US PATENT SUBCLASS 277 / 550
.~.~.~ Made of metal or is a scraper

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}
550.~.~.~ Made of metal or is a scraper

DEFINITION

Classification: 277/550

Made of metal or is a scraper:

(under subclass 549) Peripheral radially sealing flexible projection wherein the flexible projection is metal or, dislodges or removes unwanted foreign material by direct relatively movable contact against one of the parts.

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,

137, for a plain radial bearing where the seal has means to remove excess lubricant from the shaft and return it to a lubricant reservoir or for removing material from the shaft about to enter the bearing from the outside.