| |
 |
|
Class Information
Number: 416/176
Name: Fluid reaction surfaces (i.e., impellers) > Spiral blade or flow passage (360 degree)
Description: Apparatus wherein the impeller* comprises a blade* projecting radially outwardly from a hub or shaft or a flow passage which wholly confines the working fluid while in working engagement therewith, the blade or flow passage extending circumferentially at least substantially one complete flight around the hub or shaft and the peripheral edge of the blade or flow passage defining a spiral path about the hub or shaft axis.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7497657 |
Beam jet propellor |
Mar. 3, 2009 |
| 7455497 |
High performance inducer |
Nov. 25, 2008 |
| 7443671 |
Axial duct cooling fan |
Oct. 28, 2008 |
| 7220105 |
Ornamental wind turbine apparatus |
May. 22, 2007 |
| 7207767 |
Inducer, and inducer-equipped pump |
Apr. 24, 2007 |
| 7052230 |
Pump assembly |
May. 30, 2006 |
| 7044713 |
Wind power generator with multiple rotary wings |
May. 16, 2006 |
| 6935841 |
Fan assembly |
Aug. 30, 2005 |
| 6881026 |
Screw compressors with rotor and casing design for controlling deflections |
Apr. 19, 2005 |
| 6612804 |
Swirling compressor |
Sep. 2, 2003 |
| 6592335 |
Ribbon drive pumping apparatus and method |
Jul. 15, 2003 |
| 6551054 |
Method and apparatus for pumping a material and a rotor for use in connection therewith |
Apr. 22, 2003 |
| 6527520 |
Ribbon drive pumping with centrifugal contaminant removal |
Mar. 4, 2003 |
| 6514035 |
Multiple-type pump |
Feb. 4, 2003 |
| 6439834 |
Oil field tool |
Aug. 27, 2002 |
| 6435829 |
High suction performance and low cost inducer design blade geometry |
Aug. 20, 2002 |
| 6428275 |
Helical wind rotor and a method for manufacturing the same |
Aug. 6, 2002 |
| 6390768 |
Pump impeller and related components |
May. 21, 2002 |
| 6367247 |
Air engine |
Apr. 9, 2002 |
| 6357998 |
Ribbon drive pumping apparatus and method |
Mar. 19, 2002 |
| 6343909 |
Centrifugal pump |
Feb. 5, 2002 |
| 6132172 |
Windmill |
Oct. 17, 2000 |
| 6126386 |
Pump and medium circulation apparatus |
Oct. 3, 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 |
| 5810289 |
High velocity propeller |
Sep. 22, 1998 |
| 5642984 |
Helical turbine assembly operable under multidirectional fluid flow for power and propulsion systems |
Jul. 1, 1997 |
| 5527159 |
Rotary blood pump |
Jun. 18, 1996 |
| 5425617 |
Constant static pressure runner in an axial flow turbine |
Jun. 20, 1995 |
| 5411422 |
Spiral propeller having axial void |
May. 2, 1995 |
| 5137417 |
Wind energy conversion system |
Aug. 11, 1992 |
| 5102294 |
Screw pump |
Apr. 7, 1992 |
| 4850798 |
Modified helicoidal wind responsive device |
Jul. 25, 1989 |
| 4792282 |
Liquid pump |
Dec. 20, 1988 |
| 4734067 |
Hydro-rotor |
Mar. 29, 1988 |
| 4722665 |
Turbine |
Feb. 2, 1988 |
| 4718821 |
Windmill blade |
Jan. 12, 1988 |
| 4708585 |
Centrifugal pump |
Nov. 24, 1987 |
| 4708592 |
Helicoidal structures, useful as wind turbines |
Nov. 24, 1987 |
| 4648787 |
Apparatus for transporting and/or mixing gases |
Mar. 10, 1987 |
| 4647215 |
Ragless propeller draft tube mixer |
Mar. 3, 1987 |
| 4637941 |
Segmented geometric structure |
Jan. 20, 1987 |
| 4616974 |
Wind driven power generating apparatus |
Oct. 14, 1986 |
| 4575256 |
Ragless propeller draft tube mixer |
Mar. 11, 1986 |
| 4500259 |
Fluid flow energy converter |
Feb. 19, 1985 |
| 4427343 |
Efficient wind turbine design for low velocity air flow |
Jan. 24, 1984 |
| 4427336 |
Single vane rotodynamic impeller |
Jan. 24, 1984 |
| 4412417 |
Wave energy converter |
Nov. 1, 1983 |
| 4396852 |
Windmill |
Aug. 2, 1983 |
| D269665 |
Mobile |
Jul. 12, 1983 |
|
|
|
