Removable live mast and hoist unit

Details Removable live mast and hoist unit Removable live mast and hoist unit

1981-04-24

1983-12-20

Blix, Trygve M.

Traversing hoists

Having means facilitating assembly or disassembly

Of traversing hoist from support

212182, 212183, 212262, B66C 2326, B66C 112

Patent

active

044212410

ABSTRACT:
A removable live mast and hoist unit is disclosed for use with a crane of the type having a pivotal live mast releasably connected to the boom of a crane for raising and lowering the boom. The unit includes the live mast and a boom hoist frame that are rigidly secured together with the boom hoist, reeving, mast bridle and bail all partially enclosed within portions of the mast and a cavity in the frame to protect the reeving and to permit easy removal of the unit without unwinding the reeving.

REFERENCES:
patent: 948851 (1910-02-01), Forest
patent: 3045837 (1962-07-01), Liebherr et al.
patent: 3053398 (1962-09-01), Liebherr et al.
patent: 3187906 (1965-06-01), Bushong et al.
patent: 3335877 (1967-08-01), Pezzini
patent: 3399785 (1968-09-01), Mork
patent: 3664516 (1972-05-01), Goudy
patent: 3792781 (1974-02-01), Blase et al.
patent: 3794184 (1974-02-01), Higgins
patent: 3977530 (1976-08-01), Helm et al.
patent: 3977531 (1976-08-01), Brewer
patent: 4081081 (1978-03-01), Morrow, Sr.

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