US PATENT SUBCLASS 277 / 447
.~.~ Floating 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}
447.~.~ Floating piston ring {1}
448  DF  .~.~.~> Material other than metal

DEFINITION

Classification: 277/447

Floating piston ring:

(under subclass 434) Piston ring including relative movement to the seat.

SEE OR SEARCH THIS CLASS, SUBCLASS:

305, for a process of using a dynamic close proximity floating ring or bushing (i.e., contactless).

422, for a dynamic, close proximity floating ring or bushing (i.e., contactless).

579+, for a dynamic, circumferential, contact floating ring or bushing seal for other than a piston.