US Patent 7814615 Blower attachment for raking debris

A raking attachment for an air stream generating device is adapted to direct an air stream generated by air stream generating device into a loosely defined plane. The raking attachment comprises a generally triangular shaped top wall, an opposing triangular shaped bottom face, side walls and an inlet throat with the side walls joined to at least a portion of the top wall and the bottom face wherein the top wall, bottom face and side walls extend longitudinally from the inlet throat. The top wall also extends beyond a terminal end of the bottom face and terminates in an end wall that is disposed at a angle relative to the top wall.