Pumps – Motor driven – Pump within rotary working member
Reexamination Certificate
2005-04-26
2005-04-26
Tyler, Cheryl (Department: 3746)
Pumps
Motor driven
Pump within rotary working member
C417S423800, C417S410100, C417S366000, C417S369000, C417S423100, C417S357000
Reexamination Certificate
active
06884043
ABSTRACT:
A fluid pump includes a pump head having an inlet for receiving fluid at a first pressure and an outlet for outputting fluid at a second pressure greater than the first pressure. Pressurized fluid is directed through a first passage to the outlet without the pressurized fluid leaving the pump head prior to reaching the outlet. A second passage directs pressurized fluid to a fluid circulation path which is at least partially external to the pump head with the fluid circulation path terminating adjacent the outlet. Pressurized fluid passing through the first and second passages is directed to the outlet without being re-pressurized by the pump head. The first and second passages are in opposed relation to one another to provide balancing of thrust produced by the flow of pressurized fluid through the passages. An electric motor drives the pump head. The fluid circulation path may include portions of the electric motor.
REFERENCES:
patent: 1974183 (1934-09-01), Gunderson
patent: 2518597 (1950-08-01), Brooks
patent: 2524269 (1950-10-01), Patterson
patent: 2906208 (1959-09-01), White
patent: 3067690 (1962-12-01), Herr et al.
patent: 3282222 (1966-11-01), Schwartz
patent: 3288073 (1966-11-01), Pezzillo
patent: 3911300 (1975-10-01), Lebkuchner
patent: 3972653 (1976-08-01), Travis et al.
patent: 4065231 (1977-12-01), Litzenberg
patent: 4115038 (1978-09-01), Litzenberg
patent: 4198191 (1980-04-01), Pierce
patent: 4780067 (1988-10-01), Suzuki et al.
patent: 4930996 (1990-06-01), Jensen et al.
patent: 5009578 (1991-04-01), Hyland
patent: 5034644 (1991-07-01), Kech
patent: 5624243 (1997-04-01), Omodaka et al.
patent: 5642991 (1997-07-01), Singleterry et al.
patent: 5919033 (1999-07-01), Singleterry et al.
patent: 5941695 (1999-08-01), Jensen et al.
patent: 5997264 (1999-12-01), Klein et al.
patent: 6120261 (2000-09-01), Al-Towailib
patent: 11 46 580 (1963-04-01), None
patent: 44 35 511 (1996-02-01), None
patent: 100 07 787 (2000-08-01), None
patent: 199 48 972 (2001-04-01), None
patent: 0 711 019 (1996-05-01), None
patent: 1 035 328 (2000-09-01), None
patent: 909 550 (1962-10-01), None
patent: 1 358 135 (1974-06-01), None
patent: 2 239 987 (1991-07-01), None
patent: 60030496 (1985-02-01), None
patent: 11182483 (1999-07-01), None
patent: WO 9914503 (1998-09-01), None
patent: WO 99 14503 (1999-03-01), None
patent: WO 01 29394 (2001-04-01), None
Harvey, III Robert E.
Kimberlin Robert R.
Larson William M.
Rawnsley, Jr. William C.
Luedeka Neely & Graham P.C.
Solak Timothy P.
Standex International Corp.
Tyler Cheryl
LandOfFree
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