Crane boom locking pin insertion indicator and actuator means

Details Crane boom locking pin insertion indicator and actuator means Crane boom locking pin insertion indicator and actuator means

1981-11-05

1987-01-13

Blix, Trygve M.

Traversing hoists

Having horizontally swinging boom or bridge

Extensible by movement of boom or boom segment along...

212157, 212264, 212268, 212269, 52118, 52115, 74110, B66C 2304, B66C 1316, B66C 2306

Patent

active

046358056

ABSTRACT:
A power actuator on the base section of a multi-section telescoping crane boom can bridge at least one intermediate boom section to operate a biased locking pin retract mechanism employed in a system for remotely controlling the operation of a manual fly section of the telescoping boom. To enable the crane operator to know with certainty that the biased locking pin is in a fully engaged position, a visual indicator on the boom readily viewable from the crane operator's cab is directly mechanically linked to the biased locking pin and moves to the indicating position only when the locking pin is fully engaged.

REFERENCES:
patent: 2924107 (1960-02-01), Fiesard et al.
patent: 3346281 (1967-10-01), Thompson
patent: 3386594 (1968-06-01), Grove
patent: 3738075 (1973-06-01), Hansel
patent: 3842985 (1974-10-01), Svede
patent: 3921819 (1975-11-01), Spain
patent: 4053058 (1977-10-01), Jensen et al.
patent: 4198909 (1980-04-01), Plantureux
patent: 4327533 (1982-04-01), Sterner
patent: 4352434 (1982-10-01), Poock
patent: 4433515 (1984-02-01), Mentzer
Mechanism, Linkages, and Mechanical Controls by N. P. Chironis; pp. 80-81, "10 Ways to Change Straight-Line Direction", 1965.

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