Maneuvering device for heavy flat plates

Details Maneuvering device for heavy flat plates Maneuvering device for heavy flat plates

1989-04-04

1990-12-18

Hartman, J. J.

Implements or apparatus for applying pushing or pulling force

Single throw lever

Special engaging feature

B66F 1100

Patent

active

049781030

ABSTRACT:
Large, flat objects such as manhole covers, and storm drain grates, are lifted and maneuvered. A tool includes a gripper assembly which receives the object at or near an edge and establishes control by an arrangement of at least one concentrated contact area or pressure point on one surface of the object and a pair of such concentrated contact areas or pressure points on the other surface. A long lever handle allows pivoting to raise the object; rollers on the tool accommodate maneuvering afterwards. Avoidance of runaway rolling and maintenance of positive movement control is possible by a stub or pin which is attachable if desired to engage the ground, street or the like, after the object is lifted.

REFERENCES:
patent: 3275299 (1966-09-01), Meshew
patent: 4482182 (1984-11-01), Mortensen

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