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:
Nov. 02, 2004
Filed:
Feb. 27, 2002
Applicant:
Inventors:
Frank Wegner Donnelly, North Vancouver, CA;
Brian Ward Gulayets, Burnaby, CA;
Assignee:
Railpower Technologies Corp., North Vancouver, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02P 7/68 ;
U.S. Cl.
CPC ...
H02P 7/68 ;
Abstract
A control system for individually controlling power from a single voltage source to a plurality of motors is described. A chopper circuit, in conjunction with the control system, generates drive-pulses, which operates the IGBT switching devices to sequentially provide pulses to each motor.
Quick Actions:
Donnelly, Frank. (2004). Sequenced pulse width modulation method and apparatus for controlling and powering a plurality of direct current motors (U.S. Patent No. 6812656). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6812656
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile