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. 14, 2000
Filed:
Sep. 09, 1998
Applicant:
Inventors:
Go Kashio, Aichi, JP;
Yasuyuki Yoshihara, Aichi, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M / ;
U.S. Cl.
CPC ...
429242 ; 429225 ; 429226 ; 429233 ; 429241 ;
Abstract
A slit is formed in a clad sheet integrating a thin layer of lead alloy containing at least one of tin and antimony at least on one side ot a parent material made of lead or lead-calcium system alloy. The clad sheet is processed by expanding to twist the rib of the formed grid, and the thin layer of the lead alloy containing at least one of tin and antimony is spirally oriented in multiple directions, as the positive electrode plate. An expanded grid is thus formed. In this manner charging reception characteristics after long-term storage following deep discharge at high temperature ot a lead-acid battery are improved.