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:
Mar. 07, 2006
Filed:
Sep. 11, 2003
Conny Johansson, H{hacek over (a)}sselby, SE;
Lars Nygren, Stockholm, SE;
Bruno Slettenmark, J{hacek over (a)}rf{hacek over (a)}lla, SE;
Conny Johansson, H{hacek over (a)}sselby, SE;
Lars Nygren, Stockholm, SE;
Bruno Slettenmark, J{hacek over (a)}rf{hacek over (a)}lla, SE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
An electromagnetic brake assembly has a brake shoe) movable between a first position at which it is located in a braking engagement with a movable surface and a second position at which it is located out of braking engagement with the movable surface. An electromagnet is energizable to bias the shoe to one or other of the first and the second positions and a power supply is provided having a direct current source for supplying a direct current flow to energize the electromagnet. The power supply further has an alternating current source that provides an alternating current flow through the electromagnet with a successively decreasing amplitude characteristic, after interruption of the direct current flow.