Portable core sampler

Details Portable core sampler Portable core sampler

1998-03-18

2000-08-15

Lillis, Eileen Dunn

Boring or penetrating the earth

Boring without earth removal

Combined with earth removal

175332, 175337, 175339, E21B 726, E21B 1102, E21B 1000

Patent

active

061021350

ABSTRACT:
A portable core sampler includes a portable electric drill having an output rotary shaft connected detachably to a coupler shaft that supports a water swivel which connects a source of water to an axial water delivery passageway in the coupler shaft. The passageway in the coupler shaft communicates with the water delivery passageway in an elongated core sampler tube connected detachably to the coupler shaft, either directly or through one or more spacer tubes, for simultaneous rotation with the coupler shaft. The end of the core sampler tube opposite the coupler shaft includes core cutting elements for cutting core material for collection in the core sampler tube. Water injected into the system assists the cutting elements in cleanly cutting sub-surface materials by removing heat and cuttings. An inner shoulder in the sampler tube supports a core sample in the core sample tube during retraction of the tube assembly from the sub-surface.

REFERENCES:
patent: 4534231 (1985-08-01), Jonsson et al.
patent: 4667755 (1987-05-01), Muller et al.
patent: 4907659 (1990-03-01), Ludwig
patent: 5058688 (1991-10-01), Scott et al.

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