Issued Patents All Time
Showing 1–25 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12404018 | Mast dampener for a rotorcraft | Jeffrey R. Lewis, M. Keith Robinson | 2025-09-02 |
| 11713113 | Compound rotorcraft with propeller | Jeffrey R. Lewis, Martin Peryea | 2023-08-01 |
| 11174016 | Compound rotorcraft with propeller | Jeffrey R. Lewis, Martin Peryea | 2021-11-16 |
| 8739679 | Apparatus to eliminate back drive in push pull system of rotor aircraft and related methods | M. Keith Robinson, Jeffrey R. Lewis | 2014-06-03 |
| 7677492 | Automatic mechanical control of rotor blade collective pitch | Jeffrey R. Lewis | 2010-03-16 |
| 7510377 | Rotor aircraft tilting hub with reduced drag rotor head and mast | M. Keith Robinson, George D. Mitchell, Jr. | 2009-03-31 |
| 7490792 | Aircraft with rotor vibration isolation | — | 2009-02-17 |
| 7448571 | Rotor collective pitch VS Mu to control flapping and mast/rotor tilt to control rotor RPM | Jeffrey R. Lewis | 2008-11-11 |
| 7137591 | Tilting mast in a rotorcraft | George D. Mitchell, Jr. | 2006-11-21 |
| 6986642 | Extreme mu rotor | — | 2006-01-17 |
| 6827509 | CD transporter with re-transfer printer | David J. Suden, William Vangen, Hiroshi Takahashi, Takashi Onozato, Tadami Kikuchi +2 more | 2004-12-07 |
| 6527515 | Rotor for rotary wing aircraft | — | 2003-03-04 |
| 6524068 | Variable pitch aircraft propeller control with two-speed transmission | — | 2003-02-25 |
| 6513752 | Hovering gyro aircraft | — | 2003-02-04 |
| 6474598 | Landing gear shock absorber with variable viscosity fluid | — | 2002-11-05 |
| 6435453 | High speed rotor aircraft | — | 2002-08-20 |
| 6405980 | Control system for rotor aircraft | — | 2002-06-18 |
| 6155784 | Variable pitch aircraft propeller | — | 2000-12-05 |
| 6077041 | Reduction drive and torque-limiting clutch for autogyro aircraft | — | 2000-06-20 |
| 6024325 | Rotor for rotary wing aircraft | — | 2000-02-15 |
| 5997250 | Method and apparatus for controlling pitch of an aircraft propeller | Adrian P. K. Nye | 1999-12-07 |
| 5944283 | Crashworthy landing gear shock | — | 1999-08-31 |
| 5868355 | Fuselage door for pressurized aircraft | — | 1999-02-09 |
| 5865399 | Tail Boom for aircraft | — | 1999-02-02 |
| 5853145 | Rotor head for rotary wing aircraft | — | 1998-12-29 |