US PATENT SUBCLASS 277 / 453
.~.~.~.~ More than one oblique wall


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}
449  DF  .~.~ Particular piston seat {6}
452  DF  .~.~.~ Oblique wall {1}
453.~.~.~.~ More than one oblique wall {1}
454  DF  .~.~.~.~.~> Having parallel walls


DEFINITION

Classification: 277/453

More than one oblique wall:

(under subclass 452) Oblique wall wherein the groove has tapered or inclined walls.