Patents by Inventor Reginald T. Williams

Reginald T. Williams 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).

  • Temperature-responsive valve
    Patent number: 4227646
    Abstract: A valve which opens and closes according to the temperature of the fluid passing through it has a fluid-controlling valve member consisting of a helix of a shape memory effect material having an elastic modulus which varies significantly with temperature in a reversible manner. At relatively low fluid temperature, the turns of the helix are closely compacted and obstruct the flow, while at relatively high fluid temperature, the turns are expanded and allow flow of fluid between them.
    Type: Grant
    Filed: November 30, 1978
    Date of Patent: October 14, 1980
    Assignee: Delta Materials Research Limited
    Inventors: William B. Hart, Reginald T. Williams
  • Temperature-responsive actuator
    Patent number: 4191053
    Abstract: A differential temperature detector comprises two springs made of a shape memory effect alloy. The springs are oppositely stressed and are coupled together in stressed condition. When the springs are subject to the same temperature, no movement occurs when that temperature changes, but when the springs are subject to different temperatures, movement occurs dependent on the temperature difference.
    Type: Grant
    Filed: November 30, 1978
    Date of Patent: March 4, 1980
    Assignee: Delta Materials Research Limited
    Inventors: William B. Hart, Reginald T. Williams