Kenneth C Starkey

US Patent:

39567265, May 11, 1976

Filed:

Dec 23, 1974

Appl. No.:

5/535827

Inventors:

John J. McCarthy - Bethany CT
Kenneth C. Starkey - Grove City OH

Assignee:

Cerro Corporation - New York NY

International Classification:

H01H 3776

US Classification:

337414

Abstract:

A heat detecting conductor embodied in a flat tape wherein conductive strips in an open circuit are separated, at acceptable temperatures, by thermoplastic insulating material which is adapted to melt at predetermined elevated temperatures and to permit the conductive strips to come into contact with each other, thereby closing the electric circuit and actuating an audible and/or visual alarm. The heat detecting conductor may be associated with a cable carrying one or more service lines or with a cable connected to one or more heat detecting devices, as a back-up therefor, or may be used alone.