US PATENT SUBCLASS 277 / 543
.~.~ Segmented ring

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}
500  DF  .~ Circumferential contact seal for other than piston {13}
543.~.~ Segmented ring {4}
544  DF  .~.~.~> Having pressure balancing or radial bias reduction feature
545  DF  .~.~.~> Radial biasing spring element other than nominal garter spring
546  DF  .~.~.~> Particular segment end structure {1}
548  DF  .~.~.~> Plural complementary interfitting rings

DEFINITION

Classification: 277/543

Segmented ring:

(under subclass 500) Dynamic, circumferential contact seal wherein the seal is an annulus divided across its perimeter into portions.

SEE OR SEARCH THIS CLASS, SUBCLASS:

325, for a segmented and radially actuated (e.g., ram-type, etc.) seal for a well apparatus overpressure control device (e.g., seal for a blowout preventer, etc.).

344, for a segmented and radially actuated seal (e.g., oil saver, gas saver, etc.) for well apparatus.

356, for a dynamic seal for use in a journal box that may include a segmented seal.

493, for a segmented piston ring.