Abstract: A low-friction conveyor (10) including a conveyor belt (12) supported on self-contained rollers (32) riding along a carryway (22). The conveyor includes a modular conveyor belt constructed of a series of rows of belt modules (24, 25) connected into a loop by hinge joints between adjacent rows (26). The belt is supported on a carryway. Drive surfaces are accessible from the interior side (28) of the belt loop. Drive elements, such as sprockets (16), drive on the drive surfaces to move the belt along the carryway. The belt rollers are recessod inward of the outer side (29) of the belt loop and extend past the interior side of the belt loop. In this way, the rollers engage the carryway in low-friction, rolling contact.

Abstract: A traveling water screen comprising an endless foraminous belt with flights. The foraminous belt forms a water screen extending from a lower end in a flowing stream to an upper end above the surface of the stream. The stream flows through openings in the foraminous screen. The flights, which may be scoops, are arranged in spaced apart relation on the outer surface of the water screen. The water screen is driven in a direction so that its upstream portion advances upward and its downstream portion downward. The flights form inclined surfaces across the width of the screen from a point of highest elevation to one or more points of lowest elevation at one or both side edges of the screen. As the screen moves, the flights lift fish toward the surface. As a flight breaks the surface, fish slide down the inclined flights toward one or both side edges of the screen to be diverted safely.

Abstract: A modular belt constructed of belt modules having a large open area, making the belt suitable for use as a traveling water screen. The modules include an intermediate portion composed of intersecting sets of link elements and transverse elements that form a gridlike pattern. Openings bounded by the walls of consecutive link elements and transverse elements form channels through the belt for the flow of water. The modules are connected together by hinge rods to form a belt that can be used as a water screen. Detachable flights or scoops for lifting debris or fish out of a stream are attachable to base modules.

Abstract: A traveling water screen comprising an endless foraminous belt with flights. The foraminous belt forms a water screen extending from a lower end in a flowing stream to an upper end above the surface of the stream. The stream flows through openings in the foraminous screen. The flights, which may be scoops, are arranged in spaced apart relation on the outer surface of the water screen. The water screen is driven in a direction so that its upstream portion advances upward and its downstream portion downward. The flights form inclined surfaces across the width of the screen from a point of highest elevation to one or more points of lowest elevation at one or both side edges of the screen. As the screen moves, the flights lift fish toward the surface. As a flight breaks the surface, fish slide down the inclined flights toward one or both side edges of the screen to be diverted safely.

Abstract: A conveyor comprising an outer roller-top belt loop and an inner drive belt loop inside the outer belt loop for accurate and smooth control of conveyed articles. Rollers on the outer belt loop extend beyond outer and inner sides of the roller-top belt. The inner drive belt has an outer surface that frictionally contacts the rollers beneath the inner side of the outer belt loop along an article-conveying carryway portion of the conveying path. Relative motion between the two belts causes the drive belt to rotate the rollers it contacts. The outer belt loop and the inner belt loop can be driven at different speeds by separate drives. The relative speeds of the two belts determine the direction and speed of rotation of the rollers.

Abstract: A modular conveyor belt with a self-adjusting edge for bearing against a conveyor side rail. An edge pad, which can be made of a durable material for long wear life, pivotably attaches to the side edge of a belt row. The pivotable attachment allows the pad to adjust itself to maximize its contact area with the side rail.

Abstract: A low-friction conveyor (10) including a conveyor belt (12) supported on self-contained rollers (32) riding along a carryway (22). The conveyor includes a modular conveyor belt constructed of a series of rows of belt modules (24, 25) connected into a loop by hinge joints between adjacent rows (26). The belt is supported on a carryway. Drive surfaces are accessible from the interior side (28) of the belt loop. Drive elements, such as sprockets (16), drive on the drive surfaces to move the belt along the carryway. The belt rollers are recessed inward of the outer side (29) of the belt loop and extend past the interior side of the belt loop. In this way, the rollers engage the carryway in low-friction, rolling contact.