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:
Sep. 14, 1993
Filed:
Apr. 09, 1992
Applicant:
Inventor:
Roland Sudler, Frankfurt am Main, DE;
Assignee:
VDO Adolf Schindling, Frankfurt, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02K / ;
U.S. Cl.
CPC ...
310 / ; 310156 ; 310254 ;
Abstract
An electromagnetic stepping motor for two directions of rotation has a stator (1), a rotor (6) and a housing (23). Four half-coils (2) with iron cores (4) are arranged equidistant from and with their axes parallel to the rotor axis (3) and perpendicularly to a return bridge (5). Each half-coil (2) is wound in the direction opposite the half-coils (2) lying opposite it. The iron cores (4) are connected magnetically to each other by a pole-shoe spider (8) at their ends which lie opposite the return bridge (5). The permanent magnet (7) of the rotor (6) is arranged within a central bore hole (9) of the pole-shoe spider (8), with the formation of an air gap.