Patents by Inventor John Larson

John Larson 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: 5845998
    Abstract: A ball bearing assembly includes a polymer outer bearing ring molded over and partially enclosing a metal annular outer raceway. The metal annular outer raceway may be economically formed from sheet metal or wire. The polymer outer bearing ring may be mounted within a metal housing to provide support and/or self-alignment capability.
    Type: Grant
    Filed: November 27, 1996
    Date of Patent: December 8, 1998
    Assignee: The Torrington Company
    Inventors: John A. Larson, Maksimilijan Godec, Walter P. Waskiewicz
  • Patent number: 5773434
    Abstract: Psychotic symptoms are treated by the administration of drugs which amplify the ability of natural stimulators of AMPA receptors to enhance the mediation of excitatory synaptic response. What is previously known about the activity and effectiveness of these drugs is unrelated to the etiology of psychotic symptoms. The invention finds particular utility in the treatment of schizophrenia.
    Type: Grant
    Filed: August 30, 1995
    Date of Patent: June 30, 1998
    Assignees: Gary A. Rogers, The Regents of the University of California
    Inventors: John Larson, Gary Lynch, Gary A. Rogers
  • Patent number: 5630671
    Abstract: An annular collar includes a first clamping surface to be positioned radially outwardly of a surface of a bearing inner ring. The annular collar is made of a thermoelastic material such that an increase in temperature decreases the circumference of the annular collar and causes the first clamping surface to clamp against the surface of the bearing inner ring. The thermoelastic material may be a shape memory alloy or a polymer.
    Type: Grant
    Filed: August 31, 1995
    Date of Patent: May 20, 1997
    Assignee: The Torrington Company
    Inventor: John A. Larson
  • Patent number: 5503042
    Abstract: An antifriction force transmission, especially useful in torque wrenches comprises a freely rotatable cylindrical roller, opposed interface reaction surfaces in cooperative relation with the roller, and the roller and the reaction surfaces cooperating for effecting relative separating movement of the reaction surfaces when at least one of the reaction surfaces is caused to move transversely relative to the other of the reaction surfaces.
    Type: Grant
    Filed: November 16, 1993
    Date of Patent: April 2, 1996
    Assignee: Precision Instruments, Inc.
    Inventors: John A. Larson, Talmage O. Green, John K. Larson
  • Patent number: 5501319
    Abstract: The present invention provides a conveyor belt for traveling along both straight and laterally curved paths. A plurality of rods extend across the belt and are pivotally connected together by tractive links which are at least longitudinally expandable. The orientation of one edge link is reversed such that the terminal end thereof leads in the direction of travel of the belt in order to prevent damage to the links and/or the cage drive system when the belt is driven by the cage drive in a spiral system.
    Type: Grant
    Filed: June 21, 1994
    Date of Patent: March 26, 1996
    Assignees: Ashworth Bros., Inc., Northfield Freezing Systems, Inc.
    Inventors: John Larson, Jack R. Raum
  • Patent number: 5482383
    Abstract: There is disclosed a bearing for mounting on a multi-sided shaft having an outer race and an inner race coaxial with and rotatable relative to the outer race. The inner race is formed with a central bore having a plurality of internal corners which accommodate a multi-sided shaft. The central bore is preferably adapted to accommodate hexagonal and square shafts. The central bore has at least one circumferential groove in the bore and an elastomeric ring mounted into the groove. The grooves are formed at such depth that the elastomeric ring is exposed at the internal corners of the central bore whereby when the bearing is mounted the elastomeric material will contact the shaft and dampen the relative motion between the bearing and the shaft.
    Type: Grant
    Filed: December 16, 1994
    Date of Patent: January 9, 1996
    Assignee: The Torrington Company
    Inventors: Michael A. Gantt, John A. Larson
  • Patent number: 5468074
    Abstract: A bearing assembly has a stationary housing with a bore with a constant inside diameter. The non-metallic or powdered metal outer assembly is fixedly retained in the housing. A non-metallic or powdered metal inner assembly ring is slidably retained in the outer assembly ring. A ball bearing is retained by the inner assembly ring.
