Rotary kinetic fluid motors or pumps – With means for re-entry of working fluid to blade set – Turbine regenerative pump
Reexamination Certificate
2001-10-29
2004-02-10
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
C415S169100, C416S24100B, C417S423300
Reexamination Certificate
active
06688844
ABSTRACT:
TECHNICAL FIELD OF THE INVENTION
The present invention generally relates to automotive fuel pumps, and more particularly to a regenerative turbine type rotary impeller.
BACKGROUND OF THE INVENTION
Regenerative fuel pumps have been widely used in automotive applications because of the low specific speed number (ratio of diameter and flow rate vs. pressure), quiet operation, good hot fuel handling and durability. Since the regenerative fuel pump was first introduced, there is typically a “dead zone” area in the top of the vane grooves. Therefore, there is a need for improvements to the impeller of a regenerative turbine fuel pump.
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Look Edward K.
McAleenan J. M.
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