Conveyors

Claim 1

A SELF CONTAINED AND PORTABLE CONVEYOR UNIT COMPRISING AN ELONGATED FLAT BASE ADAPTED TO BE SUPPORTED ON A HORIZONTAL SURFACE, AN ELONGATED HOLLOW MEMBER ADAPTED TO BE INFLATED WITH FLUID PRESSURE MOUNTED ON SAID BASE AND EXTENDING LONGITUDINALLY THEREOF, AN ELONGATED RIGID SUPPORT EXTENDING GENERALLY PARALLEL TO SAID BASE AND MOUNTED ON SAID ELONGATED HOLLOW MEMBER, A PLURALITY OF ROLLERS LONGITUDINALLY SPACED ABOVE SAID SUPPORT, MEANS ROTATABLY JOURNALLING SAID ROLLERS ON SAID SUPPORT MEANS, SAID MEANS INCLUDING AN AXIS FOR EACH ROLLER WHICH EXTENDS LATERALLY ACROSS SAID SUPPORT AND ELONGATED HOLLOW MEMBER, A PAIR OF VERTICAL SIDE WALLS EACH INTEGRALLY SECURED AT ITS BOTTOM EDGE TO A SIDE OF SAID BASE, A PAIR OF SPACED TOP FLANGES PARALLEL TO SAID BASE, EACH TOP FLANGE EXTENDING SUBSTANTIALLY THE FULL LENGTH OF THE UNIT AND SECURED TO THE TOP OF EACH SIDE WALL, SAID TOP FLANGES PROJECTING INWARDLY TOWARDS SAID ROLLERS, THE SPACE BETWEEN THE TOP FLANGES BEING OF GREATER WIDTH THAN THE LENGTH OF SAID ROLLERS WHEREBY SAID ROLLERS MAY BE FORCED UPWARDLY BETWEEN SAID TOP FLANGES BY SAID HOLLOW ELONGATED MEMBER WHEN IT IS INFLATED, AND STOP MEANS SECURED TO SAID SUPPORT AND ADAPTED TO ENGAGE SAID TOP FLANGES TO LIMIT VERTICAL UPWARD MOVEMENT OF SAID ROLLERS, SAID TOP FLANGES SERVING AS SEALS TO PREVENT FOREIGN MATTER FROM PASSING BETWEEN THE STOP MEANS AND SIDE WALLS.