Vibration warning device including mercury wetted reed gauge swi

Details Vibration warning device including mercury wetted reed gauge swi Vibration warning device including mercury wetted reed gauge swi

1994-02-14

1995-05-16

Williams, Hezron E.

Measuring and testing

Vibration

Sensing apparatus

73660, 73661, G01N 2100

Patent

active

054150264

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.

REFERENCES:
patent: 2303474 (1942-12-01), Kalb
patent: 2622163 (1952-12-01), Snell
patent: 4329670 (1982-05-01), Bollen et al.
patent: 4455461 (1984-06-01), Maguire
patent: 4910502 (1990-03-01), Serveau et al.
patent: 5001933 (1991-03-01), Brand
patent: 5021618 (1991-06-01), Ubukata et al.

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