With Discharge Volume Varying Means Patents (Class 222/250)
  • Patent number: 11268620
    Abstract: A channel chip having a channel for running a fluid that is opened and closed by sliding on a film a sliding member slidable on the film while contacting with the film, the channel chip comprising: a substrate including a first channel, a second channel and a partition wall formed between the first channel and the second channel; a film including a diaphragm having a substantially spherical crown shape, the film being disposed on the substrate so that the diaphragm faces the partition wall; and a positioning section for holding the sliding member in such a way that the sliding member is slidable on the film while the positioning section positions the sliding member, the positioning section being disposed on the film.
    Type: Grant
    Filed: October 1, 2020
    Date of Patent: March 8, 2022
    Assignee: ENPLAS CORPORATION
    Inventors: Koichi Ono, Nobuya Sunaga
  • Patent number: 11192774
    Abstract: A device for evacuating a container that contains a pasty liquid to avoid air inclusions or bubbles in the liquid while the container is being filled and/or to eliminate air between the liquid surface and a follower plate until the plate contacts the liquid surface during insertion of the plate into the container before removal of the liquid. The device comprises a cover assembly to close an opening of a container in a vacuum-tight manner and which has a connection device for connecting an evacuation pump. A collapse avoidance apparatus is provided to surround at least one region of the outer faces of the container walls with a seal to connect to the wall outer face in a vacuum-tight manner and form a vacuum-tight collapse avoidance chamber. A connection device is provided for connecting an evacuation pump to evacuate the chamber and apply a vacuum on the wall outer face.
    Type: Grant
    Filed: March 15, 2018
    Date of Patent: December 7, 2021
    Inventor: Udo Tartler
  • Patent number: 10913651
    Abstract: The invention relates to a container emptying device (1) for emptying at least one container (6) filled with a liquid, comprising a suction unit (2), a receiving unit (4) and a pipe unit (3) connecting the receiving unit (4) with the suction unit (2). The suction unit (2) comprises at least one suction lance (2a) adapted to be inserted and lowered into the container (6), at least one pump (2c), connecting the suction lance (2a) with the pipe unit (3), for pumping the liquid out of the container (6) and a control device for controlling a suction process. The pipe unit (3) comprises at least one flexible pipe for transporting the liquid out of the container (6).
    Type: Grant
    Filed: September 19, 2016
    Date of Patent: February 9, 2021
    Assignee: Tetra Laval Holdings & Finance S.A.
    Inventors: Thomas Eggler, Franco Acklin, Denis Steffen
  • Patent number: 10830362
    Abstract: This fluid handling device has a substrate, a film, and a sliding member. The substrate has first flow paths, second flow paths, and partition walls formed between one end of the first flow paths and one end of the second flow paths. The film includes a diaphragm, and is arranged above the substrate such that the diaphragm and the partition walls oppose one another. The sliding member has protrusions formed on the back surface thereof, and is arranged above the film with the back surface facing the film. By sliding on the film the sliding member is able switch alternately between a first state in which the protrusions are arranged so as not to oppose the partition walls, and the diaphragm is sandwiched therebetween, and a second state in which the protrusions are arranged opposing the partition walls, and the diaphragm is sandwiched therebetween.
    Type: Grant
    Filed: August 3, 2017
    Date of Patent: November 10, 2020
    Assignee: ENPLAS CORPORATION
    Inventors: Koichi Ono, Nobuya Sunaga
  • Patent number: 10577239
    Abstract: A material transfer system for storing, transferring and dispensing viscous material, such as fluids and liquids, includes a material containment vessel with an upper region incorporating a motive force and a bottom region with a material ingress and egress opening. A diconical or other shaped force transfer device is located in the material containment area. The force transfer device is an energy transducer when the material containment is filled with highly viscous materials, such as adhesives, sealants, mastics or lubricating greases. The system's performance can be improved by applying a surface treatment to the wetted surfaces of the system to change the physical properties at the fluid/vessel interface.
    Type: Grant
    Filed: January 7, 2019
    Date of Patent: March 3, 2020
    Assignee: C.H.&I. Technologies, Inc.
