Linearized controlled valves
US4327894A · kind A · utility
12Cited by
1References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 21, 1980 |
| Grant date | May 4, 1982 |
| Priority date | — |
| Expiry date | May 21, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/20558
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Servo control of a butterfly valve or the like, in which fluid flow is inherently non-linearly related to angular orientations of a vane or plug member, is effected through a function-generator mechanism interposed to render the system transfer function substantially constant. A function generator serving those purposes includes a mechanical cam-and-follower unit through which valve-controlling angular movements are maintained in a cosine-related slaving with angular movements of the rotor of an electrical servo motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.