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:
Jan. 30, 1979
Filed:
Apr. 19, 1977
Applicant:
Inventors:
Assignee:
Firma Carl Freudenberg, Weinheim, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M / ;
U.S. Cl.
CPC ...
429254 ;
Abstract
In a storage battery comprising a housing, a plurality of plates within said housing, an electrolyte within said housing about said plates, and a non-woven fabric separator between adjacent plates, the improvement which comprises employing as said separator a compressed web of synthetic fibers deposited in random arrangement and having an essentially dumbbell-shaped profile. Preferably the fibers comprise polystyrene, polyolefin or polycarbonate and have a maximum diameter of about 1 to 10 .mu.m, and the web has a thickness of about 0.05 to 0.3 mm, a weight of about 20 to 100 g/m.sup.2, a pore volume of about 50 to 90% and an average pore size from about 0.5 to 15 .mu.m.