Pneumatic apparatus for handling pulverulent materials

Claim 1

A PNEUMATIC HANDLING DEVICE FOR A CONTAINER FOR A TANK TYPE TRAILER COMPRISING, AN AIR PERVIOUS AIR SLIDE EXTENDING ALONG THE BOTTOM OF SAID CONTAINER, AT LEAST TWO AIR IMPERVIOUS SLOPE SHEETS EXTENDING ALONG OPPOSITE EDGES OF SAID AIR SLIDE, A PLURALITY OF RUBBER GASKETS, SAID SLOPE SHEET HAVING ITS PERIPHERAL EDGES WRAPPED ABOUT SAID RUBBER GASKET, MEANS SECURED TO THE BOTTOM OF SAID CONTAINER HAVING UPPER PLANAR SURFACES FOR RECEIVING SAID AIR SLIDE AND SLOPE SHEETS, STUDS ENGAGING SAID RECEIVING MEANS AND EXTENDING THEREABOVE, PASSAGEWAY MEANS BELOW SAID UPPER SURFACES PROVIDING A FLOW PATH FOR AIR FROM UNDER SAID SLOPE SHEET TO THE UNDER SURFACE OF SAID AIR SLIDE, THE ADJACENT LONGITUDINAL EDGES OF SAID AIR SLIDE AND SLOPE SHEETS BEING OVERLAPPED AND RESTING ON SAID UPPER PLANAR SURFACES, SAID OVERLAPPED EDGES HAVING HOLES THROUGH WHICH SAID STUDS PASS, A BASE ENGAGING SAID STUDS AND RESTING ON SAID OVERLAPPED EDGES, BUTS ENGAGING SAID STUDS AND TIGHTENED SO THAT SAID OVERLAPPED EDGES ARE CLAMPED BETWEEN SAID BARS AND SAID RECEIVING MEANS, MEANS AIR TIGHTLY CLAMPING THE REMAINING EDGES OF EACH SLOPE SHEET TO SAID CONTAINER, AND MEANS AIR TIGHTLY CLAMPING THE REMAINING EDGES OF SAID AIR SLIDE TO SAID CONTAINER.