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Class Information
Number: 416/237
Name: Fluid reaction surfaces (i.e., impellers) > Specific blade structure (e.g., shape, material, etc.) > Irregular, flanged or channel forming blade surface > Angular or offset
Description: Apparatus wherein the blade comprises two or more flat surfaces which (1) intersect in an angular relationship or (2) lie in different but substantially parallel planes united by a blade portion normal to the said surfaces.










Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8668446 Supersonic compressor rotor and method of assembling same Mar. 11, 2014
8668459 Turbine blade walking prevention Mar. 11, 2014
8641382 Turbocharger Feb. 4, 2014
8591195 Turbine blade with pressure side stiffening rib Nov. 26, 2013
8480372 System and method for reducing bucket tip losses Jul. 9, 2013
8469663 Transfer of kinetic energy to and from fluids Jun. 25, 2013
8430638 Noise reducer for rotor blade in wind turbine Apr. 30, 2013
8371819 Quiet propeller Feb. 12, 2013
8251663 Impeller for a pump unit and associated pump unit Aug. 28, 2012
8235672 Fan Aug. 7, 2012
8231343 Axial fan apparatus, axial-flow impeller, and electronic apparatus Jul. 31, 2012
8226363 Turbine wheel for a gas operated medical handpiece and medical handpiece having a turbine wheel, and method for milling a blade of a turbine wheel Jul. 24, 2012
8220986 High efficiency mixer-impeller Jul. 17, 2012
8177484 Impeller of multiblade blower and method of manufacuturing the same May. 15, 2012
8172518 Methods and apparatus for fabricating a rotor assembly May. 8, 2012
8162602 Turbomachine casing including a device for preventing instability during contact between the casing and the rotor Apr. 24, 2012
8118555 Fluid-flow machine and rotor blade thereof Feb. 21, 2012
8113782 Impeller structure of blower Feb. 14, 2012
8075273 Fan blade modifications Dec. 13, 2011
8070447 Ceiling fan Dec. 6, 2011
8025484 Fan rotor assembly Sep. 27, 2011
7997875 Winglet for wind turbine rotor blade Aug. 16, 2011
7976283 Noise reducer for rotor blade in wind turbine Jul. 12, 2011
7934907 Cuffed fan blade modifications May. 3, 2011
7931444 Wind turbine with rotor blades equipped with winglets and blades for such rotor Apr. 26, 2011
7874071 Method of making an ice dispense agitator Jan. 25, 2011
7854595 Wind turbine blade tip shapes Dec. 21, 2010
7845911 Shaped rotor blade for reduced loads and vibration Dec. 7, 2010
7832985 Rotor blade and wind energy plant Nov. 16, 2010
7811056 Turbine wheel for a gas operated medical handpiece and medical handpiece having a turbine wheel Oct. 12, 2010
7690895 Multi-piece passive load reducing blades and wind turbines using same Apr. 6, 2010
7670105 Drain pump, and air conditioner provided therewith Mar. 2, 2010
7654798 Fan blade modifications Feb. 2, 2010
7625181 Turbine cascade structure Dec. 1, 2009
7600975 Turbine and rotor therefor Oct. 13, 2009
7597543 Impeller and fluid pump having the same Oct. 6, 2009
7585155 Axial flow fan Sep. 8, 2009
7552885 Blender blade Jun. 30, 2009
7547193 Rotor blade assembly with high pitching moment airfoil section for a rotary wing aircraft Jun. 16, 2009
7509737 Fan blade manufacturing methods Mar. 31, 2009
7416381 Impeller for fuel pumps Aug. 26, 2008
7416386 Heat dissipation apparatus Aug. 26, 2008
7381027 Fan motor Jun. 3, 2008
7360995 Vertical axis windmill Apr. 22, 2008
7331765 Two-sweep rotary wing blade with limited taper ratio Feb. 19, 2008
RE39891 V-blade impeller design for a regenerative turbine Oct. 23, 2007
7278598 Blender blade Oct. 9, 2007
7207772 Compressor for an aircraft engine Apr. 24, 2007
7165945 Braided spar for a rotor blade and method of manufacture thereof Jan. 23, 2007
7147433 Profiled blades for turbocharger turbines, compressors, and the like Dec. 12, 2006

1 2 3 4










 
 
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