Patent · US Expired

Method and apparatus for creating seismic waves in the earth

US3983957A · kind A · utility

9Cited by
7References
33Claims
0Family size

Inventor

Key dates

Filing dateJan 6, 1975
Grant dateOct 5, 1976
Priority date—
Expiry dateJan 6, 1995

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG01V1/09
  • WIPO fieldMeasurement
  • WIPO sectorInstruments

Abstract

A mass positioned above the earth and having downward extensions, which may include wheels, resting on the earth. One or more closed chambers having two parts vertically reciprocable with respect to each other, one part pressing on the earth, the other part fastened to the underside of the mass. Means to inject pressurized fluid into the chamber to expand the chamber and to lift the mass above the earth, and means to modulate the fluid pressure in the chamber to generate seismic waves in the earth, and means alternately to apply a subatmospheric pressure to the chamber, to collapse the chamber and lift said one part above the earth.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.