DF

Donald L. Ferris

RTX (Raytheon): 18 patents #503 of 15,912Top 4%
UA US Army: 1 patents #2,720 of 6,974Top 40%
UF US Air Force: 1 patents #6,190 of 16,312Top 40%
Overall (All Time): #226,739 of 4,157,543Top 6%
20
Patents All Time

Issued Patents All Time

Showing 1–20 of 20 patents

Patent #TitleCo-InventorsDate
4874292 Apparatus for damping helicopter rotor blade oscillations David G. Matuska 1989-10-17
4804315 Composite helicopter swashplate Francis E. Byrnes, Lawrence Varholak 1989-02-14
4797064 Composite helicopter rotor hub Francis E. Byrnes 1989-01-10
4714450 Elastomeric high torque, constant velocity joint Francis E. Byrnes, Edward S. Hibyan, William L. Noehren, Peter C. Ogle 1987-12-22
4688993 Tangential link swashplate centering member Johnny P. Gendreau, Alexander Korzun 1987-08-25
4676669 Tailoring tilt in an elastomeric high torque, constant velocity joint Francis E. Byrnes, Eric G. Olsen 1987-06-30
4668115 Helicopter rotor spindle retention assembly Herbert Heise 1987-05-26
4645423 Tension/compression rod arrangement for damping helicopter rotor blade oscillations David G. Matuska 1987-02-24
4588355 Flexible swashplate centering member Michael J. Marchitto 1986-05-13
4575358 Accommodating axial load in an elastomeric high torque, constant velocity joint 1986-03-11
4569629 Helicopter gimbal rotor Charles F. Niebanck, Thomas Campbell, Eric G. Olsen 1986-02-11
4439106 Rotor blade shaft integrity monitoring system Elliot F. Olster, Michael J. Marchitto 1984-03-27
4373862 Rotor blade shaft integrity monitoring system Peter C. Ogle 1983-02-15
4368006 Droop stop for fully articulated rotor Robert C. Rybicki 1983-01-11
4299538 Cross beam rotor Peter C. Ogle 1981-11-10
4284387 Blade fold restraint system 1981-08-18
RE30713 Cross beam rotor Timothy A. Krauss 1981-08-18
4244677 Cross-beam helicopter rotor with readily replaceable snubber William L. Noehren, Peter C. Ogle 1981-01-13
4242047 Adjustable bearing centering means for helicopter rotor elastomeric bearings Peter C. Ogle 1980-12-30
4235570 Elastomeric helicopter rotor load reaction system Edward S. Hibyan, Robert L. Faiz 1980-11-25