U-clip for boltless blade retainer
Ultra-thin low noise axial flow fan for office automation machin
Undercut leading edge for compressor blades and related method
Unidirectionally solidified cast article and method of making
Unitary, bonded-together helicopter rotorblade
United sail windmill
United sail windmill
Unitized quick-assembly fan
Universal constant speed variable pitch boat propeller system
Universal fan blade mount
Universal fan for fan clutch
Unshrouded blading for high bypass turbofan engines