Crane assembly

Details Crane assembly Crane assembly

1980-07-07

1983-04-05

Jillions, John M.

Implements or apparatus for applying pushing or pulling force

Device or member for contacting and guiding moving cable

Including rotatable, cable contacting, pulley wheel element

52148, B66D 304

Patent

active

043789331

ABSTRACT:
The device features the elimination of bending moments in all members to ow a design of minimal weight, and depends on the use of an existing structure to provide stabilizing reactions when erected. A rigid mast is pivoted at its lower end on the existing structure, and supports a block and tackle at its upper end. A rigid triangular spreader and cable assemblies support the mast.

REFERENCES:
patent: 1109148 (1914-09-01), Rudd et al.
patent: 1985509 (1934-12-01), Lemont
patent: 2203113 (1940-06-01), Uecker et al.
patent: 2557852 (1951-06-01), Winkel
patent: 2581351 (1952-01-01), Black
patent: 2705061 (1955-03-01), Getz
patent: 2736398 (1956-02-01), Peterson

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