Patents by Inventor David J. Picton

David J. Picton 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).

  • Safety valve
    Patent number: 4827962
    Abstract: A hot water system has a aperture in the hot water line normally blocked by a liquid and gas filled vial which is sealed against the aperture to close it off. However, when hot water in the system reaches a predetermined temperature the expansion of the liquid in the vial fractures it, unblocking the aperture and allowing hot water to escape from the hot water line. Cold water coming into the cylinder will prevent any further temperature rise.
    Type: Grant
    Filed: April 27, 1988
    Date of Patent: May 9, 1989
    Inventor: David J. Picton
  • Pipe connecting device
    Patent number: 4726612
    Abstract: A method and pipe connecting piece for connecting a pipe to a fluid port, such as another pipe. The pipe connecting piece has an end portion for insertion into the bore of a pipe-end, an intermediate portion of larger diameter than the end portion, an attachment means for attaching the connecting piece to a fluid port, and a sleeve.
    Type: Grant
    Filed: September 9, 1986
    Date of Patent: February 23, 1988
    Inventor: David J. Picton