US PATENT SUBCLASS 280 / 483
.~.~ Resilient

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

29  DF  WHEELED {21}
400  DF  .~ Articulated vehicle {30}
483.~.~ Resilient {4}
484  DF  .~.~.~> Plural biased movements {1}
486  DF  .~.~.~> In line of draft {1}
488  DF  .~.~.~> About vertical pivot
489  DF  .~.~.~> About horizontal transverse pivot

DEFINITION

Classification: 280/483

(under subclass 400) Devices in which the articulated connection between the vehicles or between the draft means and at least one of the vehicles is resiliently biased by spring means or the equivalent against movement in at least one direction from a given position.

SEE OR SEARCH THIS CLASS, SUBCLASS:

439+, for resilient connections between articulated vehicles of the semitrailer type.

449+, for overload release couplings.

SEE OR SEARCH CLASS

172, Earth Working,

678, for an earth working implement with a spring biased hitch. 267, Spring Devices, for spring devices, per se.