US PATENT SUBCLASS 280 / 430
.~.~.~.~.~ Longitudinally movable trailer coupling

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}
427  DF  .~.~.~ Interrelated operation of coupling, landing gear, and brake {3}
429  DF  .~.~.~.~ Landing gear actuated by coupling action {1}
430.~.~.~.~.~ Longitudinally movable trailer coupling

DEFINITION

Classification: 280/430

(under subclass 429) Devices in which the trailer coupling member, i.e., the member which cooperates with a complementary member on the tractor to establish draft connection between the vehicles, is mounted to move rectilinearly along the central axis of the trailer during coupling action and such movement results in actuation of the landing gear.