Keywords: Pressure wave supercharger.png en <pre>US Patent 4 838 234 Fig 1 1 Rotor casing 2 Cell rotor 3 Rotor cells 4 Shroud 5 Hub tube 6 Air casing 7 Gas casing 8 Rotor shaft 9 Clutch 10 Electric motor 11 Air induction duct 11' Low pressure air ports 12 Supercharged air duct 13 Gas inlet duct 14 Exhaust gas duct 14' Low pressure gas ports</pre> 2014-03-28 01 12 47 http //worldwide espacenet com/textdoc DB EPODOC IDX US4838234 Andreas Mayer Switzerland The drawing was edited with Kolourpaint Custom license marker 2014 03 27 This illustration was published in US Patent 4 838 234 According to consensus reached in Wikimedia Commons that makes it belong to public domain Uploaded with UploadWizard Internal combustion engines Patent drawings Superchargers |