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. 10, 2005
Filed:
Jan. 23, 2001
Karlheinz Mayr, Bregenz, DE;
Markus Eisele, Friedrichshafen, DE;
Robert Ingenbleek, Kressbronn, DE;
Walter Kill, Friedrichshafen, DE;
Hubert Remmlinger, Friedrichshafen, DE;
Jochen Fischer, Friedrichshafen, DE;
Bernd Fessler, Kressbronn, DE;
Karlheinz Mayr, Bregenz, DE;
Markus Eisele, Friedrichshafen, DE;
Robert Ingenbleek, Kressbronn, DE;
Walter Kill, Friedrichshafen, DE;
Hubert Remmlinger, Friedrichshafen, DE;
Jochen Fischer, Friedrichshafen, DE;
Bernd Fessler, Kressbronn, DE;
ZF Friedrichshafen AG, Friedrichshafen, DE;
Abstract
Method for control of a proportional magnet comprising a magnet core, a magnet armature, a magnet coil for operating a control element in a shift valve or a proportional pressure-control valve, particularly a pressure-control valve for clutch operation in an automatic motor vehicle transmission, and comprising an electronic control device, whereby the magnet core may be moved back and forth between a control region and a hold region with a magnetic hold position of the magnet armature and a defined transition from the control region to the hold position may be executed and whereby mechanisms are provided for recognition of the movements of the magnet armature.