(under subclass 182.1) Device wherein the means comprises a casing* and wherein the working fluid* flows to, through, and from the runner* along a path extending along the runner's axis of rotation. The working fluid path has a ring like or annular cross section taken perpendicular to the axis of rotation, which cross section is centered about and which cross section decreases or increases in diameter along the axis of rotation.
(1) Note. Working fluid flow to, through, and from a runner which flow is radial only to an extent necessary for the expansion or compression of working fluid passing axially through the runner is not considered to be axial, conical flow.
SEE OR SEARCH THIS CLASS, SUBCLASS:
218.1, for a casing with a runner including a working fluid directing conical hub having its small diameter facing upstream.
