Circumferential flow pump

Details Circumferential flow pump Circumferential flow pump

2007-11-06

2007-11-06

Edgar, Richard A. (Department: 3745)

Rotary kinetic fluid motors or pumps

With means for re-entry of working fluid to blade set

Turbine regenerative pump

C417S423300

Reexamination Certificate

active

11099497

ABSTRACT:
In a circumferential flow pump, a first groove sectional area (S1) of a feed passage at a pump cover side is set to be smaller than a second groove sectional area (S2) of a feed passage at a pump base side, whereby the diameter of an eddy flow occurring in the first groove sectional area (S1) is smaller than the diameter of an eddy flow occurring in the second groove sectional area (S2). Therefore, the fuel pressure of the feed passage at the pump cover side is set to be higher than that of the feed passage at the pump base side, and thus a vane wheel is formed to be pressed against the pump base side.

REFERENCES:
patent: 4403910 (1983-09-01), Watanabe et al.
patent: 5328325 (1994-07-01), Strohl et al.
patent: 5464319 (1995-11-01), Liskow
patent: 6174128 (2001-01-01), Yu
patent: 6422808 (2002-07-01), Moss et al.
patent: 6443692 (2002-09-01), Sakamoto et al.
patent: 2006/0008344 (2006-01-01), Ando et al.
patent: 04031660 (1992-02-01), None

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