Patents Represented by Law Firm Fitch, Even, Tabin, Flannery & Welsh
  • Guide device for use in elongate filament dispensing package and the like
    Patent number: 4274607
    Abstract: A reusable guide device for use in guiding elongate filament such as wire from a coil contained within a package or carton, the guide device including a tubular guide member adapted to be inserted radially into the coil and having means for securing an outer end of the guide member within an opening in the carton so that the elongate filament may be paid out from the coil through the guide member. Restraint means in the form of a plurality of finger barriers are provided within the guide member and cooperate with the elongate filament to prevent its retraction or withdrawal back into the package.
    Type: Grant
    Filed: December 3, 1979
    Date of Patent: June 23, 1981
    Assignee: Belden Corporation
    Inventor: James D. Priest
  • Systems for merging of toroidal plasmas
    Patent number: 4274919
    Abstract: Methods and apparatus for merging of tokamak plasmas, having applications including pseudo steady-state tokamak operation, refueling, impurity removal and plasma heating. In such systems, currents of two merging tokamak plasmas are provided in the same direction so that the plasma columns attract each other, and the merging of the plasmas is carried out under the control of appropriate guiding fields.
    Type: Grant
    Filed: November 14, 1977
    Date of Patent: June 23, 1981
    Assignee: General Atomic Company
    Inventors: Torkil H. Jensen, Nobuyoshi Ohyabu, Chung-Lih Hsieh
  • Medical infusion system
    Patent number: 4273121
    Abstract: A medical infusion system is described employing a pump for conducting fluid or semi-solids from an upstream portion to a downstream portion of the system. The pump includes upstream and downstream conduit means and a removable cassette communicating between the two. The cassette has a window therein and a diaphragm spans the window. The cassette has inlet and outlet openings valvelessly communicating with the pumping chamber or cavity of the cassette. Fluid in the conduit is pumped by restricting and opening the conduit means at upstream and downstream locations, and displacing the contents of the cassette pumping chamber appropriately.
    Type: Grant
    Filed: September 28, 1979
    Date of Patent: June 16, 1981
    Assignee: Andros Incorporated
    Inventor: Jal S. Jassawalla
  • Bi-leaflet heart valve
    Patent number: 4272854
    Abstract: A heart valve prosthesis having an annular valve body defining a central passageway which is closed by a pair of pivoting leaflets. Projections extending laterally from each of the leaflets are received in socket means provided at generally diametrically opposite locations in the interior wall of the valve body. Slot portions of the socket means guide the pivotal movement of the leaflets. The pivotal axis of each leaflet is eccentrically located and moves relative to the valve body during opening and closing motion.
    Type: Grant
    Filed: August 7, 1979
    Date of Patent: June 16, 1981
    Assignee: Carbomedics, Inc.
    Inventor: Jack C. Bokros
  • Reel mechanism for use in a playing device
    Patent number: 4273334
    Abstract: A reel mechanism for use in a playing device comprises a DC motor having a rotor formed with an outer apron on which are displayed a plurality of substantially equally spaced symbols which are to be sequentially displayed in a visual field. The rotor rotates about the stator with the rotor having permanent magnetic poles which interact with the stator. The apron has a plurality of perforations or recesses associated with the individual symbols which are scanned by a plurality of photo-transistor scanning devices so as to generate for each symbol upon its passing of a particular position unique information scanning signals which identify each of the symbols.
    Type: Grant
    Filed: May 29, 1979
    Date of Patent: June 16, 1981
    Assignee: Gunter Wulff-Apparatebau GmbH
    Inventors: Siegfried Schone, Joachim Ramlow
  • Tennis-racket
    Patent number: 4273331
    Abstract: Tennis rackets or the like having cross and longitudinal strings lying in parallel, adjacent planes in which slidably mounted tubes are provided over the strings, and in which the tubes are fastened together at their respective points of intersection.
    Type: Grant
    Filed: December 8, 1977
    Date of Patent: June 16, 1981
    Inventor: Werner Fischer
  • Substrate coupled floating gate memory cell
    Patent number: 4274012
    Abstract: Nonvolatile semiconductor electrically-alterable, floating-gate memory methods and devices which utilize substrate coupling for self-regulated, tunnel-current-shaping to provide improved device characteristics. The substrate coupling also facilitates the cell interconnection to other circuit elements.
    Type: Grant
    Filed: January 24, 1979
    Date of Patent: June 16, 1981
    Assignee: Xicor, Inc.
