Vent valve for nickel-cadmium energy cells

Details Vent valve for nickel-cadmium energy cells Vent valve for nickel-cadmium energy cells

1975-08-21

1976-11-30

Walton, Donald L.

Chemistry: electrical current producing apparatus, product, and

Means externally releasing internal gas pressure from closed...

220209, H01M 212

Patent

active

039947491

ABSTRACT:
A vent valve for electric energy cells requiring pressure relief capability for gases formed within the cells due to overcharging or other circumstances includes a cover plate for the internal structure of the cell which contains a central relief aperture. A vent cap is affixed to the cover plate with one or more vent ports being provided. A resilient seal is provided between the vent cap and the cover plate for controlling the release of the gases, the seal being die-cut of a suitable corrosion-resistant material and having two parallel plane surfaces which contact the cover plate and the closed end of the vent cap when the cap and plate are joined. The seal is preferably of a polygon configuration and its vertices contact the walls of the cap for fixed positioning. The vent path for the gases is through the aperture in the cover plate, between the cover plate and the resilient seal, and out through the vent ports.

REFERENCES:
patent: 2790570 (1957-04-01), Hodges et al.
patent: 3484301 (1969-12-01), Gray
patent: 3661650 (1972-05-01), Flynn
patent: 3715239 (1973-02-01), Walker et al.

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