Handling: hand and hoist-line implements – Grapple – Expanding
Patent
1993-06-30
1995-04-04
Huppert, Michael S.
Handling: hand and hoist-line implements
Grapple
Expanding
53475, 53532, 4147952, 901 39, B65G 5730
Patent
active
054030560
ABSTRACT:
A robotic hand on a robot is capable of picking-up several generally flattened articles in a stack form in a gentle non-damaging manner. The robotic hand has a manifold for directing controlled pressure air and a set of gripper finger assemblies extending therefrom. Each finger assembly has a rigid finger support member and an inflatable bladder extending along its length. The bladders are in communication with the chamber of the manifold and an external source of positive and negative pressure air. The robotic hand is capable of positioning itself over an article to be picked-up with the set of gripper finger assemblies encompassing the article. Pressurized air is directed through the manifold and into the bladders of the finger assemblies. The bladders expand sufficiently to grasp sides of the article. The robotic hand is moved to a position over another article wherein the bladders of the finger assemblies are deflated by drawing a vacuum through the manifold to cause the first article to drop onto the second article. Reinflating the bladders causes the gripper finger assemblies to grasp the two articles. The sequence of steps is repeated until a stack of a pre-determined number of articles is formed within the finger assemblies. The robotic hand deposits the stack into an open-top container to ultimately fill the container.
REFERENCES:
patent: 3347587 (1967-10-01), Frost
patent: 4071149 (1978-01-01), Deguchi
Huppert Michael S.
Krizek Janice L.
Planet Products Corporation
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