Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12012891 | Aircraft turboprop engine inlet compact profile configuration to improve air intake efficiency and without loss of anti-icing ability | Alexlander J. Duncan, Jayme S. Bartlett, George R. Kemner | 2024-06-18 |
| 10737773 | Aircraft winglet design having a compound curve profile | — | 2020-08-11 |
| 10053209 | Aircraft winglet design having a compound curve profile | — | 2018-08-21 |
| 9120562 | Aircraft winglet design having a compound curve profile | — | 2015-09-01 |
| 5549455 | Through the hub exhaust flow improvements for marine variable pitch propeller | — | 1996-08-27 |
| 5368442 | Automatic variable discrete pitch marine propeller | — | 1994-11-29 |
| 5326223 | Automatic variable pitch marine propeller with mechanical holding means | — | 1994-07-05 |
| 5240374 | Damped automatic variable pitch marine propeller | — | 1993-08-31 |
| 5129785 | Automatic variable discrete pitch marine propeller | — | 1992-07-14 |
| 5076220 | Internal combustion engine | Hugh G. Evans | 1991-12-31 |
| 5032057 | Automatic variable pitch marine propeller | — | 1991-07-16 |
| 5012646 | Turbine engine having combustor air precooler | — | 1991-05-07 |
| 4947806 | Engine breather oil recovery system | Jan G. Norton, James D. Wilson | 1990-08-14 |
| 4929153 | Self-actuating variable pitch marine propeller | — | 1990-05-29 |
| 4483147 | Turbocharged engine having an engine speed and throttle position responsive compressor bleed valve | Hugh G. Evans, James A. Christy | 1984-11-20 |
| 4469078 | Aircraft engine-turbocharger package with bleed valve control | Hugh G. Evans, James S. Christy | 1984-09-04 |
| 4428550 | Vibration-insulating stability improving torque force device | Hugh G. Evans, James S. Christy | 1984-01-31 |
| 4424781 | Modified control linkage for supercharged inlet air to internal combustion engine | Hugh G. Evans | 1984-01-10 |
| 4399665 | Aircraft air conditioning system | Hugh G. Evans, James S. Christy, Stanley S. Lafrenz | 1983-08-23 |