Power window with detecting function of sticking of foreign matt

Details Power window with detecting function of sticking of foreign matt Power window with detecting function of sticking of foreign matt

1998-04-30

1999-10-12

Lefkowitz, Edward

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340545, 318257, 318266, 318434, 318469, 49 26, 49 28, B60J 108

Patent

active

059660716

ABSTRACT:
To improve the detection reliability in the detection of sticking of a foreign matter and minimize a sticking load, a power window is provided with a window frame sensor disposed along the inner peripheral edge of a window frame and a drive motor for advancing and retreating a window glass in accordance with an external signal. A control circuit makes a duty control for a transistor to decrease the operating speed of the window glass when the pressure detected by the window frame sensor becomes larger than a predetermined value during a closing operation of the window glass. Thereafter, when the drive load of the drive motor exceeds a predetermined value, a relay is switched over to operate the window glass reverse in the opening direction.

REFERENCES:
patent: 5187381 (1993-02-01), Iwasa et al.
patent: 5404673 (1995-04-01), Takeda et al.
patent: 5459962 (1995-10-01), Bonne et al.
patent: 5483135 (1996-01-01), Parks
patent: 5621293 (1997-04-01), Heller et al.
patent: 5661385 (1997-08-01), McEwan
patent: 5754017 (1998-05-01), Tsuge et al.
patent: 5774046 (1998-06-01), Ishihera et al.
Patent Abstracts of Japan, vol. 095, No. 004, May 31, 1995, JP 07 004137.

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