US PATENT SUBCLASS 277 / 509
.~.~.~.~ Coaxial 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}
503  DF  .~.~ Accommodates gyratory or oscillatory motion {4}
508  DF  .~.~.~ Axially spring biased {1}
509.~.~.~.~ Coaxial spring

DEFINITION

Classification: 277/509

Coaxial spring:

(under subclass 508) Axial spring bias wherein the spring has a symmetrical axis substantially common to the axis of motion formed by the relatively movable parts.