquid-carrying resilient container to press a buoyant member into a position sealing a fluid flow passage of the container, which is then inverted and the force is released to permit the member to float away from the passage such that liquid freely passes therethrough. When the fluid level is no longer sufficient to float the member away from the passage, an additional step prevents the ball from becoming or remaining seated in the sealing position so that residual liquid left in the container can be drained through the passage. Novel containers feature a ball-shaped member of larger size relative to the passage to ease unseating of the member therefrom for draining of residual liquid, and novel two-piece container constructions accommodate insertion of such larger balls prior to final assembly of the container.

Abstract: The invention relates to an actuator for a dispenser device for spraying contents of a receptacle that is pressurized or of a receptacle that has a pump, the actuator comprising a channel connectable to a receptacle outlet on one side of the actuator for receiving the pressurized contents of the receptacle, said channel having an orifice for spraying the contents on another side of the actuator, wherein an inlet connects the channel with a volume chamber, wherein the orifice has a valve for opening and closing the orifice, the valve biased by biasing means in the closed position, wherein the inlet has inlet reduction means for reducing the size of the inlet to the volume chamber. The invention is characterized in that the inlet reduction means comprises a flexible element.

Abstract: An anti-leak device for a tube container is disclosed, to have a predetermined amount of contents in the tube container be continuously extruded and then prevent more extrusion, and to prevent infiltration of external air. The anti-leak device includes a main body having a head with a tube outlets and a connection groove, and a leakage prevention unit having an opening and closing part, an insertion part and a fixed part. The opening and closing part is inserted in an inlet path of the insertion part. The insertion part is inserted in the fixed part having a discharge hole and engaged with the connection groove, thereby forming a movement space for the opening and closing part to reciprocate between the tube outlet and the insertion part. The opening and closing part directly opens and closes the tube outlet not to allow external air into the main body.

Abstract: Liquid dispenser for dispensing a carbonated liquid from a container, the liquid dispenser including a compartment, a container sealing region, a compartment sealing region, and a valve, the compartment extending upwardly from a neck portion of the container, the neck portion and the compartment defining an opening to the atmosphere between the compartment and the neck portion, the container sealing region being located between the neck portion and the opening, the compartment sealing region being located between the compartment and the opening, the valve being movable within the compartment, from a closed position pressed toward the neck portion, to an open position away from the neck portion, the valve including a first surface facing the compartment, a second surface facing the opening, a first valve sealing region, a second valve sealing region, and a channel extending from the neck portion to the compartment, the first valve sealing region matching the container sealing region, for preventing passage of

Abstract: A spout assembly for a packaging bag for improving the prevention of oxidation to an inner content and discharging such content at a desired amount. The spout assembly mounted to the bag body includes a spool to move along the axial direction of the spout assembly and an urging member having an outer peripheral surface fixed to the inner peripheral surface of the spout assembly and adapted to urge the spool toward the bag body side. A check valve allows the inner content to flow only from the bag body side toward the mouth portion side. The urging member has a seat surface for the spool and the urging member presses the spool against the seat surface to shut off the flow of the inner content, and when an inner pressure of the bag body or a suction force of the mouth reaches a predetermined value, the spool separates from the seat surface.

Abstract: A method of reducing spillage and residual liquid when pouring liquid includes temporarily deforming a liquid-carrying resilient container to press a buoyant member into a position sealing a fluid flow passage of the container, which is then inverted and the force is released to permit the member to float away from the passage such that liquid freely passes therethrough. When the fluid level is no longer sufficient to float the member away from the passage, an additional step prevents the ball from becoming or remaining seated in the sealing position so that residual liquid left in the container can be drained through the passage. Novel containers feature a ball-shaped member of larger size relative to the passage to ease unseating of the member therefrom for draining of residual liquid, and novel two-piece container constructions accommodate insertion of such larger balls prior to final assembly of the container.

