Patents by Inventor C. Thomas

C. Thomas has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4949414
    Abstract: A low air loss patient support system includes a plurality of identical multi-chambered inflatable sacks. A restrictive flow hole connects two adjacent chambers disposed predominately to one side of the centerline of the sack, and each side is separately pressurizable under the control of a microprocessor and a plurality of pressure control valves with pressure transducers and a plurality of flow diverter valves for switching between different modes of configuring the manner in which the sacks are pressurized. The system includes a modular manifold for mounting the pressure control valves, and a modular support member for mounting the sacks via quick-disconnect couplings and having air flow channels defined therethrough. The support system effects a method of rotating or tilting the patient that depressurizes one side of the sacks while increasing the pressurization of the opposite side of the sacks.
    Type: Grant
    Filed: May 22, 1989
    Date of Patent: August 21, 1990
    Assignee: SSI Medical Services, Inc.
    Inventors: James M. C. Thomas, James R. Stolpmann, William T. Sutton, James J. Romano
  • Patent number: 4938508
    Abstract: A gate latch for use with a gate mounted for pivotal movement relative to a stationary fence includes a transversely extending latch bar secured to the gate and a latch member pivotally mounted on a mounting plate secured to the fence. In a first embodiment, a safety latch attachment includes an adapter plate configured for partial overlying attachment adjacent the latch mounting plate and having a reciprocal spring biased plunger in alignment with a transverse aperture formed through a latch frame on the mounting plate. When in a latched position, the plunger prevents the pivotal latch member from being unlatched. A pulley guided cable is connected to retract the plunger to allow the gate to be unlatched. In a second embodiment, the safety latch attachment mechanism is provided as an integral unit on a common mounting plate with the pivotal latch member.
    Type: Grant
    Filed: February 10, 1989
    Date of Patent: July 3, 1990
    Inventor: Peter C. Thomas
  • Patent number: 4907066
    Abstract: A planar interconnect using selective deposition of a refractory metal such as tungsten into oxide channels is disclosed. A layer of silicon dioxide as thick as the desired tungsten interconnect is placed on the surface of a substrate such as an integrated circuit wafer. Thereafter, a layer of silicon nitride about 100 nm thick is formed on the silicon dioxide. Channels are formed in the silicon dioxide by patterning and etching the composite dielectric layers. After the photoresist is removed, silicon or tungsten atoms at 40 KeV are implanted in the silicon dioxide channels, the silicon nitride acting as a mask. Typically, a dosage as high as 1.times.10.sup.17 cm.sup.-2 is used. The silicon or tungsten implant allows seeding of the tungsten or other retractory metal. The silicon nitride mask is selectively removed by a hot phosphoric acid solution, and a metal film is then selectively deposited to fill the channels in the silicon dioxide layer, which then forms a level of interconnects.
    Type: Grant
    Filed: February 22, 1988
    Date of Patent: March 6, 1990
    Assignee: Cornell Research Foundation, Inc.
    Inventors: David C. Thomas, S. Simon Wong
  • Patent number: 4895870
    Abstract: Spectinomycin analogs of formula I, wherein R is alkyl, are used in the treatment of gonococcal, non-gonococcal and post-gonococcal urethritis and chlamydia infections.
    Type: Grant
    Filed: November 10, 1986
    Date of Patent: January 23, 1990
    Assignee: The Upjohn Company
    Inventors: Gary E. Zurenko, James J. Vavra, David R. White, Richard C. Thomas
  • Patent number: 4895080
    Abstract: A freight pallet may be formed in a wide variety of user determined configurations by assembly of a plurality of interlocking construction units. Each of the units has a square thin support plate with a projecting rib extending along a first pair of adjacent perpendicular side edges. A complementary formed groove extends along a second pair of adjacent perpendicular side edges of the support plate. A right angle corner support member is perpendicularly attached at each corner on a bottom surface of the support plate. Each pair of adjacent corner support members are connected by a support brace. The construction units may be assembled adhesively or through thermoplastic bonding by forming portions of the projecting ribs and complementary grooves from a thermosetting plastic material.
