.~> Extending along runner axis (i.e., axial flow) {3}
DEFINITION
Classification: 415/71
(under the class definition) Apparatus comprising (1) a
blade* coiling around a runner* or (2) a working fluid* conduit in the peripheral wall or interior of a runner*, coiling around or through the runner*, the blade* or conduit, while coiling, approaching or receding from the runner* axis or advancing axially of the runner*, and passing at least once completely around the runner*.
(1) Note. Under this definition the conduit must completely limit the peripheral extent of the working fluid*.
SEE OR SEARCH THIS CLASS, SUBCLASS:
6, for a device having a liquid conduit of spiral form and mounted in or on a runner* for sequential dipping into a fluid source, elevating the fluid to a higher level while retaining the fluid in the conduit and then discharging the fluid.
SEE OR SEARCH CLASS
198, Conveyors: Power-Driven, 657+, 724, 756+, and 778 for a spiral conveyor in a loose casing so that no pressure increase is attained in moving fluent material.
416, Fluid Reaction Surfaces (i.e., Impellers),
176+, for the subcombination of the spiral blade* on a rotating shaft* where no means are provided (e.g., flange) for retaining material on the blade*.
