Denison Calzoni Radial Piston Motors
The outstanding performance of the motor is a result of an original and patented design. The principle is to transmit force to the driving shaft by means of a pressurized column of oil without any connecting rods, piostons, pads and pins. This oil column is contained by a telescopic cylinder with a mechanical connection at the lips at each end, which seal against the spherical surfaces of the cylinder-head and the spherical surface of the rotating shaft.
This produces a motor with extremely high values of mechanical and volumetric efficiency. The torque output is smooth even at very low speed under high pressure, and the motor offer high performance starting under load.