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Class Information
Number: 416/242
Name: Fluid reaction surfaces (i.e., impellers) > Specific blade structure (e.g., shape, material, etc.) > Reverse curve surface
Description: Apparatus wherein a surface of the blade is curved in two or more directions, (e.g., sinuous).










Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8702398 High camber compressor rotor blade Apr. 22, 2014
8678745 Rotor blade design for a wells turbine Mar. 25, 2014
8668461 Wind turbine rotor blade Mar. 11, 2014
8668462 Wind turbine rotor blade Mar. 11, 2014
8613592 Guide blade of a turbomachine Dec. 24, 2013
8602739 Wind turbine rotor blade and pitch regulated wind turbine Dec. 10, 2013
8579593 Damping element for reducing the vibration of an airfoil Nov. 12, 2013
8517690 Double leading edge airfoil for wind turbine blade root Aug. 27, 2013
8480372 System and method for reducing bucket tip losses Jul. 9, 2013
8464426 Gas turbine engine airfoil Jun. 18, 2013
8439645 High pressure turbine blade airfoil profile May. 14, 2013
8393872 Turbine airfoil Mar. 12, 2013
8337164 Turbomolecular pump Dec. 25, 2012
8277192 Turbine blade Oct. 2, 2012
RE43710 Swept turbomachinery blade Oct. 2, 2012
8272838 Impeller and pump including the same Sep. 25, 2012
8221086 Propeller Jul. 17, 2012
8215916 Axial flow fan Jul. 10, 2012
8192153 Aerofoil members for a turbomachine Jun. 5, 2012
8182232 Wind generator blade with divergent trailing edge May. 22, 2012
8167567 Gas turbine engine airfoil May. 1, 2012
8133012 Transonic airfoil and axial flow rotary machine Mar. 13, 2012
8096777 Mixed flow turbine or radial turbine Jan. 17, 2012
8092189 Axial flow pump Jan. 10, 2012
8079823 Fan blades Dec. 20, 2011
8052395 Air cooled bucket for a turbine Nov. 8, 2011
8052386 Mixed flow roof exhaust fan Nov. 8, 2011
8011882 Vane assembly Sep. 6, 2011
7985052 Curved blade for wind turbines Jul. 26, 2011
7946826 Wind turbine rotor blade with a suction side winglet May. 24, 2011
7883324 Wind turbine airfoil family Feb. 8, 2011
7794202 Turbine blade Sep. 14, 2010
7740451 Turbomachine blade Jun. 22, 2010
7708257 Apparatus for treating solids May. 4, 2010
7597544 Blade of axial flow-type rotary fluid machine Oct. 6, 2009
7585155 Axial flow fan Sep. 8, 2009
7476086 Tip cambered swept blade Jan. 13, 2009
7374403 Low solidity turbofan May. 20, 2008
7344360 Wind turbine rotor blade with in-plane sweep and devices using same, and methods for making same Mar. 18, 2008
7241114 Rotor for a centrifugal pump Jul. 10, 2007
7217101 Turbine rotor blade for gas turbine engine May. 15, 2007
7204676 Fan blade curvature distribution for high core pressure ratio fan Apr. 17, 2007
7195456 Turbine engine guide vane and arrays thereof Mar. 27, 2007
7144223 Supercavitating propeller with adjustable cup, and the method to adjust said cup Dec. 5, 2006
7121807 Axial-flow fan Oct. 17, 2006
7040859 Wind turbine May. 9, 2006
6991431 Ceiling fan blade Jan. 31, 2006
6991426 Variable pitch fan Jan. 31, 2006
6974309 Straight wing type wind and water turbine Dec. 13, 2005
6910861 Turbomolecular vacuum pump with the rotor and stator vanes Jun. 28, 2005

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