Pressure vent for a sealed primary cell

Details Pressure vent for a sealed primary cell Pressure vent for a sealed primary cell

H - Electricity

01

M

319/39, 319/48

H01M 2/12 (2006.01) H01M 4/08 (2006.01)

Patent

CA 1131303

3895-P GWR 08/15/78 PRESSURE VENT FOR A SEALED PRIMARY CELL ABSTRACT OF THE INVENTION A disc formed of a resilient plastic exhibiting a low creep characteristic and having a pressure vent is used to close the mouth of a tubular cell envelope of a primary cell. An elongated terminal is inserted through the disc and into the cell interior. The pressure vent is in the disc at a location between the terminal and the edge of the disc. The vent comprises a recess having a frangible diaphragm with at least one groove. At a predetermined pressure the diaphragm breaks at the groove, releasing pressure.

334587

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