US PATENT SUBCLASS 277 / 552
.~.~.~ Having pressure relief or venting 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}
500  DF  .~ Circumferential contact seal for other than piston {13}
549  DF  .~.~ Peripheral radially sealing flexible projection (e.g., lip seal, etc.) {12}
552.~.~.~ Having pressure relief or venting feature

DEFINITION

Classification: 277/552

Having pressure relief or venting feature:

(under subclass 549) Peripheral radially sealing flexible projection including means for releasing or relieving fluid pressure at the joint or juncture.

(1) Note. For this subclass a valve for a passageway must claim or disclose a venting function.

SEE OR SEARCH THIS CLASS, SUBCLASS:

928, for a seal having a pressure relief or venting feature for other than a dynamic circumferential contact seal for other than a piston having a peripheral radially sealing flexible projection including a pressure relief or venting means.

SEE OR SEARCH CLASS

384, Bearings, for more than nominal bearing structure or

detail (e.g., liner, bearing race, cage, etc.) combined with a specific seal,

479, for a radial antifriction bearing where the seal establishes a pressure or pressure responsive means loads the seal.