Patent ID: 8881609
Filing Date: 2014-11-11
Classification: E21B,G01N

Abstract:
1. A percussive driving apparatus for an environmental sampling or test device, the driving apparatus comprising: a percussion stem defining a central longitudinal cavity; an exit element connected to the percussion stem which defines an exit port through which tubing used in the device can exit said stem; a percussion plunger having a longitudinal bore through which the percussion stem is received, the percussion plunger being slidable along a length of the percussion stem; a lift element to permit lifting of the percussion plunger along at least a portion of said length of the percussion stem; a percussion pad affixed to the percussion stem at or near a first end thereof and configured to receive percussive driving force from the percussion plunger; and an attachment element to connect the apparatus to means for raising and lowering the apparatus when in use; wherein the percussion stem is adapted at the first end to connect to a probe for environmental sampling or testing.