Geophone

Details Geophone Geophone

2007-10-23

2007-10-23

Williams, Hezron (Department: 2856)

Measuring and testing

Speed, velocity, or acceleration

Acceleration determination utilizing inertial element

C073S514060, C073S654000, C367S181000

Reexamination Certificate

active

10713499

ABSTRACT:
An improved system for sensing ground motion is provided. The system generally comprises a shell and a case within the shell and connected by a suspension. The mass of the case is greater than the mass of the shell. An electrode within the shell detects relative motion between the shell and the case.

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