US PATENT SUBCLASS 415 / 173.1
.~ Between blade edge and static part

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

170.1  DF  BEARING, SEAL, OR LINER BETWEEN RUNNER PORTION AND STATIC PART {9}
173.1.~ Between blade edge and static part {4}
173.2  DF  .~.~> Selectively adjustable
173.3  DF  .~.~> Resilient, flexible, or resiliently biased
173.4  DF  .~.~> Erodable or permanently deformable
173.5  DF  .~.~> Labyrinth seal

DEFINITION

Classification: 415/173.1

Between blade edge and static part:

(under subclass 170.1) Device wherein the means is located between a peripheral part of a working member blade* on the runner* and the fixed element.

(1) Note. A device having a bearing, seal, or liner located between a blade supported ring or shroud and a fixed element is not included in this subclass.

SEE OR SEARCH THIS CLASS, SUBCLASS:

55.4, for a turbine regenerative pump* having a seal at an end of a regenerative passage which seal may oppose a blade edge of the runner.

173.6, for a device having a bearing, seal, or liner between a blade* tip ring or shroud and a fixed element.