Two-stage pump with high head and low delivery

Details Two-stage pump with high head and low delivery Two-stage pump with high head and low delivery

2005-05-17

2005-05-17

Look, Edward K. (Department: 3745)

Rotary kinetic fluid motors or pumps

Working fluid passage or distributing means associated with...

Plural rigidly related blade sets

C415S206000, C416S19800R, C417S423500

Reexamination Certificate

active

06893219

ABSTRACT:
A pump includes a body, an actuating shaft, on which at least a first impeller and a second impeller are axially mounted, a fluid intake duct and a fluid delivery duct. The pump further includes front and rear chambers, first and second volutes, first and second discharge orifices and a channel inside the body for throughflow of fluid to the second impeller.

REFERENCES:
patent: 3825366 (1974-07-01), Herrick
patent: 3934752 (1976-01-01), Ravicchio et al.
patent: 5320489 (1994-06-01), McKenna

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