Patent ID: 8807266
Filing Date: 2014-08-19
Classification: G01V

Abstract:
1. An apparatus for generating seismic waves, the apparatus comprising: a housing; a first shock structure removably disposed within the housing and defining a first shock cavity; a first hammer movably disposed within the first shock structure; a second shock structure removably disposed within the housing and defining a second shock cavity; a second hammer movably disposed within the second shock structure; a first pair of rails extending along a direction of movement of the first hammer within the first shock structure and being symmetrically offset from a center of the first hammer for guiding movement of the first hammer within the first shock structure, the first hammer being slidably mounted on the first pair of rails; a second pair of rails extending along a direction of movement of the second hammer within the second shock structure and being symmetrically offset from a center of the second hammer for guiding movement of the second hammer within the second shock structure, the second hammer being slidably mounted on the second pair of rails; and an actuator for inducing a striking motion in the hammers wherein the hammers each impact a strike surface as part of the striking motion, the actuator being selectively adjustable to change characteristics of the striking motion and characteristics of seismic waves generated by the impact.