Fifth wheel construction

Claim 1

A FIFTH WHEEL ASSEMBLY COMPRISING A FIFTH WHEEL CONNECTOR PLATE, SAID CONNECTOR PLATE HAVING A BUTTON HOOK SLOT FORMED THEREIN INCLUDING A LONG LEG PORTION TERMINATING AT ONE END IN A BACK TURNED HOOK PORTION, THE END OF SAID LONG LEG PORTION OPENING REARWARDLY THROUGH SAID PLATE DEFINING A PAIR OF ARMS ON EITHER SIDE THEREOF, THE END OF SAID HOOK PORTION REMOTE FROM SAID LONG LEG PORTION TERMINATING IN A FORWARDLY FACING SEAT ADAPTED TO HAVE A FIFTH WHEEL PIN SEATED THEREIN, AND CAM MEANS MOVABLY MOUNTED ON SAID CONNECTOR PLATE INCLUDING A PORTION ADAPTED TO CAM A FIFTH WHEEL PIN DISPOSED IN SAID BACK TURNED HOOK PORTION ADJACENT SAID SEAT INTO SEATED ENGAGEMENT WITH SAID SEAT, SAID CAM MEANS ALSO INCLUDING A PORTION ADAPTED TO ENGAGE A FIFTH WHEEL PIN SEATED IN SAID SEAT AND TO MOVE SAID FIFTH WHEEL PIN FROM ENGAGEMENT WITH SAID SEAT AND THROUGH SAID BACK TURNED PORTION INTO A POSITION IN THE END OF SAID BACK TURNED PORTION IMMEDIATELY ADJACENT AND IN ALIGNMENT WITH THE INNER FORWARD END OF SAID LONG LEG PORTION, SAID CAM MEANS ALSO INCLUDING A PORTION ADAPTED TO ENGAGE A FIFTH WHEEL PIN DISPOSED IN THE END PORTION OF SAID BACK TURNED HOOK PORTION ADJACENT SAID LONG LEG PORTION AND TO MOVE SAID FIFTH WHEEL PIN THROUGH SAID BACK TURNED PORTION TOWARD SAID SEAT.