Patents by Inventor James A. Joy

James A. Joy 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).

  • Passive sensor technology incorporating energy storage mechanism
    Patent number: 7236092
    Abstract: A passive sensor system having the capacity to respond to a variety of stimuli in the form of pulses of a specified frequency. The system includes a sensor operatively connected to an LC circuit characterized by a quality factor (Q) of less than 200, and a high Q resonator having a Q greater than 200.
    Type: Grant
    Filed: August 23, 2004
    Date of Patent: June 26, 2007
    Inventor: James A. Joy
  • Linkage arrangement for a work implement
    Patent number: 5611656
    Abstract: A linkage arrangement for guiding and manipulating a work implement, such as a bucket, includes a V-shaped guide link and a curved implement link. A plurality of pin joints connect the implement link to the bucket, the guide link, and to a fluid cylinder. The fluid cylinder, the guide link, and the implement link cooperate to rotate the bucket between open and closed positions, for digging and carrying materials. The linkage arrangement provides high forces for digging and bucket rotation and desirable lower rotational velocity for clamping object in the fully closed position.
    Type: Grant
    Filed: August 31, 1995
    Date of Patent: March 18, 1997
    Assignee: Caterpillar Inc.
    Inventors: James G. Davis, Jeffrey A. Deneve, James A. Joy