Patents by Inventor David Anthony Whitbread

David Anthony Whitbread 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).

  • Clamps
    Patent number: 4078781
    Abstract: An adjustable clamp has its main bar formed from flat metal strip with serrations in one edge and a fixed arm may be formed by a bent-around end of this strip. The moving arm can be formed from two flat stampings from strip and a fine adjustment is provided by a screw on this arm, engaging the non-serrated edge of the bar, while the coarse adjustment is provided by a bush or pin between the stampings engaging the serrated edge.
    Type: Grant
    Filed: December 7, 1976
    Date of Patent: March 14, 1978
    Assignee: HMC-Brauer Limited
    Inventors: Ian Bruce Fraser, David Anthony Whitbread