Abstract: By means of a fluid material discharge device of simple construction, a technique for fluid material discharge is provided which has few or no inadequate discharge, high productivity, and which enables easy modification and adjustment of the amount of fluid material discharge. The fluid material discharge device comprises a nozzle for discharge of fluid material and a filament-shape member inserted into the nozzle for use. The filament-shape member has a tip portion AA, which is exposed outside of the nozzle when no pressure is exerted on the tip of the filament-shape member, a portion BB which can be inserted into the nozzle, and a portion CC, on the side of the filament-shape member opposite the tip portion AA, and being bent from the portion BB. The spring structure of the filament-shape member is utilized to discharge fluid material.

Abstract: Applicator tip for applying liquid product, comprising an elastically deformable outer applicator element provided with a dispensing orifice able to be sealed closed by a shut-off element, and a rigid inner body the upper part of which bears the shut-off element as a projection and is covered, around the shut-off element, with the outer applicator element.

Abstract: A container is arranged to be particlularly suite to food products which are discharged from the container by extrusion through an outlet (14). The outlet shapes the product as it is extruded and is made up of moveable portions (25) whose extent of movement is limited by limiting means (28, 29) so that the portions (25) still lie across the path of product extruding through the opening (14).

Abstract: There is disclosed a tamper-evident device for a closure assembly adapted to be applied to a mouth of a container, for example, a neck of a bottle. There has been identified a need for an improved tamper-evident device which does not have any parts which are removed upon initial opening and which are liable to be reattached by counterfeits or the like. Accordingly the present invention provides a tamper-evident device comprising a sleeve member which comprises a first portion associated with a second portion by means of a frangible portion therebetween, and wherein said first portion is adapted to be applied to a mouth and neck portion of a container, and said second portion is associated with a container closure member, and wherein an initial container opening operation causes said frangible portion to fracture or break such that when the container is reclosed said first and second portions are located in a spaced apart relationship to one another.

Abstract: A valve mechanism for a tube-type fluid container includes a valve seat portion having an upper opening portion and a lower opening portion; and a valve portion disposed co-axially with the upper opening portion. The valve portion includes a supporting portion attached at or below the lower opening portion, a closing portion for closing the upper opening portion, and a connecting portion connecting the closing portion and the supporting portion. At least either the closing portion or the connecting portion is resilient and capable of being deformed to open the upper opening portion when a fluid stored inside the container is pressed.

Abstract: A tube-type container includes a container main body, a lid material to be attached in the top of the container main body, a valve body 20 comprising an opening/closing mechanism and a tube-shaped material 30. On the top periphery of the tube-shaped material 30, an engaging groove 32 that can be engaged with the container main body is formed. On the inner circumference of the tube-shaped material 30, the first tapered portion 31 is formed, and in the under surface 34 in the tube-shaped material 30, an opening portion 33 is formed. In the valve body 20, the second tapered portion 21 is formed. Additionally, in the lower end portion of the valve body 20, a regulating portion 22 is formed.

Abstract: An in-bore non-refilling device for a bottle of fine spirits has a valve member 16 in the form of a regular dumbbell, with conical ends 62 arranged back-to-back and joined by a central shaft 63 at their apices. The housing 12 of the device has its bottom end closed by an annular bucket 14 which is snap-engaged into position, and each of the conical ends of the valve member has a toroidal free edge which is capable of making sealing engagement with a complementary surface 22 formed around the bucket aperture.

Abstract: A dispensing cap for a product container, preferably a cosmetic product container, is provided. The cap includes a movable member comprising a valving portion capable of selectively opening and closing a product-dispensing orifice depending upon pressure within the container. The cap also includes an elastically deformable mounting element coupled to the movable member to retain the movable member on the cap, and the mounting element comprises a sealing member configured to selectively open and close at least one air intake passage, the air intake passage being separate from the product-dispensing orifice.

