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:
Jul. 09, 1996
Filed:
Dec. 19, 1991
Applicant:
Inventors:
John J Williams, Auckland, NZ;
Christian J Gianni, Auckland, NZ;
Assignee:
Fisher & Paykel Limited, Auckland, NZ;
Primary Examiner:
Int. Cl.
CPC ...
H02P / ;
U.S. Cl.
CPC ...
318799 ; 318254 ; 318439 ; 388806 ;
Abstract
A method of controlling the commutation of power to an electric motor back EMF sensing or Hall effect sensors is disclosed. At least part of the current waveform is sensed in at least one motor winding and is used to establish information relating to the appropriate commutation pattern required to commutate power to the motor and control motor parameters e.g. motor speed.
Williams, John. (1996). Methods of and/or apparatus for electronically commutated motor control (U.S. Patent No. 5534763). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5534763
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile