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:
Jan. 18, 1977
Filed:
Aug. 08, 1974
Applicant:
Inventor:
Arthur W Haydon, Middlebury, CT (US);
Assignee:
Tri-tech, Inc., Waterbury, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K / ;
U.S. Cl.
CPC ...
310 41 ; 310164 ; 310156 ; 310257 ;
Abstract
A self-starting unidirectional electric motor in which a pair of auxiliary stator pole members are angularly spaced from the main stator poles and are provided with a magnetic return path having a reluctance which is less than the reluctance of the return path for the main stator poles. When the field coil of the motor is deenergized, the rotor consistently assumes a favorable starting position in which each rotor pole is opposite one of the auxiliary pole members. In several advantageous embodiments the housing for the motor is fabricated from nonconductive, nonmagnetic material, and the main stator poles serve as the motor's electrical terminals.