Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5478204 | Ducted fan and pitch controls for tail rotor of rotary wing aircraft | Francis H. McArdle | 1995-12-26 |
| 5415525 | Ducted tail rotor providing torque reaction and yaw attitude control | Francis H. McArdle | 1995-05-16 |
| 5297934 | Compensation for kinematic foreshortening effect in pitch control system for rotary wing aircraft | — | 1994-03-29 |
| 5042967 | Drive shaft and rotor hub for helicopter flexible rotor system | — | 1991-08-27 |
| 4877375 | Drive shaft and rotor hub for helicopter flexible rotor system | — | 1989-10-31 |
| 4403681 | Three directional vibration isolator | — | 1983-09-13 |
| 4372431 | Six axis vibration isolation system | — | 1983-02-08 |
| 4349317 | Bearingless rotor for single and tandem helicopters | — | 1982-09-14 |
| 4311213 | Vibration isolation system | Vladimir Sankewitsch | 1982-01-19 |