Patent ID: 8245837

Claim:
A tube conveyor system comprising at least a two tube sections and a corner assembly connecting said tube sections to define an angle or corner between said tube sections; said corner assembly comprising: a housing defining a wheel receiving area and a flow path defining an angle and having ports at opposite ends of said flow path; and a wheel rotatably received in said wheel receiving area; said wheel comprising: a rim having an upper surface and a lower surface; at least one pair of spaced apart channels formed in at least one of the upper and lower surfaces of the rim; the channels of said at least one pair of spaced apart channels facing away from each other; and at least one flapper pivotally mounted to said wheel inside of said rim; said flapper being movable between a first position in which said flapper is aligned with a wall of one of said channels and a second position in which said flapper is aligned with a wall of the other of said channels; wherein when said wheel rotates, said flapper will sweep any material in said wheel receiving area towards and through one of said channels and into said flow path.