US PATENT SUBCLASS 277 / 482
.~.~.~ Circumferentially spaced separately seated radially acting bias feature

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}
434  DF  .~ Piston ring or piston ring expander or seat therefor {15}
467  DF  .~.~ Particular piston ring expander {12}
482.~.~.~ Circumferentially spaced separately seated radially acting bias feature {1}
483  DF  .~.~.~.~> Disposed in socket or about pin

DEFINITION

Classification: 277/482

Circumferentially spaced separately seated radially acting bias feature:

(under subclass 467) Particular piston ring expander wherein the piston ring expander has peripherally spread apart, individually positioned, resilient members acting in a direction perpendicular to the piston's axis of reciprocation.