Patent ID: 7088251

Claim:
A mole detector, comprising: apparatus for placement over a portion of a soil surface overlaying a portion of a mole tunnel, including a sensor and circuitry for detecting movement of the portion of the soil surface indicative of passage of a mole through the underlying tunnel portion and generating a signal representative thereof; wherein the apparatus comprises a concave shell having elongate lower edge portions and an unwardly extending semi-cylindrical inner surface extending between the lower edge portions defining a space, the lower edge portions being positionable on the soil surface adjacent opposite sides of the portion of the soil surface overlaying the mole tunnel, respectively, such that the portion of the soil surface overlaying the mole tunnel is located in the space: wherein the shell includes a cavity in an upper portion of the inner cylindrical surface connecting with the space, and the sensor is located in the cavity so as to project downwardly into the space in a position over the portion of the soil so as to be contacted by upward movement thereof; and wherein the sensor includes an actuator disposed in the space and movable by contact with the upwardly moving soil to actuate a signal generator for emitting a signal indicative of the movement.