Handling: hand and hoist-line implements – Hoistline attached load supporting frame – Load capturing supports
Patent
1984-12-04
1986-08-12
Marbert, James B.
Handling: hand and hoist-line implements
Hoistline attached load supporting frame
Load capturing supports
2941191, 414621, B66C 166
Patent
active
046052550
ABSTRACT:
A carton clamp having a frame adapted to be mounted on a materials-handling machine, especially an automatically guided vehicle, includes clamp arms coupled directly together, independently of the frame, by motor-driven screw-type linear actuators which selectively open and close the arms. A centering assembly coupled to each clamp arm corrects for any imbalance of clamp arm speeds relative to the frame which may occur due to the fact that the screw actuators are free to move relative to the frame. The direct interconnection of the clamp arms by the screw actuators effectively doubles the clamping force which would otherwise be obtainable if the actuators were fixed to the frame.
REFERENCES:
patent: 2618502 (1952-11-01), Breslav
patent: 2706570 (1955-04-01), Jewell et al.
patent: 2726780 (1955-12-01), Rodman
patent: 2846018 (1958-08-01), Puckett
patent: 2911793 (1959-11-01), Arnot
patent: 2959445 (1960-11-01), Breslav
patent: 3166707 (1965-01-01), Quayle
patent: 4049140 (1977-09-01), Roose
patent: 4381166 (1983-04-01), Smart
Cascade Corporation
Marbert James B.
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