Chemistry: electrical current producing apparatus – product – and – Having specified venting – feeding or circulation structure – Venting structure
Patent
1975-07-25
1976-11-16
Walton, Donald L.
Chemistry: electrical current producing apparatus, product, and
Having specified venting, feeding or circulation structure
Venting structure
220367, H01M 212
Patent
active
039922260
ABSTRACT:
An inexpensive anti-explosion, anti-flame cap for openings in storage battery casings is formed, as by injection molding, from polymeric material in such fashion as to provide at least one critically dimensioned and located vent orifice effective to prevent establishment of a persistent flame at the orifice when hydrogen and oxygen are evolved during charging of the battery, and further effective to prevent propagation of flame through the orifice into the interior of the cap. Caps according to the invention also include internal mist chambers so arranged that liquid electrolyte is prevented from reaching the vent orifice or orifices and does not "pump through" the cap as a result of vibration of the storage battery in use.
REFERENCES:
patent: 3630788 (1971-12-01), Hennen
patent: 3879227 (1975-04-01), Hennen
patent: 3907605 (1975-09-01), Melone
Ultra-Mold Corporation
Walton Donald L.
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