    Inventors: Robert D. Thibodeau, Eric A. Williams, Lawrence M. Levenstein
  • Patent number: 10570789
    Abstract: A rotary internal combustion engine with a housing having a fluid passage defined therethrough opening into a portion of its inner surface engaging each peripheral or apex seal of the rotor. An injector has an inlet for fluid communication with a pressurized lubricant source and a selectively openable and closable outlet in fluid communication with the fluid passage for delivering the pressurized lubricant to each seal through the fluid passage. A housing for a Wankel engine and a method of lubricating peripheral seals of a rotor in an internal combustion engine are also discussed.
    Type: Grant
    Filed: June 17, 2016
    Date of Patent: February 25, 2020
    Assignee: Pratt & Whitney Canada Corp.
    Inventors: Edwin Schulz, Etienne Plamondon, Jean Thomassin
  • Patent number: 10221059
    Abstract: A material transfer system for storing, transferring and dispensing viscous material, such as fluids and liquids, includes a material containment vessel with an upper region incorporating a motive force and a bottom region with a material ingress and egress opening. A diconical or other shaped force transfer device is located in the material containment area. The force transfer device is an energy transducer when the material containment is filled with highly viscous materials, such as adhesives, sealants, mastics or lubricating greases. The system's performance can be improved by applying a surface treatment to the wetted surfaces of the system to change the physical properties at the fluid/vessel interface.
    Type: Grant
    Filed: January 29, 2014
    Date of Patent: March 5, 2019
    Assignee: CH&I TECHNOLOGIES, INC.
    Inventors: Robert D. Thibodeau, Eric A. Williams, Lawrence M. Levenstein
  • Patent number: 8567209
    Abstract: A refrigerator is provided. The refrigerator includes a body defining a storage space; a door selectively shielding the storage space; a container connecting part disposed in the storage space or the door; a water supply container separably coupled to the container connecting part, the water supply container including an opening for injecting water; an ice making device for making ice using the water supplied from the water supply container; a water supply passage fluidly connecting the water supply container to the ice making device, the water supply passage extending in an inside direction of the water supply container; and a pump connected to the water supply passage to supply the water within the water supply container into the ice making device. According to the refrigerator, installation cost is reduced, and quality and reliability are improved.
    Type: Grant
    Filed: March 3, 2010
    Date of Patent: October 29, 2013
    Assignee: LG Electronics Inc.
    Inventor: Sung Kyoung Kim
  • Patent number: 8534505
    Abstract: Methods and apparatus for dispensing liquid material provide the option to dispense precise and repeatable quantities or volume of material over a wide range of viscosities. In one embodiment, a metering chamber is provided that can be filled and emptied at the same time so as to eliminate time delays between dispensing operations. The material may be under pressure and that pressure is used to fill and empty a metering chamber. In another embodiment, a control device is provided with a metering chamber wherein the control device operates to switch pressurized fluid between two passages to the metering chamber. In a more specific embodiment, the control device may be, for example, a valve, and more specifically in one embodiment a pneumatically actuated spool valve.
    Type: Grant
    Filed: August 31, 2009
    Date of Patent: September 17, 2013
    Assignee: Nordson Corporation
    Inventors: Mario Romanin, Brian Burkley, Les Varga, Chuck Ganzer, Jeff Owen
  • Patent number: 8418647
    Abstract: A dual action piston type metering device is installed between the color changer of a coating system and its atomizer, the metering cylinder of which includes two input ports with the color changer output ports connected to the atomizer. The dual action piston type metering device enables the alternating operation of the cylinder ranges (A/B-operation) with only one single metering cylinder.
    Type: Grant
    Filed: October 20, 2006
    Date of Patent: April 16, 2013
    Assignee: Dürr Systems Inc.
    Inventor: Herbert Martin
  • Publication number: 20120298696
    Abstract: A metering device and method of modular construction allows ease of set up, maintenance and process changes, without the need for changing structures and/or custom parts and without the need for special tools. The metering device monitors various operating parameters with closed loop computer feedback to enhance piston and pump control for accurate metering, to predict when routine maintenance should be performed to avoid failure, to permit automatic fine tuning of displacement during operation and to enhance production within specification tolerances while minimizing downtime. The piston cylinder assembly within the hard tooling can be readily changed to selectively have different diameter cylinders and pistons and to be readily convertible between macro and micro liquid metering. The metering device with its controls and ease of component changes allows metering systems with multiple metering devices to be easily set up with improved synchronization and accurate mixing ratios.
    Type: Application
    Filed: May 25, 2012
    Publication date: November 29, 2012
    Applicant: Failsafe Metering International Ltd.
    Inventors: Thomas Kevin Milo, Peter P. Seabase
  • Patent number: 8220660
    Abstract: A system for supplying at least two fluids in proportioned quantities may include a first and second intake passages configured to be in flow communication with sources of first and second fluids, respectively. The system may include a fluid transfer device in flow communication with the first intake passage and the second intake passage, and a pump in flow communication with the first intake passage. Operation of the pump is configured to supply a quantity of the first fluid to a first chamber of the fluid transfer device such that a quantity of the second fluid is expelled from a second chamber of the fluid transfer device. When operation of the pump is ceased, a quantity of the second fluid enters the second chamber and a quantity of the first fluid is expelled from the first chamber.
    Type: Grant
    Filed: May 14, 2008
    Date of Patent: July 17, 2012
    Inventor: Clyde M. Smith
  • Patent number: 8091469
    Abstract: A beverage machine comprising a drip tray device that can accommodate recipients of different heights. The drip tray device is formed of a collect tank and has a first drip support grid removably mounted on the tank for holding short recipients and has a second drip support for longer recipients such as a glass. The whole device is removable for ease of emptying and rinsing. In a possible mode, the first removable grid is provided with a gutter to evacuate liquid in a main collect reservoir.
    Type: Grant
    Filed: June 7, 2006
    Date of Patent: January 10, 2012
    Assignee: Nestec S.A.
    Inventors: Antoine Cahen, Michael Stieger
  • Patent number: 7798374
    Abstract: In a process for producing crosslinkable organopolysiloxane compositions, in particular organopolysiloxane compositions which can be crosslinked at room temperature, the organopolysiloxane compositions are stored in a storage unit before being packed in moisture-proof containers, the storage having a storage capacity of at least 15 minutes of production capacity of the mixture, the essentially dead-space-free storage unit continually having an internal pressure of more than 1200 hPa during filling.
    Type: Grant
    Filed: January 8, 2008
    Date of Patent: September 21, 2010
    Assignee: Wacker Chemie AG
    Inventors: Peter Schoeley, Guenther Dineiger, Stephan Schulz
  • Patent number: 7510103
    Abstract: To deliver a liquid at high speed and with high accuracy. A device for delivering a fixed quantity of liquid, comprising a pump section for metering the delivered liquid to provide a desired amount consisting of a plunger chamber formed in a cylinder block, and a plunger reciprocating in the plunger chamber, a valve section for switching between liquid flow channels for suction and delivery, a reservoir section for reserving liquid adapted to communicate with the pump section depending upon the position of the valve section, and a delivery section having a delivery port for delivering liquid, the device being characterized in that the pump section and the valve section are disposed connected to each other and that the maximum advance position of the plunger is defined by a plane where the front end surface of the plunger contacts the valve section and pump section. The valve section is removably disposed in the pump section.
    Type: Grant
    Filed: June 14, 2002
    Date of Patent: March 31, 2009
    Assignee: Musashi Engineering, Inc.
    Inventor: Kazumasa Ikushima
  • Patent number: 7225946
    Abstract: An improved microprocessor-controlled dual piston-pump viscous fluid dispensing system as for dispensing uniform sealing beads and the like (as well as other types of uniform deposits), wherein the pressure throughout the fluid path is maintained constant including during the switching alternately between filled and emptying pumps of the pair, assuring a constant dispensing rate, including during the switchover of the pumps.
    Type: Grant
    Filed: December 11, 2003
    Date of Patent: June 5, 2007
    Assignee: DTIC Dispensing Technologiesa a Division of Stainless Steel Coatings, Inc.
    Inventor: Ivan Gardos
  • Patent number: 6886720
    Abstract: A metering device that includes a housing defining a cylindrical chamber containing a reciprocating shuttle. The two opposed end parts of the chamber are interconnected by fluid flow ducts to a cylindrical valve bore. Contained with the valve is a rotary valve rod driven rotationally by a stepping motor. The valve rod has part cut away to form channels or recesses. In one rotational position of the valve rod a flow path is established from an inlet to one end of the chamber and a separate flow path is established from the other end of the chamber to an outlet. In an alternate orientation of the valve rod a flow path is formed from the inlet to the other end of the chamber and the first end of the chamber is connected to an outlet.
