Working range indicating device for aerial ladder truck

Details Working range indicating device for aerial ladder truck Working range indicating device for aerial ladder truck

1975-02-12

1976-06-29

Machado, Reinaldo P.

Fire escape, ladder, or scaffold

With indicator, signal or alarm

182 66, E06C 504, E06C 534

Patent

active

039660176

ABSTRACT:
A working range indicating device for an aerial ladder truck is arranged so that the variable length and vertical angle of the ladder are mechanically detected and the detected values are indicated on a working range indicating board disposed at the operating stand by means of a single mechanically operable pointer. Merits and details of the construction will be made clear.

REFERENCES:
patent: 2772411 (1956-11-01), Cooper
patent: 3122125 (1964-02-01), Towne
patent: 3223249 (1965-12-01), Cady
patent: 3238521 (1966-03-01), Minogue
patent: 3566386 (1971-02-01), Hamilton

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