Vacuum pump
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A vacuum pump is a type of pump device that draws gas particles from a sealed volume in order to leave behind a partial vacuum. The first vacuum pump was invented in 1650 by Otto von Guericke, and was
Student of Smolny Institute Catherine Molchanova with vacuum pump, by Dmitry Levitzky, 1776
A cutaway view of a turbomolecular high vacuum pump
Roots blower
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The Roots blower is a positive displacement lobe pump which operates by pumping a fluid with a pair of meshing lobes resembling a set of stretched gears. Fluid is trapped in pockets surrounding the lo
Vacuum pump
…External vane pump Roots blower, also called a booster pump, has highest pumping speeds but low compression ratio Multistage Roots pump that combine several stages providing high…
An Eaton M62 roots-type supercharger is visible at the front of this Ecotec LSJ engine in a 2006 Saturn Ion Red Line.