Positive safety disengageable steering column

Claim 1

A STEERING COLUMN DEVICE FOR A VEHICLE AND THE LIKE, COMPRISING STEERING SHAFT MEANS ENGAGEABLE AT ONE END WITH A STEERING GEAR LINKAGE OF A VEHICLE FOR ACTUATING THE SAME TO STEER SAID VEHICLE AND ENGAGEABLE AT ANOTHER END WITH A STEERING WHEEL OF SAID VEHICLE FOR BEING ROTATABLY ACUTATED BY ROTATION OF SAID STEERING WHEEL, HOLLOW TUBULAR HOUSING MEANS HAVING A LONGITUDINAL PASSAGEWAY FORMED THERETHROUGH FOR RECEIVING SAID STEERING SHAFT MEANS FOR ROTATION THEREIN, AND POSITIVE SAFETY MEANS CONSTRUCTED AND ARRANGED FOR BLOCKING REARWARD MOVEMENT TOWARD THE VEHICLE OPERATOR OF SAID STEERING SHAFT MEANS AS ITS END ENGAGEABLE WITH SAID STEERING WHEEL UPON FORCEABLE REARWARD IMPACT MOVEMENT OF SAID STEERING SHAFT MEANS AND ENGAGEABLE WITH SAID STEERING GEAR LINKAGE, AND WHEREIN SAID STEERING SHAFT MEANS COMPRISES A FIRST STEERING SHAFT SECTION ENGAGEABLE WITH SAID VEHICLE STEERING LINKAGE AT ITS OUTER END, AND A SECOND STEERING SHAFT SECTION ENGAGEABLE WITH SAID VEHICLE STEERING WHEEL AT ITS OUTER END FOR ROTATION THEREBY, SAID FIRST AND SECOND STEERING SHAFT SECTIONS BEING NORMALLY IN MUTUAL AXIAL ALIGNMENT FOR ROTATION TOGETHER, AND NORMALLY MUTUALLY INTERSPACED AT THEIR INNER ENDS, LINKAGE MEANS INTERCONNECTING SAID STEERING SHAFT SECTIONS AT THEIR ADJACENT INNER ENDS FOR ROTATION TOGETHER WHEN IN AXIAL ALIGNMENT, AND POSITIVE ENGAGEMENT CAM MEANS CARRIED BY SAID INNER ENDS OF SAID STEERING SHAFT SECTIONS AND NORMALLY OUT OF CAM CONTACT WITH EACH OTHER, AND CONSTRUCTED AND ARRANGED SO THAT UPON COLLISION IMPACT OR THE LIKE RESULTING IN REARWARD MOVEMENT OF SAID FIRST STEERING SHAFT SECTION TO BRING SAID CAM MEANS INTO CONTACT WITH EACH OTHER SAID RESULTANT CAM ACTION THROWS SAID STEERING SHAFT SECTIONS OUT OF MUTUAL AXIAL ALIGNMENT WITH EACH OTHER SO AS TO BLOCK REARWARD MOVEMENT OF SAID SECOND SHAFT SECTION AND SAID STEERING WHEEL BY SAID REARWARD MOVEMENT OF SAID FIRST SHAFT SECTION.