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. 04, 1996
Filed:
Jun. 05, 1995
Fumiaki Murakami, Okazaki, JP;
Tetsuya Nagata, Konan, JP;
Hiroshi Tamura, Kariya, JP;
Masanori Tabayashi, Kariya, JP;
Tomoyasu Takeuchi, Kariya, JP;
Nippondenso Co., Ltd., Kariya, JP;
Abstract
This invention provides a chemical cell equipped with a safety mechanism which can restrict an abnormal reaction of a cell and can prevent in advance gas explosion, etc., of the cell. The chemical cell 4010 comprises a cell reaction portion 4015, a positive pole terminal 4016 and a cell case 4041 functioning also as a negative pole terminal. A driving member 4021 responsive to a gas pressure or reaction heat at the time of the abnormal reaction includes a retention mechanism 4025 having a flexible member 4251 which cuts off a current and maintains this state. It also includes a gas discharge member. The driving member 4021 preferably short-circuits the positive pole terminal 4016 and the cell case 41 after the current is cut off, and preferably includes a valve member 4301 for closing a gas passage 4047 again after the gas is discharged (see FIG. 40 ).