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Class Information
Number: 416/106
Name: Fluid reaction surfaces (i.e., impellers) > Sustained ancillary movement of rotary working member (e.g., cyclic feathering, etc.) > Lead-lag type rotor blade movement > With movement restraining means (i.e., damping)
Description: Apparatus provided with means to limit the extent or reduce the frequency of blade movement about the lead-lag axis.


Sub-classes under this class:

Class Number Class Name Patents
416/107 Resilient bias or limit stop 34


Patents under this class:

Patent Number Title Of Patent Date Issued
7607892 Rotorcraft rotor with blades hinged in flap and in lag Oct. 27, 2009
6827553 Flexbeam damper assembly having transition shim clamp device Dec. 7, 2004
6676074 Dual piston drag damper for rotary-wing aircraft rotor Jan. 13, 2004
6398496 Minimizing wind forces on helicopter blades Jun. 4, 2002
6050778 Semi-articulated rotor system Apr. 18, 2000
6045328 Fluid damper including flexible damping plate Apr. 4, 2000
5636970 Device for damping the drag of the blades of a rotor Jun. 10, 1997
5628620 Main rotor system for helicopters May. 13, 1997
5407325 Rotor head for rotary wing aircraft Apr. 18, 1995
5372478 Helicopter rotor damper Dec. 13, 1994
5267833 Gyrocraft rotor hub body Dec. 7, 1993
5266005 Rotor head for rotary wing aircraft Nov. 30, 1993
5219430 Hydraulic damper and elastic-return strut comprising such a damper Jun. 15, 1993
5116209 Device of retractable stops for rotor blades of giroplanes, and rotor head including such a device May. 26, 1992
5116201 Adjustment means for helicopter rotor blade viscous damper May. 26, 1992
4808075 Helicopter rotor Feb. 28, 1989
4695226 Helicopter rotor backup damper system Sep. 22, 1987
4551067 Helicopter rotor Nov. 5, 1985
4241814 Mechanical-hydraulic damper for a load subject to shocks and vibrations Dec. 30, 1980
4084668 Redundant damper seals Apr. 18, 1978



 
 
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