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. 13, 1994
Filed:
Jul. 31, 1992
Gunther Ries, Erlangen, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
A magnetic device (2) containing a soft magnetic yoke member (3) in its magnetic circuit. The yoke member carries a magnetic flux (.PHI.) produced by a magnetic-field-generating device (7,8) and generates a magnetic stray field (H.sub.s). To reduce this stray field, the present invention surrounds a section (3c) of the yoke member (3) by a compensating-field winding (13), which is electrically excited so that, in addition to the flux (.PHI.) produced by the device (7,8) in the yoke member (3), a supplemental flux (.PHI.') of such magnitude is created that the magnetic dipole moment of the yoke member (3) that produces the stray field (H.sub.s) is at least partially compensated for.