US PATENT SUBCLASS 280 / 492
.~.~ Plural articulation axes

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

29  DF  WHEELED {21}
400  DF  .~ Articulated vehicle {30}
492.~.~ Plural articulation axes {1}
493  DF  .~.~.~> Tow bar {1}

DEFINITION

Classification: 280/492

(under subclass 400) Devices in which the connection between the vehicles includes at least two pivots, the axes of which are spaced apart in the direction of draft, or includes at least two pivots the axes of which intersect, provided the axis of one of the pivots is in or parallel to the line of draft.

SEE OR SEARCH THIS CLASS, SUBCLASS:

504+, for couplings having universal movement, especially

subclasses 511+ for ball and socket couplings.