US PATENT SUBCLASS 277 / 498
.~.~ Split single piece piston ring having other than opposed asymmetrical mirrored ends

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}
498.~.~ Split single piece piston ring having other than opposed asymmetrical mirrored ends {1}
499  DF  .~.~.~> Arcuate or beveled mating surfaces

DEFINITION

Classification: 277/498

Split single piece piston ring having other than opposed asymmetrical mirrored ends:

(under subclass 434) Piston ring wherein the piston ring is an annulus including only a gap providing opposed ends that are of substantially dissimilar shape even when considering opposite orientation.

SEE OR SEARCH THIS CLASS, SUBCLASS:

546+, for a dynamic, segmented ring circumferentially contacting seal for other than a piston having a particular end structure.

631, for a static contact seal for other than an internal combustion engine, or a pipe, conduit, or cable having a split including end joining structure.