Chemistry: electrical current producing apparatus – product – and – Means externally releasing internal gas pressure from closed... – Blowout type
Patent
1983-11-04
1985-08-27
Skapars, Anthony
Chemistry: electrical current producing apparatus, product, and
Means externally releasing internal gas pressure from closed...
Blowout type
429174, 429185, 429 82, H01M 200
Patent
active
045378410
ABSTRACT:
In a sealed cell having an anode, a cathode, and a cylindrical can into which the principal components of the cell are assembled, a sealing and insulating member (seal) is provided at the open end of the can, and is held in sealing relationship with the can by a crimp formed over the top edge thereof. The seal may be formed so as to have a downwardly depending skirt in its lower portion; generally in the manner of a plurality of leg-like projections, usually three. Across the upper surface of the member, and over an upwardly directed and centrally located nail boss in the upper surface, there is placed a metal disc having a centrally located opening which is in interference fit with the outside periphery of the nail boss, and having a passage formed therein for pressure equalization of the space between the plastic body and the metal disc to the outside of the cell. There is an upwardly extending skirt formed around the outer periphery of the member. The seal and insulating member may be snap-fitted into either a stepped can or a beaded can.
REFERENCES:
patent: 3314824 (1967-04-01), Spanur
patent: 3318737 (1967-05-01), Watanabe et al.
patent: 4075398 (1978-02-01), Levy
Book Ronald J.
Markin Charles
Wiacek Marian
Cornell Ronald S.
Duracell Inc.
Nissenbaum Israel
Skapars Anthony
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