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:
Oct. 18, 1977
Filed:
Dec. 04, 1975
Sven E Wahlstrom, Palo Alto, CA (US);
Other;
Abstract
Method and apparatus for charging a battery or other electrical energy storage means by converting random mechanical motion into electrical energy by utilizing gravitational and acceleration forces. The apparatus includes two variable capacitors and a bias supply connected to the battery or electrical energy storage means. The variable capacitors have their capacitance varied in an alternating manner by the physical displacement of a conductive member that forms one plate in each of the capacitors. The moving conductive member causes the electrical charge on the capacitors to be passed back and forth. The apparatus further includes a plurality of diodes located in the circuit so that each time the electrical charge passes between the capacitors the current formed thereby passes through the battery and charges it.