Abstract: The invention teaches a kit-like system and apparatus for dispensing a multiple component reactive material from two cartridges each having an exteriorly threaded semi-cylindrical outlet nozzle, where the respective components need not be mixed together immediately, but only in close proximity of the intended use of the material. Thus, the cartridge nozzles will be spaced from one another, and at least one will be paired up with a dummy nozzle having a like exteriorly threaded semi-cylindrical nozzle, but with no outlet. Special universal fittings are provided in the kit that fit over the paired cartridge and dummy nozzles, and over a separate conventional mixer, and further that allow for hoses to be connected thereto, to define separate component flow paths from the separate cartridges to the remotely located mixer and then to the intended discharge location.

Abstract: A material handling fitting consisting of a tube having inlet and outlet ends, with the tube being stepped between its ends and having a plurality of respectively opposed outer and inner land areas of progressively smaller to larger diameters from one of its ends to the other. The different respective outer and inner land areas are sized to correspond to and telescopically cooperate selectively with inner and outer land areas respectively of substantially conventional material dispensing members, over a wide range of sizes and types. Upon two of such members being telescoped simultaneously with the opposite fitting ends, separable leakproof joints can be established for defining a continuous passageway between the dispensing members via the fitting, suited for conveying therethrough material under pressure.

Abstract: A novel fluid container system comprises a container having a port at an upper end through which port fluid is permitted to pass for emptying the container. A restricter is provided within the container for momentarily restricting fluid flow out of the port when the container is inverted, the restricter having a construction such that a restricted fluid flow is permitted through the port for a period of time when the container is inverted, after which period of time a substantially less restricted fluid flow is permitted through the port. A retainer retains the restricter in the vicinity of the port. The retainer is disposed on an inner surface of the upper end of the container and extends inwardly from the inner surface. The retainer can include a substantially horizontal arcuate member or a circular member.

Abstract: The disclosed port device has a tube with a base that can be permanently bonded to a surface with its outlet throughbore aligned with a crack therein, for funneling the material into the crack; and the port device tube can have a low silhouette of possibly 3/8" high overall, suited for leaving the device in place after crack filling had been completed. The material under pressure can be communicated to the port device via a flexible hose connected between special fittings, that respectively can be seated across leakproof joints established with the material dispensing system and with the port device. This means that the material dispensing system can be well spaced physically from the crack itself, by almost the hose length, and that the operator need not hold the material dispensing system relative to the crack.

Abstract: A tapered valve seat and mating valve member are in fluid communication with a squeezable container interior. Fluid in the container under pressure axially displaces the valve from its seat, flows through the interface between the valve and seat and is discharged through conduits in the valve member and stem. A gradually curved undulating valve chamber ceiling wall engages a complementary curved shoulder on the valve member for limiting the axial displacement of the valve member between a locked state and a plurality of settable maximum valve interface clearances valve open states according to the relative annular positions of the shoulder to the chamber wall. The interface clearance and thus the valve maximum open position is set according to fluid viscosity to retain fluid therein to preclude ambient air passing to the container interior in response to a negative pressure in the container. This creates forces which close the valve in each relative position.

Abstract: A drip resistant nozzle for a dispenser is described. The drip resistant nozzle includes a flexible, resilient member that moves between several positions during actuation of the dispenser.

Abstract: An annular tapered valve seat and mating valve on a valve member are secured in fluid communication with a container interior. Fluid in the container under pressure axially displaces the valve from its seat, flows through the interface between the valve and seat and is discharged through a transverse conduit in the valve member and an axial central conduit in the valve member stem which is sealingly engaged with a bore in the housing with annular ribs for guiding the stem. A tapered valve chamber wall engages a shoulder on the valve member for limiting the axial displacement of the valve member to retain fluid in the interface in the absence of container pressure above ambient. The fluid in the interface precludes ambient air passing to the container interior so that a negative pressure in the container results in ambient air pressure forcing the valve to its closed position.

