The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 10, 1984
Filed:
Mar. 31, 1983
Frank G Spanur, Parma Heights, OH (US);
Union Carbide Corporation, Danbury, CT (US);
Abstract
A galvanic cell having a plastic closure member having a resiliently deformable peripheral annular flange defined by an annular groove having an inner upstanding wall, a base, and an outer upstanding wall in the upper surface of said closure member, said flange defining an annular notch forming a venting lip and a sealing lip, and said closure member defining at least one aperture extending through the base of said annular groove, said closure member being compressed such that the venting lip is positioned over the annular groove to form a closed groove; said closure operable such that internal pressure in the cell is released by the momentary deflection of the venting lip.