Patents by Inventor George Carruthers

George Carruthers 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).

  • Low vibration saw chain
    Patent number: 7293491
    Abstract: A saw chain is provided that has a plurality of cutter links coupled to an opposing tie strap, where the cutter link has a portion that protrudes past the tie strap to enable pivotal movement of the cutter link toward a central longitudinal axis of a guide bar.
    Type: Grant
    Filed: October 21, 2005
    Date of Patent: November 13, 2007
    Assignee: Blount, Inc.
    Inventors: Mike Harfst, Arlan Way, Chris Seigneur, Sandra Caruthers, legal representative, George Carruthers, deceased
  • Low vibration saw chain
    Publication number: 20070089586
    Abstract: A saw chain is provided that has a plurality of cutter links coupled to an opposing tie strap, where the cutter link has a portion that protrudes past the tie strap to enable pivotal movement of the cutter link toward a central longitudinal axis of a guide bar.
    Type: Application
    Filed: October 21, 2005
    Publication date: April 26, 2007
    Inventors: Mike Harfst, Arlan Way, Chris Seigneur, George Carruthers
  • Traction force adjustment apparatus
    Patent number: 4429692
    Abstract: Apparatus for controlling traction force applied to a patient via a traction cord includes a lever mounted for rotation about a pivot, with the traction cord connected to the lever at a position on the lever remote from the pivot, a piston within a cylinder and movable in response to fluid pressure thereagainst in a direction generally transverse to the lever, a piston rod extending from the piston and journaled on the lever for movement therealong in response to piston movement and a hand screw connected to the piston rod intermediate the piston and the lever for displacing the piston rod along the lever while hydraulic pressure is applied to the piston.
    Type: Grant
    Filed: May 29, 1981
    Date of Patent: February 7, 1984
    Inventor: George A. Carruthers