US PATENT SUBCLASS 277 / 348
.~.~.~ And relatively rotatable radially extending contacting sealing members (e.g., face, mechanical, etc.)

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}
346  DF  .~ Diverse and distinct dynamic seals {3}
347  DF  .~.~ Close proximity seal (e.g., contactless, fluent, etc.) {2}
348.~.~.~ And relatively rotatable radially extending contacting sealing members (e.g., face, mechanical, etc.) {1}
349  DF  .~.~.~.~> And circumferential peripheral radially sealing flexible projection (e.g., lip seal, etc.)

DEFINITION

Classification: 277/348

And relatively rotatable radially extending contacting sealing members (e.g., face, mechanical, etc.):

(under subclass 347) Close proximity seal and at least one of a pair of opposing surface members relatively rotating at the joint or juncture that defines a sealing face and wherein the joint or juncture is at an angle to a rotational axis formed between the relatively movable parts.

(1) Note. A hydrodynamic, relatively rotatable, radially extending, sealing face member (e.g., face, mechanical, etc.) will only have a gap during normal rotational operation and will close its gap under slower or nonrotational speeds whereas a close proximity seal (e.g., contactless, etc.) of the impeller type always has a gap between a fluent impeller and a part or another sealing member.

SEE OR SEARCH THIS CLASS, SUBCLASS:

306+, for a process of using a relatively rotatable, radially extending, sealing face member (e.g., face, mechanical, etc.).

352+, for diverse and distinct dynamic seals having a relatively rotatable, radially extending, sealing face member (e.g., face, mechanical, etc.) and other than a close proximity seal (e.g., contactless, fluent, etc.).

358+, for a relatively rotatable, radially extending, sealing face member (e.g., face, mechanical, etc.).