The design of the passive arm module – and why it now works as expected

Robo-Mate's passive arm module does not need any power supply, is lightweight and provides a constant supporting force that can be easily varied. In a recently published paper, Ruprecht Altenburger, Daniel Scherly and Konrad Stadler (all from ZHAW) describe the requirements, design and geometry of the module, including a tiny little detail that makes a big difference.

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