Patents by Inventor Jeffery A. Crosser

Jeffery A. Crosser 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).

  • Patent number: 5025626
    Abstract: Cushioned swing circuits sometimes have a restricted passage between the motor conduits to allow the implement controlled by the swing circuit to coast to a stop. However, opening and closing of the restricted passage was manually controlled, thereby requiring an additional manipulative step by the operator. The present cushioned swing circuit includes a cushion valve moveable to an open position to establish communication through vent line means when a pressure differential greater than a predetermined level is generated in one of the motor conduits connecting a directional control valve to a hydraulic motor. The cushion valve is retained in the open position for a predetermined limited time after the pressure differential drops below the predetermined level so that the inertia generated pressure in the circuit is dissipated through the vent line means.
    Type: Grant
    Filed: August 31, 1989
    Date of Patent: June 25, 1991
    Assignee: Caterpillar Inc.
    Inventors: Jeffery A. Crosser, Randall L. Mooberry, James D. Rinaldo, Jose M. Salazar-Vior