High load clearance sensors

Details High load clearance sensors High load clearance sensors

1977-12-22

1979-05-29

Waring, Alvin H.

Communications: electrical

Selective

Having indication or alarm

340 87, 200 6142, G08B 2100, H01H 316

Patent

active

041568656

ABSTRACT:
In combination with a vehicle, an upwardly extending mast adapted to contact an overhead obstruction, and signalling the driver of the vehicle the presence of the obstruction.

REFERENCES:
patent: 2554371 (1951-05-01), Marx
patent: 2834002 (1958-05-01), Nordslek
patent: 3269783 (1966-08-01), Kriz
patent: 3488461 (1970-01-01), Webb

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