    Type: Grant
    Filed: August 18, 2003
    Date of Patent: May 3, 2005
    Inventor: Laurence Richard Penn
  • Patent number: 6702155
    Abstract: An apparatus and method of delivering adjustable metered doses of a composition from a squeezable container. An embodiment of the apparatus is a metered dose dispenser including a body that includes an inlet channel with a first opening, an outlet channel with a second opening, and a dosing wheel seat. The dosing wheel seat is a cavity defined by the body. The dosing wheel seat communicates with the inlet channel, via the first opening, and with the outlet channel, via the second opening. The metered dose dispenser also includes a removable, rotatable dosing wheel is situated within the dosing wheel seat when the metered dose dispenser is in use. The dosing wheel includes a dosing channel, which may be aligned with the inlet channel and the outlet channel. A plunger is movably situated in the dosing channel, the plunger does not fit through either the first or second opening.
    Type: Grant
    Filed: September 18, 2001
    Date of Patent: March 9, 2004
    Assignee: Solvay Pharmaceuticals, Inc.
    Inventor: Thomas M. Rebne
  • Patent number: 6676387
    Abstract: A metering device contains a rotor which defines elongate chamber, there being a shuttle contained within the chamber movable between two terminal end positions. Frusto-conical surfaces defined on the rotor cooperate with annular members defining corresponding seats. One passage extends from one end of the chamber to one frusto-conical surface, and another passage extends from the other end of the chamber to the other frusto-conical surface. Each annual element defines a respective inlet and outlet for fluid and a shuttle is present within the chamber. As the rotor rotates, the shuttle effects a shuttling movement thus measuring dispensed volumes of fluid. A sensor is provided to detect physical contact of the shuttle with the end of the chamber to cause the rotor to advance.
    Type: Grant
    Filed: April 16, 2002
    Date of Patent: January 13, 2004
    Inventor: Laurence Richard Penn
  • Patent number: 6589483
    Abstract: A liquid dispenser characterized by a dispensing head which is movable upward and downward as a whole and comprises a plurality of plungers supported by a plunger plate, drive means for moving the plunger plate upward and downward, a plurality of cylinders in which the plungers slidably fit, and a plurality of nozzles arranged at the lower ends of the cylinders and having configurations adapted to engage airtightly with holes for holding specific dispensing tips, the plurality of nozzles being supported by a single nozzle holder, which is built to be detachable from said dispensing head. According to the invention, only the nozzle holder that support nozzles has to be replaced with another holder conforming to dispensing tips of different dimensions. The arrangement facilitates the replacement and make the dispenser available at lower cost.
    Type: Grant
    Filed: July 21, 2000
    Date of Patent: July 8, 2003
    Assignee: Cosmotec Co., Ltd
    Inventor: Yoshio Maeda
  • Patent number: 6588929
    Abstract: A portable mixing and dispensing apparatus, especially useful for spraying, including a fluid conducting, mixing and supporting framework for the hydraulic unit in the apparatus. The framework includes spaced end plates and a conduit assembly. Each end plate has a cylinder head portion forming part of the cylinder of the hydraulic unit, an upper mounting flange, and a lower flange. The conduit assembly includes an intermediate conduit/handle and a pair of end units. The end units are nearly identical and are secured to the end plates so as to constitute unitary structures therewith, releasably connected to opposite ends of the cylinder body of the hydraulic unit and to the intermediate conduit/handle, thereby enabling easy access to the cylinder body and piston in the body. Each end unit includes an outlet conduit and an end conduit.
    Type: Grant
    Filed: September 22, 2000
    Date of Patent: July 8, 2003
    Inventor: Kelly N. Dornbush
  • Patent number: 5944221
    Abstract: In a hot and cold water distribution system wherein the hot water is delivered from a water heater to a distant hot water tap adjacent a cold water tap, a hot water recirculation pump assembly purges the hot water line of any cooled-down water in order to assure instant hot water delivery when the hot water tap is opened. The volume of water drawn from the hot water line is flushed back through the hot water line by admission of an equal amount of water that was stored within a tank. That volume of water is pumped back into the tank, and automatically replaced by hot water drawn from the water heater.
