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:
Aug. 14, 2001
Filed:
Nov. 06, 1998
Applicant:
Inventor:
William E. M. Jones, Freeport, BS;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 2/12 ;
U.S. Cl.
CPC ...
H01M 2/12 ;
Abstract
A lead acid storage battery cell having a sealed housing in which a positive electrode and a negative electrode are immersed in a liquid electrolyte. The negative electrode is partially exposed to a gas space within the battery cell housing. A pressure relief valve allows excess gas to escape the battery cell while preventing air from outside the cell from entering the gas space. Exposing a section of the negative plate to oxygen gas that evolves within the battery and collects in the gas space reduces water consumption of the cell and extends the maintenance-free life of the battery. The addition of a catalyst to recombine oxygen and hydrogen offers further improvement.