    Inventor: Richard T. Simko
  • AC Resonance transformer
    Patent number: 4274046
    Abstract: An a.c. Resonance Transformer for operating at a predetermined frequency. The transformer comprises a resonant .pi.-type or T-type stage. The .pi.-type stage includes three series connected four-terminal networks. The first of the networks and the third of the networks includes a shunt reactor of a first type. The second of the networks includes two series connected second type reactors and a first type reactor shunt connected to the junction between the second type reactors. The reactors in the second of the networks are sized so that when an input signal of a predetermined frequency is applied to the input of the first of the networks, a 180.degree. phase shift is provided between the phase angle of the input and output voltage vectors of the second of the networks and so that a zero input impedance is provided when the output is short circuited.
    Type: Grant
    Filed: June 19, 1978
    Date of Patent: June 16, 1981
    Assignee: Maxwell Laboratories, Inc.
    Inventor: John L. Harrison
  • Process for electrowinning of metals
    Patent number: 4272339
    Abstract: An electrowinning process for the recovery of various metals including copper, zinc and nickel from an aqueous electrolyte in an electrolytic cell containing anodes and cathodes is disclosed wherein the anodes are formed from a lead alloy containing from about 0.05% to about 0.25% by weight strontium. The lead alloy for the anodes also preferably includes from about 0.005% to about 0.1% by weight aluminum alone or in further combination with either about 0.1% to about 5.0% by weight tin or at least 0.01% by weight silver, the lead alloy anodes having a hard, adherent oxide surface layer preferably formed in situ within the electrolytic cell.
    Type: Grant
    Filed: June 30, 1980
    Date of Patent: June 9, 1981
    Inventors: Bill J. Knight, David L. Knight
  • Stable protective seed coating
    Patent number: 4272417
    Abstract: A stable, liquid seed coating composition is provided, including a binding agent, an active ingredient and a coloring agent in a liquid medium including water and a polyol.
    Type: Grant
    Filed: May 22, 1979
    Date of Patent: June 9, 1981
    Assignee: Cargill, Incorporated
    Inventors: Martin B. Barke, Rebecca A. Luebke
  • Weight transfer hitch
    Patent number: 4272098
    Abstract: A vehicle coupling comprises a linkage pivotably attachable to a first vehicle about a transverse horizontal axis, and a bearing assembly. The bearing assembly has a vertically disposed pivot bearing for connecting the vehicle coupling to a coupling member attached to a second vehicle. The vertically disposed pivot bearing has a first part fixed to the vehicle coupling and a second part fixed to the coupling member. Said first part of the vertical bearing is mounted above the linkage by support means incorporating a horizontal pivot bearing whose axis is perpendicular to the transverse horizontal axis.
    Type: Grant
    Filed: August 7, 1978
    Date of Patent: June 9, 1981
    Assignee: Weight Distribution Limited
    Inventor: Robert J. Greatbatch
  • Sustained release ophthalmic drug dosage
    Patent number: 4271143
    Abstract: The present invention is directed to an aqueous dispersion of an ophthalmic drug and a high molecular weight polymer which forms a highly viscous gel and can be used to prolong the duration of activity of the ophthalmic drug when the gel is applied into the conjunctival sac of the eye. The ophthalmic drug-containing gel composition has prolonged retention time in the eye and remains in contact with the surface of the eye for an extended period of time.
    Type: Grant
    Filed: May 9, 1979
    Date of Patent: June 2, 1981
    Assignee: Alcon Laboratories, Inc.
    Inventors: Ronald D. Schoenwald, Robert E. Roehrs
  • Mechanical compression plasma device
    Patent number: 4269658
    Abstract: Apparatus for producing a pinched plasma at high kinetic energy levels which includes an elongated containment means having a generally cylindrically shaped bore defining a reservoir, an electrically conductive liquid within the bore and means for rotating the liquid to create centrifugal force sufficient to create a cylindrical space generally along the axis of the bore, means for creating a plasma within the cylindrical space, means for applying a magnetic field the length of the bore and means for mechanically reducing the diameter of the bore and cylindrical space to compress the magnetic field to provide a pinch effect on the plasma.
    Type: Grant
    Filed: February 14, 1977
    Date of Patent: May 26, 1981
    Assignee: General Atomic Company
    Inventor: Tihiro Ohkawa
  • Method of microtomy utilizing vitreous carbon blade
    Patent number: 4269092
    Abstract: Methods and apparatus for microtomy utilizing a vitreous carbon knife element having particular properties. The knife element may desirably be rendered hydrophilic along at least one surface to facilitate cleaved sample processing, and provides for economical, high quality cleaving of multiple tissue samples.
