Throttle valve for use in a gas turbine engine fuel control system
US4154425A · kind A · utility
9Cited by
8References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 17, 1976 |
| Grant date | May 15, 1979 |
| Priority date | — |
| Expiry date | Feb 17, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/19056
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A throttle valve has a control member which is angularly positioned by two stepper motors which drive the control member through differential gearing. The drives to the control member are arranged so that a single step displacement of the respective motors in the same direction drives the control member by different amounts in opposite directions, providing a high resolution drive. The control member may be driven at a high speed by reversing one of the motors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.