Patent ID: 8186245

Claim:
A mechanical device for transmitting a torque so as to generate a multi-degree-of-freedom rotation, comprising: an immovable frame fastening the device and including: a first hole; and a first sleeve disposed in the first hole, and having a first transmission element; a first shaft, disposed inside the first hole and the first sleeve, and having a second hole; a second shaft disposed in the second hole, perpendicular to the first shaft, and including: a second sleeve including: a second transmission element having a first and a second ends, and meshing with the first transmission element at the first end of the second transmission element, for driving the second sleeve in accordance with a rotation of the first shaft; and a first spur gear, disposed at the second end of the second transmission element; a third shaft having a first and a second ends, wherein a second spur gear is disposed at the first end of the third shaft; a first connecting element connecting the second and the third shafts, and letting the first and the second spur gears mesh together; and a second connecting element connecting the second and the third shafts.