Abstract: A muffler mounting (26) for a muffler (21) which is connected to an internal combustion engine (11) by a rigid exhaust pipe (16). Previous mountings for such mufflers have either been of the rigid type, which subjects the muffler to undesired stresses resulting from shock, vibration or thermal expansion, or have utilized flexible rubber belting hangers which deteriorate rapidly when subjected to high temperatures. The present invention provides a relatively thin, flexible, generally-vertical metal hanger (52) comprised of a plurality of thin, stainless steel, strips (53) overlaid on one another, to flexibly connect and support the muffler (21) to the engine (11) or frame (12). The present invention is particularly useful in vehicles wherein the engine (11) is resiliently mounted on the frame (12) and wherein the muffler mounting (26) is subject to high temperatures, corrosion, and oxidation.

Abstract: A motorcycle has an engine with two banks of cylinders. One bank is forward of the other, and its exhaust pipe or pipes passes forwardly, downwardly, and outwardly of the frame, and then rearwardly beneath the side of the engine to reach a muffler and tailpipe. The frame includes a pivoted fork-like rear section with a power transmission. The rear exhaust pipe or pipes extends rearwardly and downwardly between the arms of the rear section, and makes connection with the muffler. In another embodiment for engines with multiple cylinders in each bank, the rear exhaust pipes cross over one another, and extend downwardly outside of the arms. They may also be elongated inside the muffler so the lengths of the forward and rear exhaust pipes are equal. They can connect with one another so as to share outlets into the muffler.

Abstract: An exhaust system of an automotive vehicle, comprises a muffler having a front end face to which an exhaust pipe is connected, and a tail pipe connected at its one end to the front end face of the muffler, the other end of the tail pipe being opened rearward of a rear end face of the muffler, so that the tail pipe is rendered considerably long to effectively silencing exhaust noise even in a small-sized passenger car having a narrow rear overhang.

Abstract: A marine stern drive includes an inboard engine having an exhaust passageway connected to an outboard drive unit having an exhaust passageway. A transom bracket assembly positioned between the engine and the drive unit permits vertical pivoting of the drive unit for steering and horizontal pivoting of the drive unit for steering and horizontal pivoting of the drive unit for trimming. The improvement includes a first exhaust pipe connected to the inboard engine and a second exhaust pipe connecting to the drive unit. The first exhaust pipe extends outward through the transom of the boat and has an open end position centered on and adjacent the vertical pivot axis and below the vertical pivot axis. The second exhaust pipe extends towards and ends in alignment with the end position of the first exhaust pipe to form an interface which includes an opening between the pipe ends.