    Type: Grant
    Filed: February 10, 1989
    Date of Patent: January 23, 1990
    Inventor: Peter C. Thomas
  • Patent number: 4872286
    Abstract: Locking mechanism for locking and unlocking a sliding-type door. The mechanism for the most part is mounted externally of the door, and includes a pivoted, frame-mounted locking member pivotable between locking and unlocking positions. A dead latch latches the locking member in its locking position. An air cylinder is actuated, first to release the dead latch, and then to shift the locking member to its unlocking position. A door-carried locking member also is provided for locking the door at a region remote from the region locked by the frame-mounted locking member.
    Type: Grant
    Filed: May 20, 1988
    Date of Patent: October 10, 1989
    Assignee: Pacific Security Systems of America, Inc.
    Inventors: Alfred J. Peirish, Theodore E. Schmidt, William C. Thomas
  • Patent number: 4857321
    Abstract: A skin ointment, comprising about twelve (12%) percent by volume mink oil; about nine (9%) percent by volume lanolin; about four (4%) percent by volume zinc stearate; about four (4%) percent by volume octylmethoxycinnamate; about four (4%) percent by volume methylgluceth--10; about four (4%) by volume peg 100 stearate; about three (3%) percent by volume cetal; about three (3%) percent by volume peanut oil; about two (2%) percent glyceral monostrearate; about two (2%) percent acetylated lanolin alcohol; about one (1%) percent spermaceti; about one (1%) percent propylene glycol; about one (1%) percent panthenol; less than one (1%) percent tocopheryl acetate; and, about forty-seven (47%) percent by volume water.
    Type: Grant
    Filed: August 26, 1988
    Date of Patent: August 15, 1989
    Inventor: William C. Thomas
  • Patent number: 4855913
    Abstract: A microprocessor-based electronic control system for a powershift transmission having at least one proportional actuator, such as a solenoid-operated proportional valve, is disclosed. The controller operates a plurality of on-off solenoid valves and the solenoid-operated proportional valve to provide operator-selected gear shifts in both forward and reverse directions having controlled clutch engagements achieved by modulation of clutch engagement pressure by the proportional valve. The key parameters associated with the gradual clutch engagement are all easily varied by the controller, most under program control during operation, to provide for optimized clutch engagments for smooth gearshifts. The key parameters include: fast-fill clutch delay, initial clutch engagement pressure, rate of increase of clutch engagement pressure, and the length of the reduced pressure clutch engagement interval.
    Type: Grant
    Filed: May 29, 1987
    Date of Patent: August 8, 1989
    Assignee: J. I. Case Company
    Inventors: Kevin L. Brekkestran, John C. Thomas
  • Patent number: 4853594
    Abstract: An electroluminescent lamp including a phosphor layer disposed between corresponding lamp electrodes that are adapted to apply an excitation potential to cause the phosphor layer to emit light, the front lamp electrode being light-transmsisive to radiation from the phosphor layer, has an improved front lamp electrode consisting of a thin layer of light-transmissive binder containing a distribution of discrete gallium-doped zinc oxide particles. A method of forming the lamp is also described.
    Type: Grant
    Filed: August 10, 1988
    Date of Patent: August 1, 1989
    Assignee: Rogers Corporation
    Inventor: Alan C. Thomas
  • Patent number: 4841678
    Abstract: A tool sharpening apparatus is set forth particularly for use in combination with grinding wheels wherein multi-adjustment and angularly displaceable supports cooperate to present a desired complex presentation of tool faces to be sharpened. Particularly a base supports a first protractor support by an associated tongue and groove arrangement wherein a second pivotal support is angularly displaceable relative to said first protractor support. A third laterally adjustable support cooperates by a further tongue and groove arrangement with said second pivotal support to secure adjustably a fourth depth adjustment support to orient a tool face relative to a grinding wheel. A fifth protractor support is secured to said fourth depth adjustment support wherein a sixth tool holder support is angularly adjustable relative to said fifth protractor support. Accordingly, any desired grinding of a secured tool may be effected.
