Dual motorcycle exhaust system
September 25, 2022. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3545414 Exhaust cleaning device for a multi-cylinder internal combustion engine Chambered-core motorcycle-exhaust apparatus Exhaust system for multicylinder motorbike engine Thermal management system for catalytic converters Exhaust cooling system for vehicles Motorcycle exhaust system Exhaust system for a motorcycle Patent #: 6334501 InventorApplicationNo. 10255131 filed on 09/25/2002US Classes:60/313, Correlated exhausts from plural cylinders60/312, Pulsed, timed, tuned or resonating exhaust60/322, Having vibration attenuating, or expansion and contraction relieving structure180/89.2, With means for handling exhaust of a motor180/296, Including means on body frame or motor for handling exhaust60/323, Common receiver having inlets from plural cylinder (i.e., exhaust manifold)60/293, Check valve feeds air to exhaust system181/227, Pipe-muffler (e.g., tail pipe type)60/284, Automatic or timed reactor purge or heat-up in engine starting operation60/272, INTERNAL COMBUSTION ENGINE WITH TREATMENT OR HANDLING OF EXHAUST GAS180/219, Arranged in tandem180/309With means for handling motor exhaustExaminersPrimary: Tran, Binh X.Attorney, Agent or FirmInternational ClassF02B 2702AbstractAn exhaust system for an internal combustion engine having a first cylinder and a second cylinder from which pulses of exhaust gas exit and are routed along separate paths towards the exhaust mufflers. The exhaust system independently routes the pulses of exhaust gas from the two cylinders. The exhaust gases that are expelled from the first cylinder are routed through a first exhaust pipe. The exhaust gases that are expelled from the second cylinder are routed through a second exhaust pipe assembly. The second exhaust pipe assembly routes the exhaust gasses from an exhaust port for the second cylinder laterally across the motorcycle to achieve a true dual exhaust system. The second exhaust pipe assembly provides an approximate equal length flow path as compared to the path used by the exhaust gasses that are expelled from the first cylinder.Field of SearchPulsed, timed, tuned or resonating exhaustCorrelated exhausts from plural cylinders Two-cycle engine Having vibration attenuating, or expansion and contraction relieving structure Common receiver having inlets from plural cylinder (i.e., exhaust manifold) With means for handling exhaust of a motor Having frame element or fender constituting also exhaust or fuel passageway or fuel reservoir Including means on body frame or motor for handling exhaust With means for handling motor exhaust | |
