US PATENT SUBCLASS 277 / 545
.~.~.~ Radial biasing spring element other than nominal garter spring

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}
543  DF  .~.~ Segmented ring {4}
545.~.~.~ Radial biasing spring element other than nominal garter spring

DEFINITION

Classification: 277/545

Radial biasing spring element other than nominal garter spring:

(under subclass 543) Segmented ring including means other than a nominally set forth coiled wire spring that encircles the seal around its circumference to provide a radial bias for the segmented ring.

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.

533, for a dynamic, segmented, circumferential contact seal for other than a piston intended to be contained or compressed by a gland member in a packing box having a particular cross-sectional shape to provide a wedging surface.

553+, for a dynamic, circumferential, contacting peripheral, radially sealing, flexible projection (e.g., a lip seal, etc.) including a bias means other than a nominal garter spring for other than a piston.

589, for a dynamic, circumferential contact seal for other than a piston radially backed by resilient or elastomeric member.

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,

150, for a plain radial bearing where mechanical means (e.g., nut, separate resilient elements, etc.) moves the seal.