Rotation detecting apparatus
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United States of America Patent
Stats
-
Apr 23, 1985
Grant Date -
N/A
app pub date -
Mar 7, 1983
filing date -
Mar 15, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A rotation detecting apparatus for a power steering system of a vehicle is described which comprises a control valve coupled to a steering shaft of a steering wheel of the vehicle for controlling a flow of power fluid supplied to a power cylinder for powering a steering operation, a rotator magnet secured on an input shaft of the control valve to rotate therewith as a body, a concentric-circle shaped stator coil adapted to face to the rotor magnet, and a casing functioning also as an iron core yoke mounted on a housing of the control valve for receiving the rotor magnet and the stator coil and supporting the stator coil, whereby, when the input shaft is rotated in response to the steering operation of the steering wheel, an electromotive force is produced so as to detect a displacement in rotation of the input shaft.
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