Transmission device for a twin-rotor helicopter
US7784731B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 29, 2007 |
| Grant date | Aug 31, 2010 |
| Priority date | — |
| Expiry date | Mar 6, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64C27/14
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A transmission device includes: a transmission shaft having first and second shaft sections and a gear mounting portion; a first tube sleeved rotatably on the first shaft section, and including a tube body and an annular portion; a second tube sleeved on the second shaft section; a plurality of first planetary bevel gears mounted rotatably on the gear mounting portion; a plurality of second planetary bevel gears mounted rotatably on the annular portion; a transmission gear disposed rotatably on the tube body and meshing with the first and second planetary bevel gears; a first output bevel gear disposed rotatably on the second tube and meshing with the first planetary bevel gears; and a second output bevel gear disposed rotatably on the tube body of the first tube and meshing with the second planetary bevel gears.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.