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Class Information
Number: 416/177
Name: Fluid reaction surfaces (i.e., impellers) > Spiral blade or flow passage (360 degree) > Flow confining casing, shroud or passage
Description: Apparatus wherein the impeller comprises (1) a circumferentially continuous working fluid directing surface integral with the working members thereof or (2) a flow passage which wholly confines the working fluid while in working engagement therewith.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7600963 |
Fluid energy converter |
Oct. 13, 2009 |
| 7497657 |
Beam jet propellor |
Mar. 3, 2009 |
| 7455497 |
High performance inducer |
Nov. 25, 2008 |
| 7443671 |
Axial duct cooling fan |
Oct. 28, 2008 |
| 7090460 |
Pump embodied as a side channel pump |
Aug. 15, 2006 |
| 6962479 |
Compound centrifugal and screw compressor |
Nov. 8, 2005 |
| 6910483 |
Double-ended blower and volutes therefor |
Jun. 28, 2005 |
| 6890142 |
Direct condensing turbine |
May. 10, 2005 |
| 6881026 |
Screw compressors with rotor and casing design for controlling deflections |
Apr. 19, 2005 |
| 6837684 |
Pump impeller |
Jan. 4, 2005 |
| 6702553 |
Abradable material for clearance control |
Mar. 9, 2004 |
| 6499718 |
Fluent material container and dispenser |
Dec. 31, 2002 |
| 6474939 |
Cell for pumping a multiphase effluent and pump comprising at least one of the cells |
Nov. 5, 2002 |
| 6468029 |
Pump device |
Oct. 22, 2002 |
| 6439834 |
Oil field tool |
Aug. 27, 2002 |
| 6357997 |
Ribbon drive power generation apparatus and method |
Mar. 19, 2002 |
| 6273672 |
Two-phase helical mixed flow impeller with curved fairing |
Aug. 14, 2001 |
| 6158959 |
Pump impeller |
Dec. 12, 2000 |
| 6132172 |
Windmill |
Oct. 17, 2000 |
| 6053700 |
Ducted turbine |
Apr. 25, 2000 |
| 6036443 |
Helical turbine assembly operable under multidirectional gas and water flow for power and propulsion systems |
Mar. 14, 2000 |
| 5997242 |
Hydraulic turbine |
Dec. 7, 1999 |
| 5878808 |
Rotating heat exchanger |
Mar. 9, 1999 |
| 5694771 |
Drive mechanism |
Dec. 9, 1997 |
| 5527159 |
Rotary blood pump |
Jun. 18, 1996 |
| 5501574 |
Blood pump |
Mar. 26, 1996 |
| 5451137 |
Unidirectional helical reaction turbine operable under reversible fluid flow for power systems |
Sep. 19, 1995 |
| 5382092 |
Mixing apparatus and bottom ribbon blade used therein |
Jan. 17, 1995 |
| 5368438 |
Blood pump |
Nov. 29, 1994 |
| 5344281 |
Rotary vortex machine |
Sep. 6, 1994 |
| 5312224 |
Conical logarithmic spiral viscosity pump |
May. 17, 1994 |
| 5290145 |
Multiple stage drag and dynamic pump |
Mar. 1, 1994 |
| 5281086 |
Pump for viscous fluids |
Jan. 25, 1994 |
| 5261783 |
Kinetic pump having a centerless impeller |
Nov. 16, 1993 |
| 5181868 |
Jet propulsion device for watercraft, aircraft, and circulating pumps |
Jan. 26, 1993 |
| 5167483 |
Method for utilizing angular momentum in energy conversion devices and an apparatus therefore |
Dec. 1, 1992 |
| 5139391 |
Rotary machine with non-positive displacement usable as a pump, compressor, propulsor, generator or drive turbine |
Aug. 18, 1992 |
| 5112188 |
Multiple stage drag and dynamic turbine downhole motor |
May. 12, 1992 |
| 5102294 |
Screw pump |
Apr. 7, 1992 |
| 5098258 |
Multiple stage drag turbine downhole motor |
Mar. 24, 1992 |
| 5000658 |
Apparatus for pumping high consistency fiber suspension |
Mar. 19, 1991 |
| 4813849 |
Fluid pump with air inducer |
Mar. 21, 1989 |
| 4789299 |
Liquid and air pump B |
Dec. 6, 1988 |
| 4448685 |
Aerating apparatus utilizing rotating impeller vane |
May. 15, 1984 |
| 4258271 |
Power converter and method |
Mar. 24, 1981 |
| 4239449 |
Screw pump construction |
Dec. 16, 1980 |
| 4176283 |
Water powered generator |
Nov. 27, 1979 |
| 4170436 |
Screw pumps with modular construction |
Oct. 9, 1979 |
| 4143999 |
Fluid machines |
Mar. 13, 1979 |
| 4097186 |
Multi-stage ring type centrifugal pumps with inducer means |
Jun. 27, 1978 |
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