Traversing hoists – Having means facilitating assembly or disassembly – Of traversing hoist from support
Patent
1985-06-13
1986-12-30
Blix, Trygve M.
Traversing hoists
Having means facilitating assembly or disassembly
Of traversing hoist from support
2807641, 2807651, B66C 2378
Patent
active
046322620
ABSTRACT:
A retractable leg structure for undecking a crane's upper from its carrier including a box member having a circular cross section and a longitudinal axis affixed to the upper, a beam retained within the box and rotatable about the longitudinal axis relative thereto, and an L-shaped leg, including a tubular member having a free end hinged to the beam, the leg being manually swingable about the hinged connection between a stowed position in which the tubular member is oriented horizontal and inboard of the upper and a deployed position in which the tubular member is horizontal and outboard of the upper. There is a lock pin device for selectively securing the leg in one of the deployed and stowed positions, and an extendable jack secured to the fee end of the tubular member along with a crank arm attached to the beam. A hydraulic ram connected to the crank arm moves the leg between the deployed position and an operative position wherein the tubular member is oriented vertically adjacent to the ground.
REFERENCES:
patent: 1873433 (1932-08-01), Larsen
patent: 3836012 (1974-09-01), Grider et al.
patent: 4241803 (1986-12-01), Lauber
patent: 4245855 (1981-01-01), Larson
patent: 4273244 (1981-06-01), Jensen et al.
patent: 4407419 (1983-10-01), Clements
Evenson Marvin E.
Kappel Gary W.
Olsen David W.
Wittman Leroy L.
Blix Trygve M.
FMC Corporation
Johnson R. B.
Kamp Ronald C.
Megley Richard B.
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