US PATENT SUBCLASS 277 / 412
.~.~.~ Labyrinth

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.~.~.~ Labyrinth {7}
413  DF  .~.~.~.~> Having adjustable member
414  DF  .~.~.~.~> Formed by cellular pockets (e.g., honeycomb, etc.)
415  DF  .~.~.~.~> Having wear resistant, abradable, or ablative member
416  DF  .~.~.~.~> Segmented
417  DF  .~.~.~.~> Formed by multiple washers
418  DF  .~.~.~.~> Formed by plural grooves or projections on opposing surfaces {1}
421  DF  .~.~.~.~> Having installation, removal, assembly, disassembly, or repair feature

DEFINITION

Classification: 277/412

Labyrinth:

(under subclass 411) Gap or clearance wherein the gap or clearance seal has more than one throttling zone.

SEE OR SEARCH THIS CLASS, SUBCLASS:

355, for a dynamic, brush seal that may declare or reveal a labyrinthlike structure.

SEE OR SEARCH CLASS

384, Bearings, for more than nominal bearing structure or detail (e.g., liner, bearing race, cage, etc.) combined with a specific seal,

144, for a plain, radial bearing or subclass 480 for a radial, antifriction bearing where the seal is a labyrinth seal.