Freewheel devices
US4441384A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 1, 1980 |
| Grant date | Apr 10, 1984 |
| Priority date | — |
| Expiry date | Jul 1, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/19093
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A freewheel device for connecting a power input to a selected one of a plurality of outputs so as to transmit rotary motion in one direction of rotation and to over-run when the speed of the selected one of the outputs exceeds that of the input, includes a neutral condition in which the input is rotationally disengaged from any of the outputs. In a described embodiment, the freewheel device comprises a plurality of rollers retained circumferentially adjacent one end of an axially movable shaft in operative association with a plurality of wedge-shaped portions formed on the shaft, axial movement of the shaft serving to engage the rollers between the wedge-shaped portions and, selectively axially spaced-apart internal, cylindrical surfaces formed on each of the outputs and on a rotatable support. The freewheel device finds particular application in the transmission system of multi-engined helicopters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.