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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.:

US 4916390 B1

PDFFull Text
Date of Patent:
Apr. 10, 1990

Filed:

Feb. 17, 1989

Coil spring toothed wheel for use in measuring an angular velocity

Applicant:
Inventors:

Arno Christoleit, Hanover, DE;

Lutz Piesbergen, Barsinghausen, DE;

Reinhard Schmidt, Lehrte, DE;

Assignee:

Wabco Westinghouse Fahrzeugbremsen GmbH, Hanover, DE;

Attorney:

Ray, Jr.; James O.

Primary Examiner:

Reinhard J Eisenzopf

Assistant Examiner:

Walter E Snow

Int. Cl.
CPC ...
G01B / ; G01P / ; G01P / ; H02K / ;
U.S. Cl.
CPC ...
324174 ; 324262 ; 32420722 ; 310168 ;
Abstract

The invention consists of a toothed wheel which in conjunction with a fixed sensor measures the revolutions or the angular velocity of a rotating component. The toothed wheel is constructed as a coil spring mounted on a circular ring-shaped mounting device and moved around a pivot with the rotation motion to be measured. The coil spring consists of an infinite helix the windings of which are of ferromagnetic material. Since the coil spring is moved past the fixed sensor, the change of the magnetic field in the coil of the sensor causes the generation of an alternating voltage the frequency of which is substantially proportional to the angular velocity of the toothed wheel.

Find Patent Forward Citations

Christoleit, Arno. (1990). Coil spring toothed wheel for use in measuring an angular velocity (U.S. Patent No. 4916390). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4916390

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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