Patent ID: 6148929
Filing Date: 2000-11-21
Classification: E21B,G01M

Abstract:
A manually operated, drivable and retractable feeler rod for locating fluid leaks in a ground surface, the feeler rod comprising:an elongated solid rod having a lower end portion provided with a generally pointed configuration adapted to pierce the ground surface, and an upper end portion adapted to engage a listening device thereon;an anvil fixed to the rod in the vicinity of upper end portion thereon, the anvil having an upper contact surface and a lower contact surface;an upper collar slidably mounted on the rod above the anvil and defining a driving hammer engageable with the upper contact surface of the anvil;a lower collar slidably mounted on the rod below the anvil and defining a retraction hammer engageable with the lower contact surface of the anvil;a pair of parallel guide rods extending between the upper and lower collars and passing through the anvil on opposite sides of the rod;a tubular sheath telescoped over the anvil, the upper and lower collars and the guide rods, and connected to the lower collar, anda handle extending generally transversely of the rod and having a central portion receiving the rod therethrough and connected to the sheath, and a pair of handle grip portions extending outwardly from the central portion.