Electricity: motive power systems – Automatic and/or with time-delay means – Radiant energy
Patent
1995-05-05
1999-09-21
Cabeca, John W.
Electricity: motive power systems
Automatic and/or with time-delay means
Radiant energy
318264, 318283, 318445, 49 26, 49 28, 340540, 340901, H02P 122
Patent
active
059558547
ABSTRACT:
An obstruction detection apparatus is provided for use in closing a power driven vent, such as a window, that is located in an opening. When the vent includes a first closing edge that moves as the vent is closed and the opening includes a second closing edge that is contacted by the first closing edge when the vent is in a fully closed position, the apparatus includes a detector configured to detect an obstruction at points all along the second closing edge without requiring contact between the obstruction and the vent and to deliver a detection signal when an obstruction is detected. A controller is connected to the detector for receiving the detection signal and delivering a corresponding alarm signal.
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Chen Ziqiang
Chuang Cliff
Li James S.
Lu Michael Yuan
Pan Peter J.
Cabeca John W.
Prospects Corporation
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