Heavy duty crane

Details Heavy duty crane Heavy duty crane

1984-05-02

1986-09-30

Blix, Trygve M.

Traversing hoists

Having counterweight or counterbalancing means

Counterweight movable relative to load support

212195, B66C 2372

Patent

active

046142754

ABSTRACT:
A heavy duty crane which essentially includes in combination: a first mobile and swivellable base unit, a boom mounted on the first base unit, a second mobile and swivellable base unit, a counterweight mounted on the second base unit, a link frame interconnecting the two base units, and a gantry structure supported on and across the two base units, wherein the link frame includes a front frame having a fore end thereof connected to the first base unit and a rear frame having a rear end thereof detachably connected to the second base unit, the rear end of the front frame being detachably connectible to the fore end of the rear frame and to the second base unit.

REFERENCES:
patent: 3140857 (1964-07-01), Nickles
patent: 3202299 (1965-08-01), Decuir
patent: 3485383 (1969-12-01), Beduhn
patent: 3777900 (1973-12-01), Brewer
patent: 3836010 (1974-09-01), Lampson
patent: 3842984 (1974-10-01), Brown et al.
patent: 4170309 (1979-10-01), Lampson
patent: 4243148 (1981-01-01), Lampson
patent: 4258852 (1981-03-01), Juergens
patent: 4349115 (1982-09-01), Lampson
patent: 4508232 (1985-04-01), Lampson
"The Amazing Sky Horse" brochure (American).
"Transi-Lift" brochure (Lampson).
"Transi-Lift" brochure (Lampson).

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