Lock mechanism for crane device

Details Lock mechanism for crane device Lock mechanism for crane device

1987-02-17

1988-11-15

Basinger, Sherman D.

Traversing hoists

Having horizontally swinging boom or bridge

Having trolley thereon

74531, 182 2, 188 729, 188265, B66F 1104

Patent

active

047842784

ABSTRACT:
A crane apparatus is provided with a lock mechanism which releasably locks the pivot axle of the personnel bucket against pivotal movement relative to the upper boom arm. The pivot axle is affixed to the bucket and projects through and is journaled on the upper boom arm. Locking elements are affixed to the pivot axle and clamping elements are affixed to and mounted within the upper boom arm. A locking bolt is operable to cause the clamping elements to be clamped against the locking elements and to lock the pivot axle against pivotal movement relative to the upper boom arm.

REFERENCES:
patent: 2509271 (1950-05-01), Jeffery
patent: 2950121 (1960-08-01), Fisher
patent: 3146853 (1964-09-01), Eckels
patent: 3196979 (1965-07-01), Garnett
patent: 3467217 (1969-09-01), Zwight
patent: 3590948 (1971-07-01), Milner
patent: 3648956 (1972-03-01), Paulson et al.
patent: 3727722 (1973-04-01), Hedges et al.
patent: 3830336 (1974-08-01), Reimbold et al.
patent: 4352415 (1982-10-01), Powell

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