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:
Dec. 07, 2004
Filed:
Feb. 21, 2003
Rudolf Schneider, Meckenbeuren, DE;
Helmut Fronius, Immenstaad, DE;
ZF Friedrichshafen AG, Friedrichshafen, DE;
Abstract
The invention proposes an electromagnetically actuated, single-surface friction coupling without a rotor slip-ring, having a rotor element ( ), a fixed magnet body ( ) and a pot-shaped armature element ( ) mounted so that it can be displaced axially. A cylindrical jacket shaped area ( B) of the armature element ( ) extends with a narrow air gap along an outer jacket surface ( ) of the magnet body ( ). Between the armature element ( ) and a friction surface ( ) of the rotor element there is a working air gap (S) that can be bridged. To keep the moment of inertia on the drive output side as small as possible, it is proposed to arrange the rotor element ( ) on the drive output side and the armature element ( ) on the drive input side.