Patents by Inventor John Roy Corwin

John Roy Corwin 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).

  • Planetary reduction drive unit
    Patent number: 4040312
    Abstract: A reduction drive unit, such as a wheel hub of the type including a fluid motor operable to rotate a shaft, a sun gear engaging the shaft, a planetary gear set engaging the sun gear, and a ring gear driven by the planetary gears to drive a rotating hub. The rotating hub includes a secondary hub portion surrounding the housing of the fluid motor, with a bearing set and an oil seal disposed between the motor housing and second hub portion. The oil seal has a large enough diameter, relative to the bearing set and adjacent portions of the motor housing and hub portion, that the motor housing may be removed from within the hub without damaging the oil seal.
    Type: Grant
    Filed: October 29, 1974
    Date of Patent: August 9, 1977
    Assignee: Eaton Corporation
    Inventors: Harold B. Tappan, John Roy Corwin