Patent numberĀ FR2910833-A1/WO2008080917-A1 is of interest to us. It is another hand oriented Cable Suspended Interface. The user would hold onto a joystick like device and be able to control an object in 3d space. It seems like this report spent more time focusing on the dynamics and increase visibility than on the design of the spool. Unfortunately, this patent is in french, however it provided a gateway to other patents on this topic.
