Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Flat-type unit cell and specific unit cell components
Reexamination Certificate
2006-09-19
2006-09-19
Ryan, Patrick Joseph (Department: 1745)
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Flat-type unit cell and specific unit cell components
C429S127000, C429S211000, C429S128000, C429S124000, C429S231950, C029S623100
Reexamination Certificate
active
07108941
ABSTRACT:
A positive electrode plate (7) and a negative electrode plate (8) are coiled around with a separator (9) interposed therebetween into a flat shape having a rectangular plan to obtain an intermediate product (17) of an electrode plate group, whose corners are then cut off along straight or curved lines to obtain a substantially octagonal electrode plate group (1a, 1b), so that it is accommodated in a negative electrode case (5) having a circular plan with good space efficiency. The problem of residual water in the coiled electrode plate group (1a, 1b, 1c) of a coin type battery having high load current characteristics is resolved by a vacuum dry treatment, and the problem of dust generated during the welding of leads is resolved by a method whereby dust is not scattered inside the case. Flat batteries with higher reliability are thus obtained.
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Hayashi Tetsuya
Nakanishi Makoto
Jordan and Hamburg LLP
Martin Angela J.
Ryan Patrick Joseph
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