Vibration warning device including mercury wetted reed gauge switches
US5415026A · kind A · utility
76Cited by
7References
3Claims
0Family size
Inventor
Key dates
| Filing date | Feb 14, 1994 |
| Grant date | May 16, 1995 |
| Priority date | — |
| Expiry date | Feb 14, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H1/08
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An improved vibration warning device is disclosed for monitoring rotating machinery, and signaling the occurrence of an unsafe condition. The apparatus includes a one or more mercury wetted resonating reed gauge switches tuned to a critical frequency that lies within a predetermined range of the critical frequency of the rotor. An imbalance force imposed by the rotor is transmitted to the device and if the imbalance force exceeds a predetermined threshold, the mercury wetted reed gauge switch/switches will conduct an appropriate electrical warning signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.