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Class Information
Number: 416/227A
Name: Fluid reaction surfaces (i.e., impellers) > Specific blade structure (e.g., shape, material, etc.) > Openwork (e.g., lattice, looped, etc.) > Propeller and non-mixers
Description:










Patents under this class:
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Patent Number Title Of Patent Date Issued
8690541 Turbine and a rotor for a turbine Apr. 8, 2014
8678768 Vertical axis turbine Mar. 25, 2014
8470425 Composite cores and panels Jun. 25, 2013
8389104 Composite cores and panels Mar. 5, 2013
8360720 In-pipe hydro-electric power system and turbine Jan. 29, 2013
8167571 Horizontal axis wind turbine rotor assembly with lifting body rotor blades May. 1, 2012
8070451 Modular construction for wind turbine blade Dec. 6, 2011
8061993 Vertical axis turbine Nov. 22, 2011
7959411 In-pipe hydro-electric power system and turbine Jun. 14, 2011
7896609 Vertical axis wind turbine system Mar. 1, 2011
7396208 Divided blade rotor Jul. 8, 2008
7144222 Propeller Dec. 5, 2006
7018167 Fluid machinery Mar. 28, 2006
6840741 Leading edge slat airfoil for multi-element rotor blade airfoils Jan. 11, 2005
6736600 Rotor with a split rotor blade May. 18, 2004
6099256 Three dimensional figure eight propeller/impeller blade apparatus Aug. 8, 2000
6036443 Helical turbine assembly operable under multidirectional gas and water flow for power and propulsion systems Mar. 14, 2000
5890875 Blade apparatus Apr. 6, 1999
5642984 Helical turbine assembly operable under multidirectional fluid flow for power and propulsion systems Jul. 1, 1997
5531567 Vertical axis wind turbine with blade tensioner Jul. 2, 1996
5419683 Wind turbine May. 30, 1995
5405246 Vertical-axis wind turbine with a twisted blade configuration Apr. 11, 1995
5330325 Agitating vane Jul. 19, 1994
5269647 Wind-powered rotor Dec. 14, 1993
5252029 Vertical axis wind turbine Oct. 12, 1993
5176501 Propeller with an elastic sleeve Jan. 5, 1993
5171127 Vertical axis sail bladed wind turbine Dec. 15, 1992
5161952 Dual-plane blade construction for horizontal axis wind turbine rotors Nov. 10, 1992
4648312 Apparatus for ventilating an enclosed area Mar. 10, 1987
4636143 Propeller for gaseous and fluidic media Jan. 13, 1987
4624624 Collapsible vertical wind mill Nov. 25, 1986
4610601 Method of making axial fan impeller Sep. 9, 1986
4575311 Gear box assembly-upper head assembly Mar. 11, 1986
4553037 Solar breeze power package and saucer ship Nov. 12, 1985
4545726 Turbine Oct. 8, 1985
4543042 Windmill rotor Sep. 24, 1985
4525911 Method and apparatus for attaching blades to rotating structures Jul. 2, 1985
4504192 Jet spoiler arrangement for wind turbine Mar. 12, 1985
4500257 Wind turbine spoiler Feb. 19, 1985
4449053 Vertical axis wind turbine May. 15, 1984
4445817 Propeller construction May. 1, 1984
4422825 Controlled wind motor Dec. 27, 1983
4392785 Pump control system for windmills Jul. 12, 1983
4379972 Turbine ventilator Apr. 12, 1983
4368007 Fluid driven turbine Jan. 11, 1983
4334823 Wind or fluid current turbine Jun. 15, 1982
4329116 Wind turbine of cross-flow type May. 11, 1982
4325674 Wind turbine of cross-flow type Apr. 20, 1982
4293279 Vertical axis wind turbine Oct. 6, 1981
4284278 Flying toy Aug. 18, 1981

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