Rotary kinetic fluid motors or pumps – With means for re-entry of working fluid to blade set – Turbine regenerative pump
Reexamination Certificate
2007-12-18
2007-12-18
Look, Edward K. (Department: 3745)
Rotary kinetic fluid motors or pumps
With means for re-entry of working fluid to blade set
Turbine regenerative pump
Reexamination Certificate
active
11038442
ABSTRACT:
A fuel pump includes a rotor, a rotating member, a pump portion, and a housing. The rotating member is rotated by the rotor to generate suction force for drawing fuel. The pump portion includes a pump casing that receives the rotating member. The housing receives the rotor and the pump portion. The housing has an inner circumferential periphery. The pump casing has an outer circumferential periphery. At least one of the inner circumferential periphery of the housing and the outer circumferential periphery of the pump casing has a plurality of protrusions that protrudes in a substantially radial direction. The plurality of protrusions is arranged in a circumferential direction. The plurality of protrusions is press-inserted into at least one of the inner circumferential periphery of the housing and the outer circumferential periphery of the pump casing.
REFERENCES:
patent: 3881839 (1975-05-01), MacManus
patent: 4958984 (1990-09-01), Aoi et al.
patent: 5174713 (1992-12-01), Iwai et al.
patent: 5551842 (1996-09-01), Schmid et al.
patent: A-59-150995 (1984-08-01), None
patent: B2-2-39638 (1990-09-01), None
Chinese Examination Report issued Apr. 10, 2007 in corresponding Chinese Application No. 200510004642.X, together with an English translation.
Denso Corporation
Hanan Devin
Look Edward K.
Nixon & Vanderhye PC
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