Apparatus and method for testing a geophone during assembly

Details Apparatus and method for testing a geophone during assembly Apparatus and method for testing a geophone during assembly

1982-05-21

1984-05-15

Goldberg, Gerald

Measuring and testing

Instrument proving or calibrating

Volume of flow, speed of flow, volume rate of flow, or mass...

367 13, G01V 1300, G01M 1900

Patent

active

044480571

ABSTRACT:
An apparatus and method for testing a geophone during assembly is disclosed. The apparatus includes a light source cooperating with a photocell for generating a voltage signal in response to light. A member for support of the geophone to be tested is located in a defined path between the light source and the photocell for generating a voltage signal. The apparatus further includes a display unit for indicating the voltage signal generated, which is representative of the resilient characteristics of the geophone springs, characterizing the position of the geophone coil and its resonant frequency.

REFERENCES:
patent: 2882520 (1959-04-01), Hass
patent: 2971364 (1961-02-01), Gatcombe
patent: 3693400 (1972-09-01), Savit
patent: 3858169 (1974-12-01), Bardeen
patent: 3930216 (1975-12-01), Hall, Jr.
patent: 4015202 (1977-03-01), Fredriksson et al.
patent: 4296483 (1981-10-01), Haill
"An Electromechanical Transducer System for the Transient Testing of Seismographs"; 1-1953; Honnell; Geophysics, vol. 28, Issue-1, pp. 160-168.

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