Chemistry: electrical current producing apparatus – product – and – Means externally releasing internal gas pressure from closed... – Blowout type
Reexamination Certificate
2011-01-25
2011-01-25
Ryan, Patrick (Department: 1795)
Chemistry: electrical current producing apparatus, product, and
Means externally releasing internal gas pressure from closed...
Blowout type
C220S203010
Reexamination Certificate
active
07875376
ABSTRACT:
An electrochemical cell is provided with an enhanced pressure relief vent formed in a closed end of the cell container that allows for effective venting of gas from the closed end of the container. The cell includes a container having a first end, a second end, a side wall extending between the first and second ends, and an end wall extending across the first end. The cell has a positive electrode, a negative electrode, and an aqueous alkaline electrolyte, all disposed in the container. The cell further includes a pressure relief vent mechanism having an offset C-shaped reduced thickness groove formed in the end wall of the container. A cover can be welded to the closed end wall of the container over the pressure relief vent mechanism.
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Begg R. Justin
Bouffard Richard L.
Ebner Walter B.
O'Halloran John
Ray Robert E.
Adams Gregory J.
Eveready Battery Company Inc.
Parsons Thomas H.
Ryan Patrick
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