Abstract: The present invention, hereinafter referred to as the Basketball Return System employs a frame and net to catch the ball, whether made or missed, and funnels the ball directly back to the shooter at the free-throw line. The Basketball Return System consists of a frame to be clamped onto the basketball goal's backboard, and a net which hangs down from the frame and trails out toward the free-throw line. The frame is clamped to the bottom edge of the backboard, and extends downward slightly below the bottom of the backboard, tapering inward from the sides. The frame also extends upward on each side of the basket, with a forward-projecting fin or wall on each side of the hoop, and a shelf-like crosspiece projection above the hoop. From the bottom of the Basketball Return System frame is hung a net, similar in weave to the basketball net, and this net tapers inward from the frame and is laid out in a narrowing drape toward the free-throw line.

Abstract: A fuel inlet system (12) for an internal combustion engine (10) comprises a heat exchanger (22), heated by engine exhaust gases, to preheat air being supplied to a carburetor (14). The air is introduced into the carburetor (14) at a temperature of between about 375.degree. to 400.degree. F. The carburetor (14) has an annular heating chamber (122) in which the heated air is circulated. A fuel inlet conduit (63) is in thermal contact with the heated air in the heating chamber (122) to preheat the fuel. The air and fuel is mixed in two stages, the first being during travel along a conduit (144) and the second in a mixing chamber (170) in the carburetor (14). The carburetor (14) includes a valve (148) for restricting the amount of air flowing to the mixing chamber (170). The fuel inlet system (12) further comprises means (20) for adding water to the air/fuel mixture.