US PATENT SUBCLASS 277 / 347
.~.~ Close proximity seal (e.g., contactless, fluent, 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.~.~ Close proximity seal (e.g., contactless, fluent, etc.) {2}
348  DF  .~.~.~> And relatively rotatable radially extending contacting sealing members (e.g., face, mechanical, etc.) {1}
350  DF  .~.~.~> And circumferential contact seal {1}

DEFINITION

Classification: 277/347

Close proximity seal (e.g., contactless, fluent, etc.):

(under subclass 346) Diverse and distinct dynamic seals wherein the sealing means is free of relatively movable sealing contact relating to the relatively movable parts and capable of acting upon or causing a sealed or sealing fluid to oppose the flow of fluid at the joint or juncture.

SEE OR SEARCH THIS CLASS, SUBCLASS:

301+, for a process of dynamic close proximity sealing (e.g., contactless, fluent, etc.).

409+, for a dynamic close proximity seal (e.g., contactless, fluent, etc.).

904, for a seal formed by a viscous fluid usually contained by one or more physical contacting type seals.