Retractable seat belt construction

Claim 1

FOR COMBINATION WITH A VEHICLE HAVING A SEAT, SEAT BELT MEANS FOR HOLDING AN OCCUPANT IN PLACE ON SAID SEAT COMPRISING ANCHOR MEANS, A RETRACTABLE BELT, MEANS DETACHABLY INTERCONNECTING SAID ANCHOR MEANS AND ONE END OF SAID BELT IN ENCOMPASSING RELATION TO THE SEAT OCCUPANT, MEANS FOR RETRACTING SAID BELT ON DISCONNECTION OF IT FROM SAID ANCHOR MEANS, CLAMPING MEANS FOR CONNECTION TO THE VEHICLE AND OPERABLE BY FORCE APPLIED BY SAID BELT ON ITS MOVEMENT IN AN EXTENDING DIRECTION FOR APPLYING A CLAMPING FORCE TRANSVERSELY OF SAID BELT BETWEEN SAID RETRACTING MEANS AND SAID ONE END OF SAID BELT TO PREVENT FURTHER EXTENSION OF SAID BELT, SAID CLAMPING MEANS INCLUDING A STOP MEMBER AND A ROTATABLE ECCENTRIC CAM BETWEEN WHICH SAID BELT IS CLAMPED, AN ARM EXTENDING RADIALLY FROM SAID CAM, A LEVER ADAPTED TO BE PIVOTALLY MOUNTED ON A PART OF SAID VEHICLE THAT IS FIXED THERETO WHEN IT IS IN MOTION AND HAVING A FINGER FOR ENGAGING SAID ARM OF SAID CAM TO ROTATE IT IN A CLAMPING DIRECTION, AND MEANS CONNECTING SAID ANCHOR MEANS TO SAID LEVER TO ROTATE IT ON APPLICATION OF FORCE TO SAID BELT TO CAUSE SAID FINGER TO ENGAGE SAID ARM AND ROTATE SAID CAM TOWARD SAID STOP MEMBER TO CLAMP SAID BELT THEREBETWEEN.