Fluidizing container and system

Claim 1

IN A SYSTEM FOR ROCKDUSTING IN A MINE, A WHEELED CARRIER FOR ENTRY INTO A MINE, AN AIRTIGHT PNEUMATIC CONTAINER FOR PULVERULENT MATERIAL ON SAID CARRIER SAID CONTAINER BEING OF LESS HEIGHT THAN ITS SHORTEST TRANSVERSE DIMENSION AND HAVING AN OUTLET OPENING THROUGH ITS BOTTOM END WALL, A POROUS WALL PERVIOUS TO GAS ABOVE SAID BOTTOM END WALL EXTENDING OUTWARDLY FROM ADJACENT SAID OUTLET OPENING TO SUPPORT SAID PULVERULENT MATERIAL, AND FORMING A SPACE WITH SAID END WALL, AND SHEET BAFFLE MEANS SPACED ABOVE SAID POROUS WALL SLOPING FROM THE SIDES OF SAID CONTAINER TOWARD SAID OUTLET OPENING ON OPPOSITE SIDES OF SAID OUTLET OPENING AND DIRECTING AIR FROM THE SPACE BENEATH SAID POROUS WALL BETWEEN SAID BAFFLE AND POROUS WALL TO SAID OUTLET WITH SAID MATERIAL ENTRAINED THEREIN, MEANS ON SAID CARRIER TO SUPPLY AIR UNDER PRESSURE TO SAID SPACE, SAID CONTAINER HAVING AN INLET LEADING TO SAID SPACE AND CONNECTED TO SAID MEANS TO SUPPLY AIR, AND A CONDUIT CONNECTED TO SAID OUTLET TO DIRECT AIR ENTRAINED MATERIAL WITHIN SAID MINE.