Fluid reaction surfaces (i.e. – impellers) – Articulated – resiliently mounted or self-shifting impeller... – Plural articulation
Patent
1974-05-13
1976-03-09
Powell, Jr., Everette A.
Fluid reaction surfaces (i.e., impellers)
Articulated, resiliently mounted or self-shifting impeller...
Plural articulation
416135, B64C 2748
Patent
active
039429105
ABSTRACT:
A grip-yoke assembly for attaching a helicopter blade to the mast of the helicopter rotor having a conventional primary coupling to carry the centrifugal loads and a redundant path operative should the primary coupling fail to insure continued operability of the blade. In one embodiment, the redundant load path has a bearing surface formed on the inboard end of the grip and a corresponding thrust bearing mounted on an inboard yoke fitting for engagement with the bearing surface upon failure of the coupling. In an alternative embodiment, a bearing surface is formed on an outboard grip fitting and a corresponding thrust bearing is supported on the yoke outboard of the grip fitting.
REFERENCES:
patent: 3111172 (1963-11-01), Gorndt et al.
patent: 3280918 (1966-10-01), Drees et al.
patent: 3292712 (1966-12-01), Schmidt
patent: 3556673 (1971-01-01), Killian
patent: 3695779 (1972-10-01), Kastan et al.
patent: 3700352 (1972-10-01), Gorndt
patent: 3761199 (1973-09-01), Ferris et al.
patent: 3790302 (1974-02-01), Pascher
patent: 3807896 (1974-04-01), Johnson
Covington Cecil E.
Snyder David E.
Powell Jr. Everette A.
Textron Inc.
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