Keywords: US4563997 Fig1 Pressure wave supercharger.png en <pre>US patent 4 563 997 Fig 1 1 Rotor housing 2 Rotor 3 Rotary shaft 4 Piston of engine E 5 Crankshaft 6 Crankshaft pulley 7 Rotary shaft pulley 8 Belt 9 Rotor cells 10 Air inlet 11 Air outlet 12 Exhaust gas inlet 13 Exhaust gas outlet 14 Cylinder of engine E 15 Intake passage 16 Exhaust passage E Piston engine E</pre> 2014-03-28 15 07 06 http //www freepatentsonline com/4563997 pdf Hachiro Aoki Japan Edited with Kolourpaint Custom license marker 2014 03 28 This illustration was published in US Patent 4 563 997 According to consensus reached in Wikimedia Commons that makes it belong to public domain Uploaded with UploadWizard Superchargers Internal combustion engines |