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. 13, 1980
Filed:
Mar. 27, 1978
Reimer Homann, Reinheim, DE;
Prodromos Raptopoulos, Gross-Zimmern, DE;
Firma Carl Schenck Aktiengesellschaft, Darmstadt, DE;
Abstract
The performance of an eddy current brake is controlled by controlling the magnetic flux in its housing by changing the energizing voltage of the energizing coil of the brake in accordance with a signal obtained by comparing a signal representative of the desired brake performance with a signal representative of the actual magnetic flux measured in the housing at a location of substantially homogeneous flux distribution. The desired performance signal may be a signal representative of the difference between a desired rotational speed signal and the actual rotational speed signal, or it may be a signal representative of the difference between a desired torque signal and an actual torque signal. The desired performance signal may also be a signal representative of the difference between a signal obtained by comparing desired and actual rotational speed signals with a signal representative of actual torque. A Hall generator is used to measure actual flux. The Hall generator is located in the housing at a spot having said substantially homogeneous flux distribution.