Exercising device comprising a moving unit (1-6'), a motion-transferring mechanism (7, 10-11') connected to the moving unit, and a hydraulic system (8-9, 12-17) connected to said motion transferring mechanism for controlling the motions of the moving unit. The invention is characterized in that the moving...http://www.google.co.uk/patents/US5397287?utm_source=gb-gplus-sharePatent US5397287 - Muscle exercising device
