Patents by Inventor Darrell L. Trowbridge

Darrell L. Trowbridge 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).

  • Twin lever control actuator
    Patent number: 4367659
    Abstract: A twin lever control actuator (10) for operating push-pull cables (17) has two sets of two pulleys (12, 13), one set on each side of a control body (11). The cable cores (18) are attached to the pulley cables (15) on the straight run of pulley cable between the pulleys to provide linear actuation of the push-pull cables (17). A ball detent (52) or a friction pad (58) can be used to provide an adjustable control load.
    Type: Grant
    Filed: June 30, 1980
    Date of Patent: January 11, 1983
    Assignee: Brunswick Corporation
    Inventors: Kerry Karpathian, Darrell L. Trowbridge
  • Variable response snowmobile suspension system
    Patent number: 3933213
    Abstract: The invention is a suspension assembly for a loop drive track of a vehicle such as a snowmobile. Individual forward and aft suspension linkages incorporating coaxial compression spring and shock absorber units, employ rolling contact with a track support slide rail or bogey wheel assembly to provide programmed spring and shock reaction over the full range of vertical displacement of the track.
    Type: Grant
    Filed: April 11, 1974
    Date of Patent: January 20, 1976
    Assignee: Brunswick Corporation
    Inventor: Darrell L. Trowbridge