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. 13, 2015
Filed:
Jul. 02, 2013
Applicant:
Dyson Technology Limited, Wiltshire, BG;
Inventor:
Stephen Greetham, Malmesbury, GB;
Assignee:
Dyson Technology Limited, Malmesbury, Wiltshire, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02P 1/00 (2006.01); H02P 1/46 (2006.01);
U.S. Cl.
CPC ...
H02P 1/00 (2013.01); H02P 1/465 (2013.01);
Abstract
A method of preheating a brushless motor that includes sequentially energizing and de-energizing a phase winding over one or more drive periods. The phase winding is energized in the same direction throughout each drive period so as to lock a rotor of the motor at an aligned position.