US PATENT SUBCLASS 280 / 510
.~.~.~.~ Opened by opposite coupling part

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

29  DF  WHEELED {21}
400  DF  .~ Articulated vehicle {30}
504  DF  .~.~ Coupling {7}
508  DF  .~.~.~ Self-coupling {2}
510.~.~.~.~ Opened by opposite coupling part

DEFINITION

Classification: 280/510

(under subclass 508) Devices in which one of the coupling members has a movable element which normally occupies a closed position to retain the complementary coupling member and is moved by movement of the complementary member during coupling operation to pass the member after which it returns to the closed position.