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:
Dec. 09, 2014
Filed:
Feb. 04, 2011
John K. Grady, Harvard, MA (US);
John K. Grady, Harvard, MA (US);
Other;
Abstract
Applicant has disclosed a method and apparatus for a bipolar automotive electrical system. In the preferred 'apparatus' embodiment, Applicant's bipolar electrical system comprises: two (e.g., 12 V) batteries of equal, but opposite voltage (e.g., +12 V, −12 V), with bipolar outputs; an alternator, responsive to the batteries, which controls electrical charge to the batteries individually; an automotive DC motor connected by a single lead wire to the bipolar outputs from the batteries; and, wherein the reversible motor is run off the bipolar output without the need for any intervening devices between the bipolar command outputs and the motors. Alternatively, the alternator can inherently charge the batteries sequentially with the lowest voltage battery being addressed first. This approach allows heavy loads to be powered by 24 V or 48 V DC, yet the arc voltage to ground is still only 12 V or 24 V DC.