US PATENT SUBCLASS 280 / 479.3
.~.~.~.~ Extensible swingable tow bar with coacting guide for centering

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

29  DF  WHEELED {21}
400  DF  .~ Articulated vehicle {30}
477  DF  .~.~ Connection facilitating {1}
478.1  DF  .~.~.~ Draft element bodily shiftable {3}
479.3.~.~.~.~ Extensible swingable tow bar with coacting guide for centering

DEFINITION

Classification: 280/479.3

Extensible swingable tow bar with coacting guide for centering:

(under subclass 478.1) Vehicles where either the tow bar or trailer tongue is extensible out if its guide to facilitate coupling with another vehicle after which, during its retraction, wedges, cams or other surfaces react against a guide to center the bar in its normal position.

SEE OR SEARCH THIS CLASS, SUBCLASS:

477, for a mere ramp or wedge on one vehicle which guides a nonextensible tow bar on another vehicle upon relative movement of the two vehicles.