Patents Examined by Richard Gerard
  • Patent number: 4344453
    Abstract: Apparatus for cleaning a liquid connection, securing a stroke and spring abutment for double-seat pipeline switches with leakage control, comprising two valve disks of different sizes which are movable relative to each other and independently of each other, the smaller valve disk facing away from a drive rigidly connected via a valve rod with a pipeline switch drive and, upon its lift motion after a given partial stroke, positively carrying along with it the other, larger valve disk, the valve rods of the valve disks pointing in the same direction and engaging telescopically into each other with the end of the hollow valve rod which concentrically surrounds the other valve rod receiving, outside the pipeline switch housing, in a form fitting manner, a pressing and guide part, equipped with a lower stop surface and spring abutment, the valve disks both in the closed position and in the open position enclosing between themselves a leakage cavity which is connected via openings with a discharge bore leading into
    Type: Grant
    Filed: January 27, 1978
    Date of Patent: August 17, 1982
    Assignee: Otto Tuchenhagen GmbH & Co. KG
    Inventors: Otto A. P. Tuchenhagen, Hans O. E. Mieth, Herbert R. Coura
  • Patent number: 4270564
    Abstract: There is disclosed a purging system for removing foreign matter from a fluid conducting conduit in which a sensor detects the presence of the foreign matter and produces an electrical signal which activates a timer which, in turn, connects a pump to the conduit for a given time duration to purge the conduit of the foreign matter. A counter also maybe connected to periodically activate the timer and purge the conduit, whether or not the sensor has detected foreign matter.
    Type: Grant
    Filed: July 24, 1978
    Date of Patent: June 2, 1981
    Assignee: Liston Scientific Corp.
    Inventors: Wayne E. Blackburn, Max D. Liston, William A. Stark
  • Patent number: 4267853
    Abstract: A gas pipe including a tube of expansible material defining a passage for gas and capable of expansion, when heated, to close the passage upon carbonization. The tube is surrounded by a cylindrical noninflammable member.A joint for connecting gas pipes which includes a tube of expansible material contained in a metallic tubular member and defining a passage for gas. The tube is capable of expansion, when heated, to close the passage upon carbonization.A method of manufacturing thermally expansible rubber tube for the gas pipe and the gas pipe joint. About 2 to 30 parts by weight of oxidized, thermally expansible graphite powder is mixed with 100 parts by weight of raw rubber, and a predetermined quantity of a curing agent and a cure accelerator are added to the rubber and graphite mixture, followed by its formation into a tubular shape.
    Type: Grant
    Filed: February 13, 1978
    Date of Patent: May 19, 1981
    Assignees: Toho Gasu Kabushiki Daisha, Kabushiki Kaisha Togawa Gomu Seizosho
    Inventors: Yukio Yamaguchi, Kenji Ishihara, Kikuo Yonekura
  • Patent number: 4267854
    Abstract: A flood valve adapted to close an opening through a barrier wall separating a fluid from a space, the valve having a plastic body with a bore therethrough, a piston slidable in the bore, a heating element carried by the body and having a section extending across the bore to restrain the piston against movement out of the bore, and a spring urging the piston against the restraining section of the heating element, the piston normally sealing the bore and the heating element, when energized, burning through the plastic body material to release the piston for admission of fluid through the bore to the space.
    Type: Grant
    Filed: August 6, 1979
    Date of Patent: May 19, 1981
    Assignee: Conax Corporation
    Inventors: Carlton W. Naab, Roman Jankowiak
  • Patent number: 4263930
    Abstract: A novel operator is disclosed for use in combination with a butterfly fire and volume control damper, which operator may be concealed behind a standard concentric diffuser. Only a screwdriver aperture need be provided in the diffuser to facilitate volume adjustment or resetting of the bufferfly damper. In response to excessive heat in the vicinity of the damper, or alternatively, in response to a remote signal received by the operator, the blades of the damper will move to their fully closed position. Once activation conditions have passed, a screwdriver is used to reset the damper to resume its volume control function.
    Type: Grant
    Filed: April 27, 1978
    Date of Patent: April 28, 1981
    Assignee: Prefco Products, Inc.
    Inventor: Francis J. McCabe
  • Patent number: 4263163
    Abstract: This invention is directed to a method and an apparatus to heat certain particles. These certain particles are heated to make them more desirable. In the heating of these particles, it is often desirable to expand the particles to make a light-weight aggregate. The light-weight aggregate may be used in making a building material or the like. In carrying out the process of heating these particles, there is used air for combustion of the combustible fuel and only a minimum of air for carrying of the particles or expansion of the particles.
    Type: Grant
    Filed: April 14, 1977
    Date of Patent: April 21, 1981
    Inventor: Donald R. Ross
  • Patent number: 4257528
    Abstract: A reverse buckling disc pressure relief venting apparatus in which the disc is held in position by an annular abutment against which the edge of the disc is forced when spreading under pressure and in which sealing is performed by means of a compressible seal acting between the disc and a support member for the disc.
