Freeway safety device

Claim 1

A VEHICLE ARRESTING DEVICE FOR STOPPING VEHICLES APPROACHING FREEWAY RAMPS IN THE WRONG DIRECTION, AND COMPRISING, A FRAMEWORK SUNK BENEATH THE RAMP SURFACE, A GRATING MOUNTED ON THE TOP OF THE FRAMEWORK FORMING A CONTINUATION OF SAID SURFACE, A TRIP PANEL DISPOSED AT ONE END OF THE FRAMEWORK, AN ENERGY STORAGE TANK DISPOSED WITHIN THE FRAMEWORK, TWO CYLINDERS SECURED WITHIN THE FRAMEWORK FOR OPERATION LONGITUDINALLY THEREOF BY SAID STORAGE TANK IN RESPONSE TO ACTUATION OF THE PANEL, A SHAFT MOUNTED BETWEEN LONGITUDINAL GUIDES FOR MOVEMENT IN A ROTATIONAL AND LONGITUDINAL MANNER WITH RESPECT TO THE FRAMEWORK, ARRESTER JAWS SECURED TO THE SHAFT AND PROTRUDING RADIALLY THEREFROM, A FLOATING LINKAGE EXTENDING BETWEEN THE CYLINDERS AND THE ENDS OF THE SHAFT CAUSING ROTATION THEREOF, SAID JAWS ADAPTED TO PROJECT THROUGH AND ABOVE SAID GRATING IN RESPONSE TO ROTATION OF THE SHAFT TO ENGAGE A VEHICLE, AND SHOCK ABSORBERS RESTRAINING LONGITUDINAL MOVEMENT OF THE SHAFT AND JAWS WITH RESPECT TO THE FRAMEWORK.