Remote controlled crane hook coupler

Details Remote controlled crane hook coupler Remote controlled crane hook coupler

1984-04-02

1986-03-04

Cherry, Johnny D.

Handling: hand and hoist-line implements

Hook, hoistline, or grab type

Load releasing means

24603, 294 662, 294 823, 294905, 403 27, 403322, B66C 134, B66C 166

Patent

active

045737258

ABSTRACT:
A remote operable coupler for rapidly connecting the loading hook of a crane, or the like, to a load to be hoisted comprises a load collar that is attached to the load and an upper unit support on the crane hook. The load collar has a funnel shaped aperture vertically aligned therethrough and the upper unit has a depending lifting tube that is lowered into and through the funnel in the collar. Steel balls are located in radial holes near the bottom of the lifting tube and normally are recessed into an annular groove near the bottom end of a cam rod in the bore of the lifting tube. The cam rod is automatically moved by an actuator controlled by a switch that detects the seating of the lifting tube in the load collar to force the balls outward and against a locking shoulder in the bottom of the load collar funnel, and disengagement of the balls is made by a remote operator by either a radio control signal or an electrical signal that reverses the movement of the linear actuator and the cam shaft thus permitting the balls to fall back into the annular groove.

REFERENCES:
patent: 2763451 (1956-09-01), Moran
patent: 3154337 (1964-10-01), Walker
patent: 3319978 (1967-05-01), Melhose
patent: 3430305 (1969-03-01), Geffner
patent: 4214842 (1980-07-01), Franks

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