Jib positioning with hydraulic adjustment cylinder

Details Jib positioning with hydraulic adjustment cylinder Jib positioning with hydraulic adjustment cylinder

1999-06-17

2000-12-26

Brahan, Thomas J.

Traversing hoists

Boom or mast

Extensible by sliding sections

212292, B66C 2304

Patent

active

061644684

ABSTRACT:
Apparatus for fixing the angular position of two telescopic parts relative to each other, comprising a stopper arranged on the first telescopic part and an adjuster provided with a shiftable element arranged on the second telescopic part. The adjuster comprises a piston/cylinder unit arranged on the inner telescopic part, which may be actuated by fluid supply and discharge, as well as an arrangement and method for fixing two telescopic parts of a crane jib.

REFERENCES:
patent: 3782790 (1974-01-01), Benkowski
patent: 3830376 (1974-08-01), Fritsch
patent: 3836011 (1974-09-01), Sakamoto et al.
patent: 3863406 (1975-02-01), Quick
patent: 3921819 (1975-11-01), Spain
patent: 3931698 (1976-01-01), Ebersold
patent: 4337601 (1982-07-01), Vaerk et al.
patent: 5628416 (1997-05-01), Frommelt et al.

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