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A compressor rotor assembly including an impeller including an impeller stem, the stem including a first coupling end having a first face and at least one arcuate coupling tab along the first face; the impeller stem further comprising a bore that extends inwardly from the first face, the bore having

A compressor rotor assembly including an impeller including an impeller stem, the stem including a first coupling end having a first face and at least one arcuate coupling tab along the first face; the impeller stem further comprising a bore that extends inwardly from the first face, the bore having an interior wall that is tapered. The rotor assembly further comprising a pinion shaft having a second coupling end with a second face and at least one arcuate coupling slot along the second face; and a hub extending outwardly from the second face, the hub including a tapered outer wall; the first and second coupling means and the hub and bore are adapted to be mated when the impeller and pinion shaft are assembled to prevent relative displacement of the stem and shaft.

대표청구항 ▼

1. A compressor rotor assembly comprising:an impeller having an impeller stem, the stem including an outer stem surface, and a first coupling end having a first coupling face; a pinion shaft including an outer shaft surface, and a second coupling end having a second coupling face; a hub extending ou

1. A compressor rotor assembly comprising:an impeller having an impeller stem, the stem including an outer stem surface, and a first coupling end having a first coupling face; a pinion shaft including an outer shaft surface, and a second coupling end having a second coupling face; a hub extending outwardly from one of the first coupling face and the second coupling face, the hub including a tapered outer wall, and a bore extending inwardly from the other of the first coupling face and the second coupling face, the bore having a tapered inner wall, wherein the hub and bore are adapted to be mated when the impeller and pinion shaft are assembled; and a slot formed in one of the first coupling face and the second coupling face, and a tab projecting outwardly from the other of the first coupling face and the second coupling face, wherein the slot and tab mate when the impeller and pinion shaft are assembled to transmit torque between the impeller and pinion shaft.