Flat square battery

Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Flat-type unit cell and specific unit cell components

Reexamination Certificate

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Details

C429S163000, C429S175000, C429S185000

Reexamination Certificate

active

06893773

ABSTRACT:
A power generation element is stored in an inner space formed by combining a battery case (2) and a seal case (3) formed as a half-shell body with a rectangular plane shape such that the individual openings are placed opposing to each other with a gasket (4) interposed therebetween, and the gasket (4) is pressed between the open end of the battery case (2) and a step (35) of the seal case (3) for sealing during caulking. Because recesses (36) are formed on the individual peripheral edges of a bottom surface (31) of the seal case (3), the strength of straight parts of a seal-case side-peripheral surface (32) of the seal case (3) increases against a seal pressure during caulking, and a decrease of seal capability caused by the straight parts bulging toward the outside during sealing is prevented.

REFERENCES:
patent: 1484926 (1924-02-01), Benner
patent: 20030077505 (2003-04-01), Goda et al.
patent: 59-33661 (1984-03-01), None
patent: 6-260172 (1994-09-01), None
patent: 10-255733 (1998-09-01), None
patent: 2000-164259 (2000-06-01), None

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