Braking device for ladder lifter

Details Braking device for ladder lifter Braking device for ladder lifter

1975-08-14

1977-06-28

Machado, Reinaldo P.

Fire escape, ladder, or scaffold

Ladder with vertically moving platform or escape

Ladder supports platform

E06C 712

Patent

active

040319806

ABSTRACT:
There is provided a cam type braking device for a ladder lifter arranged so that as soon as the lifting wire rope for the ladder lifter is broken, a brake cam is pressed against the associated ladder rail, whereby the lifter is braked and it is securely stopped at the position on the rail which it assumed at the time of breakage of the wire rope, without causing any large fall of the lifter.

REFERENCES:
patent: 844947 (1907-02-01), Lowry
patent: 855646 (1907-06-01), Lehn
patent: 1218285 (1917-03-01), Lewandowski
patent: 2583907 (1952-01-01), Vaydo
patent: 3693755 (1972-09-01), Terayama
patent: 3887038 (1975-06-01), Buschbom

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