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:
May. 20, 2003
Filed:
Oct. 02, 2001
Applicant:
Inventors:
Asad M. Madni, Los Angeles, CA (US);
Jim B. Vuong, Northridge, CA (US);
Mitchell London, Buena Vista, CA (US);
Assignee:
BEI Sensors & Systems Company, Inc., Sylmar, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01L 3/14 ;
U.S. Cl.
CPC ...
G01L 3/14 ;
Abstract
A vertical movement capacitive torque sensor for a rotating shaft such as the steering column of an automobile includes dielectric vanes interposed between capacitor plates which are moveable proportional to the angular displacement of two shaft portions which are linked by a torsion bar or concentric inner and outer shaft portions, the vanes move in a radial direction perpendicular to the shaft axis. Concentric capacitor rings are provided so that a bridge circuit can easily indicate differential capacitance which is proportional to clockwise or counter-clockwise torque.