US PATENT SUBCLASS 277 / 493
.~.~ Segmented piston 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}
434  DF  .~ Piston ring or piston ring expander or seat therefor {15}
493.~.~ Segmented piston ring

DEFINITION

Classification: 277/493

Segmented piston ring:

(under subclass 434) Piston ring wherein the piston ring's perimeter is divided into portions.

SEE OR SEARCH THIS CLASS, SUBCLASS:

486, for a piston ring expander adjoining opposed ends of a split or segmented piston ring.

487, for a segmented, piston ring expander.

543+, for a dynamic, segmented ring circumferentially contacting seal for other than a piston.