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:
Mar. 21, 1978
Filed:
Jun. 14, 1976
Applicant:
Inventor:
Erik G Sundberg, Yardley, PA (US);
Assignee:
Aktiebolaget Tudor, Sundbyberg, SW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29D / ; B32B / ;
U.S. Cl.
CPC ...
156218 ; 156282 ; 156311 ; 156466 ; 156498 ; 156499 ; 156500 ;
Abstract
A sheath for battery electrodes is made by introducing a fibrous tubular material along a mandrel. A perforated thermoplastic material is applied around the outside of the fibrous material. Subsequent to applying the fibrous material, the mandrel is heated, thereby heating the fibrous material. The latter heats and softens the inside of the thermoplastic material at their points of mutual contact. The thermoplastic material is then subjected to external pressing forces and external cooling temperatures to press the thermoplastic material against the fibrous material while cooling the thermoplastic material.