US PATENT SUBCLASS 280 / 504
.~.~ Coupling

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

29  DF  WHEELED {21}
400  DF  .~ Articulated vehicle {30}
504.~.~ Coupling {7}
505  DF  .~.~.~> Bumper forms coupling element
506  DF  .~.~.~> Rattle preventing
507  DF  .~.~.~> Protector or lock
508  DF  .~.~.~> Self-coupling {2}
511  DF  .~.~.~> Ball and socket {2}
514  DF  .~.~.~> Interlocked
515  DF  .~.~.~> Draft pin

DEFINITION

Classification: 280/504

(under subclass 400) Devices in which the articulated vehicles are provided with complementary parts which are releasably connected together to form the draft connection between the vehicles.

(1) Note. This and indented subclasses include subcombinations of couplings or coupling elements which are disclosed for use in connecting articulated vehicles.

SEE OR SEARCH THIS CLASS, SUBCLASS:

433+, for couplings or fifth wheels for releasably connecting a tractor and semitrailer.

495+, for detachable connections, including clamps, between a coupling element and its associated vehicle.