The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 29, 1984
Filed:
Jun. 14, 1982
Leon G Barry, Shelby, NC (US);
Willis E Rieman, Shelby, NC (US);
Fasco Controls Corporation, Shelby, NC (US);
Abstract
Two wire leads project from opposite ends of a dielectric housing having a sealed chamber containing a fusible metal alloy link, which operatively connects the wire leads electrically to one another. A flexible, pre-loaded, dielectric spring element in the chamber engages and exerts upon the link a predetermined stress, which is operative to cause the link suddenly to fail and interrupt the connection between the leads, when the ambient temperature of the link exceeds a predetermined temperature range. In one embodiment the two wire leads project into the chamber and have spaced, confronting ends interconnected by the link, one side of which is held under compressive stress by the spring element. In a second embodiment a sinuous spring element is formed on one end of one lead, and extends into the chamber where its free end is soldered under tension to one wall of the chamber in electrical contact with the second lead wire, so that when the link melts the tensioned spring element is disconnected from the second lead wire.