Method and apparatus for detecting a defective object on a lane

Details Method and apparatus for detecting a defective object on a lane Method and apparatus for detecting a defective object on a lane

1980-04-21

1982-05-25

Hubler, Malcolm F.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

191 10, 246187C, H01Q 1700, B61L 300

Patent

active

043319599

ABSTRACT:
A defective object such as a vehicle normally movable on a lane, assembly ne, or track is detected by a receiver on another object travelling behind the defective object, to avoid rear end collisions with the defective vehicle. For this purpose the vehicles are equipped with a signal receiver and with a signal damping member. The signal is transmitted in a transmission line extending along the lane, assembly line, or track. When a defect occurs, the damping member is moved into a position relative to the transmission line in which the damping member sufficiently dampens the signal so that the next following vehicle fails to receive the signal whereby a warning may be provided that the path ahead is not free or that it is blocked.

REFERENCES:
patent: 2898561 (1959-08-01), Hayes
patent: 3293581 (1966-12-01), Joyce
patent: 3365572 (1968-01-01), Strauss
patent: 3408646 (1968-10-01), Simon et al.
patent: 3410996 (1968-11-01), Carrino
patent: 3919686 (1975-11-01), Narbaits-Jaureguy

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