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:
Jun. 12, 2001
Filed:
Jan. 13, 1999
Walter Schlagenhaft, Kempten, DE;
Saurer-Allma GmbH, Kempten, DE;
Abstract
The electromagnetic hysteresis brake, especially a yarn brake for textile machines, comprises a stationary brake magnet (,), which consists of inner and outer pole ring parts (,) and a magnet winding (,), and a rotating armature (,), which is connected to a hysteresis ring (,) of permanent magnetic material. The hysteresis ring (,) projects into an annular air-gap (,) of the brake magnet (,), which is formed between the inner and outer pole ring parts (,). At least one permanent magnet (,) is so arranged adjacent the magnet winding (,) that the magnetic field in the air-gap (,) is formed by cooperation of the magnetic fluxes of the electromagnet (,) and the permanent magnet (,). The magnetic flux of the electromagnet (,) can be adjusted in magnitude and direction in the gap by corresponding poling that it assists or counteracts the magnetic flux of the permanent magnet.