Patents by Inventor Leland L. Cooper

Leland L. Cooper 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).

  • Ceramic insulator for supporting a ribbon-type heating element
    Patent number: 3935376
    Abstract: A ceramic insulator having sidewalls, a front wall and a back wall with an outwardly extending mounting shoulder at the upper end of the front and back walls; a passageway extending between the sidewalls of the insulator to form an open interior portion within the insulator which receives a ribbon heating element and a slot in the front wall connecting with the open interior portion of the insulator for insertion of a ribbon heating element into the open interior portion; a bearing surface within the open interior portion to support a ribbon heating element; and an elongated radiused rib extending outwardly from each sidewall below the bearing surface to provide curved contact surfaces for a ribbon heating element.
    Type: Grant
    Filed: December 18, 1974
    Date of Patent: January 27, 1976
    Assignee: Du-Co Ceramics Company
    Inventors: Leland L. Cooper, Darl L. Beer