Patent ID: 6505693
Filing Date: 2003-01-14
Classification: E02D,E21B

Abstract:
An apparatus for taking a soil sample comprising a drill pipe, a first driving gear for introducing the drill pipe into the soil, a sampling device comprising a sampling bush which movably fits into the drill pipe, and a hammer device, wherein the hammer device is movable in the drill pipe, and wherein on top of the sampling bush an anvil is provided whereby the hammer device is of the liquid-driven kind and serves as a second driving gear for introducing the sampling bush into the soil, characterized in that the hammer device is provided with an internally extending sealable feed-through channel which is opened when a hammer element movable in the hammer device is resting on the anvil, and closed when movable hammer element is at a distal position in relation to the anvil, and the hammer device is externally provided with a sealing member working together with the inside of the drill pipe, and the drill pipe can be sealed at its top.