    Type: Grant
    Filed: February 2, 1998
    Date of Patent: August 31, 1999
    Inventors: Karsten Andreas Laing, Johannes Nikolaus Laing
  • Patent number: 5370112
    Abstract: Portable gas dispensing systems of the type in which pulsed doses of a respirating gas such as oxygen are supplied to a patient with breathing difficulties are provided with means to generate electricity from energy extracted from the expanding gas rather than relying solely upon batteries for power to operate the system. A pneumatic motor, which may be integral with the system dose metering means, is powered by expanding gas and drives an electrical generator to produce sufficient electricity to at least supplement that required for system operation allowing for an increase in the service time per fill or a decrease in system weight or both.
    Type: Grant
    Filed: July 1, 1993
    Date of Patent: December 6, 1994
    Assignee: DeVilbiss Health Care, Inc.
    Inventor: Warren E. Perkins
  • Patent number: 5092494
    Abstract: An apparatus for metering fluid has a casing (1) accommodating a rotor (2) having a closed interior space. The interior space of the rotor (2) is divided by partitions (3) into measuring chambers (4) each accommodating a free piston (5) dividing the measuring chamber into a metering space (6) and a control space (7) located on either side of the piston (5). There is provided a batch controller having a variable capacity chamber (18) communicating with all control spaces which are connected in parallel with one another. Each chamber (4) has a port (10) regularly communicating through a port (8) with a metered fluid supply line and with a port (9) for discharging metered fluid.
    Type: Grant
    Filed: April 10, 1990
    Date of Patent: March 3, 1992
    Assignee: Tselevoi Nauchno-Tekhnichesky Kooperativ "Stimer"
    Inventor: Leonid P. Proglyada
  • Patent number: 5059398
    Abstract: A disposable preselected-volume capillary pipet device comprises a capillary tube having an admitting emitting end for liquids and a vent end for passing air from the tube as the liquid is being drawn into the tube by capillary action, a port at the admitting-emitting end for admitting and emitting liquids to the capillary tube, a port at the vent end of the tube for passing air freely from the tube, a barrier plug for passing air and stopping the passage of liquid through the tube, with the barrier plug being positioned in the tube at a preselected distance from the admitting-emitting port to define a liquid chamber of preselected volume, and a plunger for pushing the barrier plug from the vent end to push the preselected volume of liquid out of the liquid chamber. The barrier plug may be mounted in the tube or in the head of the plunger.
    Type: Grant
    Filed: July 22, 1985
    Date of Patent: October 22, 1991
    Assignee: Drummond Scientific Company
    Inventor: James W. Kenney
  • Patent number: 4915264
    Abstract: A portion control apparatus is provided for receiving a food product and discharging the product in portions of predetermined size. This apparatus has a housing with an inlet, an outlet, a first and second chamber and a passageway connecting the inlet, outlet and chambers. The apparatus also includes a valve disposed in the passageway and movable between a first and second position. In the first position, the valve allows communication between the inlet and the first chamber and between the outlet and the second chamber. In the second position, the valve allows communication between the inlet and the second chamber and between the outlet and the first chamber. Two positions mounted in the housing for reciprocating movement and connected by a rod limit the amount of food product which each chamber receives and move the product out of each chamber and out of the apparatus through the outlet in an orderly sequence.
    Type: Grant
    Filed: February 24, 1989
    Date of Patent: April 10, 1990
    Inventor: David C. Curtis
  • Patent number: 4763814
    Abstract: A fluid feeding device in which a battery, a DC motor and an electric pump are housed within a portable case. A fluid in a fluid container mounted on and communicated with the electric pump is discharged from a fluid discharge gun in a predetermined quantity or continuously. The fluid feeding device is compact in size and light in weight so that an operator can easily carry it in a wide range, whereby the fluid feeding device can be easily used at a high place or at a narrow place. The fluid feeding device is used, for instance, for feeding grease into mechanical bearings or the like.
    Type: Grant
    Filed: April 27, 1987
    Date of Patent: August 16, 1988
    Assignees: Ishikawajima-Harima Jukogyo Kabushiki Kaisha, Ishikawajima Yuki Kabushiki Kaisha
    Inventors: Kenzo Haruyama, Kenichiro Tsuruga, Tadashi Yoshikawa
  • Patent number: 4705034
    Abstract: A device for administering oxygen and other respirating gases to a patient premeters and temporarily stores single dose quantities of respirating gas and dispenses each dose in synchronization with the patients's inspiratory cycle. A sensor produces a signal upon the onset of each inhalation and a single dose of gas is dispensed to the patient in immediate response to the sensor signal.
