Vent cap with electrolyte drain and explosion attenuation capabi

Details Vent cap with electrolyte drain and explosion attenuation capabi Vent cap with electrolyte drain and explosion attenuation capabi

1993-05-27

1994-02-08

Skapars, Anthony

Chemistry: electrical current producing apparatus, product, and

Having specified venting, feeding or circulation structure

Venting structure

429 89, H01M 212

Patent

active

052847209

ABSTRACT:
The explosion attenuating vent cap for storage batteries according to the present invention features an electrolyte drain and baffle design adapted for maximizing return to the battery of any liquid which may enter the vent from vibration, tilting, overheating, overcharge and the like. The vent barrel(s) include a step to assist in closure of the fill openings, and baffles within the vent prevent accumulation of electrolyte within the cap. The arrangement of the entrance to the gas escape passage (leading through an explosion attenuation device such as a disc of microporous polymer) is located on the center lines of the barrel and at the highest possible location within the vent to minimize the intrusion of electrolyte into the attenuation material. This location of the entrance prevents accumulation of electrolyte at that location. Preferably, the vent cap is of the ganged variety, i.e. useful for simultaneously capping three or more fill openings of the battery.

REFERENCES:
patent: 2452066 (1948-10-01), Murphy
patent: 3597280 (1971-08-01), Hennen
patent: 3630788 (1971-12-01), Hennen
patent: 3723188 (1973-03-01), Hennen
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patent: 4394423 (1983-07-01), Ledjeff
patent: 4447508 (1984-05-01), Jensen
patent: 4463069 (1984-07-01), Greenlee
patent: 4751154 (1988-06-01), Binder et al.
patent: 4916034 (1990-04-01), Hulsebus et al.

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