Patents by Inventor John R. Killen

John R. Killen 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 snubber for grapple equipped hydraulic fluid supply system
    Patent number: 5096247
    Abstract: A hydraulic supply system for a snubber including spaced check valves in the snubber housing supply passage and a relief passage connected to the supply passage between the check valves.
    Type: Grant
    Filed: January 16, 1991
    Date of Patent: March 17, 1992
    Assignee: ESCO Corporation
    Inventor: John R. Killen