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Flexible arm, particularly a robot arm

  • US 4,393,728 A
  • Filed: 02/23/1982
  • Issued: 07/19/1983
  • Est. Priority Date: 03/16/1979
  • Status: Expired due to Fees
First Claim
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1. A flexible arm, particularly a robot arm, for supporting and/or manipulating tools or the like, wherein a number of elements are arranged in series for contacting each other and power-generating and power-transmitting actuating means are provided and arranged to operate the elements to move them with respect to each other comprising each said element has segments with convexly curved surfaces substantially oppositely disposed with respect to each other, the curved surfaces of each of said segments engaging the adjacent curved surfaces of the adjacent segments so that said elements have a rolling motion in relation to each other when actuated by said actuating means, the radius of curvature of said curved surfaces being relatively considerably larger than the height of said segments.

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