    Type: Grant
    Filed: April 10, 1978
    Date of Patent: March 24, 1981
    Assignee: IMI Marston Limited
    Inventor: George W. Brodie
  • Patent number: 4256133
    Abstract: A watering valve device includes a first electromagnetic coil for opening a valve to enable a sprinkling system and a second electromagnetic coil for closing the valve. An electronic circuit is provided for supplying current pulses for selectively energizing the two coils to control sprinkling in response to ground moisture and/or sunlight. The circuit includes a first timer for maintaining the sprinkling valve on for a predetermined timer period after sunlight occurs to assure penetration of the ground by moisture during night-time watering. The circuit includes a second timer for maintaining the valve on for a second predetermined time period following moisture detection by a ground probe to assure ground penetration by moisture during a moisture responsive, closed loop mode of control. The circuit and valve are operated by batteries that are charged by sunlight.
    Type: Grant
    Filed: August 22, 1978
    Date of Patent: March 17, 1981
    Inventors: Noel D. Coward, Donald G. Collins, Kenneth H. Gambling
  • Patent number: 4249555
    Abstract: A fire safe disc valve comprising a valve body having a flow passageway therethrough, a disc shaft rotatably mounted in the flow passageway and a disc mounted on the disc shaft, the disc being rotatable to and from a position normally closing the flow passageway by sealingly engaging a disc sealing member. An operating stem, extending through a stem operating aperture in the valve body, engages the disc shaft for rotation thereof, and an elastomeric packer seals the aperture about the operating stem. The disc shaft is displaceable along the flow passageway whereby the disc will close the passageway if the disc sealing member is destroyed, and the operating stem is axially displaceable in the stem operating aperture whereby the aperture is sealed by fluid pressure pressing the operating stem against a stem sealing seat if the stem packer is destroyed.
    Type: Grant
    Filed: December 30, 1977
    Date of Patent: February 10, 1981
    Inventor: Domer Scaramucci
  • Patent number: 4248257
    Abstract: A gas actuated valve enabling high-speed actuation silently and rapidly os one or more blocked ports in a floodable container, thereby permitting the flooding of the otherwise closed container by ambient fluid. The valve includes a sleeve mounted for sliding movement about a base, the latter being attached to the interior of the container at each port. An electrically-initiated, gas-generating pyrotechnic bolt is threadedly connected between, and disposed in a cavity defined between the sleeve and the base. The bolt, before actuation, functions as a tensile member to withstand ambient pressure, thereby preventing the valve from opening prematurely. When actuated, the bolt fuses, separates, and releases hot gases into the cavity which expand and bear against the sleeve, causing the sleeve to move away from the port so that the container port opens completely thereby flooding the container.
    Type: Grant
    Filed: March 26, 1979
    Date of Patent: February 3, 1981
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Thomas K. C. Hardesty
  • Patent number: 4248401
    Abstract: A plastic slide clamp for tubing is provided which includes a slightly bowed configuration to compensate for the phenomenon of cold flow when plastic tubing is crimped shut by the clamp. In one embodiment, the clamp is provided with an insert member of low friction surface properties which surrounds the crimping slot.
    Type: Grant
    Filed: May 7, 1979
    Date of Patent: February 3, 1981
    Assignee: Baxter Travenol Laboratories, Inc.
    Inventor: Herbert Mittleman
  • Patent number: 4247076
    Abstract: A flow control device for flexible tubing wherein the device utilizes a toggle action in compressing the tubing against an anvil surface. A ratchet element is employed in conjunction with the toggle-action clamp to incrementally compress the tubing against the anvil surface. The clamp can be inexpensively molded in one piece and easily assembled without the placement of additional parts in the clamp body. The ratchet and toggle mechanisms offer the advantage of a one-hand operation for incremental compression of the tubing as well as a release of the clamp member.
    Type: Grant
    Filed: April 16, 1979
    Date of Patent: January 27, 1981
    Assignee: Abbott Laboratories
    Inventor: Mark E. Larkin
  • Patent number: 4245661
    Abstract: A valve operator that is provided with a back seat which comes into use when the normally non-rising stem operator and its bearing-enclosing bonnet gland are raised, e.g. so that stem packing can be replaced, is further provided with another way to actuate the back seat, one which will come into play should the valve be subjected to heat of sufficient intensity as to call the integrity of the stem packing or other critical parts into question. The further activation mode depends on the melting of fusible material which permits the operator and its bearings to rise relative to the bonnet.
    Type: Grant
    Filed: October 27, 1978
    Date of Patent: January 20, 1981
    Assignee: Combustion Engineering, Inc.
