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. 30, 1984
Filed:
Dec. 30, 1982
Applicant:
Inventors:
Assignee:
Tokyo Electric Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K / ;
U.S. Cl.
CPC ...
310 42 ; 310 / ;
Abstract
A stepping motor in which a rectangular stator core in the shape of a square frame has poles in the center of the inner side edges of sides thereof, four coils are wound on the poles of stator core, and a rotor is disposed in the space surrounded with the coils and having the height of each of poles being made 0.24 to 0.5 times as much as the outside diameter of the rotor. Each of poles has at the end thereof a plurality of projections according to a step angle. The rotor has projections on the peripheral surface thereof according to the step of the pole.