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. 03, 2001
Filed:
Jun. 04, 1998
Applicant:
Inventor:
Renyan W. Fei, St. Louis, MO (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02K 1/00 ; H02P 1/26 ; H02P 1/42 ;
U.S. Cl.
CPC ...
H02K 1/00 ; H02P 1/26 ; H02P 1/42 ;
Abstract
A single phase, three-speed Pole-changing electric motor has a stator and a rotor rotatably mounted within the stator. The stator includes a core having a plurality of slots, and a plurality of windings in the slots for operating at least three speeds. The windings are configured and arranged so that a substantial portion of the windings used in operating at one speed are used in operating at another speed. The reconnection of windings for different speeds is simple and easy to implement, for example with an external timer, switch, or relay.