Safety apparatus for a motor driven window

Details Safety apparatus for a motor driven window Safety apparatus for a motor driven window

1989-05-23

1990-07-24

Ro, Bentsu

Electricity: motive power systems

Automatic and/or with time-delay means

Movement, position, or limit-of-travel

318256, 318286, 49 28, E05F 1508, H02P 122

Patent

active

049437577

ABSTRACT:
There is disclosed a safety apparatus for a motor driven window that comprises an elongated sensing mechanism that extends substantially across the width of a window aperture and along that side of the window aperture toward which a closing, motor driven window moves. Such elongated sensing mechanism is comprised, at least in part, of a piezoelectric cable for generating electrical pulses upon an obstruction extending across the path of the closing window being pushed against the sensing mechanism by the closing window. Coupled to the motor driven window is an electric motor that is connected so as to be responsive to the electrical pulses generated by the piezoelectric cable for automatically reversing the direction of rotation of the electric motor.

REFERENCES:
patent: 3465476 (1969-09-01), Rayner et al.
patent: 3689814 (1972-09-01), Holt
patent: 4351016 (1982-09-01), Felbinger
patent: 4490639 (1984-12-01), Echols et al.
patent: 4580074 (1986-04-01), Gilman
patent: 4621223 (1986-11-01), Murakami et al.
patent: 4631461 (1986-12-01), Peugeot

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