Combined Patents (Class 137/560)
  • Patent number: 5201493
    Abstract: Disclosed is relating to a electrically insulated ball valve device to be interposed between a couple of metallic pipes for supplying fluid so as to electrically insulating the couple of metallic pipes each other. The device includes a valve body having threaded portion formed at its both end, a valve cap having threaded portions one of which is coupled to one of the threads of the valve body and an insulating layer formed onto any one of said threads thereby electrically insulating the couple of metallic pipes each other without a separate insulating device.
    Type: Grant
    Filed: June 4, 1992
    Date of Patent: April 13, 1993
    Inventor: Young M. Kim
  • Patent number: 5191919
    Abstract: A closed transfer apparatus for transferring liquid from a container to a dilution tank in measured volume includes an actuator moveable to a first position that energizes an electric pump to pump liquid from the container into a transfer tank and moveable to a second position which energizes the pump to pump liquid from the transfer tank to the dilution tank; the actuator being biased to a center position in which the electric pump is de-energized and the tanks and the container are all isolated.
    Type: Grant
    Filed: October 18, 1991
    Date of Patent: March 9, 1993
    Assignee: FMC Corporation
    Inventors: Peter S. Barrows, Clyde D. Watson
  • Patent number: 5184648
    Abstract: A solenoid operated valve comprising a valve body having at least one solenoid unit mounted on an end thereof. Each solenoid unit contains a solenoid electrically operable to control valve means within the valve body. The valve may further comprise a manifold segment in fluid interface with the valve means. An automatic wireway device is provided comprising a modular wireway segment typically attached to the manifold segment. The wireway device automatically connects each solenoid to a selected electrical actuation channel. This connection is made by indexing plungers located within bores in the wireway segment. The plungers are movable upon engagement with similar plungers such that a contact means on the plunger is received into a radial detent having therein a channel contact. The channel contacts are each electrically conntected to one of the electrical channels. The contact means on the plunger is electrically connected to the soleoid.
    Type: Grant
    Filed: April 27, 1992
    Date of Patent: February 9, 1993
    Assignee: The Rexroth Corporation
    Inventors: Thomas R. Walter, Roger T. Cox
  • Patent number: 5156180
    Abstract: A connector with a safety shut-off feature for connecting a gas appliance to a source of gas. The connector comprises a tubular line, a first coupling adjacent the inlet end of the line for releasably coupling the line to the source of gas, a second coupling adjacent the outlet end of the line for releaseably coupling the line to the appliance, and a valve associated with the line movable between an open position for permitting passage of gas through the line and a closed position for preventing passage of gas through the line. An electric circuit controls the operation of the valve. The circuit comprises an electrical conductor on the line designed to break or otherwise become non-conductive in response to excessive heating or damage to the line, thereby causing an interruption in the flow of electric current through the electric circuit. The valve is responsive to such interruption to move to its closed position to prevent further passage of gas through the line.
    Type: Grant
    Filed: May 17, 1991
    Date of Patent: October 20, 1992
    Inventor: Malcolm Sturgis
  • Patent number: 5152322
    Abstract: A valve block assembly for an anti-lock assembly for anti-lock system for automotive vehicles. The assembly comprises a valve-receiving member (1) and a cover 92). The cover is made of plastics into which conducting paths are injection-molded. The conducting paths are part of a stamping (13). When the cover (2) is mounted on the valve-receiving member (1), all contacts are established between the pins (18) of the coils of the solenoid valves (19), on the one hand, and the erected ends (15) of the stamping (13), on the other hand. The instant invention accomplishes considerable simplification of the assembly.
    Type: Grant
    Filed: February 18, 1992
    Date of Patent: October 6, 1992
    Assignee: Alfred Teves GmbH
    Inventors: Joachim Maas, Erhard Beck, Winfried Schuetzeichel, Axel Hinz
  • Patent number: 5127440
    Abstract: A valve block assembly for an anti-lock assembly for anti-lock system for automotive vehicles. The assembly comprises a valve-receiving member (1) and a cover (2). The cover is made of plastics into which conducting paths are injection-molded. The conducting paths are part of a stamping (13). When the cover (2) is mounted on the valve-receiving member (1), all contacts are established between the pins (18) of the coils of the solenoid valves (19), on the one hand, and the erected ends (15) of the stamping (13), on the other hand. The instant invention accomplishes considerable simplification of the assembly.
