Grip-yoke assembly with a redundant centrifugal load support
US3942910A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 13, 1974 |
| Grant date | Mar 9, 1976 |
| Priority date | — |
| Expiry date | May 13, 1994 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64C27/48
- WIPO fieldTransport
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.