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:
Nov. 01, 1977
Filed:
Feb. 11, 1976
Applicant:
Inventors:
Frank George Spanur, Parma Heights, OH (US);
Vicente Santo Alberto, Parma, OH (US);
Assignee:
Union Carbide Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M / ;
U.S. Cl.
CPC ...
429 54 ; 429171 ; 429218 ;
Abstract
A primary dry cell comprising a metal anode cup having a cathode mix therein, an open end, a central cathode rod through the open end, and a closure, the closure having a central bore and a venting sleeve defined by an annular groove in the closure and being disposed proximate the central bore.