Traffic responsive control system

Movable or removable closures – Radiant energy control

Patent

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Details

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).

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