Collapsible tower boom lift

Details Collapsible tower boom lift Collapsible tower boom lift

1987-10-08

1988-10-04

Machado, Reinaldo P.

Fire escape, ladder, or scaffold

Means maintaining platform level on angularly movable support

Swingable support

52117, 212268, 212261, B66F 1104

Patent

active

047750294

ABSTRACT:
A collapsible boom lift comprised of upper and lower telescoping boom assemblies. The upper boom is pivotally connected to an upright support member which is pivotally connected at its lower end to the lower boom. The upright support member is maintained plumb during raising and lowering of the lower boom, and the operator's platform, carried at the end of the upper boom, is maintained level during raising and lowering the upper boom. The upright support member is always positioned within the perimeter of the chassis of the boom lift.

REFERENCES:
patent: Re31400 (1983-10-01), Rallis et al.
patent: 2798623 (1957-07-01), Girardi
patent: 3554319 (1971-01-01), Smith et al.
patent: 3604533 (1971-09-01), Eckels et al.
patent: 3637043 (1972-01-01), Zwight
patent: 3708037 (1973-01-01), Tranchero
patent: 3776367 (1973-12-01), Grove
patent: 3777845 (1973-12-01), Ashworth
patent: 3791484 (1974-02-01), Harrison
patent: 3807575 (1974-04-01), Merrick
patent: 3856108 (1974-12-01), Grove
patent: 3866713 (1975-02-01), Carpenter et al.
patent: 4019604 (1977-04-01), Benson
patent: 4070807 (1978-01-01), Smith, Jr.
patent: 4160492 (1979-07-01), Johnston
patent: 4280589 (1981-07-01), Merrick
patent: 4511015 (1985-04-01), Purdy
patent: 4643273 (1987-02-01), Stokoe
patent: 4646875 (1987-03-01), Sholl
patent: 4667771 (1987-05-01), Tranchero

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