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Class Information
Number: 416/239
Name: Fluid reaction surfaces (i.e., impellers) > Specific blade structure (e.g., shape, material, etc.) > Blade cuff or shank construction
Description: Apparatus comprising (1) fairing structure supported adjacent the inner end of the blade or (2) the specific shape or construction of the lower portion of the blade intermediate the reaction surface and the root, as in Fig. II in the Class Definition of this class.










Patents under this class:
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Patent Number Title Of Patent Date Issued
6250886 Axial flow fan and fan blade Jun. 26, 2001
6190128 Cooled moving blade for gas turbine Feb. 20, 2001
6176681 Rotor blade with improved attachment on a hub of a fan Jan. 23, 2001
6126398 Two-piece rotor blade for a bearingless rotor of a helicopter Oct. 3, 2000
6056838 Method for manufacturing a variable-pitch composite blade for a helicopter rotor May. 2, 2000
6019580 Turbine blade attachment stress reduction rings Feb. 1, 2000
6004101 Reinforced aluminum fan blade Dec. 21, 1999
5954474 Hydro-turbine runner Sep. 21, 1999
5501576 Static efficiency enhancer for axial fans Mar. 26, 1996
5490764 Unshrouded blading for high bypass turbofan engines Feb. 13, 1996
5462408 Blade made of thermoplastic composite, in particular for ducted tail rotor of a helicopter, and its method of manufacture Oct. 31, 1995
5454693 Blade made of thermoplastic composite, in particular for ducted tail rotor of a helicopter, and its method of manufacture with injection step Oct. 3, 1995
5443365 Fan blade for blade-out protection Aug. 22, 1995
5435694 Stress relieving mount for an axial blade Jul. 25, 1995
5173023 Wind turbine generator blade and retention system Dec. 22, 1992
5118257 Boot attachment for composite turbine blade, turbine blade and method of making turbine blade Jun. 2, 1992
5118256 Blade retention apparatus with elastomeric preload Jun. 2, 1992
5096384 Plastic fan blade for industrial cooling towers and method of making same Mar. 17, 1992
5039278 Power turbine ventilation system Aug. 13, 1991
4990205 Process for manufacturing a blade Feb. 5, 1991
4976587 Composite wind turbine rotor blade and method for making same Dec. 11, 1990
4834616 Means and method for securing a composite rotor blade May. 30, 1989
4832569 Governed vane wind turbine May. 23, 1989
4778344 Variable pitch mechanisms Oct. 18, 1988
4732538 Blade hub air scoop Mar. 22, 1988
4728263 Wind turbine blade construction Mar. 1, 1988
4643647 Rotor aerofoil blade containment Feb. 17, 1987
4642028 Cuffed aircraft propeller Feb. 10, 1987
4610600 Adjustable-pitch axial fan wheel Sep. 9, 1986
4592701 Rotor blade, especially for a rotary wing aircraft Jun. 3, 1986
4580944 Aerodynamic flexible fairing Apr. 8, 1986
4524499 Method of fabricating an aircraft propeller assembly with composite blades Jun. 25, 1985
4482298 Weedless propeller Nov. 13, 1984
4456382 Agitator hub Jun. 26, 1984
4419053 Propeller spinner Dec. 6, 1983
4412784 Monocoque type rotor blade Nov. 1, 1983
4345877 Axial flow fans and blades therefor Aug. 24, 1982
D265502 Ceiling fan Jul. 20, 1982
4275993 Composite fan blade assembly Jun. 30, 1981
4110056 Fibre reinforced plastics structure Aug. 29, 1978
4019832 Platform for a turbomachinery blade Apr. 26, 1977

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