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. 11, 2002
Filed:
Feb. 22, 2000
Tadamitsu Azema, Miyagi-ken, JP;
Yoshinori Ishikawa, Miyagi-ken, JP;
Yosuke Arimori, Miyagi-ken, JP;
Alps Electric Co., Ltd., Tokyo, JP;
Abstract
The invention provides a high-performance pressure sensitive current breaker for a cell that securely cuts off the current path inside the cell even when the pressure increase inside the cell is low, and suppresses the pressure increase inside. The pressure sensitive current breaker for a cell of this invention is configured such that an insulator to swell out toward a diaphragm portion is formed by the insert molding with part of a lead part exposed from an opening of a retaining member, a notching part is formed on part of the lead part to make the lead part easily ruptured, a current path between a generating element inside the cell and an external electrode is made through the lead part, and when a pressure inside the cell case rises over a specific value to displace the diaphragm upward, the diaphragm presses the insulator upward to rupture the lead part at the notching part, thereby cutting off the current path.