Handling: hand and hoist-line implements – Grapple – Pivoted jaws
Patent
1992-05-04
1992-12-15
Cherry, Johnny D.
Handling: hand and hoist-line implements
Grapple
Pivoted jaws
294 90, B66C 166
Patent
active
051710536
ABSTRACT:
There is disclosed a lifting device particularly suited for lifting plastic drums or barrels while maintaining the same vertically upright and transporting the same to another location. The lifting device is unique in that it employs a locking bar which is capable of locking the device in both the open position preparatory for securing the barrel, and the grasping/lifting position. It maintains either of these locked positions regardless of whether an upward force is exerted upon the pair of pivotal tongs. Unlike other pivoted lifting devices or tongs, the present invention uses a minimal amount of friction force to lift a barrel, such that the fragile resilient sides of a plastic barrel are not damaged.
REFERENCES:
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patent: 1350053 (1920-08-01), Awischus
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patent: 2327005 (1943-08-01), Babcock et al.
patent: 2617678 (1952-11-01), Kelso
patent: 2758869 (1956-08-01), Shaw
patent: 3273931 (1966-09-01), Caldwell et al.
patent: 3352591 (1967-11-01), Casey
patent: 3790204 (1974-02-01), Lighthipe et al.
Cherry Johnny D.
Ro-Von Steel Ltd.
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