Seismic detector

Details Seismic detector Seismic detector

1984-03-09

1986-07-08

Jordan, Charles T.

Communications, electrical: acoustic wave systems and devices

Signal transducers

Receivers

367188, 181122, G01V 116, H04R 1500, H04R 1100

Patent

active

045997136

ABSTRACT:
A seismic detector comprises a casing the lower part (10) of which is provided with a plurality of apertures (19). A hydrophone transducer (70) comprising an annular ceramic member provided with metallized surfaces (71,72) is mounted in the casing and defines with the casing an enclosure (65) which houses a geophone (60). The outer face (71) of the hydrophone transducer (70) is subject to the ambient hydrostatic pressure via the apertures (19). The bottom of the casing is provided with a protuberance (11) to which a spike (12) is attached. The seismic detector can work in both hydrophonic and geophonic modes.

REFERENCES:
patent: 2740945 (1956-04-01), Howes
patent: 2846662 (1958-08-01), Sparks
patent: 3158831 (1964-11-01), Boyer
patent: 3311873 (1964-03-01), Schloss
patent: 3332057 (1965-01-01), Pavey, Jr.
patent: 3932834 (1976-01-01), Sutherland
patent: 3988620 (1976-10-01), McDavid
patent: 4092628 (1978-05-01), Hall, Jr.
patent: 4134097 (1979-01-01), Cowles
patent: 4163206 (1979-07-01), Hall, Jr.
patent: 4437175 (1984-03-01), Berni
patent: 4438292 (1984-03-01), Woodall

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