    Type: Grant
    Filed: October 2, 1985
    Date of Patent: November 10, 1987
    Inventor: Warren E. Perkins
  • Patent number: 4690309
    Abstract: A self-powered spraying device for dispensing a metered amount or a continuous amount of chemical. A valve is connected through conduits to a cavity in front of a piston, to a cavity in the rear of the piston, to a fluid pressure source and to a nozzle. In the open position of the valve the rear cavity is connected to the fluid pressure source, and the front cavity to the nozzle. In the closed position of the valve the front and rear cavities are connected so that a spring within the front cavity drives the piston to the rear, thereby transferring chemical from the rear cavity to the front cavity. A second valve is also provided which in an opened position permits the metered dispensing of chemical when the first valve is operated and when in a closed position permits the continuous release of chemical when the first valve is operated.
    Type: Grant
    Filed: July 3, 1986
    Date of Patent: September 1, 1987
    Assignee: The United States of America as represented by the Secretary of Agriculture
    Inventors: Michael A. Wehr, Robert L. Sajdak
  • Patent number: 4602249
    Abstract: A method and apparatus for detecting leaking valves in a volumetric fluid delivery system. The system employs a volumetric chamber divided into two compartments by a moveable membrane, with each compartment having a valved inlet and a valved outlet. In the system, fluid is delivered in discrete increments by alternately opening an inlet and an outlet on opposite sides of the membrane. Between such delivery periods, all valves are closed, and then only a single valve is opened. The membrane is monitored to detect movement while the single valve is opened, indicating a closure failure in one of the supposedly closed valves.
    Type: Grant
    Filed: May 21, 1984
    Date of Patent: July 22, 1986
    Assignee: Quest Medical, Inc.
    Inventor: Martyn S. Abbott
  • Patent number: 4566491
    Abstract: Valve 11 includes a slide sliding in a first chamber 26 with the possibil of reaching two stable end positions opposite each other. In the first position the slide 21 allows intercommunication between a conduit 6 for supply of the product from a supply source and conduit 12 communicating with the upper part of chamber 10 of a double acting piston 9, as well as the intercommunication of the other part of chamber 10 with a conduit 15 connected to a delivery apparatus; in the second position the slide allows the reversal of such connections. To avoid the infiltration and mixing of the fluid under pressure used for the control of valve 11 in the conduits in which the product circulates, said slide 21 is equipped with a projection 35 which extends beyond one of the ends of the chamber 26 and is connected to a small pneumatically controlled piston 36, sliding in a second chamber 37, separate from the first.
    Type: Grant
    Filed: January 18, 1984
    Date of Patent: January 28, 1986
    Assignee: Azionaria Costruzioni Macchine Automatiche - A.C.M.A. - S.p.A.
    Inventors: Franco Aiuola, Paolo Nipoti
  • Patent number: 4518102
    Abstract: A metering device wherein a cylinder is provided with opposite end closures, a piston is shiftable in the cylinder between the end closures, a conduit extends centrally within the cylinder into a valve plug angularly shiftable within the cylinder and located adjacent to one end closure, the valve plug having angularly spaced passageways communicating respectively with opposite sides of the piston upon angular valve shifting, and a gasket extending in sealing relation about the plug and on opposite sides of the passageways to seal the latter from each other.
    Type: Grant
    Filed: February 17, 1983
    Date of Patent: May 21, 1985
    Inventor: Dale Tanner
  • Patent number: 4386716
    Abstract: The invention is an improved liquid measuring device which can be used as a proportioner, dispenser or flow meter for a single fluid or for an unlimited number of fluids. The device embodies a free-floating piston sealed within a cylinder capped at both ends, a high-resolution detector system, either optical or electrical, to accurately determine the piston location within the cylinder, and a microprocessor which converts the lateral movement of the piston within the cylinder into volume measurements of the fluid in the cylinder.
