Handling: hand and hoist-line implements – Spacing hoist bar or frame – Adjustable to accommodate different size loads
Patent
1986-12-18
1987-08-11
Cherry, Johnny D.
Handling: hand and hoist-line implements
Spacing hoist bar or frame
Adjustable to accommodate different size loads
294 65, B66C 102
Patent
active
046857141
ABSTRACT:
A lifting assembly for use with vacuum pads or the like includes a hollow load beam having a longitudinal slot in its bottom wall, a cross arm, and means suspending the cross arm below the load beam. The suspending means include a traversing member positioned within the load beam and above the longitudinal slot; roller means attached to the traversing member and in rolling contact with the internal surface of the load beam on either side of the slot; a non-rotatable traverse plate exterior to the load beam and below the traversing member; a rotation plate below and in rotationally sliding contact with the traverse plate, the top surface of the cross arm being attached to the bottom surface of the rotation plate; support means, preferably a vertical bolt, supporting the cross arm, rotation plate, and traverse plate below the traversing member and defining a vertical axis of rotation; and releasable means for locking the cross arm in any desired position along the load beam. In a preferred embodiment, releasable means are also provided for quickly and easily fixing the cross arm in any of several preselected angular positions with respect to the load beam.
REFERENCES:
patent: 2941675 (1960-06-01), Noble et al.
patent: 3033382 (1962-05-01), Noble et al.
patent: 3102751 (1963-09-01), Noble et al.
patent: 4129328 (1978-12-01), Littell
patent: 4228993 (1980-10-01), Cathers
Cherry Johnny D.
Long Charles J.
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