Movable or removable closures – Radiant energy control
Patent
1986-06-13
1987-06-02
Downey, Kenneth
Movable or removable closures
Radiant energy control
49 28, 49264, 250221, E05F 1520
Patent
active
046692185
ABSTRACT:
An automatic door installation with two traffic sensors mounted on each side of the door adjacent the opposite side edges thereof, each having a reflected energy receiver and a plurality of radiant energy emitters with angularly spaced beam axes to provide broad coverage areas intersecting the traffic path of travel. The emitters of each sensor are selectively activated at different radiant energy levels and/or selectively deactivated to vary the effective coverage area as the door is swung between its closed and open positions.
REFERENCES:
patent: 4467251 (1984-08-01), Jonsson
patent: 4560912 (1985-12-01), Jonsson
patent: 4590410 (1986-05-01), Jonsson
Installation Manual US-021 Vision Pulse (pp. 0984-1005), Besam Inc.
Installation Instructions and Service Guide--Multiscan Kawneer Architectural Products, (pp. 1063-1080).
Multiscan/Swingmatic-HC Hook-Up & Service Kawneer Architectural Products (pp. 1103-1115).
Cirkot David M.
Kornbrekke Henning N.
Ranaudo Anthony R.
Downey Kenneth
The Stanley Works
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