Number | Name | Date | Kind |
---|---|---|---|
1596192 | Knapp | Aug 1926 | |
2630775 | Kiekhaefer | Mar 1953 | |
2728320 | Kloss | Dec 1955 | |
2959986 | Irgens et al. | Nov 1950 | |
3503360 | Hoff | Mar 1970 | |
3608684 | Shimanckas | Sep 1971 | |
3931783 | Croisant | Jan 1976 | |
4223773 | Croisant et al. | Sep 1980 | |
4258642 | Burmeister | Mar 1981 | |
4302196 | Blanchard | Nov 1981 | |
4323356 | Stephenson | Apr 1982 | |
4395240 | Blanchard | Jul 1983 |
Number | Date | Country |
---|---|---|
497635 | Dec 1919 | FRX |
1061817 | Apr 1954 | FRX |
1334551 | Jul 1963 | FRX |
146930 | May 1931 | CHX |
Entry |
---|
"Helicopter Freewheel Unit Design Guide", Sikorsky Aircraft, Div. of United Technologies Corp., N. Main St., Stratford, Conn., U.S. Army Air Mobility Research and Development Laboratories, Fort Eustis, Va., USAAMRDL-TR-77-18, Oct. 1977, pp. 14, 16, 56. |
"OMC Marine Drive Systems", Outboard Marine Corp., Waukegan, Illinois, 1981, pp. 6-7. |