US PATENT SUBCLASS 280 / 439
.~.~.~.~.~ Resilient

Current as of: June, 1999
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280 /   HD   LAND VEHICLES

29  DF  WHEELED {21}
400  DF  .~ Articulated vehicle {30}
423.1  DF  .~.~ Semitrailer {7}
433  DF  .~.~.~ Fifth wheel only {2}
438.1  DF  .~.~.~.~ Movably mounted {2}
439.~.~.~.~.~ Resilient {2}
440  DF  .~.~.~.~.~.~> Rubber
441  DF  .~.~.~.~.~.~> Slidably mounted

DEFINITION

Classification: 280/439

(under subclass 438.1) Devices in which the movement of at least one of the fifth wheel or coupling members with respect to the vehicle on which it is mounted is resisted by resilient means which provides a restoring force tending to restore the member to a given position.

SEE OR SEARCH THIS CLASS, SUBCLASS:

483+, for resilient connections between articulated vehicles of other types.

SEE OR SEARCH CLASS

267, Spring Devices, for spring devices, per se.