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Robot Hand With Shape Memory Musculature

IP.com Disclosure Number: IPCOM000064242D
Original Publication Date: 1985-Jun-01
Included in the Prior Art Database: 2005-Feb-18

Publishing Venue

IBM

Related People

Authors:
Chaudhuri, P Fredericksen, DH [+details]

Abstract

Shape memory musculature, made up of opposed bundles of strands of nickel-titanium alloy exhibiting the characteristic of shape memory and provided with bundle cooling and selective strand heating, provides controlled precise and delicate motion in a robot hand. Nickel-titanium alloy possesses a property known as the "shape-memory" effect. If it is annealed in a certain shape (at a temperature TM particular to the alloy) and after cooling is deformed to a different shape, subsequent reheating to the critical temperature causes it to resume the original shape. Shape memory may be exploited so as to simulate the action of a muscle. In a muscle system, different nerves bring control currents to selected muscle fibers, which contract when impulsed.