Power window apparatus having improved safety device

Details Power window apparatus having improved safety device Power window apparatus having improved safety device

1993-04-15

1994-10-04

Kannan, Philip C.

Movable or removable closures

Safety means responsive to obstruction to closure

Closure drive stopping or reversal

49 31, 49349, 49506, E05F 1516

Patent

active

053514394

ABSTRACT:
A power window apparatus with a safety device capable of taking a safety measure when it detects the neck or hand of a passenger being caught in the window, which device can exactly detect such a dangerous state and take a reliable safety measure to correct for the same, irrespective of variations of ambient temperature. A temperature sensor provided which senses the temperature of the motor acting as a drive source for moving the window. This temperature is closely related to the ambient temperature. A reference value for the motor speed for detecting an object-caught state is altered according to the detected temperature, thereby providing exact detection of the object-caught state irrespective of temperature variations. Preferably, the power transmission for the window, the temperature sensor, and a controller structure are mounted on an inner side of a single housing.

REFERENCES:
patent: 4641067 (1987-02-01), Iizawa et al.
patent: 4701684 (1987-10-01), Seidel et al.
patent: 4831509 (1989-05-01), Jones et al.
patent: 4943757 (1990-07-01), Richter et al.

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