Patents by Inventor Hollis L. Randolph

Hollis L. Randolph 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).

  • Elongated snap-acting bimetal element
    Patent number: 4090163
    Abstract: An elongated bimetal member has a transverse curvature opposing temperature warp and a longitudinal curvature aiding temperature warp. The transverse curvature maintains the member straight in a longitudinal direction until the sum of the longitudinal temperature warp forces and the bias of the longitudinal curvature exceed the retaining forces of the transverse curvature.
    Type: Grant
    Filed: December 5, 1975
    Date of Patent: May 16, 1978
    Assignee: Robertshaw Controls Company
    Inventors: Harold A. McIntosh, Hollis L. Randolph, Bradford N. Hull
  • Electric sequencer and electric heating system
    Patent number: 3976966
    Abstract: An electrical sequencing relay has an elongated bimetal member with a transverse curvature opposing temperature warp and maintaining the member straight in a longitudinal direction until longitudinal temperature warp forces exceeds the retaining forces of the transverse curvature. A slidable insulative operator is engaged by a free end of the bimetal member to operate an electrical switch when the bimetal member abruptly changes its longitudinal curvature.
    Type: Grant
    Filed: August 6, 1974
    Date of Patent: August 24, 1976
    Assignee: Robertshaw Controls Company
    Inventors: Harold A. McIntosh, Hollis L. Randolph, Bradford N. Hull