Electricity: electrical systems and devices – Control circuits for electromagnetic devices – Systems for magnetizing – demagnetizing – or controlling the...
Reexamination Certificate
2005-05-10
2005-05-10
Reichard, Dean A. (Department: 2831)
Electricity: electrical systems and devices
Control circuits for electromagnetic devices
Systems for magnetizing, demagnetizing, or controlling the...
C361S154000, C361S170000, C361S143000, C361S210000, C361S142000, C335S153000, C335S202000, C335S219000
Reexamination Certificate
active
06891710
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.
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Eisele Markus
Fessler Bernd
Fischer Jochen
Ingenbleek Robert
Kill Walter
Davis & Bujold P.L.L.C.
Harris Anton
Reichard Dean A.
ZF Friedrichshafen AG
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