Extensible boom lift

Details Extensible boom lift Extensible boom lift

1978-01-30

1979-07-31

Paperner, L. J.

Material or article handling

Vertically swinging load support

Shovel or fork type

182 2, 414728, E02F 370

Patent

active

041628730

ABSTRACT:
A workpiece lift including a pivotable boom with a pivot end that moves horizontally as the load end of the boom is raised and lowered, allowing the load end to move along a substantially vertical line. In a preferred embodiment the load end of the boom terminates in a workpiece arm which supports a workpiece and which extends downwardly from the load end of the boom so that the workpiece may be lifted upwardly and outwardly in an arc.

REFERENCES:
patent: RE23466 (1952-03-01), McElhinney et al.
patent: 2598685 (1952-06-01), Greenlief
patent: 2767869 (1956-10-01), Miller
patent: 3178046 (1965-04-01), Lull
patent: 3967744 (1976-07-01), Goyarts
patent: 4054185 (1977-10-01), Stedman
patent: 4070807 (1978-01-01), Smith

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