Hoisting crane for building purposes

Details Hoisting crane for building purposes Hoisting crane for building purposes

1976-03-22

1978-08-29

Cline, William R.

Fluid handling

Systems

Articulated or swinging flow conduit

212 8A, 214763, B67D 500

Patent

active

041096819

ABSTRACT:
A hoisting crane is of the type comprising a tower and at the top region thereof one inner and one outer jib section which are pivotably mounted. The jib sections have roughly the same length and are by a means slewed relative to the tower, whereby the outer end of the outer jib section -- which carries a hoist controlled lifting hook-- always takes substantially the same level. A pipe for pumping of concrete to a portioning means at the outer end of the outer jib section is attached to the tower and the two jib sections. Rotary couplings are provided coaxial with the pivot axes.

REFERENCES:
patent: 3085593 (1963-04-01), Sorensen
patent: 3651832 (1972-03-01), Meyer
patent: 3707990 (1973-01-01), Schaible et al.

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