US PATENT SUBCLASS 277 / 469
.~.~.~ Bias limiting 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}
469.~.~.~ Bias limiting feature

DEFINITION

Classification: 277/469

Bias limiting feature:

(under subclass 467) Particular piston ring expander including means to restrict the extent of radial expansion.

SEE OR SEARCH THIS CLASS, SUBCLASS:

445+, for a piston ring or piston ring expander or seat therefor having a feature to limit rotation between any combination of piston ring, piston ring expander or seat, pluralities of the piston ring, or piston ring expander.

494+, for a piston ring having a gap and a separate bridging piece for the gap.

496+, for a single piece split piston ring having opposed asymmetrical mirrored ends.

498+, for a single piece split piston ring having other than opposed asymmetrical mirrored ends.