Fradenburgh; Evan A.

Patent Applications and Registrations

Patent applications and USPTO patent grants for Fradenburgh; Evan A..The latest application filed is for "rotor system having alternating length rotor blades and positioning means therefor for reducing blade-vortex interaction (bvi) noise".

Company Profile

0.12.0

Fradenburgh; Evan A. - New London NH
Fradenburgh; Evan A. - Fairfield CT

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Rotor system having alternating length rotor blades and positioning means therefor for reducing blade-vortex interaction (BVI) noise Grant 5,735,670 - Moffitt , et al. April 7, 1	1998-04-07
Variable diameter rotor having an offset twist Grant 5,253,979 - Fradenburgh , et al. October 19, 1	1993-10-19
Adjustment means for helicopter rotor blade viscous damper Grant 5,116,201 - Fradenburgh , et al. May 26, 1	1992-05-26
High density fiber optic damage detection system Grant 5,015,842 - Fradenburgh , et al. May 14, 1	1991-05-14
Helicopter main rotor blade having a short span slot near the tip end Grant 4,655,685 - Fradenburgh April 7, 1	1987-04-07
Gust detection system Grant 4,652,122 - Zincone , et al. March 24, 1	1987-03-24
Method of forming a fiber reinforced composite article of a complex configuration Grant 4,591,400 - Fradenburgh , et al. May 27, 1	1986-05-27
Helicopter blade with a tip having a selected combination of sweep, taper and anhedral to improve hover efficiency Grant 4,324,530 - Fradenburgh , et al. April 13, 1	1982-04-13
Helicopter blade Grant 4,248,572 - Fradenburgh February 3, 1	1981-02-03
Helicopter Grant 4,216,924 - Fradenburgh August 12, 1	1980-08-12
Mechanism for synchronously varying diameter of a plurality of rotors and for limiting the diameters thereof Grant 4,142,697 - Fradenburgh March 6, 1	1979-03-06
Aerodynamic Blade With High Stiffness-to-weight Ratio Grant 3,713,751 - Fradenburgh , et al. January 30, 1	1973-01-30

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