Power window apparatus with safety device
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United States of America Patent
Stats
-
Apr 11, 1995
Grant Date -
N/A
app pub date -
Jun 21, 1993
filing date -
Jun 26, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A power window apparatus for carrying out a safety control operation when an object is caught in the window, which apparatus is capable of setting a safety control mode disabling region to within the required distance exactly. The power window apparatus includes a motor rotation sensor for sensing a state of rotation of the motor, and a window movement sensor for sensing the amount of movement of the window. The object-caught state is detected on the basis of the rotational rate of the motor, and the absolute position of the window is detected on the basis of the detected amount of movement of the window. The safety control mode is disabled in response to the detected absolute position of the window. A reference value for detecting the object-caught state may be varied as the window approaches its fully closed position.
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Cited Art Landscape
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