    Type: Grant
    Filed: July 11, 1979
    Date of Patent: May 26, 1981
    Assignee: Dale R. Disharoon
    Inventor: Dale R. Disharoon
  • Nuclear fuel particles
    Patent number: 4267019
    Abstract: Coated nuclear fuel particles are made by first pyrolytically depositing low density carbon onto fuel cores and thereafter depositing a fission-product retentive, higher density exterior coating. In the improvement, cores of uranium, thorium or plutonium oxides are coated by co-depositing silicon carbide or zirconium carbide along with the low density pyrocarbon to create a uniform dispersion. Silicon or zirconium is deposited in an amount equal to at least about one atom for each fission anticipated during the fuel lifetime.
    Type: Grant
    Filed: May 10, 1978
    Date of Patent: May 12, 1981
    Assignee: General Atomic Company
    Inventors: James L. Kaae, George H. Reynolds, Stewart A. Sterling, Ling Yang
  • Apparatus for the preparation of blood samples for automated analysis
    Patent number: 4266505
    Abstract: An apparatus for preparing blood samples containing red blood cells for automated analysis wherein the blood sample on a slide is spun to create a monolayer of randomly distributed red blood cells. To inhibit cell morphology distortions from occurring during drying, the morphologies of the cells contained in the monolayer are preserved by a fixing agent after monolayer preparation but prior to drying when such distortions would otherwise develop. The method and apparatus are particularly useful for fixing red blood cells to prevent loss of or deformation of a central pallor which would be detrimental to a subsequent automated analysis.
    Type: Grant
    Filed: June 25, 1979
    Date of Patent: May 12, 1981
    Assignee: Rush-Presbyterian-St. Luke Medical Center
    Inventor: James W. Bacus
  • Implantable infusion device
    Patent number: 4265241
    Abstract: Multiple embodiments of an implantable infusion device for delivering precisely regulated dosages of drugs are disclosed, each device including reservoir means for containing the drug, catheter means for delivering the drug to the body and an actuating means which is responsive to a signal applied externally of the body for initiating delivery of a precisely regulated dosage. In one embodiment, the device is implanted subcutaneously to permit actuation by a solenoid driven element responsive to coded telemetry signal applied through the skin. In additional embodiments, the reservoir is pressurized for example, by means of vapor pressure or a mechanical spring, the drug under pressure in the reservoir being released in response to an externally applied signal.
    Type: Grant
    Filed: February 28, 1979
    Date of Patent: May 5, 1981
    Assignee: Andros Incorporated
    Inventors: Peer M. Portner, Jal S. Jassawalla
  • Method and apparatus for high beta doublets and multiplets
    Patent number: 4264413
    Abstract: Method and apparatus for initially producing a sharp boundaried theta-pinch plasma, and subsequently relaxing the current sheath of the plasma to provide a diffuse-pinch plasma, in which the diffuse pinch plasma has a doublet or higher multiplet magnetic confinement configuration with one or more internal separatrices, and in which the initially formed, sharp-boundaried plasma is provided with a current sheath having a contour corresponding to a flux surface of the doublet or multiplet configuration.
    Type: Grant
    Filed: December 22, 1976
    Date of Patent: April 28, 1981
    Assignee: General Atomic Company
    Inventor: Tihiro Ohkawa
  • Pinball game cabinet
    Patent number: D259350
    Type: Grant
    Filed: December 11, 1978
    Date of Patent: May 26, 1981
    Assignee: Bally Manufacturing Corporation
    Inventors: Edward L. Stulik, Charles W. Pelly
  • Power plant secondary coolant circuit
    Patent number: RE30630
    Abstract: In one embodiment, a closed cycle gas turbine system employs a precooler for cooling the gas prior to compression. A closed loop coolant circuit for the precooler includes a primary heat exchanger. A secondary heat exchanger is provided which may be employed during periods of peak demand on the turbine system to provide additional cooling for the coolant in the closed loop coolant circuit for the precooler. The secondary heat exchanger may also be employed to transfer heat in the reverse direction during periods of time in which the primary heat exchanger is operating at high effectiveness to provide storage of a fluid at low temperature to enhance operation in the initially described mode. In another embodiment, a similar coolant circuit operates in conjunction with a condenser for a steam power electrical generating facility.
    Type: Grant
    Filed: December 12, 1979
    Date of Patent: June 2, 1981
    Assignee: General Atomic Company
    Inventors: David C. Morse, Daniel L. Vrable