Multiple stage pump with multiple external control valves

Details Multiple stage pump with multiple external control valves Multiple stage pump with multiple external control valves

2006-08-15

2006-08-15

Tyler, Cheryl (Department: 3746)

Pumps

With condition responsive pumped fluid control

Plural pump units with individual or relative control

C417S288000, C417S426000, C417S428000, C417S300000, C417S304000, C123S466000

Reexamination Certificate

active

07090473

ABSTRACT:
A multiple stage pump having valves downstream from each respective pump in a same line thereof. The respective lines then merge into a common line. The multiple stage pump prevents pressure variations and shot to shot fuel variations.

REFERENCES:
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patent: 5357929 (1994-10-01), McCandless
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patent: 5619969 (1997-04-01), Liu et al.
patent: 5678521 (1997-10-01), Thompson et al.
patent: 5682845 (1997-11-01), Woody
patent: 0 515 965 (1992-12-01), None

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