Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5749449 | Coil spring for overrunning spring clutches | Hugh L. Kearney, Charles J. Isabelle, Jules G. Kish | 1998-05-12 |
| 5263821 | Mid-beam jointed reconfigurable bearingless main rotor assembly | Leonard J. Doolin, Stephen V. Poulin | 1993-11-23 |
| 5149013 | Retractable helicopter rotor | Ralph D. Costanzo, Robert J. Durwin, Lee N. Hager | 1992-09-22 |
| 5110260 | Articulated helicopter rotor within an improved blade-to-hub connection | Francis E. Byrnes, Edward S. Hibyan | 1992-05-05 |
| 4898515 | External wrap of composite flexbeam | Edward A. Beno | 1990-02-06 |
| 4746272 | Lobed composite flexbeam | Edward S. Hibyan, Francis E. Byrnes | 1988-05-24 |
| 4714450 | Elastomeric high torque, constant velocity joint | Francis E. Byrnes, Donald L. Ferris, Edward S. Hibyan, Peter C. Ogle | 1987-12-22 |
| 4244677 | Cross-beam helicopter rotor with readily replaceable snubber | Donald L. Ferris, Peter C. Ogle | 1981-01-13 |