Electricity: motive power systems – Automatic and/or with time-delay means – Radiant energy
Patent
1984-05-21
1986-05-20
Miska, Vit W.
Electricity: motive power systems
Automatic and/or with time-delay means
Radiant energy
318450, 318460, 318467, 250221, 2502221, 340355, 340356, G05B 500
Patent
active
045904103
ABSTRACT:
An object sensing apparatus includes a plurality of light emitting diodes for illuminating a region of space and a plurality of closely arranged light detectors for receiving light reflected from an object. The apparatus is particularly useful in connection with automatically operated doors.
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Advertising Brochure entitled, "Multiscan Optical Electronic Door Control System for Swingmatic Entrances", Kawneer Architectural Products.
Ip Shik Luen Paul
Miska Vit W.
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