Patents by Inventor John R. Jamison

John R. Jamison 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: 8707605
    Abstract: A rifle construction includes an action and barrel that seat within a stock. The action is fastened to the stock with flexible fasteners that allow the action to seat properly and maintain alignment in the presence of recoil forces or other forces acting on the fasteners. The fasteners can thus compensate for forces created by misalignment during assembly, temperature changes and/or recoil without adversely affecting the zero of the firearm.
    Type: Grant
    Filed: April 9, 2008
    Date of Patent: April 29, 2014
    Inventor: John R. Jamison
  • Patent number: 8397417
    Abstract: A rifle construction includes an action and barrel that seat within a stock. Vibration-damping material, such as a foam or gel, is interposed between at least portions of the stock and action that would normally be in contact with each other. The material may be secured to the stock or metal parts as adhesively backed strips or may be sprayed or extruded. The action is fastened to the stock with flexible fasteners that allow the action to seat properly and maintain alignment in the presence of recoil forces or other forces acting on the fasteners.
    Type: Grant
    Filed: November 10, 2009
    Date of Patent: March 19, 2013
    Inventor: John R. Jamison
  • Patent number: 8015740
    Abstract: A construction for a firearm comprises an action, including a barrel, and a stock. The action is seated to the stock on a three-point bearing system comprising three bearings arranged in a triangular array. This provides for firm seating for the action and results in a more accurate firearm.
    Type: Grant
    Filed: April 22, 2009
    Date of Patent: September 13, 2011
    Inventors: John R. Jamison, Brian K. Clark
  • Publication number: 20110185618
    Abstract: A construction for a firearm comprises an action, including a barrel, and a stock. The action is seated to the stock on a three-point bearing system comprising three bearings arranged in a triangular array. This provides for firm seating for the action and results in a more accurate firearm.
    Type: Application
    Filed: April 22, 2009
    Publication date: August 4, 2011
    Inventors: John R. Jamison, Brian K. Clark
  • Publication number: 20100319232
    Abstract: A rifle construction includes an action and barrel that seat within a stock. The action is fastened to the stock with flexible fasteners that allow the action to seat properly and maintain alignment in the presence of recoil forces or other forces acting on the fasteners. The fasteners can thus compensate for forces created by misalignment during assembly, temperature changes and/or recoil without adversely affecting the zero of the firearm.
    Type: Application
    Filed: April 9, 2008
    Publication date: December 23, 2010
    Inventor: John R. Jamison
  • Publication number: 20100083551
    Abstract: A rifle construction includes an action and barrel that seat within a stock. Vibration-damping material, such as a foam or gel, is interposed between at least portions of the stock and action that would normally be in contact with each other. The material may be secured to the stock or metal parts as adhesively backed strips or may be sprayed or extruded. The action is fastened to the stock with flexible fasteners that allow the action to seat properly and maintain alignment in the presence of recoil forces or other forces acting on the fasteners.
    Type: Application
    Filed: November 10, 2009
    Publication date: April 8, 2010
    Inventor: John R. Jamison
  • Patent number: 7127836
    Abstract: A shoe and boot protecting assembly includes a foot portion with a top wall. A front wall, a first side wall and a second side wall are each integrally attached to and extend downwardly from the top wall. An ankle portion includes a forward wall that has a lower edge, and upper edge, a first lateral edge and a second lateral edge. The lower edge is integrally attached a back edge of the top wall. A first lateral wall is attached to the first lateral edge and is orientated parallel with the first side wall. A second lateral wall is attached to the second lateral edge and is orientated parallel with the second side wall. Each of a plurality of couplers is attached to the ankle and foot portions. The couplers are adapted for releasably securing the foot and ankle portions on a foot covering.
    Type: Grant
    Filed: November 15, 2004
    Date of Patent: October 31, 2006
    Inventor: John R. Jamison
  • Publication number: 20040255502
    Abstract: A short-action firearm has a chamber and bolt assembly with unique pressure, length and diametric relationships. The overall length of the chamber has a ratio to a diameter thereof, at a predetermined location on a wide portion of the chamber, of no more than about 3.5. Such diameter is at least about 0.53 inch, and the length of the wide portion of the chamber has a ratio to such diameter of no more than about 3.
    Type: Application
    Filed: December 30, 2003
    Publication date: December 23, 2004
    Inventor: John R. Jamison
  • Patent number: 6678983
    Abstract: A short-action firearm has a chamber and bolt assembly with unique pressure, length and diametric relationships. The overall length of the chamber has a ratio to a diameter thereof, at a predetermined location on a wide portion of the chamber, of no more than about 3.5. Such diameter is at least about 0.53 inch, and the length of the wide portion of the chamber has a ratio to such diameter of no more than about 3.
    Type: Grant
    Filed: February 21, 2003
    Date of Patent: January 20, 2004
    Inventor: John R. Jamison
  • Patent number: 6675717
    Abstract: A short-action firearm cartridge has unique pressure, length and diametric relationships. The overall length of the cartridge case has a ratio to a diameter thereof, at a predetermined location on a wide portion of the case, of no more than about 3.5. Such diameter is at least about 0.53 inch, and the length of the wide portion of the case has a ratio to such diameter of no more than about 3.
    Type: Grant
    Filed: February 21, 2003
    Date of Patent: January 13, 2004
    Inventor: John R. Jamison
  • Publication number: 20030136292
    Abstract: A short-action firearm has a chamber and bolt assembly with unique pressure, length and diametric relationships. The overall length of the chamber has a ratio to a diameter thereof, at a predetermined location on a wide portion of the chamber, of no more than about 3.5. Such diameter is at least about 0.53 inch, and the length of the wide portion of the chamber has a ratio to such diameter of no more than about 3.
