Fault detection device

Details Fault detection device Fault detection device

1978-07-14

1980-04-01

Watkins, Donald

Measuring and testing

Vibration

Resonance, frequency, or amplitude study

73649, 116200, G01H 1300

Patent

active

041955285

ABSTRACT:
A U-shaped tuning fork is fixed to a supporting block connected to a body in which a fault is to be detected. A spring loaded rod is movably supported at one end on the supporting block and extends through a spherical wedge sandwiched between two legs of the tuning fork. The tuning fork resonates at a frequency at which the detected body vibrates when a fault occurs in it. This permits the wedge and therefore the rod to move indicating the occurrence of the fault. Simultaneously a microswitch is operated to indicate electrically the existence of the fault.

REFERENCES:
patent: 2932189 (1960-04-01), Carlin
patent: 2974521 (1961-03-01), Phelps
patent: 3698351 (1972-10-01), Harrah et al.
patent: 3705516 (1972-12-01), Reis
patent: 3878858 (1975-04-01), Yamada
patent: 3903733 (1975-09-01), Murayama et al.
patent: 3979739 (1976-09-01), Birchall
patent: 4058134 (1977-11-01), Kamatsu et al.

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