Pneumatically actuated vacuum pump having multiple venturi gaps and check valves
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United States of America Patent
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May 23, 2017
Grant Date -
Feb 11, 2016
app pub date -
Aug 6, 2014
filing date -
Aug 6, 2014
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A pneumatically actuated vacuum pump is disclosed, and includes a body defining a converging motive section, a diverging discharge section, at least one suction port, and a Venturi gap. The Venturi gap is located between an outlet end of the converging motive section and an inlet end of the diverging discharge section. The pneumatically actuated vacuum pump also includes a first check valve fluidly connected to the Venturi gap and the suction port. The pneumatically actuated vacuum pump further includes at least one second gap located in the diverging discharge section of the body downstream of the Venturi gap. A second check valve is fluidly connected to the second gap.
First Claim
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International Classification(s)
- F02M:SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBU....
- F02P:IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INT....
- G05D:SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC....
- F02B:INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENG....
- F04F:PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUI....
- F02D:CONTROLLING COMBUSTION ENGINES
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