US PATENT SUBCLASS 280 / 438.1
.~.~.~.~ Movably mounted

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.~.~.~.~ Movably mounted {2}
439  DF  .~.~.~.~.~> Resilient {2}
441.1  DF  .~.~.~.~.~> Turntable-type fifth wheel coupling

DEFINITION

Classification: 280/438.1

Movably mounted:

(under subclass 433) Vehicles in which at least one of the fifth wheel or coupling members is mounted on its vehicle in such manner as to allow articulative movement between the vehicles when in coupled or connected relationship in addition to the articulative movement permitted by the detachable connection between the vehicles.

(1) Note. One example of such an additional articulation axis is the transverse pivot axis for a fifth wheel plate.

SEE OR SEARCH THIS CLASS, SUBCLASS:

407.1+, for adjustment of the coupling to distribute the load between leading and trailing vehicles.

446.1+, where the position of a connection is automatically changed in response to load or draft connections.

492+, for other connections having plural articulation axes.