Model helicopter device
US4272041A · kind A · utility
24Cited by
1References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 1, 1978 |
| Grant date | Jun 9, 1981 |
| Priority date | — |
| Expiry date | Sep 1, 1998 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA63H27/12
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A model helicopter device wherein a countertorque generated in the helicopter body by changes in the revolution of a main rotor is canceled by substantially detecting the acceleration of the revolution of the main rotor and automatically adjusting the pitch of tail rotor blades in accordance with the detected acceleration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.