FLUID PUMP, FLUID MOTOR, FLUID TRANSMISSION, AIR COMPRESSOR AND STEAM ENGINE

摘要

A fluid drive or pump apparatus includes a housing defining a substantially circular rotor chamber therein, a drive shaft extending through this chamber, and a circular rotor located in the chamber and mounted on the drive shaft to rotate therewith. The rotor has a diameter less than the diameter of the chamber. The rotor and drive shaft are offset from the centre axis of the chamber. One or more pairs of vanes are mounted in the rotor and are slidable radially therein. The members of each pair are located diametrically opposite each other and are rigidly connected to one another by connecting rods. The members of each pair have a combined connected length substantially equal to the distance between a specific point on the circumferential wall of the chamber which is closest to the circumference of the rotor and a second point diametrically opposite thereto. A portion of each of the two circumferential wall sections between these two points is slightly removed to permit full rotation of the vanes in the chamber.