Block lift

Details Block lift Block lift

1996-01-18

1998-01-06

Kramer, Dean

Handling: hand and hoist-line implements

Grapple

Expanding

294 62, B66C 154

Patent

active

057046751

ABSTRACT:
The invention is a device for attaching a lifting cable or the like to a concrete block or other heavy object. The invention has a pair of pivoting cam members mounted to frame. The frame and cam members are dimensioned so that they can be fit within a space within the block when the device is in a relaxed condition. A linkage, which is connected to the lifting cable, drives the cam members outwardly against the walls of the space when the lifting cable is put in tension. This wedges the device in the space. The greater the tension in the lifting cable, the greater the wedging force.

REFERENCES:
patent: 2507675 (1950-05-01), Morris
patent: 2558114 (1951-06-01), Williams et al.
patent: 2823948 (1958-02-01), Horton
patent: 3519304 (1970-07-01), Shores
patent: 5490702 (1996-02-01), Fleming

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