US PATENT SUBCLASS 415 / 220
.~ Casing with axial flow runner

Current as of: June, 1999
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415 /   HD   ROTARY KINETIC FLUID MOTORS OR PUMPS

182.1  DF  WORKING FLUID PASSAGE OR DISTRIBUTING MEANS ASSOCIATED WITH RUNNER (E.G., CASING, ETC.) {24}
220.~ Casing with axial flow runner {3}
221  DF  .~.~> Having specific features for liquid flow
222  DF  .~.~> Pump with casing narrowing to runner
223  DF  .~.~> Having runner in orifice of radially extending partition or casing element

DEFINITION

Classification: 415/220

Casing with axial flow runner:

(under subclass 182.1) Device wherein the means comprises a casing* and wherein the working fluid* path to, through, and from the runner* is predominantly parallel to the runner's axis of rotation.

(1) Note. In axial flow devices, a "casing" positioned about the periphery of a runner blade* row is generally

distinguished from a vane* or deflector in that a casing (a) encloses the periphery of the blade row over more than half of the axial extent of the blade row or (b) includes means to support the runner.

SEE OR SEARCH THIS CLASS, SUBCLASS:

4.3, for a device comprising an axial flow runner with means for controlling a casing or flow guiding means in response to natural fluid current force.

4.5, for a device comprising an axial flow runner with means for controlling a casing or flow guiding means in response to natural fluid current direction.

72+, for a device comprising a casing with a runner having a spirally arranged blade or fluid passage which extends along the runner axis and may direct the fluid along an axial flow path.

77+, for a device comprising a casing with an axial flow runner having blades extending radially inward and outward from a common annulus. 91, for a device comprising a casing with an annular runner having an inwardly projecting blade which may direct the fluid along an axial flow path.

170.1+, for a device comprising a bearing, seal or liner between an axial flow runner or runner blade and a static part.

199.4+, for a device comprising a casing with a runner having plural rigidly related blade sets at least one set of which directs the fluid along an axial flow path.

208.1+, for a device having a vane* or deflector for a runner which may include an axial flow blade set, particularly subclass 211.1 in which the vane or deflector is in the same radial plane as the blade set.

908, for a natural fluid current motor* having an axial flow runner.

SEE OR SEARCH CLASS

416, Fluid Reaction Surfaces (i.e., Impellers), appropriate subclasses, for impeller structure, per se.