US PATENT SUBCLASS 277 / 419
.~.~.~.~.~ Interfitting or overlapping

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}
411  DF  .~.~ Gap or clearance {2}
412  DF  .~.~.~ Labyrinth {7}
418  DF  .~.~.~.~ Formed by plural grooves or projections on opposing surfaces {1}
419.~.~.~.~.~ Interfitting or overlapping {1}
420  DF  .~.~.~.~.~.~> And axially oriented

DEFINITION

Classification: 277/419

Interfitting or overlapping:

(under subclass 418) Plural grooves or projections wherein the groove or projection extend beyond the inner or outer periphery of the other oppositely facing projection or groove.