US PATENT SUBCLASS 277 / 558
.~.~.~.~ Particular fluid pressure responsive bias

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}
500  DF  .~ Circumferential contact seal for other than piston {13}
549  DF  .~.~ Peripheral radially sealing flexible projection (e.g., lip seal, etc.) {12}
553  DF  .~.~.~ Bias feature other than nominal garter spring {5}
558.~.~.~.~ Particular fluid pressure responsive bias

DEFINITION

Classification: 277/558

Particular fluid pressure responsive bias:

(under subclass 553) Bias for the flexible projection wherein the radial bias includes specific means to react to a change in fluid pressure to vary the radial bias.

SEE OR SEARCH THIS CLASS, SUBCLASS:

929, for a seal for other than a dynamic circumferential contact seal for other than a piston having a fluid pressure responsive radially biasing means where a change in operation

or condition induces additional leakage control.