    Type: Grant
    Filed: November 30, 1990
    Date of Patent: July 7, 1992
    Assignee: Alfred Teves GmbH
    Inventors: Joachim Maas, Erhard Beck, Winfried Schuetzeichel, Axel Hinz
  • Patent number: 5094268
    Abstract: A regulator, for example for an aircraft turbojet engine, comprises a fixed hydromechanical part, a number of external electrohydraulic elements having at least one electrical circuit and at least one hydraulic circuit, and an electrohydraulic connection plate disposed between the electrohydraulic elements and the fixed part, the connection plate having fluid passage means for communicating the hydraulic circuits of the electrohydraulic elements with respective circuits of the fixed hydromechanical part, and further means for the passage of electric cables for connecting the electrical circuits of the electrohydraulic elements to an overall electrical connection of the regulator, the cable passage means including channels in the face of the connection plate opposite the face on which the electrohydraulic elements are mounted, and the cables being held at the bottom of the channels by packing elements carried by a cover forming member, e.g.
    Type: Grant
    Filed: April 12, 1991
    Date of Patent: March 10, 1992
    Assignee: Societe Nationale d'Etude et de Construction de Moteurs d'Aviation "S.N.E.C.M.A."
    Inventors: Michel M. J. Morel, Roland Trenet
  • Patent number: 5070904
    Abstract: A BOP subsea control system utilizes hydraulic control of non-critical functions, and electro-hydraulic control of selected critical functions, such as the closing mode of one or more shear ram BOPs, one or more pipe ram BOPs and one or more annular type BOPs. In an alternative embodiment, the use of a conductive fluid in a hydraulic hose enables electric signals and hydraulic signals to be transmitted in the same hose.
    Type: Grant
    Filed: June 26, 1990
    Date of Patent: December 10, 1991
    Assignee: Baroid Technology, Inc.
    Inventors: James M. McMahon, Jr., Roland G. Haper, Jr.
  • Patent number: 5042527
    Abstract: A valve for use in a fluid dispensing system, the valve includes a valve body having a valve passage therein, having first and second ends, the second end including a valve seat. The valve also includes a valve stem having an end portion extending into the valve passage constructed to permit the flow of fluid through the passage past the end portion. The valve stem has sealing means for closing the second end of the passage, and is mounted for reciprocal movement in the valve passage between an extended position in which the sealing means on the valve stem engages the valve seat and closes the second end of the valve passage, and a retracted position in which the sealing means is spaced from the valve seat so that fluid can flow through the valve passage past the end portion of the valve stem. A spring resiliently biases the valve stem toward its extended position. The spring is protected from the fluid flow through the valve by a flexible annular sealing disk.
    Type: Grant
    Filed: November 27, 1989
    Date of Patent: August 27, 1991
    Assignee: Monsanto Company
    Inventor: Raymond C. Geimer
  • Patent number: 5025834
    Abstract: A device for conducting a fluid or for conducting electricity has at least one supply member which is internally provided with supply conductors for the fluid of the electric current. On the outer periphery the member is provided with attachment recesses by way of which it may be firmly connected with other structures.
    Type: Grant
    Filed: July 17, 1989
    Date of Patent: June 25, 1991
    Assignee: Festo KG
    Inventor: Kurt Stoll
  • Patent number: 5004012
    Abstract: An automatic water shut-off apparatus for connection to an intrusion alarm system, such as a burglar alarm, that provides for protection of a building from water damage while the alarm is armed. A valve, which controls water flow into the building, is closed whenever the alarm system is armed, thus preventing water damage while the building is unattended. A manual shut-off switch is also provided to close the valve and shut off the water when the alarm system is disarmed or for maintenance. A manual bypass valve may be provided to allow water flow into the building in the event of electrical failure.
