Temperature Patents (Class 137/79)
With additional diverse control (Class 137/80)
  • Viscous fluid clutch
    Patent number: 3949849
    Abstract: A temperature-responsive shear drive-type fan clutch including a bourdon tube arrangement for actuating the valve plate controlling flow of shear drive fluid from the reservoir chamber to the working chamber, and external chamber means containing a suitable thermal-sensitive expanding fluid adapted to cause the bourdon tube to straighten in response to increased ambient temperature.
    Type: Grant
    Filed: November 18, 1974
    Date of Patent: April 13, 1976
    Assignee: General Motors Corporation
    Inventor: Dale F. Hammer
  • Thermally operated valve utilizing gas adsorbent material
    Patent number: 3937439
    Abstract: A thermally operated valve utilizes a member which is moved in accordance with the pressure of a gas within a chamber containing an adsorbent carbon material formed from a compound of carbon and a non-carbon component wherein the non-carbon component has been removed leaving a porous structure with cavities of sufficient size to receive and adsorb the gas.
    Type: Grant
    Filed: November 14, 1973
    Date of Patent: February 10, 1976
    Assignee: Robertshaw Controls Company
    Inventors: Hugh J. Tyler, Denis G. Wolfe