    Type: Grant
    Filed: January 19, 1988
    Date of Patent: June 27, 1989
    Inventor: Peter C. Thomas
  • Patent number: 4836941
    Abstract: A clear brine fluid composition for use in servicing wells in the oil and gas industry comprising a solution of a zinc halide and a calcium halide in water having a density lying in the range of about 15 to about 22 ppg, a measured alkalinity lying in the range of about 0 up to about 1 normal and a measured zinc to calcium mole ratio lying in the range of about 1 to about 3.
    Type: Grant
    Filed: January 29, 1986
    Date of Patent: June 6, 1989
    Assignee: The Dow Chemical Company
    Inventor: Robert C. Thomas
  • Patent number: 4833517
    Abstract: A vertical ballistic transistor is described. Base metallic contacts of reliable thickness are deposited on a carrier depletable layer and diffuse into the base. A depletion region forms in the depletable layer. The depletion region electrically isolates the base contact from the emitter. The thickness of the depletable layer prevents the generation of usual depletion regions in the base that tend to cut off base current.
    Type: Grant
    Filed: April 27, 1987
    Date of Patent: May 23, 1989
    Assignee: International Business Machines Corporation
    Inventors: Mordehai Heiblum, Christina M. Knoedler, David C. Thomas
  • Patent number: 4793196
    Abstract: A gear coupled, counter-rotating vibratory assembly is described for producing a fine tuned accurate linear vibratory motion without any twisting force component. The assembly has two parallel shafts that extend through a gear casing with cantilevered ends extending outward from both sides of casing. Large intermeshing gears are mounted on the shafts to rotate the shafts in counter-rotating synchronized motion. One of the gears has metal teeth and the other gear has plastic teeth. Identical eccentric weights are mounted on the cantilevered shaft ends outside of the gear casing at the same angular positions to generate the linear vibratory motion. The eccentric weights on the drive shaft are offset inward of the weights on the driven shaft. The radius of each of the eccentric weights is greater than the radius of the gear but less than the diameter of the gears.
    Type: Grant
    Filed: March 24, 1987
    Date of Patent: December 27, 1988
    Assignee: Key Technology, Inc.
    Inventors: Walter L. Davis, Joseph C. Thomas
  • Patent number: 4773202
    Abstract: Method and apparatus, to be utilized by a newspaper carrier on a "vehicle route," for mechanically folding and bagging newspapers and like articles. A continuous length of heat-sealable polymeric film, wider than the newspaper or other article, is arranged along a generally horizontal feed path to form a folding station. The newspaper or like article is fed to the folding station of apparatus in parallel overlying relation to the film. A vertically reciprocal, motorized folder bar extends transversely across and above the film at a point substantially centrally located in the folding station. The folder bar is movable between an upper position above the feed path and a lower position below the feed path where there is formed a pouch of film surrounding the folded newspaper.
    Type: Grant
    Filed: July 29, 1987
    Date of Patent: September 27, 1988
    Assignee: IPI Industries, Inc.
    Inventors: Rodney D. Felts, James R. Hartsoe, Wayne C. Thomas
  • Patent number: 4755096
    Abstract: In the commercial production of licorice bites, each about 1 inch long, a group of extruded 54-inch licorice strips are lifted by a programmable controlled robot from the discharge end of a lower conveyor and deposited at the input end of an upper conveyor which carries the strips to a cutting station. The robot hand has a lower stainless steel blade for insertion under the group of licorice strips to wedge the sticky strips from a board on which they are being carried by the lower conveyor. The robot hand includes an upper bar. The bar is moved relative to the blade after insertion of the blade under the licorice strips, thereby clamping the strips between the bar and the blade. The arm of the robot then lifts the hand and clamped group of licorice strips and deposits the front ends of the strips at the input of the upper conveyor.
