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Droop stop for fully articulated rotor
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Patent number 4,368,006
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Issue date Jan 11, 1983
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The United States of America as represented by the Secretary of the Navy
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Donald L. Ferris
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B64 - AIRCRAFT AVIATION COSMONAUTICS
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Helicopter rotor head mounting assembly
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Patent number 4,175,913
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Issue date Nov 27, 1979
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The United States of America as represented by the Secretary of the Army
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Robert C. Rybicki
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B64 - AIRCRAFT AVIATION COSMONAUTICS
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Cross beam rotor
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Patent number 4,093,400
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Issue date Jun 6, 1978
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United Technologies Corporation
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Robert Charles Rybicki
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B64 - AIRCRAFT AVIATION COSMONAUTICS
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Redundant damper seals
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Patent number 4,084,668
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Issue date Apr 18, 1978
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United Technologies Corporation
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Robert Charles Rybicki
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B64 - AIRCRAFT AVIATION COSMONAUTICS
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Two-position helicopter main rotor
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Patent number 3,972,491
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Issue date Aug 3, 1976
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United Technologies Corporation
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Donald Leroy Ferris
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B64 - AIRCRAFT AVIATION COSMONAUTICS
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