Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10696386 | Rigid rotor head with tension torsion (TT) strap retention | David A. Darrow, Jr., Stephen V. Poulin, Richard Thomas Hood, Frank P. D'Anna | 2020-06-30 |
| 10336444 | Composite stiffened rigid propeller shaped main rotor hub | David A. Darrow, Jr. | 2019-07-02 |
| 9718541 | Swashplate apparatus | David A. Darrow, Jr., Stephen V. Poulin, Frank P. D'Anna | 2017-08-01 |
| 9428268 | Flexbeam hinge for helicopter blade active trailing edge flap | Kris Kopanski, Devon Cowles, David E. Bruno, Benjamin Reed Hein | 2016-08-30 |
| 7798442 | Rotor assemblies having automatic blade folding systems | Frank P. D'Anna, David N. Schmaling, Michael R. Robbins | 2010-09-21 |
| 5954480 | Vibration isolator for rotorcraft | David N. Schmaling, Albert T. Krauss, Kirk C. Frederickson | 1999-09-21 |
| 5901616 | Inertial mass for vibration isolators | David N. Schmaling, Kenneth J. Buckman | 1999-05-11 |
| 5499903 | Snubber bearing mounting assembly for bearingless rotors | David N. Schmaling, Francis E. Byrnes | 1996-03-19 |