Full-circumferential flow pump

Details Full-circumferential flow pump Full-circumferential flow pump

1995-11-22

1997-04-01

Thorpe, Timothy

Pumps

Motor driven

Electric or magnetic motor

41742311, 4151821, F04B 1703

Patent

active

056160135

ABSTRACT:
A full-circumferential flow pump includes a motor having a stator, a shaft rotatably disposed in the stator, and a rotor mounted on the shaft for rotation relative to the stator, an outer frame barrel disposed around the stator, an outer cylindrical pump casing disposed around the outer frame barrel with an annular space defined therebetween, and a pump assembly mounted on an end of the shaft for pumping a fluid into the annular space or pumping a fluid introduced from the annular space. The full-circumferential flow pump further includes an inner casing provided in the outer cylindrical pump casing for accommodating the impeller and a resilient seal disposed between the outer cylindrical pump casing and the inner casing for preventing a pumped fluid in the outer cylindrical pump casing from leaking towards a suction side of the impeller.

REFERENCES:
patent: 4172695 (1979-10-01), Uesugi
patent: 5358380 (1994-10-01), Arakawa
patent: 5385444 (1995-01-01), Kobayashi et al.
patent: 5388971 (1995-02-01), Kobayashi et al.
patent: 5401146 (1995-03-01), Moriya et al.
patent: 5478215 (1995-12-01), Kobayashi et al.
patent: 5494403 (1996-02-01), Kobayashi et al.
patent: 5494418 (1996-02-01), Moriya et al.
U.S. Application Serial No. 08/275,528 filed Jul. 15, 1994.
U.S. Application Serial No. 08/322,425 filed Oct. 13, 1994.
U.S. Application Serial No. 08/354,818 filed Dec. 8, 1994.
U.S. Application Serial No. 08/364,684 filed Dec. 28, 1994.
U.S. Application Serial No. 08/530,909 filed Sep. 20, 1995.
U.S. Application Serial No. 08/562,155 filed Nov. 22, 1995.
U.S. Application Serial No. 08/578,896 filed Dec. 27, 1995.
U.S. Patent Application Serial No. 08/598,651, filed Feb. 8, 1996, still pending.
U.S. Patent Application Serial No. 08/607,264, filed Feb. 21, 1996, still pending.

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