The Roots type blower is a positive displacement lobe pump which operates by pumping a fluid with a pair of meshing lobes not unlike a set of stretched gears. Fluid is trapped
What is a roots type blower and how does it work? - tec-science
Root blower | 3D CAD Model Library | GrabCAD
Roots Booster Pumps | Becker Pumps
Design and assembly of root blower compressor / supercharger - fusion 360 tutorial - YouTube