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:
Jun. 30, 1981
Filed:
Jan. 18, 1980
Applicant:
Inventor:
Franco Ferrarini, Milan, IT;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M / ;
U.S. Cl.
CPC ...
429 63 ; 429 89 ; 429 72 ;
Abstract
A device for maintaining the electrolyte level in the accumulator of an electric battery includes a pneumatic chamber, with levelling members in it, connected to the accumulator, and a reservoir for supplying liquid to the pneumatic chamber. The levelling members assure a constant level of liquid in the pneumatic chamber. When the electrolyte level in the accumulator drops below a preset limit, the resulting reduction in pressure in the pneumatic chamber permits reservoir liquid to enter the accumulator, until the level of electrolyte in the accumulator rises enough to raise the pressure in the pneumatic chamber to stop flow of liquid into the accumulator.