Patent ID: 9528532
Filing Date: 2016-12-27
CPC Classification: B25J,F15B

Claim Text:
1. A movable joint in a robotics system, comprising; a first rigid structure, including a hollow tube, having a first opening at a first end of the hollow tube and having a second opening at a second end of the hollow tube; hydraulic fluid within the hollow tube; a moveable magnet within the hollow tube, the moveable magnet moving within hollow tube as a result of a plurality of magnetic fields within the hollow tube; a first piston on a first end of the moveable magnet; a second piston on a second end of the moveable magnet; a controller that controls a plurality of magnetic fields within the hollow tube, a second rigid structure connected to the first rigid structure at a pivot, an angle of the first rigid structure to the second rigid structure around the pivot being varied in response to the first piston pushing hydraulic fluid out of the first opening of the hollow tube.