    Type: Grant
    Filed: February 3, 1981
    Date of Patent: June 7, 1983
    Assignee: Becton Dickinson and Company
    Inventor: Robert T. Buck
  • Patent number: 4369805
    Abstract: A liquid metering injector assembly for injecting metered quantities of a first liquid into respective metered quantities of a second liquid comprising a metering cylinder, metering ports formed at either end of the metering cylinder; a metering piston displaceable in the metering cylinder; a valve unit having a valve inlet for coupling to a pressurized source of the first liquid; means for coupling the valve to a hydraulic pulse source; a valve outlet for coupling to a source of the second liquid; a pair of communication valve ports of said valve unit respectively communicating with the metering ports and selectively communicatable with the valve inlet and outlet and a displaceable spool valve of the valve unit responsive to the hydraulic pulses so as to be displaceable between two positions in which the respective communication of the valve unit communicating ports with the valve unit inlet and outlet are successively reversed.
    Type: Grant
    Filed: January 12, 1981
    Date of Patent: January 25, 1983
    Assignee: Amiad Mutzarei Yiul
    Inventor: Chanany Tavor
  • Patent number: 4340159
    Abstract: Apportioning control apparatus used principally for metering and dispensing foodstuff, said apparatus including an apportioner housing having an internal bore containing a free-floating piston, and an inlet and outlet port located adjacent both ends of the housing and opening into the bore. Working fluid is contained within the bore on both sides of the piston. Intake and discharge of the working fluid from the bore is controlled by a plurality of switch activated valves, permitting simultaneous intake and discharge. An adjustable piston stop permits precision control of the volume of working fluid flowing to and from the apparatus. The apparatus may include a holding tank for the working fluid, a pump, and a foodstuff dispenser operable to dispense foodstuff in a volume equal to fluid intake from the apportioner.
    Type: Grant
    Filed: July 28, 1980
    Date of Patent: July 20, 1982
    Inventor: Arthur E. Garrett
  • Patent number: 4279360
    Abstract: A two-component molding system according to this invention has a pair of supplies each containing a quantity of a respective fluid synthetic-resin component capable of reacting and hardening with the other component. Respective conduits having upstream ends connected via pumps to the respective supplies and downstream ends connected via metering devices to a mixing chamber extend from these supplies. Molds are connected to the mixing chamber. A controller connected to the pumps and to the metering devices determines the pumping volume/time rates and compares them with the respective downstream actual volume/time rate at the downstream ends of the conduits. In the event that the actual rates are not substantially identical to the pumping rates, the controller sounds an alarm and shuts down the system.
    Type: Grant
    Filed: February 21, 1979
    Date of Patent: July 21, 1981
    Assignee: Wilhelm Hedrich Vakuumanlagen GmbH & Co. K.G.
    Inventor: Erhard Hauser
  • Patent number: 4213544
    Abstract: A device for dispensing a measured volume of liquid such as hot water for a coffee making machine in which the liquid is delivered to and dispensed from a cylinder having a double-acting piston the stroke of which is limited and controlled by an external microswitch which is remotely operated by the piston without physical contact, e.g., magnetically, at a predetermined point in its stroke.
    Type: Grant
    Filed: December 26, 1978
    Date of Patent: July 22, 1980
    Inventor: Alberto S. Pandolfi
  • Patent number: 4162750
    Abstract: An apparatus for automatically dispensing a measured volume of liquid has a cylinder and a piston. The liquid is fed to one end of the cylinder and displaces the piston which expels from the other end of the cylinder a quantity of liquid proportional to the piston stroke. At the end of the stroke, the piston abuts and closes a switch which actuates an electric motor driving a four-way rotary valve to reverse the liquid flow direction in the cylinder, whereby the piston moves in the opposite direction to discharge a measured amount of the liquid which was previously used to push the piston. The piston, at the end of its second stroke, again strikes and causes the closing of a second electric switch which produces rotation of the four-way valve to again reverse the liquid flow to its original direction.
    Type: Grant
    Filed: September 19, 1977
    Date of Patent: July 31, 1979
    Inventors: Normand Demers, Claude Martin
  • Patent number: 4044924
    Abstract: An adjustable progressive distributor valve for the intermittent metered distribution of lubricant to a plurality of branch lines by means of several free valve plungers reciprocating inside the main bores of several adjoining valve segments, the effective volume of each metering chamber being adjustable by means of a metering plunger and an adjustable drag connection between the latter and the valve plunger, so that the two plungers act as differential pistons over an adjustable length portion of the fixed valve plunger stroke.
    Type: Grant
    Filed: July 28, 1975
    Date of Patent: August 30, 1977
    Assignee: De Limon Fluhme & Co.
    Inventor: Horst Saretzky