Seismometers

Details Seismometers Seismometers

1979-03-14

1981-07-21

Moskowitz, Nelson

Communications, electrical: acoustic wave systems and devices

Signal transducers

Receivers

181122, 73652, G01V 118

Patent

active

042802067

ABSTRACT:
A vertical seismometer comprises a horizontal boom 2 carrying a mass 1 frictionlessly pivoted about a horizontal axis 3. The boom is supported by a pre-stressed vertically extending flat spring 4 having one end rigidly attached to the boom adjacent to and intersecting this axis so that movement of the boom applies a turning moment to the flat spring at its attachment end. A further pre-stressed flat spring 5 pivoted at right angles to the other end of the first-mentioned flat spring has its other end rigidly connected to the frame 13 of the seismometer and applies a constant force along the longitudinal axis of the latter spring towards the end attached to the boom.

REFERENCES:
patent: 1789055 (1931-01-01), Taylor
patent: 3194060 (1965-07-01), Greenwood
Usher, "Developments in Seismometry", 1973, pp. 501-507, J. Phys. E., Sci Instrum 6.
Usher et al., "A Miniature Wideband . . . Seismometer", 12/77 pp. 1253-1260, J. Phys. E, Sci. Instrum 10.
Usher et al., "The Design of . . . Seismometers", 1978, pp. 605-613, Geophys. J. R. Astr. Soc.
Uspenshiy et al., "A Miniature Long Period Seismomograph", 6/73, pp. 394-398, Phys. of the Solid Earth, #6.

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