Fire escape – ladder – or scaffold – Means maintaining platform level on angularly movable support – Swingable support
Patent
1983-07-01
1985-04-23
Machado, Reinaldo P.
Fire escape, ladder, or scaffold
Means maintaining platform level on angularly movable support
Swingable support
B66F 1104
Patent
active
045124361
ABSTRACT:
A mechanism for rotating an aerial platform carried on the upper end of a truck mounted aerial boom assembly. The upper boom tip carries a rotatable platform pin to which a rigid beam is secured to extend forwardly beyond the boom tip. The platform is a bucket mounted on the forward end of the beam for rotation about a vertical axis displaced well forwardly from the axis of the platform pin. A hydraulic cylinder rotates the bucket about its vertical rotational axis through a 90.degree. arc between a side hung position alongside the upper boom tip and an end hung position beyond the end of the boom tip. A spring loaded locking pin locks the bucket in the end hung position and provides a safety device that prevents the bucket from being rotated against a material handling jib that may be used in the side hung position of the bucket.
REFERENCES:
patent: 655923 (1900-08-01), Dutton
patent: 2026535 (1936-01-01), Hooker
patent: 3056510 (1962-10-01), Garnett
patent: 3841436 (1974-10-01), Grove
patent: 4271926 (1981-06-01), Cullity
"Platform rotator", figure 15, copy submitted by applicant.
"Pitman Manufacturing Co.", Canada copy submitted by applicant.
Anderson Carl M.
Freudenthal Frank D.
Altec Industries, Inc.
Machado Reinaldo P.
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