    Type: Grant
    Filed: April 25, 1990
    Date of Patent: April 2, 1991
    Inventor: David R. Bratten
  • Patent number: 4997629
    Abstract: An assembly for the disinfectant of one or more toothbrushes or like objects comprising a housing generally in the form of a canister for the containment of a supply of disinfectant composition preferably in fluid form wherein an applicator chamber is formed within the housing and the toothbrushes are also oriented therein such that the head and bristle portion thereof are disposed within the applicator chamber in fluid communication with disinfectant issuing from the supply. The disinfectant supply may be in the form of a pressurized aerosol container or any other applicable supply container and pump combination.
    Type: Grant
    Filed: March 29, 1990
    Date of Patent: March 5, 1991
    Inventors: Paul Marchand, Willard Marchand, Noel W. Abramson, Stuart Rapee
  • Patent number: 4986445
    Abstract: A gasoline dispenser system includes a housing with a first enclosure providing a safe area for mounting electrical apparatus, a second enclosure providing a hazaradous area for mounting fuel carrying apparatus, an air gap vapor barrier separating the first and second enclosures, at least one bifurcated electromechanical valve for controlling gasoline flow, having a solenoid winding mounted within the first enclosure, and a valve body mounted within the second enclosure, with a control rod connected from the solenoid winding, through the air gap, to a plunger or control device within the valve body, and with an elastomeric seal about the control rod for secondary sealing where it enters the second enclosure, for substantially preventing gasoline fumes from escaping from the second enclosure into the air gap.
    Type: Grant
    Filed: December 4, 1989
    Date of Patent: January 22, 1991
    Assignee: Gilbarco Inc.
    Inventors: Harold R. Young, John S. McSpadden, James R. McMordie, Leon B. Smith
  • Patent number: 4944485
    Abstract: The clamp for flexible tubing may be used in conjunction with an infusion pump instrument or separately. The clamp includes a pair of elongated clamping members pivotally hinged together and biased to clamp a segment of flexible tubing received between the clamping members. A latch is also preferably provided for allowing the clamping members to be releasably latched apart. The latch, and the elongated clamping members are arranged in a manner such that when the clamp has a segment of flexible tubing received between the clamping members and the clamp and tubing are set between the housing and door of an infusion pump, closing the door causes the clamp to release to an open position allowing fluid flow, and opening the door causes the clamp to automatically move to a closed position, clamping the tubing so as to prevent fluid flow.
    Type: Grant
    Filed: August 28, 1989
    Date of Patent: July 31, 1990
    Assignee: IVAC Corporation
    Inventors: Adib G. Daoud, Fred W. Bacher
  • Patent number: 4938258
    Abstract: A power-supply system for solenoid valves having one or more brackets attached to a manifold base, the brackets support a printed-wiring board carrying a prnted power-supply circuit and power-supply terminals, the use of one or more brackets permit using the same common manifold base with or without the printed-wiring board. Each bracket has a longitudinal opening into which the power-supply terminal is snugly fitted and is attached to one side of the manifold base. A multipolar connector on the printed-wiring board is connected to the power-supply terminals by a power-supply circuit printed on the printed-wiring board. The multipolar connector connects to a power source. When the printed-wiring board is inserted into the brackets, the power-supply terminals stick out from the longitudinal opening in the brackets.
    Type: Grant
    Filed: May 12, 1989
    Date of Patent: July 3, 1990
    Assignee: SMC Corporation
    Inventor: Hideharu Sato
  • Patent number: 4913189
    Abstract: A control module for controlling the operation of multiple fluid pressure actuated devices and electrical devices, as in an automotive heating/cooling system, includes a one-piece sheet metal frame or bracket upon which a plurality of solenoid valves, circuit boards and a manifold are assembled in a compact, tightly, but easily assembled, package. The assembled package is of a generally rectangular box-shaped configuration with electrical and fluid flow connections located at one end to connect with electric and fluid connectors fixedly mounted on the vehicle to provide a simple plug-in-type installation of the module on the vehicle assembly line.
