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:
Jun. 18, 2019
Filed:
Jan. 10, 2018
Littelfuse, Inc., Chicago, IL (US);
Wen Yang, Dongguan, CN;
Hailang Tang, Dongguan, CN;
Huawei Yin, Dongguan, CN;
Stephen J. Whitney, Lake Zurich, IL (US);
G. Todd Dietsch, Park Ridge, IL (US);
LITTELFUSE, INC., Chicago, IL (US);
Abstract
A circuit protection device including a housing defining a chamber and a metal oxide varistor (MOV) stack disposed within the chamber. A first spring is electrically attached at a first end to a first input terminal of the MOV stack by a solder connection and at a second end to a first input line. The first spring is biased away from the first input terminal. A second spring is electrically attached to a second input terminal of the MOV stack by a solder connection and at a second end to a second input line. The second conductive spring is biased away from the second input terminal. When an overvoltage condition occurs, heat generated by the MOV stack melts at least one of the first or second solder connections to allow the corresponding springs to be displaced away from the respective MOV stack input terminals.