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:
Dec. 13, 2016
Filed:
Oct. 15, 2014
Schneider Electric Usa, Inc., Palatine, IL (US);
John R. Ruess, Farmington, UT (US);
Schneider Electric USA, Inc., Andover, MA (US);
Abstract
A surge protection device comprises a gas-tight container formed by a ceramic housing and ceramic lid surrounding an uncoated MOV device, to contain explosive gases and scattered solids produced during a thermal runaway. There is no coating on the MOV device, such as an organic polymer coating. Instead, the ceramic housing has two gas-tight chambers separated by a ceramic partition. The MOV device is located in a first gas-tight chamber and has an electrode that passes into the second gas-tight chamber and terminates in a fixed contact. A thermal cutoff device of simple construction, is located in the second gas-tight chamber, having a spring connector terminating in a moveable contact that is bonded to the electrode by a low melting point solder. The ceramic partition shields the thermal cutoff device from being fouled by debris scattered from destruction of the MOV device's metal oxide core during a thermal runaway.