    Type: Grant
    Filed: October 2, 1986
    Date of Patent: July 5, 1988
    Assignee: Hershey Foods Corporation
    Inventors: Lloyd C. Leeper, C. Thomas Mullen
  • Patent number: 4746621
    Abstract: A planar interconnect using selective deposition of a refractory metal such as tungsten into oxide channels is disclosed. A layer of silicon dioxide as thick as the desired tungsten interconnect is placed on the surface of a substrate such as an integrated circuit wafer. Thereafter, a layer of silicon nitride about 100 nm thick is formed on the silicon dioxide. Channels are formed in the silicon dioxide by patterning and etching the composite dielectric layers. After the photoresist is removed, silicon or tungsten atoms at 40 KeV are implanted in the silicon dioxide channels, the silicon nitride acting as a mask. Typically, a dosage as high as 1.times.10.sup.17 cm.sup.-2 is used. The silicon or tungsten implant allows seeding of the tungsten or other refractory metal. The silicon nitride mask is selectively removed by a hot phosphoric acid solution, and a metal film is then selectively deposited to fill the channels in the silicon dioxide layer, which then forms a level of interconnects.
    Type: Grant
    Filed: December 5, 1986
    Date of Patent: May 24, 1988
    Assignee: Cornell Research Foundation, Inc.
    Inventors: David C. Thomas, S. Simon Wong
  • Patent number: 4728688
    Abstract: In two-short perfect binding of books, excellent results in terms of binding strengths, cold flow and cold crack properties, ink solvent resistance and thermal degradation susceptibility may be achieved using as a first adhesive a water based primer, e.g. a synthetic rubber latex emulsion, and as a second adhesive a hot-melt adhesive comprising a segmented monoalkene-vinyl acetate copolymer, e.g. a segmented ethylene-vinyl acetate copolymer optionally in admixture with at least one other ethylene-vinyl acetate copolymer.
    Type: Grant
    Filed: December 4, 1985
    Date of Patent: March 1, 1988
    Assignee: Swift Adhesives Limited
    Inventors: Richard E. Tizzard, George C. Thomas
  • Patent number: 4727316
    Abstract: A transformer current sensor having primary turns carrying a primary current for a superconducting coil and secondary turns only partially arranged within the primary turns. The secondary turns include an active winding disposed within the primary turns and a dummy winding which is not disposed in the primary turns and so does not experience a magnetic field due to a flow of current in the primary turns. The active and dummy windings are wound in opposite directions or connected in series-bucking relationship, and are exposed to the same ambient magnetic field. Voltages which might otherwise develop in the active and dummy windings due to ambient magnetic fields thus cancel out. The resultant voltage is purely indicative of the rate of change of current flowing in the primary turns.
    Type: Grant
    Filed: April 16, 1985
    Date of Patent: February 23, 1988
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Stewart S. Shen, C. Thomas Wilson
  • Patent number: 4720510
    Abstract: This invention relates to a process for producing phenolformaldehyde foams, also known as phenolic foams, of improved properties. The inventive feature resides in using a controlled combination of the various components in the curing reaction mixture and in controlling the temperature within the mass of the curing mixture. The process is applicable to production of block or laminated foams. Phenolic foams find increasing use in building applications where their thermal insulation and fire resistant properties are of value.
    Type: Grant
    Filed: May 21, 1985
    Date of Patent: January 19, 1988
    Assignee: BP Chemicals Limited
    Inventors: Gerald C. Marks, Kenneth C. Thomas, Per I. Quist
  • Patent number: D306512
    Type: Grant
    Filed: December 22, 1986
    Date of Patent: March 13, 1990
    Inventors: Keith C. Thomas, Raymond F. Potter