Structure, disposition or shape of gas-chambers

Child Classifications

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• F01N 2490/02 Two or more expansion chambers in series connected by means of tubes
• F01N 2490/08 Two or more expansion chambers in series separated by apertured walls only
• F01N 2490/10 Two or more expansion chambers in parallel
• F01N 2490/12 Chambers having variable volumes
• F01N 2490/14 Dead or resonance chambers connected to gas flow tube by relatively short side-tubes
• F01N 2490/15 Plurality of resonance or dead chambers
• F01N 2490/16 Chambers with particular shapes, e.g. spherical
• F01N 2490/18 Dimensional characteristics of gas chambers
• F01N 2490/20 Chambers being formed inside the exhaust pipe without enlargement of the cross section of the pipe, e.g. resonance chambers