US PATENT SUBCLASS 277 / 424
.~.~.~ Rib or groove on radial extending surface

Current as of: June, 1999
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277 /   HD   SEAL FOR A JOINT OR JUNCTURE

345  DF  SEAL BETWEEN RELATIVELY MOVABLE PARTS (I.E., DYNAMIC SEAL) {10}
409  DF  .~ Close proximity seal (e.g., contactless, fluent, etc.) {4}
423  DF  .~.~ Impeller (e.g., slinger, etc.) {5}
424.~.~.~ Rib or groove on radial extending surface

DEFINITION

Classification: 277/424

Rib or groove on radial extending surface:

(under subclass 423) Impeller seal wherein the impeller has an axially facing radial surface having a projection or indentation on the surface to act upon the sealed or sealing fluid.