    Type: Grant
    Filed: October 31, 1994
    Date of Patent: November 21, 1995
    Assignee: The Torrington Company
    Inventors: Maksimilijan Godec, John A. Larson, Walter P. Waskiewicz
  • Patent number: 5468308
    Abstract: A bearing blank is cast or machined of cast iron to a configuration near a final shape of a desired bearing element. A first surface of the bearing blank, corresponding to a sliding surface of the desired bearing element, is remelted while other portions of the bearing blank remain in a solid state. The remelted first surface is quenched such that fine particles of iron carbide precipitate in a remelted zone having an increased hardness and a decreased presence of graphite particles. A bearing element having a core portion composed of cast iron and an integral first surface portion including a precipitate of fine iron carbide particles, and having greater hardness and lesser incidence of graphite particles than the core portion, is also described.
    Type: Grant
    Filed: August 22, 1994
    Date of Patent: November 21, 1995
    Assignee: The Torrington Company
    Inventors: Joseph F. Braza, John A. Larson
  • Patent number: 5440286
    Abstract: A transformer in which the primary coil and the secondary coil are insulated from the iron laminations which form part of its flux paths by insulated covers which snap-on to the primary and secondary coils.
    Type: Grant
    Filed: March 8, 1994
    Date of Patent: August 8, 1995
    Assignee: North American Philips Corporation
    Inventors: Henry Pikul, Joseph S. Droho, John A. Larson, Dale C. McClurg
  • Patent number: 5434025
    Abstract: A continuous method for making starting, lighting and ignition lead-acid battery positive plates and the resulting battery is disclosed which utilizes a direct cast alloy strip wherein the alloy consists essentially of lead, from about 0.02 to 0.05% calcium, from about 0.3 to about 0.5% tin, and from about 0.02 to 0.05% silver, the percentages being based upon the weight of the alloy strip, as well as related alloys utilizing calcium and strontium or strontium in place of calcium.
    Type: Grant
    Filed: October 29, 1993
    Date of Patent: July 18, 1995
    Assignee: GNB Battery Technologies Inc.
    Inventors: Purushothama Rao, Thomas F. Uhlemann, John Larson, Steven R. Larsen
  • Patent number: 5138295
    Abstract: A transformer in which the tops and bottoms of both the primary and secondary coils are insulated from the magnetic circuit by substantially flat plate plastic insulators adjacent both the top and bottom of both coils.
    Type: Grant
    Filed: October 17, 1991
    Date of Patent: August 11, 1992
    Assignee: North American Philips Corporation
    Inventors: John A. Larson, Henry Pikul
  • Patent number: 5040221
    Abstract: A loudspeaker driver has a plastic basket having front and rear portions. The front portion is formed with six radial ribs extending between a central motor cup support and an annular rim. A cup-shaped front pole piece is molded into the pole support and formed with an axial groove for accommodating an axial lead extending from the front end of a voice coil that moves axially in a gap between the circumferential wall of the front pole plate and a circular rear pole plate and circular disk neodymium disk magnet sandwiched between the rear pole plate and the closed end of the front pole plate. Flat tinsel leads are crimped to ends of the voice coil and brought out through slits in the cone to terminals in opposite sides of the rear portion of the basket. The circumferential edge of the cone is clamped between the front and rear portions of the basket and ultrasonically bonded to an annular surface on the rear of the front portion.
    Type: Grant
    Filed: November 15, 1985
    Date of Patent: August 13, 1991
    Assignee: Bose Corporation
    Inventors: Robert Edwards, John Larson, Brandon B. Westley
  • Patent number: 4793875
    Abstract: Disclosed is an abrasion corrosion resistant casting alloy which is readily machinable and of an approximately 50/50 mixture of austenite and ferrite obtained by uniquely heat treating a new thirty percent (30%) chromium, five percent (5%) manganese, three percent (3%) silicon, two percent (2%) molybdenum, one and one half percent (11/2%) copper plus additions of titanium, vanadium, carbon and nitrogen.
    Type: Grant
    Filed: July 1, 1987
    Date of Patent: December 27, 1988
    Assignee: Ingersoll-Rand Company
    Inventor: John A. Larson
  • Patent number: 4772793
    Abstract: An improved circuit is provided for application to a radiation survey meter that uses a detector that is subject to dead time. The circuit compensates for dead time over a wide range of count rates by producing a dead-time pulse for each detected event, a live-time pulse that spans the interval between dead-time pulses, and circuits that average the value of these pulses over time. The logarithm of each of these values is obtained and the logarithms are subtracted to provide a signal that is proportional to a count rate that is corrected for the effects of dead time. The circuit produces a meter indication and is also capable of producing an audible indication of detected events.
