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:
Dec. 07, 2004
Filed:
Jun. 14, 2002
Applicant:
Inventor:
Lutz Axel May, Gelting, DE;
Assignee:
Abas, Incorporated, Chicago, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01L 3/10 ;
U.S. Cl.
CPC ...
G01L 3/10 ;
Abstract
Torque in a shaft ( ) is detected by means of non-contacting sensors ( ) sensing a torque-dependent magnetic field emanated by an integral transducer region ( ) of the shaft ( ) that is circumferentially or longitudinally magnetized. The shaft ( ) is driven by a motor ( ) and subject to a longitudinal magnetic field ( ) which acts on interference field. In one implementation of the invention coils (L , L : L , L ) are energized to provide a counteracting magnetic field to compensate the interference field ( ).