Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Torsional resonance frequency measuring device and method

Torsional resonance frequency measuring device and method

US Patent 8990031 · Granted Mar 24, 2015

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Hub cooling apparatus adapted to wind-power generator and method thereof2016
Windmill and hub sealing apparatus thereof2015
Blade pitch driving apparatus for wind driven generator2012
Blade pitch driving apparatus for wind driven generator2012
Vertical-axis windpower fan unit and module and power generating system thereof2012
Vertical axis wind generator structure2011
Power generating device capable of outputting at constant rotation speed2010
Hybrid power-generating device2009
Hybrid power-generating device2009
Wind turbine with self-contained power system2008
Wind turbine with self-contained power system2008
Charge equalizer or series of connected battery strings1999