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:
Aug. 18, 1987
Filed:
Mar. 17, 1986
Applicant:
Inventor:
Ralph W Horber, Marshfield, MA (US);
Assignee:
Seiberco Incorporated, Braintree, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02K / ; H02P / ;
U.S. Cl.
CPC ...
310186 ; 310 65 ; 310216 ;
Abstract
A polyphase brushless DC motor has an integral automatic feedback arrangement and a high degree of magnetic balance. The stator pole elements of the motor are identical and equidistantly spaced, and the coils with which they are wound are connected as pairs; the pole elements in most of the armature pairs are directly adjacent one another. The sensor means has at least two circuit legs, each being connected to paired pole elements of the stator to provide a sensor channel, the channels cooperating to provide highly accurate rotor position feedback information.