Communications – electrical: acoustic wave systems and devices – Signal transducers – Receivers
Patent
1984-01-04
1986-06-24
Moskowitz, Nelson
Communications, electrical: acoustic wave systems and devices
Signal transducers
Receivers
367182, 310 15, H04R 1100
Patent
active
045970700
ABSTRACT:
An improved geophone for seismic prospecting is disclosed which features plural magnets of varying mass oscillating with varying frequencies within one or plural coils whereby the frequency response of the geophone may be optimized.
REFERENCES:
patent: 3100292 (1963-08-01), Warner, Jr. et al.
patent: 3582874 (1969-03-01), Fedoseenko et al.
patent: 3835427 (1974-09-01), Breitbach
patent: 4517514 (1985-05-01), Howell
Gilman Michael G.
Lobo Ian J.
McKillop Alexander J.
Mobil Oil Corporation
Moskowitz Nelson
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