Patents by Inventor David E. Burley

David E. Burley 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: 5273333
    Abstract: A load hook assembly includes an upright support structure adapted for cable attachment to a lifting instrumentality such as a helicopter. A jaw assembly, carried by the support structure, has multiple, movable jaws which open and close relative a centrally disposed, fixed jaw. Each movable jaw is independently operated by an air cylinder coupled to a jaw associated toggle linkage. The movable jaws and the central, fixed jaw are spaced from one another when closed to permit lateral insertion of a ferrule on a load engaging choker cable. Each movable jaw is controlled in a remote manner by an operator to permit selective release of one or both loads. A method of load transport is also disclosed.
    Type: Grant
    Filed: February 22, 1993
    Date of Patent: December 28, 1993
    Assignee: Columbia Helicopters, Inc.
    Inventors: Barry D. Hatfield, David E. Burley, Steven L. Ingalls