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:
May. 15, 1990
Filed:
Apr. 20, 1988
Dechko Pavlov, Sofia, BG;
Todor V Donchev, Sofia, BG;
Ivan P Nikolov, Sofia, BG;
Veneta I Nikolova, Sofia, BG;
Geno P Papazov, Sofia, BG;
Konstantin M Petrov, Sofia, BG;
Abstract
A device for recombining hydrogen and oxygen released in maintenance-free ad-acid storage batteries as well as their electrochemical conversion is composed of electrodes employed in a stack enveloped in a sheath of microporous material with the individual electrodes also being separated by such material. The device may be employed in sealed storage batteries when connected through a diode to the negative pole of a cell of the battery. A stack of electrodes may be divided in two parts, one part connected through a diode to the negative pole and the other part connected through a diode and a resistor to the positive pole, at which time the device is immersed partially in the electrolyte of the cell. The electrodes contains a catalyst from a combination of tungsten carbide and the active or activate carbon and a polymeric binder on a support grid of lead or lead alloy, the catalyst/binder mixture having been pressed onto the support grid or forming two layers situated at the surfaces of the electrode. Between these two catalytic layers a third layer composed of carbon black and binder, and containing the support grid, is situated.