Rotary kinetic fluid motors or pumps – With means for re-entry of working fluid to blade set
Reexamination Certificate
2006-06-09
2008-08-26
Kershteyn, Igor (Department: 3745)
Rotary kinetic fluid motors or pumps
With means for re-entry of working fluid to blade set
C415S053100, C416S237000, C416SDIG004
Reexamination Certificate
active
07416381
ABSTRACT:
A fuel pump for a vehicle comprises: a driving motor; an impeller having a substantially circular shape, the impeller being rotatable by operation of the driving motor; and a pump casing covered with a casing cover, the pump casing and casing cover together defining a central cavity for receiving the impeller rotatable therein, the pump casing and casing cover including a fuel inlet port and a fuel outlet port, the pump casing and casing cover each further including a circular groove formed along the surface thereof in respective fluid communication with the central cavity of the pump casing and casing cover. The impeller includes a plurality blades of generally V-shape cross-section disposed along an outer surface of the impeller with a plurality of blade grooves defined between the blades, the blade grooves in fluid communication with respective circular groove of the pump casing and casing cover, wherein each of the blades includes a fuel inlet blade portion disposed at an inner area of the blade grooves and a fuel outlet blade portion disposed at an outer area of the blade grooves, with a boundary portion disposed between the fuel inlet blade portion and the fuel outlet blade portion, in which a front surface angle and a rear surface angle of each of the fuel inlet blade portion and the fuel outlet blade portion respectively varies relative to the length of each of the blades.
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Baek Se-Dong
Chang Sung-Uk
Kim Young-Hoon
Park Jae-Seung
Kershteyn Igor
Korea Automotive Fuel Systems Ltd.
Tuchman & Park LLC
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