PROBLEM TO BE SOLVED: To provide an actuator necessary for driving an earthworm type robot and a mechanism for lifting an anti-slipping member (an elastic member, such as rubber).;SOLUTION: The longitudinal deformation of a bag has been utilized for the actuator to lengthen and shorten a body. Further, bags made of synthetic resin materials have been attached around the anti-slipping members.;COPYRIGHT: (C)2006,JPO&NCIPI
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