Patents by Inventor Stanley C. Askeland

Stanley C. Askeland 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).

  • Hydraulic wheelchair
    Patent number: 5158150
    Abstract: A hydraulic system for powering a vehicle for human transporation. The output of a hydraulic pump is connected to at least one hydraulic motor by a hydraulic circuit, the motor(s) being mechanically connected to drive the vehicle. The hydraulic circuit establishes the direction of fluid flow through the motor(s). The pressure drop across at least a portion of the hydraulic circuit is monitored and the flow of fluid to the circuit is regulated accordingly.
    Type: Grant
    Filed: January 24, 1992
    Date of Patent: October 27, 1992
    Assignee: Hydra-Powr, Inc.
    Inventors: Stanley C. Askeland, Constantine Kosarzecki