Abstract: The disclosed port device has a tubular inlet end stepped with progressively smaller land areas sized to establish a leakproof separable joint with outer land areas of conventional material mixing/dispensing tubes. Separate radial base blades hinged from the port device near its outlet end fit either unfolded flush against a flat surface aligned over a crack therein or back-folded into the crack itself, for alternative uses of the port device. The port device beyond the base is beveled across end edges, for cooperating with corner surfaces and guiding material discharge under pressure into an underlying corner crack, where two partly folded base blades can then fit flush against the corner surfaces. An expandable sleeve fitted into the structure crack can be deformed radially upon tightening a nut for retaining the port device in the structure even when dispensing material under high pressures into the crack, as by an accessory fitting mechanically locked to the port device.

Abstract: A dispensing unit for a threaded neck bottle including a dispensing nipple, valve assembly, and a connector. The dispensing nipple is squeezable and mostly cylindrical in shape with one end converging. The bottom of the converging end is open so that the fluid contained within the dispensing nipple escapes when the nipple is squeezed. The valve arrangement is disposed inside the convergent end of the dispensing nipple and includes a rod connecting a ball valve at its bottom and a truncated cone shaped member at its other end. The connector secures the neck of the storage bottle to the dispensing nipple and includes outer and inner concentric cylinders secured to and made an integral part of an annular ring having an outside diameter and an inside diameter about the same diameter as the first and second concentric cylinders. The annular ring seals one end of the space between the cylinders.

Abstract: The surface port device has a tube with a throughbore between its inlet and outlet ends, and an enlarged flat base at the outlet end, suited to be bonded by adhesive securely to a structure surface with the tube bore aligned over a surface crack. The inlet tube end is stepped, having several adjacent generally cylindrical axially extended land areas of progressively smaller diameters I.D. in moving downstream toward the outlet end. The land areas are sized both in diameter and axial length to correspond to certain more common generally cylindrical land areas of conventional available material mixing/dispensing tubes proximate the outlet nozzles thereof. This allows the establishment of a mechanically sound leakproof separable joint between the material dispensing tube end the surface port device. A captive check ball in the tube bore automatically can be shifted between opening the port bore or closing it to preclude material backflow.

Abstract: Apparatus for dispensing a mixture of two components comprises a dispenser device formed with a first passageway connected to a source of a Component A material, and a second passageway connected to a source of a Component B material, both of which are connected to a static mixer where the components are combined to form a mixture. The dispenser includes structure for purging the mixture of Component A and B from areas of the dispenser which come into contact therewith, and a check valve operative to create a suction within the dispenser and static mixer to prevent leakage of the mixture from the static mixer when flow of the components is interrupted.

Abstract: A method of reducing spillage when pouring liquid out of a container which includes the following steps. Firstly, place a free floating buoyant member into a resilient deformable container adapted for containing liquid. The liquid must be of greater density than the density of the member such that the member floats upon the surface of the liquid. The container has a fluid flow passage narrower than the dimensions of the member such that the member is prevented from exiting through the fluid flow passage. Secondly, exert a force to temporarily deform the container thereby reducing the volume of the inner cavity and causing the liquid in the container to press the member into a position sealing the fluid flow passage. Thirdly, invert the container thereby placing the container into a pouring position.

Abstract: A gaged dispensing apparatus for dispensing a predetermined amount of material to the user. The apparatus comprises a collapsible container and a spherically shaped, resilient metering device disposed within the container. The container is retained within a receptacle which allows the user to apply direct pressure to the collapsible container.

Abstract: A dispenser for dispensing sterile solution which includes a valve to control the dispensing of the sterile solution from a container. The valve comprises a solution outlet and an air inlet opening having an associated filter membrane to filter the air passing into the container. When dispensing the solution, force applied to the container causes the solution outlet to open and prevents access of the solution to the air inlet opening. When the force is relieved, a partial vacuum is formed in the container which causes the solution outlet to close. Air is then drawn into the container via the air inlet opening and through the filter membrane.

Abstract: A nozzle assembly for dispensing measured volumes of a liquid has a valve for dividing an inflowing volume of liquid into a plurality of equal outflowing aliquots through the use of a radial spreading zone in the valve. The valve is connected to a plurality of nozzles which dispense the liquid into containers. The nozzles each have a sump and a plurality of outlet nipples to eliminate dripping of liquid from the nozzle during valve drawback.

