Snap-through anti-ignition vent cap for lead acid storage batter

Details Snap-through anti-ignition vent cap for lead acid storage batter Snap-through anti-ignition vent cap for lead acid storage batter

1979-04-30

1980-11-11

Skapars, Anthony

Chemistry: electrical current producing apparatus, product, and

Having specified venting, feeding or circulation structure

Venting structure

429 89, H01M 212

Patent

active

042333709

ABSTRACT:
A vented battery cap is provided which is adapted to engage at least one of a plurality of fill holes in an automotive storage battery or similar lead acid battery and which has pressure release means for venting the combustible gases produced within that storage battery under conditions such as overcharge conditions into the atmosphere. The cap itself is comprised of substantially two portions, a base member which fits into at least one of the fill holes and a top member which snap-fits through the base member. The pressure release means comprises a plurality of extremely narrow slits on both the top and underside of the cap which have widths in the order of 0.003 to 0.005 of an inch. The remainder of the battery cap is tightly sealed to prevent any extraneous leaks of battery gases received from the automotive battery from leaking into the atmosphere. The slits are so constructed to facilitate the safe expulsion of any volume of gas normally produced by an automotive storage battery, while virtually eliminating the likelihood that ignition of gases within the atmosphere will result in explosive consequences either within the battery cap or within the battery itself.

REFERENCES:
patent: 3879227 (1975-04-01), Hennen
patent: 3992226 (1976-11-01), Godshalk
patent: 4010044 (1977-03-01), Schaumburg
patent: 4072799 (1978-02-01), Leeson et al.
patent: 4086395 (1978-04-01), Heiser et al.
patent: 4091180 (1978-05-01), Fox et al.
patent: 4098963 (1978-07-01), Mocas

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