Pneumatic, tactile gripper generating a gripping force controlle

Details Pneumatic, tactile gripper generating a gripping force controlle Pneumatic, tactile gripper generating a gripping force controlle

1987-01-20

1988-03-15

Marbert, James B.

Handling: hand and hoist-line implements

Hook, hoistline, or grab type

Locking device

414730, B66C 316, B25J 1500

Patent

active

047308621

ABSTRACT:
The invention relates to a pneumatic gripper comprising at least one movable finger of which the clamping force is controlled by the weight of the object handled. Each movable finger includes a pneumatic actuator (1) of which the movable member (2) is solidly joined to a flexible blade (4). A stop member (4) is fastened to the free portion of this blade (4) and will touch the object to be seized. Two potentiometers (9, 11) are located on the sides of this blade (4) and their respective outlets (9b, 11b) are connected to an actuation chamber of the actuator so as to achieve a pressure difference between these chambers (1a, 1b) and hence a clamping force directly related to the blade bending. Each finger furthermore includes proximity sensors (7) for the object to be seized, whereby this object can be approached rapidly without danger of tipping it over when making contact with it.

REFERENCES:
patent: 4350381 (1982-09-01), Hellman
patent: 4397495 (1983-08-01), Lewis
patent: 4479673 (1984-10-01), Inaba et al.

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