Chemistry: electrical current producing apparatus – product – and – Means externally releasing internal gas pressure from closed... – Blowout type
Reexamination Certificate
2007-01-31
2011-12-13
O'Neill Apicella, Karie (Department: 1795)
Chemistry: electrical current producing apparatus, product, and
Means externally releasing internal gas pressure from closed...
Blowout type
C429S082000, C429S174000
Reexamination Certificate
active
08076015
ABSTRACT:
An electrochemical cell with a pressure relief vent formed in a metal plate disposed in at least one of the closed end and the open end of the container. The pressure relief vent has an annular ring that includes a reduced thickness groove, interrupted in at least two places by unthinned sections of the plate. When the vent opens to relieve pressure from within the cell, the area of the plate within the annular ring remains attached to the remainder of the plate by at least one of the unthinned sections. A can with such a pressure relief vent formed in the can bottom is useful as an electrochemical cell container.
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Oberg, E.; Jones, F.D.; Horton, H.L.; Ryffell, H.H.; Machinery's Handbook (26th ed.); Aug. 21, 2001; Industrial Press; 407.
Bouffard Richard L.
Elsdon, Jr. Paul R.
Lewis Peter M.
Li Huaxin
Ray, Jr. Robert E.
Apicella Karie O'Neill
Eveready Battery Company Inc.
Pophal Michael C.
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