    Type: Grant
    Filed: March 17, 1989
    Date of Patent: April 3, 1990
    Assignee: Colt Industries Inc.
    Inventors: Loren H. Kline, Eddie L. Johnson, John G. Berent, James T. McIntyre
  • Patent number: 4880025
    Abstract: A BOP subsea control system utilizes hydraulic control of non-critical functions, and electro-hydraulic control of selected critical functions, such as the closing mode of one or more shear ram BOPs, one or more pipe ram BOPs and one or more annular type BOPs. In an alternative embodiment, the use of a conductive fluid in a hydraulic hose enables electric signals and hydraulic signals to be transmitted in the same hose.
    Type: Grant
    Filed: May 1, 1989
    Date of Patent: November 14, 1989
    Assignee: Baroid Technology, Inc.
    Inventors: James M. McMahan, Jr., Roland G. Harper, Jr.
  • Patent number: 4877054
    Abstract: This relates to a rotary switch and rotary valve assembly for a multiple work station machine wherein the work stations rotate and are sequentially presented to an operating position. There may be a high voltage and two low voltage switches with the switches being so constructed wherein electrical connections are made with each work station in timed relation to its presentation to the work position and for the required period of time. Further, the rotary valve assembly functions in sequence to present operating fluids to each work station in the order of presentation of such work station to its operating position and in timed sequence to the operation performed thereby.
    Type: Grant
    Filed: January 31, 1989
    Date of Patent: October 31, 1989
    Assignee: Continental Can Company, Inc.
    Inventor: John Walter
  • Patent number: 4830054
    Abstract: A component group of electromagnetically shiftable directional control valves which can be installed in a simple manner includes 2/2- and 3/2-directional control valves preassembled on an electrical printed circuit board and secured in common with the printed circuit board by plugging-in the directional control valves into plug-in receptacles of a base element and by fastening a cover at the base element in the housing formed by the base element and the cover; a pneumatic main channel extends between the base element and the cover which is in fluidic communication with several directional control valves and which is tightly closed off by fastening the cover at the base element.
    Type: Grant
    Filed: May 27, 1988
    Date of Patent: May 16, 1989
    Assignees: Daimler-Benz Aktiengesellschaft, Eaton S.A.M.
    Inventors: Dieter Feichtiger, Klaus Neuffer, Wolfgang Biber, Elmar Freitag, Jean P. Corbier, Christian Dragoni
  • Patent number: 4830048
    Abstract: This relates to a rotary switch and rotary valve assembly for a multiple work station machine wherein the work stations rotate and are sequentially presented to an operating position. There may be a high voltage and two low voltage switches with the switches being so constructed wherein electrical connections are made with each work station in timed relation to its presentation to the work position and for the required period of time. Further, the rotary valve assembly functions in sequence to present operating fluids to each work station in the order of presentation of such work station to its operating position and in timed sequence to the operation performed thereby.
    Type: Grant
    Filed: June 16, 1988
    Date of Patent: May 16, 1989
    Assignee: Continental Can Company, Inc.
    Inventor: John Walter
  • Patent number: 4815496
    Abstract: A power feeder for solenoid valves has a printed wiring board carrying a printed feeder circuitry firmly supported on a manifold base. Thus, electrical connection between the solenoid valves and printed wiring board is accomplished simultaneously with the fastening of the solenoid valves to the manifold base. U-shaped brackets having a width corresponding to the width of each solenoid valve are attached to rails provided on one side of the manifold base by fitting engaging shoes provided on one side wall of the brackets over the rails. The printed wiring board is placed on the side walls of the brackets, while the feeding terminal of a terminal box at one end of the connected brackets is connected to the receiving terminal of the printed wiring board by means of a cable connector passed through the brackets.
