Gripper assembly

Details Gripper assembly Gripper assembly

1987-01-09

1987-12-22

Cherry, Johnny D.

Handling: hand and hoist-line implements

Grapple

Inflatable

269 22, B66C 146

Patent

active

047142898

ABSTRACT:
A gripper assembly whose gripping member is a thin (0.050" to 0.060") pliable elastometer, typically of a Pelethane compound having high coefficient of friction with respect to the surface to be gripped. The assembly includes a hollow retainer formed of abutting retainer sections. Internally the sections form a circularly cylindrical surface. The gripping member is circularly cylindrical and is mounted on the retainer so that it extends over the internal cylindrical surface. The ends of the gripping member have rings which are sealed pressure-tight in slots in the end surfaces of the retainer. Within the gripping member there is a cage formed of rods joined by rings for centering an object to be gripped by windows and defined between the rods and rings of the cage. The retainer has a port through which a fluid (air) under pressure is injected. The retainer has a slot connected to the port so that the fluid is distributed over the region between the gripping member and the internal surface of the retainer causing the gripping member to exert pressure on the object to be gripped.

REFERENCES:
patent: 2778865 (1957-01-01), Kongsgaarden
patent: 2929653 (1960-03-01), Hund et al.
patent: 3542354 (1970-11-01), Fitzpatrick

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