Clamping arrangement for a lift mast

Details Clamping arrangement for a lift mast Clamping arrangement for a lift mast

1989-06-29

1991-06-25

Werner, Frank E.

Material or article handling

Elevator or hoist and loading or unloading means therefor

Grab

414785, 414621, 414730, 187 9R, 294907, 294 88, 901 34, 901 47, 901 37, B66F 918

Patent

active

050262459

ABSTRACT:
A clamping arrangement for stabilizing a load carried on an elevationally movable load engaging device of a material handling lift mast has a clamp movably connected to the load engaging device and an actuator for moving the load engaging clamp between first and second spaced apart locations in response to the actuator being moved between extended and retracted positions. A connecting device connects the actuator to the load engaging device and maintains the load engaging clamp from movement toward the second position in response to engagement between the load engaging clamp and the load and provides a preselected amount of movement of the actuator relative to the load engaging clamp subsequent to engagement between the load engaging clamp and the load and thus reduces the potential of damaging the load. The clamping arrangement is particularly suited for use on an automatic guided vehicle.

REFERENCES:
patent: 1876219 (1932-09-01), Gfrorer
patent: 2635774 (1953-04-01), Backofen et al.
patent: 2661857 (1953-12-01), McNutt
patent: 3024929 (1962-03-01), Shimmon
patent: 4029230 (1977-06-01), Bolduc et al.
patent: 4341354 (1982-07-01), Liet et al.
patent: 4579380 (1986-04-01), Zaremsky et al.
patent: 4600357 (1986-07-01), Coules
patent: 4726729 (1988-02-01), Olson et al.
patent: 4751983 (1988-06-01), Leskovec et al.

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