Patents by Inventor Donald Willaughby

Donald Willaughby 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).

  • Confined space lowering and retrieving apparatus
    Patent number: 5431248
    Abstract: Apparatus for use, in conjunction with a fall arrester or load winch means, when servicing a closed vessel having a top or side manway. The apparatus being adaptable for either exterior or interior mounting having universal, flexible supporting means. The apparatus further comprising a universal bracket means for operably receiving a fall arrester or load winch, mountable in a vertical position to the manway's cover flange.
    Type: Grant
    Filed: October 25, 1993
    Date of Patent: July 11, 1995
    Inventor: Donald Willaughby