Boring or penetrating the earth – Boring without earth removal – Combined with earth removal
Patent
1997-07-22
1999-08-17
Bagnell, David J.
Boring or penetrating the earth
Boring without earth removal
Combined with earth removal
7386444, 172 22, F21B 4902, G01N 108
Patent
active
059379537
ABSTRACT:
A soil-sampling tool extends along a longitudinal axis and includes a barrel having a soil-penetrating distal end, and a cap for closing the end. In the improvement, the barrel has a seal surface spaced from the end and also has a tapered lead portion between the surface and the end. The lateral dimension of the lead portion is less than that of the seal surface. The cap includes an abutment face and a seal spaced therefrom. The barrel seal surface is spaced from the barrel end by a dimension not greater than that between the cap seal and its abutment face. In a highly preferred embodiment, the barrel has a stop shoulder between the barrel seal surface and the barrel end. The cap includes a lip bearing against the stop shoulder and a tapered cap face substantially contacting the barrel face of the tapered lead portion. The tool also relates to a new method.
REFERENCES:
patent: 3326049 (1967-06-01), Eley
patent: 3444938 (1969-05-01), Ballmann
patent: 3497018 (1970-02-01), Shulz et al.
patent: 4989678 (1991-02-01), Thompson
patent: 5186263 (1993-02-01), Kejr
patent: 5343771 (1994-09-01), Turriff et al.
patent: 5517868 (1996-05-01), Turriff et al.
Jacobs Lloyd E.
Melberg Nils K.
Reitmeyer Christopher A.
Turriff David E.
Bagnell David J.
En Novative Technologies, Inc.
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