    Type: Grant
    Filed: December 29, 1987
    Date of Patent: March 28, 1989
    Assignee: SMC Corporation
    Inventors: Kenzi Nishitani, Hideyuki Takata
  • Patent number: 4806258
    Abstract: A fluid filtering stop valve having a body with a cylindrical chamber having a circumferential sidewall with inlet, outlet and flush ports, and a cylindrical plug member rotatably disposed in the chamber. The plug member has spaced apart first and second circular plates with an off-center filtering screen extending therebetween. The plug member is rotatably between a filtering position in which the screen is located in the fluid flow between the inlet and outlet ports, a backflushing position in which the screen is located in the fluid flow between the inlet and flush ports, with the filtering side of the screen toward the flush port, and a closed position in which an arcuate plate washer loosely retained between the first and second plates is positioned to seal the flush and outlet ports. In the filtering position the washer seals only the flush port and in the flush position the washer seals only the outlet port. The screen uses outwardly diverging ribs to reduce lodging of material between the ribs.
    Type: Grant
    Filed: September 4, 1987
    Date of Patent: February 21, 1989
    Assignee: Remco Research and Development, Inc.
    Inventor: Ronnie J. Duncan
  • Patent number: 4793378
    Abstract: A four way two position interlock air valve adapted to selectively provide air pressure to a servomotor to shift the range section of a transmission. The valve spool is moved by applying pressure to one end thereof while exhausting pressure from the other. The upper side of the spool has a recessed portion within which a valve slide is positioned. The slide is operative to provide communication between a pressurized inlet port and the one of two outlet ports connected to the servomotor depending on the position of the valve spool. The slide is urged upwardly against the inner surface of the valve body by a wave spring. The area of the upper side of the slide is smaller than the area of the lower side thereof and an aperture connects the two sides such that air pressure controlled thereby also urges the slide upwardly against the valve body.
    Type: Grant
    Filed: May 21, 1987
    Date of Patent: December 27, 1988
    Assignee: Dana Corporation
    Inventors: John M. Loeffler, Rick D. Watson, George F. Schetter
  • Patent number: 4700743
    Abstract: Miniature fluidic connector that fits into an electrical connector for printed circuit boards with a built-in heat exchanger. Male and female fluidic contacts are mountable in openings in the plug or receptacle of the electrical connector and have respective tips to couple with each other. Upon coupling, the ends of the openings of the plug and the receptacle of the electrical connector are substantially in pressure contact against each other. Preferably, the male and female fluidic contacts have inner chambers adapted to receive self-plugging devices.
    Type: Grant
    Filed: March 11, 1986
    Date of Patent: October 20, 1987
    Assignee: Amphenol Corporation
    Inventors: Patrick L'Henaff, Herve Bricaud
  • Patent number: 4679588
    Abstract: A single rotary shaft connected to a single rotary carriage operates a vacuum selector valve and two rotary electrical switches, in a casing having rear and front components. The valve comprises a valve carriage, slidable along a linear channel in the rear component. A gear rack on the valve carriage meshes with a pinion gear on the rotary carriage. The valve carriage is slidably retained in the valve channel by the switch contact plates of the first rotary switch. Such contact plates have terminal portions retained between the front and rear casing components. The contactors of the two switches face in opposite directions on the rotary carriage and are biased by a single coil spring, insulated from one of the contactors by a cup-shaped insulating member. The contact plates of the second switch are mounted on the front casing component and have terminals extending outside of the rear casing component through slots therein.
    Type: Grant
    Filed: November 21, 1985
    Date of Patent: July 14, 1987
    Assignee: Indak Manufacturing Corp.
    Inventors: Andrew F. Raab, Albert R. Cobb, III
  • Patent number: 4633902
    Abstract: A valve for interrupting the flow of water between a source and a showerhead wherein the valve includes a soap dish moveable from a closed to an open, soap retrieving position, the soap dish being attached to the valve whereby movement of the soap dish to the closed position permits flow of water through the valve to the showerhead, and movement of the soap dish to an open, soap retrieving position closes the valve interrupting water flow to the showerhead. Soap is therefore accessible only when the water flow is interrupted.