Abstract: Disclosed herein is a one piece spill proof plug which allows a container to be inverted prior to dispensing a fluid to a receiving receptacle. The plug has a plug member, stem and V-shaped retainer members which allow the plug member to snugly fit into the neck portion of a container and allows the biased retainer members to expand within the container. The one piece spill proof plug has many applications, particularly for dispensing motor oil to an engine by way of a valve cover opening.

Abstract: A propellantless foam dispenser comprising a container which has a flexible outer wall and contains a foamable liquid and air. The container has an outlet opening which is disposed at the top of the container and has a foam discharge nozzle associated with it. A foam generator is associated with the outlet opening and comprises a body that includes a bottom member and a shell member and contains a porous element which covers the air inlet opening of the foam discharge nozzle. The bottom member of the foam generator body is formed with liquid passage openings and with an air passage opening. A tubular air line is provided which communicates with the air passage opening and extends into the interior of the container close to the base of the container. A mixing chamber is provided between the bottom member of the body of the foam generator and the porous element which comprises a sieve disc.

Abstract: The discharge device comprises a member having a plurality of liquid flow openings, an eductor tube, a liquid flow path from the eductor tube to the member with the plurality of liquid flow openings and a valve positioned in the liquid flow path. The valve is movable between a blocking position and a discharge position. The valve is operative in the blocking position to block the liquid flow path and is operative in the discharge position to unblock the liquid flow path. Further, a cap member having a discharge orifice which is larger than any of the plurality of openings is mounted over the member having the plurality of openings. The device produces a fine spray mist. However, the device can also be used to produce a foam by placing a screen over the orifice.

Abstract: A deformable spray dispenser comprises a valve unit which is capable of axial displacement within the container with respect to the container cover between a spray-discharge position and an air-suction position. The valve unit supports a member for shutting-off the eductor tube in its air-suction position. The valve unit is provided with a valve cap having an external face which is applied against an internal face of the container cover in the spray-discharge position and cooperates with the internal face so as to form a nozzle for discharging liquid through the container-cover orifice in an atomized spray pattern.

Abstract: A tube container for receiving semifluid material includes a tubular body formed of an elastic synthetic resin, a neck portion formed of a synthetic resin and integrally mounted on the body at a shoulder, and a valve member fitted in the neck portion. The valve member includes a side wall, an upper end plate, a valve sheet and a stopper. The side wall provides a tight fit with an inner surface of the neck portion and the end plate is formed with a passage for flow of the material to an outlet in the neck portion. Placed on the end plate is the valve sheet which is movable between the end plate and the stopper to open or close the passage in accordance with pressure applied to the body. Upper portion of the stopper is located adjacent to the outlet so as to minimize a space therebetween.

Abstract: An apparatus for automatically weighing out articles of a type having an apparent specific gravity which is not constant includes means for weighing out the articles into a batch having a target weight, means for filling a constant volume with the weighed out batch of articles, a pressure sensor for sensing pressure that develops when the articles have been introduced into the constant volume, and means responsive to the pressure sensed by the pressure sensor for automatically adjusting the target weight value within preset allowable limits so that the weighed out batch of articles will have a fixed volume. The weighed out batch of articles introduced by the filling means are shaped into the fixed volume. The weight of the batch and the volume thereof within a package are both within preset allowable limits.

Abstract: An improved method and apparatus for perforating and applying grease through a resilient seal using a solid or hollow needle, said solid needle puncturing the seal with a sufficiently small perforation that, as the device is maintained in contact with the seal and pressurized lubricant is applied, the perforation is hydraulically opened by the grease, and wherein, upon removal of the device, the perforation will self-seal due to the resilient character of the seal material.

