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. 29, 1988
Filed:
Jun. 24, 1987
Applicant:
Inventors:
Christian Bohle, Soest, DE;
Eberhard Nann, Deiringsen, DE;
Assignee:
Hagen Batterie AG, Soest, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M / ;
U.S. Cl.
CPC ...
429139 ; 429147 ;
Abstract
The invention concerns a sheet material and separator envelopes manufactured therefrom for enclosing electrode plates of batteries. The cited object is to improve the manufacturability of the heat-sealed or bonded seams of the electrode envelopes and to prevent puncturing or rupturing of the separator envelopes due to growth of the positive grid. This object is achieved by means of a base-sheet thickness for the sheet material used to manufacture the separator envelopes which is greater in the region of the marginal areas than in the region of the inner surface of the sheet material or separator envelopes.