    Inventor: John K. McGee
  • Patent number: 4245662
    Abstract: A valve operator for a normally open valve is maintained in a cocked, ready to close mode by an arrangement which includes a radially contracted, self-expansible split retainer ring backed by a body of fusible material. Should the vicinity of the associated valve be subjected to the heat of a fire, the fusible body will melt out of blocking relation, permitting the split ring to expand free of the operator stem. A cocked spring recovers, axially moving the stem both to shut the valve and to engage a metal-to-metal back seat between the valve stem and valve bonnet. The latter event ensures against leakage even if the fire or wear has ruined the integrity of the usual valve stem packing.
    Type: Grant
    Filed: October 27, 1978
    Date of Patent: January 20, 1981
    Assignee: Combustion Engineering, Inc.
    Inventor: John K. McGee
  • Patent number: 4245812
    Abstract: A simplified device which dispenses accurate amounts of pressurized fluid, such as a liquid adhesive, upon application of force, e.g., finger pressure, upon a lever means which causes at least partial release of clamp pressure upon a tube carrying the fluid.
    Type: Grant
    Filed: August 4, 1978
    Date of Patent: January 20, 1981
    Assignee: Loctite Corporation
    Inventor: Robert Burger
  • Patent number: 4245672
    Abstract: A drilling rig comprising a plurality of pipes connected in a row, with a drill at the lower end; the rotation transmitting bar or Kelly bar at the top end of the drilling rig must be periodically disconnected so as to install a new pipe section; the invention comprises a valve to seal the upper rotating or Kelly bar when it is disconnected so as to keep the sludge pump primed; the valve comprising a collapsible diaphragm which is forced shut by pressurized fluid to seal the rotating or Kelly bar; and an air escape valve communicating into the row of pipes beneath the sealing valve for effecting removal of air trapped beneath the rotating or Kelly bar valve.
    Type: Grant
    Filed: March 24, 1978
    Date of Patent: January 20, 1981
    Inventors: Carlos Schott Malo, Carlos C. Schott Dubon
  • Patent number: 4246115
    Abstract: An interlock is disclosed for permitting only one of a plurality of interrelated valve elements to be operated at one time. A transverse channel is formed in each valve element for alignment with a channel formed in the valve housing when the valve elements are moved to their respective opened positions. When any one valve element is moved to its closed position, camming surfaces formed on the valve element are positioned and shaped to cause a train of end abutting links disposed within the valve and housing channels to be displaced in a manner to lock the remaining valves in their respective open positions. The valve channels and camming surfaces are formed by very simple and inexpensive linear cutting operations thereby allowing the disclosed device to be inexpensively manufactured.
    Type: Grant
    Filed: August 28, 1978
    Date of Patent: January 20, 1981
    Assignee: Cummins Engine Company, Inc.
    Inventor: Bryan W. Swank
  • Patent number: 4244386
    Abstract: A combination gas generator and pyrotechnic separation device which causes separation of elements safely, quietly, quickly, and without the production of loose parts or release of combustion gases to the ambient environment. A tubular tensile element houses a quantity of pyrotechnic material which, when ignited, burns, fuses or melts a tensile element allowing the separable elements to break apart. High pressure gases generated by the combustion of the pyrotechnic material aids in separating the separable elements.
    Type: Grant
    Filed: January 30, 1979
    Date of Patent: January 13, 1981
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Thomas K. C. Hardesty
  • Patent number: 4244393
    Abstract: The present invention concerns a shut-off valve comprising a valve body with at least two flow ports, two shutters and a turning shaft. Said shutters are placed opposite each other on an annular spring which forms the lower part of the turning shaft and by means of which the shutters are pressed against and carried along the inner surface of the valve body, or housing, closing simultaneously said two flow ports. The spring is further braced against the bottom of the valve body, or its tensioning device, in the axial direction of the turning shaft.
    Type: Grant
    Filed: July 31, 1978
    Date of Patent: January 13, 1981
    Inventor: Kari Lehtinen
  • Patent number: 4244387
    Abstract: In a butterfly valve, comprising a valve disk pivotally mounted for movement between a closed position, in which the disk prevents the passage of fluid along a passageway, and an open position, in which the passage of fluid is allowed, an annular seal is provided to seal between the periphery of the disk and the wall of the passageway, provided by a valve housing, when the disk is in its closed position. The seal comprises two deformable sealing members, of P.C.T.F.E., mounted to seal against fluid flow in either direction along the passageway. A rigid former or rigid support ring is mounted between the sealing members to provide support therefor, and to act as a back-up seal in case fire should destroy the primary sealing members. In order that the former can be effective as a seal, it is clamped between the valve housing and a clamping ring independently of the fire-destructible primary sealing members.
    Type: Grant
    Filed: November 8, 1978
    Date of Patent: January 13, 1981
    Assignee: Charles Winn (Valves) Limited
    Inventor: Christopher J. Snape