Chemistry: electrical current producing apparatus – product – and – Sealed cell having gas prevention or elimation means
Patent
1975-06-04
1978-02-21
Mack, John H.
Chemistry: electrical current producing apparatus, product, and
Sealed cell having gas prevention or elimation means
H01M 212
Patent
active
040753999
ABSTRACT:
A method of substantially sealing a lead-acid storage battery, capable of activation by the addition of electrolyte or water after storage, is provided which prevents excessive internal pressure build-up during the storage. In one embodiment, the substantial sealing is provided by a vent seal which can be formed with surfaces duplicating the diameter of the cell vent collar so that a conventional vent cap can be fitted and retained in place, substantially in the final operating position. When the substantial sealing is provided by means other than the vent seal, the seal, without the vent feature, serves to allow positioning of the normal battery vent caps in substantially their final operational positions. In the preferred embodiment, the vent seal includes a tear tab so that if accidentally replaced after removal and activation of the battery and partial separation of the tear tab, adequate venting of the gases generated within the battery such as would occur during charging is provided.
REFERENCES:
patent: 1786961 (1930-12-01), Petrosky
patent: 1816035 (1931-07-01), Woodbridge
patent: 2835720 (1958-05-01), Buskirk
patent: 2972001 (1961-02-01), Clingenpeel
patent: 3284244 (1966-11-01), Lucas
patent: 3466199 (1969-09-01), Hennen
Rao Purushothama
Sabatino Anthony
Feeley H. A.
Gould Inc.
Mack John H.
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