Abstract: The device is based on a metering chamber which is designed to be screwed onto a tube and which has inlet and outlet openings for the product. The product is dispensed by a plunger displaceable in the metering chamber. An axially displaceable plate valve is arranged between the plunger and the bottom of the metering chamber. The valve plate is provided with holes for the passage of product. The plate valve functions such that the valve plate closes the outlet opening during filling of the metering chamber and the inlet openings during emptying of the metering chamber. The dispenser may be screwed onto standard commercial tube packs for the application of salves or pastes.

Abstract: A water gun having a barrel, a water inlet, a pistol grip and and a main body portion with an upper piston chamber in the main body portion communicating with the inlet and a lower valve chamber separated from the upper piston chamber. A piston is slidably mounted in the upper chamber and has an upper land engaging the inner wall of the upper chamber in non-sealing relationship and a lower land engaging the inner wall of the upper chamber in sealing relationship. A valve is slidably mounted in the lower chamber and includes a pair of spaced lands in sealing engagement with the inner wall of said lower chamber normally disposed on both sides of a port in a wall separating the upper chamber from the lower chamber when the gun is in inoperative position. A port also extends through the lower land and communicates the port in the wall with the area in the upper chamber above the lower land. A port in the body portion communicates the barrel with the lower chamber.

Abstract: A housing is threaded to the container and includes a valve stem having a flexible valve disc member. In the housing are upper and lower adjacent valve seats which mate with the disc member to form closed valves therewith. When in contact with the upper seat the valve can be opened and closed by the pressure differential between the container and the ambient. When manually placed in contact with the lower seat the disc member snaps in place by flexing over the upper seat into a locked closed valve state with the lower seat and does not open in response to pressure differentials between the container and the ambient.

Abstract: A housing containing annular tapered valve seat and mating valve secure the valve in fluid communication with the container interior. Fluid in the container under pressure displaces the valve from its seat, flows through the interface between the valve and seat and is discharged to the ambient through a fluid passage coupled to the interface. A shoulder in the housing engages a shoulder on the valve for limiting the displacement of the valve to a value sufficiently small to retain fluid in the interface in the absence of pressure above ambient in the container. The fluid in the interface acts effectively as a seal to ambient air so that a negative pressure in the container results in ambient air pressure forcing the valve to its closed position.

Abstract: A nozzle shut-off valve for injection molding machine for plastic material, especially thermoplastic material, has two pneumatic cylinder-and-plunger units. One such unit has its plunger mounted to reciprocate so as to block the passageway of the plastics through the nozzle. The first such plunger and cylinder unit is provided with a pilot passage in the valve nozzle so that the pressure of molten plastic can be used to open it. The second such unit is much smaller diameter and has its plunger mounted to block the pilot passage so that the second unit in effect becomes a pilot valve and controls the application of fluid pressure through the pilot passage to the first unit plunger or blocking plunger.

Abstract: The invention disclosed herein is an injection molding machine unit having a barrel, with an injection nozzle on one end of the barrel and a screw ram movable in the barrel, a valve member with axially extending grooves in the periphery thereof, supported on the ram shaft, a ring on the ram shaft adjacent the valve. The ring has axially extending grooves in its outer periphery and the ring moves out of alignment with the grooves in the valve. The grooves of the ring form a fluid flow passage for plastic material to the injection nozzle when the screw is rotated and the ram is retracted. The valve closes when the ram moves forward.

Abstract: An injection molding apparatus having a non-return valve assembly mounted on the front end of an extruder screw within a heated barrel for accummulating a charge of thermoplastic material in the forepart of the barrel by the retrograde and rotary movement of the screw when the valve is in open position, and by ejecting the charge through a nozzle mounted at the front of the barrel by the reverse reciprocating movement of the feedscrew, which simultaneously forces the valve to close and prevents escape of the material backward into the barrel along the screw. The valve is formed of two components, one of which is shaped with a convexly contoured annular protuberance which is alternately spaced from the other one, and in close abutment therewith, in the alternate movements of the feedscrew, with only screws or bolts connecting the two, to permit freedom of movement therebetween.