Safety detection system for sliding doors

Details Safety detection system for sliding doors Safety detection system for sliding doors

1997-06-23

1999-03-23

Nappi, Robert E.

Textiles: fiber preparation

187393, 49 26, 49 25, B66B 1326

Patent

active

058863079

ABSTRACT:
A safety system for detecting objects or persons that approach closing doors includes a plurality of detectors on one door and a plurality of transmitters on an opposite door. The plurality of transmitters emit a signal at an angle into a hallway. The intensity of the signal emitted from the transmitters is progressively reduced as the distance between the closing doors is decreasing. The reduction in intensity of the transmitted signal allows discrimination between actual targets and false targets.

REFERENCES:
patent: Re30719 (1981-08-01), Mills
patent: 3852592 (1974-12-01), Scoville et al.
patent: 4029176 (1977-06-01), Mills
patent: 4794248 (1988-12-01), Gray
patent: 4851746 (1989-07-01), Milke
patent: 4894952 (1990-01-01), Trett et al.
patent: 5142152 (1992-08-01), Boiucaner
patent: 5149921 (1992-09-01), Picado
patent: 5420430 (1995-05-01), Trett
patent: 5567931 (1996-10-01), Amend et al.
patent: 5698824 (1997-12-01), Platt

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