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:
Aug. 26, 1997
Filed:
Mar. 14, 1995
Applicant:
Inventors:
Assignee:
Varta Batterie Aktiengesellschaft, Hanover, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M / ;
U.S. Cl.
CPC ...
429 93 ; 429 92 ; 429 90 ;
Abstract
A multicell storage battery, especially of the nickel/hydride type, is provided with pressure safeties for protection against high internal pressures. The pressure safeties respond at a preassigned critical pressure, causing mechanical changes in shape or through destruction which can be optically or electrically monitored. For example, a hinged lid is caused to swing up responsive to a rupture disk, interrupting a light beam. Alternatively, a rupture disk is coated with a conducting enamel and is connected by lead wires to form an electrical circuit which is interrupted responsive to damage of the enamel layer (e.g., responsive to bursting of the membrane).