Pneumatic weighing system for load carrying vehicles

Claim 1

IN A LOAD CARRYING VEHICLE WHEREIN THE LOAD IS PNEUMATICALLY SUPPORTED AND SAID VEHICLE HAS A SOURCE OF AIR UNDER PRESSURE, A PLURALITY OF PENUMATIC SUPPORTS SUPPORTING SAID LOAD, AND FIRST CONDUIT MEANS JOINING SAID SOURCE TO SAID PNEUMATIC SUPPORTS, THE IMPROVEMENT COMPRISING: FIRST VALVE MEANS INTERPOSED IN SAID FIRST CONDUIT MEANS BETWEEN SAID SOURCE OF AIR UNDER PRESSURE AND SAID PNEUMATIC SUPPORTS, SAID FIRST VALVE MEANS BEING ADAPTED UPON ACTUATION TO DISCONNECT SAID SOURCE FROM SAID PNEUMATIC SUPPORTS; SECOND VALVE MEANS INTERPOSED IN SAID FIRST CONDUIT MEANS BETWEEN SAID SOURCE AND SAID FIRST VALVE MEANS; SECOND CONDUIT MEANS JOINING SAID FIRST AND SECOND VALVE MEANS, SAID SECOND VALVE MEANS BEING ADAPTED UPON ACTUATION TO PERMIT AIR UNDER PRESSURE TO FLOW THROUGH SAID SECOND CONDUIT MEANS , THEREBY TO ACTUATE SAID FIRST VALVE MEANS; PNEUMATIC SCALE MEANS CALIBRATED TO READ THE WEIGHT OF SAID LOAD ON SAID PNEUMATIC SUPPORTS; AND MEANS TO CONNECT SAID PNEUMATIC SCALE MEANS TO SAID FIRST CONDUIT MEANS BETWEEN SAID FIRST VALVE MEANS AND SAID PNEUMATIC SUPPORTS.