Method for manufacturing alkaline battery

Details Method for manufacturing alkaline battery Method for manufacturing alkaline battery

2008-01-01

2008-01-01

Ryan, Patrick Joseph (Department: 1745)

Metal working

Method of mechanical manufacture

Electrical device making

C429S174000, C429S175000, C429S219000, C429S223000, C429S224000, C429S229000

Reexamination Certificate

active

10834673

ABSTRACT:
In a method in which the inside surface of the negative electrode cup of an alkaline battery is coated with metal or metal alloy having a higher hydrogen overpotential than copper, the mask used for coating processing has the shape in which: when d is the diameter of the negative electrode cup, t is the plate thickness of the negative electrode cup, A is the diameter of the mask opening on the negative electrode cup mounting side, B is the diameter of the mask opening on the negative electrode cup supplying side, h is the depth of the negative electrode cup, C is the thickness of mask on negative electrode cup mounting side, and D is a tapered angle of the mask opening on the negative electrode cup, 2(2t+d)−B>A ≧0.7d, (A/2)−h≧C>0 mm, and 90°>D≧45° are satisfied to coat only the inside surface area except a cuff portion and cuff bottom portion.

REFERENCES:
patent: 6794082 (2004-09-01), Mori et al.

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