Sealed storage battery

Details Sealed storage battery Sealed storage battery

1996-05-16

1997-09-09

Valentine, Donald R.

Chemistry: electrical current producing apparatus, product, and

Means externally releasing internal gas pressure from closed...

429171, 429174, 429185, H01M 212, H01M 208, H01M 210, H01M 202

Patent

active

056654839

ABSTRACT:
A sealed storage battery has a sealing assembly including a hollow rivet mounted to a cover plate via a gasket and a lead piece connecting a positive collector to the hollow rivet. Mounting the hollow rivet to the cover plate is achieved by pressurizing a distal end portion of a hollow shaft of the hollow rivet with a punch having a conical tip end portion so as to caulk the distal end portion of the hollow rivet by enlarging the distal end portion diametrically outward. Tightness between the opposing surfaces of the members among the cover plate, hollow rivet, gasket and lead piece can be enhanced, providing excellent liquid leakage resistance in the battery. A valve body of a safety valve is housed in a positive terminal welded to the head of the hollow rivet.

REFERENCES:
patent: 3497395 (1970-02-01), Kohen
patent: 3537903 (1970-11-01), Braun
patent: 4209572 (1980-06-01), Reissland
patent: 4252873 (1981-02-01), Epstein et al.
patent: 4977043 (1990-12-01), Kadouchi et al.
patent: 5197995 (1993-03-01), Lowton et al.
Patent Abstracts of Japan, unexamined applications, E field, vol. 13, No. 232, May 29, 1989, The Patent Office Japanese Government, p. 34 E 765; & Jp-A-01 038 965 (Matsushita Electric Ind. Co., Ltd.).
Patent Abstracts of Japan, unexamined applications, E field, vol. 15, No. 50, Feb. 6, 1991, The Patent Office Japanese Government, p. 130 E 1030; & JP-A-02 281 554 (Matsushita Electric Ind. Co., Ltd).

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