F - Mech Eng,Light,Heat,Weapons – 04 – C
Patent
F - Mech Eng,Light,Heat,Weapons
04
C
F04C 25/02 (2006.01) F04C 23/00 (2006.01) F04C 29/12 (2006.01)
Patent
CA 2542616
A vacuum pump may include a tubular stator located between an intake plate and a back plate. Mating portions on the intake plate and back plate may be used to properly locate the stator. The stator may include two internal pump chambers separated by a divider plate. The divider plate may be located within an internal cavity of the stator. A rotor in each chamber may include vanes and may be offset from the center of the chamber. Each rotor may be fixed to a rotatable shaft for operation of the vacuum pump. In some embodiments, the divider plate may have a fluid passageway extending therethrough. The fluid passageway may be located within the area swept by the rotors. In some embodiments, an exhaust outlet may include a flutter valve having a shaped surface that prevents the flutter valve from fully closing.
Boehler Duane H.
West William G.
Piasetzki & Nenniger Llp
Ritchie Engineering Company Inc.
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