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. 08, 1983
Filed:
May. 06, 1982
Toshio Uba, Denver, CO (US);
Gates Energy Products, Inc., Denver, CO (US);
Abstract
A multi-layered gas permeable separator for lead-acid maintenance-free batteries, particularly for sealed gas recombining type rechargeable lead-acid batteries, is disclosed. The outer separator layers, adapted to be positioned against the opposite polarity plates of the battery, are composed of ultrafine fibers particularly glass fibers of relatively high fiber surface area. A third layer is interposed between the outer layers and is comprised of ultrafine fibers particularly of fiber glass, but has a fiber surface area on an equivalent weight basis which is substantially less than that of at least one of the outer layers. High rate, low temperature discharge performance of the battery is enhanced.