Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7153094 | Rotor system vibration absorber | Michael R. Smith, Frank B. Stamps, Bryan Marshall, Cecil E. Covington | 2006-12-26 |
| 7097427 | Helicopter main rotor blade balance weight retention assembly | Norman Kuhns, Ernest Powell | 2006-08-29 |
| 6764280 | Multi-bladed tail rotor hub design for coriolis relief | Cecil E. Covington, David A. Haynie, Joseph John Zierer, Eric Boyle | 2004-07-20 |
| 6659722 | Composite rotor blade and method of manufacture | Eric Boyle, Christopher L. Finch, Robert S. Thompson, Jr. | 2003-12-09 |
| 6439849 | Dual trunnion hub-to-mast assembly | Glenn Alan Shimek | 2002-08-27 |
| D455113 | Tail rotor yoke assembly | Eric Boyle, Glen A. Shimek | 2002-04-02 |
| D453917 | Pitch change adapter for a helicopter main rotor system | — | 2002-02-26 |
| 5647726 | Rotor system vibration absorber | Cecil E. Covington, Mithat Yuce, Bryan Marshall | 1997-07-15 |
| 5358381 | Yoke for helicopter rotor systems | Cecil E. Covington, Timothy Kent Ledbetter, Ernest Powell, Madison K. Robinson, Patrick R. Tisdale | 1994-10-25 |