Patents by Inventor Richard F. Anderl

Richard F. Anderl 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).

  • Method of making electric appliance with intermittently staked sheathed heating element
    Patent number: 4115918
    Abstract: The underside of the bottom wall of an electric cooker contains a sheathed electric heater element intermittently staked and keyed to the sides and base of a receiving channel to control and confine growth and resist twisting movement of the element therein during heating.
    Type: Grant
    Filed: June 15, 1977
    Date of Patent: September 26, 1978
    Assignee: National Presto Industries, Inc.
    Inventors: Richard F. Anderl, Lawrence J. Tienor
  • Electric appliance with intermittently staked sheathed heating element
    Patent number: 4052590
    Abstract: The underside of the bottom wall of an electric cooker contains a sheathed electric heater element intermittently staked and keyed to the sides and base of a receiving channel to control and confine growth and resist twisting movement of the element therein during heating.
    Type: Grant
    Filed: October 28, 1976
    Date of Patent: October 4, 1977
    Assignee: National Presto Industries, Inc.
    Inventors: Richard F. Anderl, Lawrence J. Tienor