Handling: hand and hoist-line implements – Grapple – Fixed and moveable jaw
Patent
1977-03-18
1978-06-27
Cherry, Johnny D.
Handling: hand and hoist-line implements
Grapple
Fixed and moveable jaw
294106, 294110R, 294116, B66C 162
Patent
active
040970841
ABSTRACT:
A lifting grab is designed to enter restricted areas close to the circumferential diameter of a cylindrical object resting on its bottom such as a pipe or torpedo and to engage a position grasping the object on its circumferential outer surface below its horizontal diameter for lifting the object upwardly. The grab has pivoted hook and clamp members closely surrounding the outer circumference of the object about an arc greater than half the circumferential span, with the clamp member terminating in a lifting shackle. Provision is made for locking the clamp in grasping position and to lift the grab along its center of gravity in both opened mounting and closed grasp positions. The cylindrical object is grasped by pivoted swivel pad members mating with the cylindrical surface and mounted near the lower ends of the clamp and hook members.
REFERENCES:
patent: 2342506 (1944-02-01), Wrobbel
patent: 2613103 (1952-10-01), Bushnell
patent: 2655401 (1953-10-01), Kelso
patent: 3011821 (1961-12-01), Doty
patent: 3068036 (1962-12-01), Doty
patent: 3101968 (1963-08-01), Cianchette et al.
patent: 3165347 (1965-01-01), Keskitalo
patent: 3363929 (1968-01-01), Nelson
patent: 3479078 (1969-11-01), Doty
patent: 4026593 (1977-05-01), Brown et al.
Brown Laurence R.
Cherry Johnny D.
Russkraft, Inc.
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