Patents by Inventor Darrell Ballantyne Copeman

Darrell Ballantyne Copeman 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).

  • Winches
    Patent number: 7261277
    Abstract: A winch assembly (38) comprising a winch (10) having a winch spool (23), an hydraulic drive motor (15), a clutch (17) for directly coupling the drive motor (15) to the winch spool (23) to effect rotation of the winch spool (23) by the drive motor (15), an hydraulic power pack (39) having an hydraulic pump (40) driven by an electric motor (42) for supplying hydraulic fluid to the winch drive motor (15) via a valve assembly (45) and a controller (43) for controlling operation of the hydraulic power pack (39) and the valve assembly (45) to control the supply of hydraulic fluid from the hydraulic power pack (39) to the winch drive motor (15).
    Type: Grant
    Filed: October 16, 2003
    Date of Patent: August 28, 2007
    Assignee: Varsitor Corporation Pty Ltd
    Inventor: Darrell Ballantyne Copeman