Electricity: motive power systems – Motor-reversing
Patent
1990-02-23
1990-10-09
Ro, Bentsu
Electricity: motive power systems
Motor-reversing
318266, 318267, 318286, 318469, 49 28, E05F 1516, H02P 122
Patent
active
049623370
ABSTRACT:
A circuit for controlling bi-directional operation of a vehicle window lift motor having a toroidal coil sensing counter-emf perturbations in the motor current line. An EXPRESS mode switch, upon momentary actuation, latches an electronic switch to operate a relay to provide continuous motor rotation for lowering the window. Subsequent momentary switch actuation unlatches the electronic switch to cut interrupt window motor current. Window lift motor stall is detected by a toroidal coil which senses loss of motor line perturbations and unlatches the electronic switch to open circuit the motor relay.
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Eaton Corporation
Johnston R. A.
Ro Bentsu
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