Rotary kinetic fluid motors or pumps – With means for re-entry of working fluid to blade set – Turbine regenerative pump
Reexamination Certificate
2005-01-04
2005-01-04
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
06837675
ABSTRACT:
A fuel pump capable of using the pump efficiency most efficiently without reducing the useful service life is provided. A relatively large clearance allowing for the expected amount of wear is ensured in a region where the flow passage groove pressure is low. In a region where the flow passage groove pressure is high, it is unnecessary to allow for the wear. Therefore, the clearance is set relatively small.
REFERENCES:
patent: 4445821 (1984-05-01), Watanabe et al.
patent: 4591311 (1986-05-01), Matsuda et al.
patent: 4619591 (1986-10-01), Iwai et al.
patent: 4948344 (1990-08-01), Cygnor
patent: 5257916 (1993-11-01), Tuckey
patent: 6499941 (2002-12-01), Fischer
patent: 4221184 (1994-01-01), None
patent: 19634734 (1998-03-01), None
patent: 7279881 (1995-10-01), None
English translation as provided by Japan Patent Office via computer (claims and specification).
Iwata Koichi
Nagasaka Kenzo
Usui Takayuki
Aisan Kogyo Kabushiki Kaisha
Baker & Botts LLP
Edgar Richard A.
Look Edward K.
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