Abstract: The present invention relates to a link assembly for a robot arm which comprises first and second link members each adapted for limited movement one with respect to the other and resilient elastomer means disposed between said first and second members and bonded or keyed thereto whereby movement between the first and second member results in shear movement within the elastomer means disposed there between.

Abstract: This invention relates to redundant robotic apparatus and methods of deploying them. The specification teaches the methodology and construction of a robotic arm device capable of accessing machinery and equipment, which is otherwise difficult access for maintenance and repair, and is particularly useful in the aeronautical, turbine and nuclear industries. In particular the invention includes apparatus which comprises a support arm comprising a plurality of longitudinal segments each capable of movement one with respect to the other to define a serpentine path or shape, work head carrying means at or towards the distal end of said arm and adapted to carry a work and or examination tool and control means for at least some of said segments to permit control of the shape of the associated segment so that different segments constituting the arm may assume different shapes whereby the arm may advance longitudinally along a predetermined access path to present said tool at said site.