    Type: Application
    Filed: February 21, 2003
    Publication date: July 24, 2003
    Inventor: John R. Jamison
  • Patent number: 6595138
    Abstract: A short-action firearm cartridge has unique pressure, length and diametric relationships. The overall length of the cartridge case has a ratio to a diameter thereof, at a predetermined location on a wide portion of the case, of no more than about 4.2. Such diameter is at least about 0.53 inch, and the length of the wide portion of the case has a ratio to such diameter of no more than about 3.33.
    Type: Grant
    Filed: April 4, 2002
    Date of Patent: July 22, 2003
    Inventor: John R. Jamison
  • Publication number: 20030121443
    Abstract: A short-action firearm cartridge has unique pressure, length and diametric relationships. The overall length of the cartridge case has a ratio to a diameter thereof, at a predetermined location on a wide portion of the case, of no more than about 3.5. Such diameter is at least about 0.53 inch, and the length of the wide portion of the case has a ratio to such diameter of no more than about 3.
    Type: Application
    Filed: February 21, 2003
    Publication date: July 3, 2003
    Inventor: John R. Jamison
  • Patent number: 6550174
    Abstract: A short-action firearm has a chamber and bolt assembly with unique pressure, length and diametric relationships. The overall length of the chamber has a ratio to a diameter thereof, at a predetermined location on a wide portion of the chamber, of no more than about 4.2. Such diameter is at least about 0.53 inch, and the length of the wide portion of the chamber has a ratio to such diameter of no more than about 3.33.
    Type: Grant
    Filed: November 13, 2001
    Date of Patent: April 22, 2003
    Inventor: John R. Jamison
  • Publication number: 20020117072
    Abstract: A short-action firearm cartridge has unique pressure, length and diametric relationships. The overall length of the cartridge case has a ratio to a diameter thereof, at a predetermined location on a wide portion of the case, of no more than about 4.2. Such diameter is at least about 0.53 inch, and the length of the wide portion of the case has a ratio to such diameter of no more than about 3.33.
    Type: Application
    Filed: April 4, 2002
    Publication date: August 29, 2002
    Inventor: John R. Jamison
  • Patent number: 6397718
    Abstract: A device for machining a cartridge case that has a neck comprising a circular neck wall, a mouth and a primer pocket. The device includes a gripping assembly, adapted to accept and retain a cartridge case and a neck machining assembly, positioned to engage the cartridge case from a first direction and adapted to machine the neck of the cartridge case. Additionally, a primer pocket machining assembly is positioned to engage the cartridge case from a second direction, opposed to the first direction, thereby permitting simultaneous primer pocket and neck engagement, and adapted to machine the primer pocket.
    Type: Grant
    Filed: May 11, 2000
    Date of Patent: June 4, 2002
    Inventors: John R. Jamison, Bradley R. Elder
  • Publication number: 20020035946
    Abstract: A short-action firearm has a chamber and bolt assembly with unique pressure, length and diametric relationships. The overall length of the chamber has a ratio to a diameter thereof, at a predetermined location on a wide portion of the chamber, of no more than about 4.2. Such diameter is at least about 0.53 inch, and the length of the wide portion of the chamber has a ratio to such diameter of no more than about 3.33.
    Type: Application
    Filed: November 13, 2001
    Publication date: March 28, 2002
    Inventor: John R. Jamison
  • Patent number: 6354221
    Abstract: A firearm cartridge case capable of withstanding internal gas pressures of at least about 50,000 psi has two substantially cylindrical portions of significantly different diameters interconnected by a frusto-conical shoulder portion. The case has a ratio of its overall length to its diameter, at a location 1.25 inches from its base, of no more than about 4.2, giving it an unusually short, fat profile. The base of the case has a rim with an outer diameter substantially no less than the case diameter at the aforementioned location, to facilitate reliable feeding of the cartridge from the magazine. The corresponding firearm chamber which matingly accepts the cartridge is capable of withstanding internal gas pressures of at least about 65,000 psi.
    Type: Grant
    Filed: July 29, 1999
    Date of Patent: March 12, 2002
    Inventor: John R. Jamison
  • Publication number: 20020000028
    Abstract: A device for machining a cartridge case that has a neck comprising a circular neck wall, a mouth and a primer pocket. The device includes a gripping assembly, adapted to accept and retain a cartridge case and a neck machining assembly, positioned to engage the cartridge case from a first direction and adapted to machine the neck of the cartridge case. Additionally, a primer pocket machining assembly is positioned to engage the cartridge case from a second direction, opposed to the first direction, thereby permitting simultaneous primer pocket and neck engagement, and adapted to machine the primer pocket.
    Type: Application
    Filed: May 11, 2000
    Publication date: January 3, 2002
    Inventors: John R. Jamison, Bradley R. Elder
  • Patent number: 5970879
    Abstract: A firearm cartridge case capable of withstanding internal gas pressures of at least about 50,000 psi has two substantially cylindrical portions of significantly different diameters interconnected by a frusto-conical shoulder portion. The case has a ratio of its overall length to its diameter, at a location 1.25 inches from its base, of no more than about 4.2, giving it an unusually short, fat profile. The base of the case has a rim with an outer diameter substantially no less than the case diameter at the aforementioned location, to facilitate reliable feeding of the cartridge from the magazine. The corresponding firearm chamber which matingly accepts the cartridge is capable of withstanding internal gas pressures of at least about 65,000 psi.
    Type: Grant
    Filed: April 17, 1998
    Date of Patent: October 26, 1999
    Inventor: John R. Jamison