Automatic anti-trap device

Details Automatic anti-trap device Automatic anti-trap device

2006-06-07

2008-07-01

Masih, Karen (Department: 2837)

Electricity: motive power systems

Automatic and/or with time-delay means

Movement, position, or limit-of-travel

C318S468000, C318S472000, C318S473000, C318S476000, C318S477000

Reexamination Certificate

active

07394216

ABSTRACT:
An automatic anti-trap device is provided to add safety to other apparatuses. The automatic anti-trap device of this invention has a driving circuit to control a motor, a current sensor to generate a current signal, a current ripple peak value circuit to generate a current ripple peak value signal according to the current signal, and a micro processor to generate a working signal for the driving circuit to control the motor according to a keystroke signal, the current signal and the current ripple peak value signal.

REFERENCES:
patent: 5530329 (1996-06-01), Shigematsu et al.
patent: 5592777 (1997-01-01), Petri et al.
patent: 2004/0178758 (2004-09-01), Shinohara

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