    Type: Grant
    Filed: March 25, 1985
    Date of Patent: January 6, 1987
    Inventor: Mikhail E. Tsipov
  • Patent number: 4607615
    Abstract: A system for isolating a pressurized water source from a pressurized hot water tank when a leak or rupture occurs to the tank. The system includes a connecting line attached between a check valve and a control valve with a diaphragm attached to the control valve body to sense the pressure differential between the water source and the connecting line. Upon a leak or a rupture occurring, the diaphragm completely closes the control valve. The check valve does not allow the hot water from the water heater tank to enter the domestic system when a leak or rupture occurs. The system further allowing cold water to enter the tank when a predetermined temperature is reached or exceeded. The system further allowing for make up of water volume loss in the tank during a cooling cycle.
    Type: Grant
    Filed: March 28, 1985
    Date of Patent: August 26, 1986
    Inventor: Wayne S. Boals
  • Patent number: 4508141
    Abstract: A valve for interrupting the flow of water between a source and a showerhead wherein the valve includes a soap dish moveable from a closed to an open, soap retrieving position, the soap dish being attached to the valve whereby movement of the soap dish to the closed position permits flow of water through the valve to the showerhead, and movement of the soap dish to an open, soap retrieving position closes the valve interrupting water flow to the showerhead. Soap is therefore only accessible when the water flow is interrupted.
    Type: Grant
    Filed: March 10, 1983
    Date of Patent: April 2, 1985
    Inventor: Mikhail E. Tsipov
  • Patent number: 4486060
    Abstract: The invention relates to a connector arrangement for connecting two liquid supply ducts and at least two electrical leads. The connector arrangement comprises two abuttable bodies each having attachment means to a liquid supply duct and connections to the electrical leads and including a valve to close the liquid supply ducts. The electrical connection is made by an elongate conductor on one body entering a socket in the other body, this connection being made before the possibility of arcing between the electrical connections igniting the liquid.
    Type: Grant
    Filed: October 14, 1982
    Date of Patent: December 4, 1984
    Assignee: Plessey Overseas Limited
    Inventor: William J. P. Currall
  • Patent number: 4479509
    Abstract: A flow control valve installation having blind holes in internal surfaces. The holes are slanted in the downstream direction and tuned to null one or more frequencies in the noise spectrum for the valve by the selection of proper depths for the holes.
    Type: Grant
    Filed: April 21, 1982
    Date of Patent: October 30, 1984
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Terrence A. Dear, Allan B. Hughes
  • Patent number: 4445536
    Abstract: There is disclosed a coupling for effecting pneumatic connection between a rack and a circuit board carrying both electrical and pneumatic control elements where concurrent connection is made of electric and pneumatic circuits as the circuit board is inserted in the rack. The coupling comprises a male unit with a wedge shaped insertion probe penetrated by a flow channel terminating in an interconnection port and a female unit with an opening for receiving the insertion probe of the male unit and an interconnection port mating across an interface surface with the male interconnection port. The female coupling unit further includes a shuttle with axial symmetry having an actuator shaft of a diameter to slide within the uniform bore portion of the tunnel at one end, a stop that cannot enter the uniform bore portion of the tunnel at the other end, two spaced apart seals of a diameter to make a sealing fit to the uniform bore portion of the tunnel positioned intermediately.
    Type: Grant
    Filed: May 21, 1982
    Date of Patent: May 1, 1984
    Assignee: Linear Dynamics, Inc.
    Inventor: John G. Willis
  • Patent number: 4292999
    Abstract: The invention relates to a valve for toy balloons, this valve opening inwardly under very minor excess pressure and yet providing a tight seal by means of an additional cap. A container surrounding the valve and flaring conically serves for introducing the valve into the balloon aperture without the need for a special mounting or sealing means. The container is sealed by a removable lid containing the cap and simultaneously making it possible to introduce an internal illumination for the balloon.
