Chemistry: electrical current producing apparatus – product – and – Means externally releasing internal gas pressure from closed... – Elastic – resilient or spring biasing valve means
Patent
1993-02-08
1993-11-02
Skapars, Anthony
Chemistry: electrical current producing apparatus, product, and
Means externally releasing internal gas pressure from closed...
Elastic, resilient or spring biasing valve means
429 55, 429 82, H01M 212
Patent
active
052582426
ABSTRACT:
The electrochemical cell of the instant invention includes a case having a gas outlet, one or more positive electrodes positioned within the case, one or more negative electrodes positioned within the case electrode separators positioned between the positive and negative electrodes, electrolyte positioned within the case, and a pressure vent for releasing internal pressure occurring in the case to the surrounding atmosphere. The pressure vent is affixed to the case covering the gas outlet, the pressure vent includes a vent housing having a hollow interior area in gaseous communication with the surrounding atmosphere and the interior of the case via the gas outlet, a pressure release piston positioned within the hollow interior area, the pressure release piston sized to surround the gas outlet and having a seal groove configured to encapsulate all but one surface of a seal mounted within the seal groove, leaving the non-encapsulated surface of the seal exposed, and a compression spring positioned to urge the pressure release piston to compress the seal in the seal groove and block the gas outlet in the case.
REFERENCES:
patent: 4078121 (1978-03-01), Gratzmuller
patent: 4328290 (1982-05-01), Szymborski et al.
patent: 4338382 (1982-07-01), Fritts
Dean Kevin
Fillmore Donn
Holland Arthur
Luddy Marc
Ovonic Battery Company Inc.
Schumaker Dave
Siskind Marvin
Skapars Anthony
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