초록 ▼

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 e

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.

대표청구항 ▼

[ What is claimed is:] [1.] Apparatus for closing a power driven vent within an opening, the vent including a first closing edge that moves as the vent is closed and the openining including a second closing edge that is contacted by the first closing edge when the vent is in a fully closed position,

[ What is claimed is:] [1.] Apparatus for closing a power driven vent within an opening, the vent including a first closing edge that moves as the vent is closed and the openining including a second closing edge that is contacted by the first closing edge when the vent is in a fully closed position, the apparatus comprising:a housing,an emitter held by the houing and configured to emit energy across an area defined by the opening,a detector held by the housing and configured to detect energy from the emitter reflected by an obstruction without requiring contact between the obstruction and the vent and to deliver a detection signal in response to detection of reflected energy from the emitter, anda controller connected to the detector for receiving the detection signal and delivering an output signal indicative of whether an obstruction is present in the opening,wherein the vent comprises a window, and the housing holding both the emitter and the detector is positioned in a lower front corner of the opening.