    Type: Grant
    Filed: February 7, 1980
    Date of Patent: October 6, 1981
    Inventor: Anton Szollmann
  • Patent number: 4275860
    Abstract: A shipboard system that provides safe storage and complete quality control of aviation fuels from acceptance of the fuel at shipside to delivery of clean, dry fuel at a shipborne aircraft includes a storage tank disposed in a closed chamber defined by a cofferdam. The tank is mounted in the chamber to provide an airspace around all sides which is vented to the atmosphere and maintains any concentration of fuel vapor in the chamber below a predetermined lean limit. Fire protection apparatus of the system is actuated by a rate of temperature rise detector and releases an agent that floods the chamber to terminate the combustion cycle in the event of a fire. Conduit runs include filters to remove contaminants when fuel is pumped through and also include a closed-circuit filtered conduit through which the fuel is frequently recirculated to control deterioration of the system and degradation of the fuel caused by long term storage and intermittent use of the system.
    Type: Grant
    Filed: October 2, 1978
    Date of Patent: June 30, 1981
    Inventor: Jack A. Brabazon
  • Patent number: 4148337
    Abstract: A free delivery controlled return valve, of the type employed in fluid power hoisting apparatus, which controls the speed at which a load is lowered as a function of load magnitude. An improved valve structure is disclosed which overcomes false load signals, such as those generated when the hoisting apparatus' lift cylinders are fully extended against a stop, and which thus permits the load platform to descend at an appropriate speed. An improved fluid sonic muffler is also disclosed.
    Type: Grant
    Filed: February 8, 1977
    Date of Patent: April 10, 1979
    Assignee: Fluid Controls, Inc.
    Inventor: Charles R. Ellmers
  • Patent number: 4108195
    Abstract: A quick-closing fire gate is provided having specific application to sectionalized production facilities using vibratory conveyors to transport volatile substances. The conveyor passes through a portal defined by a gate housing at each barrier wall. The gate door or blade initially positioned above the housing is knife-edged to sever the conveyor during its downward translation and is forced flush against the gate housing by the interaction of opposed inclined surfaces on the blade and its support structure. The inclined surfaces furthermore function to eliminate gate rebound by dissipating the kinetic energy of the falling blade and redirecting reaction forces away from the line of blade travel. The rapidity of gate operation is accomplished by a photosensitive cell detonating an explosive bolt which releases a pressurized piston connected to the gate blade.
    Type: Grant
    Filed: June 23, 1977
    Date of Patent: August 22, 1978
    Inventor: Henry K. Berry
  • Patent number: 4069837
    Abstract: An overflow control unit for a washing machine which interconnects the drain hose of the washing machine to a stand-pipe is provided which comprises a cylindrical plug device having a central axially extending passageway therethrough and a by-pass valve interconnecting the passageway of the cylindrical plug with the atmosphere, the by-pass valve having an open and a closed position. In one embodiment the overflow control unit is operatively connected to a pressure switch so that upon a build-up of water pressure within the stand-pipe due to the drain being obstructed the switch is activated to break the electrical circuit to the washing machine.
    Type: Grant
    Filed: March 23, 1976
    Date of Patent: January 24, 1978
    Inventor: James D. Jirasek
  • Patent number: 3995430
    Abstract: A flow control apparatus having a noise and vibration suppression arrangement associated therewith. A suitable piping arrangement permits introduction of a pressurized fluid into a chamber above a valve plug movably disposed within the casing of the flow control apparatus. The fluid is conducted into the plug chamber from a region having a pressure therein higher than the pressure immediately beneath the valve plug and passes from the plug chamber to mix with the high velocity inlet flow entering the flow control apparatus to dissipate the energy associated with the influent flow and to prevent excessive noise and vibration levels within the flow control apparatus.
    Type: Grant
    Filed: March 28, 1975
    Date of Patent: December 7, 1976
    Assignee: Westinghouse Electric Corporation
    Inventor: Delmer Q. Hoover, Jr.
  • Patent number: 3978885
    Abstract: A flow control apparatus which has an external conduit for conducting fluid from a region having a pressure therein higher than the pressure immediately beneath a valve plug into an internal cavity disposed within the valve plug is provided with an unbalance actuator for isolating the cavity from the region when, for any reason, the pressure within the cavity exceeds the pressure within the region.
    Type: Grant
    Filed: March 28, 1975
    Date of Patent: September 7, 1976
    Assignee: Westinghouse Electric Corporation
    Inventor: Chien Shiong Lu