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. 17, 1979
Filed:
Apr. 04, 1978
Daniel Coueille, Poitiers, FR;
Saft-Societe des Accumulateurs Fixes et de Traction, Romainville, FR;
Abstract
An arrangement for sealing a button-type electric cell. Such a cell comprises a metal cup which contains a first electrode, and a metal cap which forms a cover to the cup and which contains a second electrode of opposite polarity. The rim of the cup is turned down over a seal disposed on the rim of the cap. A metal ring which has a cylindrical portion in contact with the inner face of the cylindrical wall of the cup, an intermediate portion which has a stair-case or an oblique cross-section and an annular portion which is orthogonal to the cylindrical portion is disposed in the cup, these latter two portions making it possible to compress the seal against the cylindrical wall of the cup.