Kinemetrics, Inc.

Guillermo D Naranjo

Eric L Canuteson

A method and a seismic sensor using symmetrical spring geometry to overcome the temperature sensitivity problems associated with seismometers. The seismic sensor includes a base having a pivot point and a vertical axis. The sensor also includes a neutral axis and a carriage that is mounted to the base at the pivot point. The carriage includes a mass, a boom, a center of gravity, and a neutral position. The carriage is in the neutral position when the center of gravity of the carriage is along the neutral axis. Also included in the sensor is a spring, that is attached to the carriage. The spring suspends the carriage in the neutral position and supplies a force that impels the carriage into the neutral position. The spring being symmetrical about the neutral axis while the carriage is in the neutral position. The sensor further includes a first point and a second point for attaching the spring to the carriage and a detector. The detector is attached to the base and senses the displacement of the carriage.

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Sierra Madre, CA, United States of America

Guillermo D Naranjo