    Type: Grant
    Filed: October 5, 1987
    Date of Patent: September 20, 1988
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: John A. Larson, Frederick P. Krueger
  • Patent number: 4727569
    Abstract: Telephone apparatus mounted on an airplane food and beverage tray which is pivotable from a storage position nearly flush with the back of a seat of an airplane to a position of use, and includes a telephone handset that in a storage position in a tray recess is substantially flush with the surface of the tray that the recess opens through, the handset including a microphone portion and a combination credit card reader and speaker portion resiliently urged to an inclined condition relative to the microphone portion, latch mechanism to releasably retain the handset in the tray recess, a reel mounted in the tray that is resiliently retained in a datum position that the telephone cord connected to the handset is tightly wound and the second telephone cord that is electrically connected in the reel to the first cord is loosely wound, the second cord being connected to a terminal on a wall of the airplane which in turn is electrically connected through a computer to the primary telephone transmitter.
    Type: Grant
    Filed: February 18, 1986
    Date of Patent: February 23, 1988
    Assignee: Wolfgang A. Kutrieb
    Inventors: Wolfgang A. Kutrieb, John M. Kurschner, Alan E. Dobrowolski, John A. Larson, Scott L. Robinson
  • Patent number: 4702887
    Abstract: A corrosion and wear resistant nickel based alloy having unique high molybdenum content with additions of bismuth and tin or bismuth, tin and antimony dispersed as second phase particles. The resulting alloy is particularly suited for wear ring applications in pumps for corrosive fluids.
    Type: Grant
    Filed: February 27, 1986
    Date of Patent: October 27, 1987
    Assignee: Ingersoll-Rand Company
    Inventor: John A. Larson
  • Patent number: 4405389
    Abstract: An austenitic stainless steel casting alloy which exhibits superior corrosion resistance. The alloy contains a nominal 10 percent ferrite which exhibits an extremely high level of pitting and crevice corrosion resistance resulting from nitrogen additions in a proper combination of nominal 21 percent chromium, 12 percent nickel, 4 percent molybdenum and manganese content below 0.5 percent. To provide a required degree of solubility of nitrogen and to tie up the carbon, a nominal 0.15 percent of vanadium is added.
    Type: Grant
    Filed: October 21, 1982
    Date of Patent: September 20, 1983
    Assignee: Ingersoll-Rand Company
    Inventor: John A. Larson
  • Patent number: 4400113
    Abstract: The friction rock stabilizer comprises an elongate element for insertion into an earth structure bore, for stabilizing the earth structure, which has a sheath rendering the stabilizer impervious to chemical attack and, hence, corrosion-resistant. The bore surface isolating method, in an embodiment thereof, comprises interposing a protective or isolating sleeve or lining between the stabilizer and the earth structure bore. The protective or isolating lining provides two benefits: it facilitates movement of the stabilizer into frictional engagement with the bore, by isolating the stabilizer from the rough surface of the bore wall, and also provides a corrosion-resistant sheath to protect the stabilizer, in the bore, from alkaline or acidic mine water, corrosive minerals, and the like.
    Type: Grant
    Filed: June 13, 1980
    Date of Patent: August 23, 1983
    Assignee: Ingersol-Rand Company
    Inventors: Walter M. Chaiko, John A. Larson
  • Patent number: 4326885
    Abstract: A cavitation resistant, low carbon 12% chromium steel alloy utilizing a nominal 1.5% copper addition which imparts strength by a precipitation reaction. The alloy exhibits a higher strength and hardness for a given carbon content and conversely is less susceptible to casting and welding cracks and stress corrosion cracking.
    Type: Grant
    Filed: June 16, 1980
    Date of Patent: April 27, 1982
    Assignee: Ingersoll-Rand Company
    Inventors: John A. Larson, Robert B. Fischer
  • Patent number: D254911
    Type: Grant
    Filed: September 19, 1977
    Date of Patent: May 6, 1980
    Inventor: John A. Larson