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:
Feb. 22, 2011
Filed:
Oct. 27, 2004
Barry J. Thurlow, Luton, GB;
Duncan I. Stevenson, St. Albans, GB;
Scott M. Potter, Welwyn Garden City, GB;
John W D. Cooper, Hitchin, GB;
Barry J. Thurlow, Luton, GB;
Duncan I. Stevenson, St. Albans, GB;
Scott M. Potter, Welwyn Garden City, GB;
John W D. Cooper, Hitchin, GB;
Xerox Corporation, Norwalk, CT (US);
Abstract
A circuit and method for generating an electrical alternating current power signal in which the alternating current signal is dropped once at a non-zero crossing point in every 540 plus N degrees, where N is a non-negative number. This manner of controlling power to a device enables wide ranges of power control while generating acceptable levels of power line harmonics and while conforming to existing international regulations governing voltage variations.