Chemistry: electrical current producing apparatus – product – and – Means externally releasing internal gas pressure from closed... – Blowout type
Patent
1975-05-12
1977-02-15
Walton, Donald L.
Chemistry: electrical current producing apparatus, product, and
Means externally releasing internal gas pressure from closed...
Blowout type
220207, 296232, H01M 212
Patent
active
040083543
ABSTRACT:
An extrudible hot melt adhesive material is utilized in a low cost vent for an electrochemical cell to relieve abnormal pressure formed during improper use of the cell. The extrudible hot melt adhesive material is suitably joined or bonded to a member used to provide a cell top, and covers and fills a vent hole formed in the member. Material is extruded through the vent hole by abnormal pressure to open the vent hole and allow the abnormal pressure to be released through the opened vent hole. The venting pressure can be predetermined by varying vent hole diameter, amount of adhesive, and the composition of the filler adhesive material with respect to viscosity.
REFERENCES:
patent: 2144959 (1939-01-01), Blackburn
patent: 3669302 (1972-06-01), Markarian
patent: 3855006 (1974-12-01), Kegelman
patent: 3877992 (1975-04-01), Urry
Fitchman Arthur
Wyatt Terry Doug
Cornell Ronald S.
Hoffmann Charles W.
Nissenbaum Israel
P. R. Mallory & Co. Inc.
Walton Donald L.
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