Rotor and gear assembly for rotary mechanisms

Claim 1

A rotor and gear assembly for rotary mechanisms comprising: a. a rotor having opposite end faces, contiguous peripheral walls and a hub portion formed in a recess in each of the end faces; b. said hub portion, said peripheral walls and end faces being interconnected by circumferentially spaced ribs; c. each of said ribs being joined to the end faces, hub portion, and peripheral walls and having an inner distal edge portion inclined to extend from said end faces inwardly in a direction toward the hub portion of the rotor; d. a ring gear having an internal toothed portion and a plurality of circumferentially spaced elongated boss portions projecting axially from the plane of the toothed portion; e. each of which has an inner surface extending substantially parallel to the gear axis and a chamfered outer surface extending inwardly toward the gear axis; f. said ring gear being disposed to abut said hub portion adjacent said inner surfaces of said boss portions and with the chamfered outer surfaces of said boss portions closely spaced from the distal inclined edge portions of the circumferentially spaced ribs of thE rotor; and g. fastening means including an elongated, relatively flexible body portion for each of said boss portions; h. a bore in said hub portion for each boss portion coaxially aligned with the associated boss portion and of a dimension to receive the body portion of the fastening means therethrough in spaced relation to the walls of the bore to permit flexure of the body portion; i. each of said fastening means extending, from the hub portion surface opposite from the ring gear, through the hub portion to a connection at the end of the body portion to said boss portion of the gear whereby said fastening means and said associated boss portion coact to flexibly secure said gear against radial movement due to cyclically varying loads and circumferential distortion from thermally induced stresses.