Vibration resistant flapper and nozzle
US4172464A · kind A · utility
2Cited by
3References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 12, 1977 |
| Grant date | Oct 30, 1979 |
| Priority date | — |
| Expiry date | Dec 12, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/2409
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A pneumatic control instrument includes a nozzle-flapper system having improved dynamic response characteristics under vibrational conditions. A light-mass, compliant flapper having a high natural frequency covers the nozzle and serves to cushion the impact of the nozzle striking the flapper by moving at the same amplitude of vibration as the nozzle so as to precisely track the nozzle over a wide range of vibrational frequencies and amplitudes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.