US3962915A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of positioning apparatuses for measuring soil conditions
Assignee: Government of France
•
Filing: 1975-02-21
•
Granted: 1976-06-15
•
Expires: 1995-02-21
Abstract
Abstract Apparatuses for measuring soil conditions are positioned using a thin probe tube of substantially constant cross-section inserted in the ground by self-drilling in such manner as to maintain the soil outside the probe in continual contact with said probe throughout the period of measuring and measuring the various physical characteristics of the soil by means of apparatuses associated with the said probe, the drilling waste being removed upwardly of the measuring zone.
Inventors
- 👤 Jean-Francois Jezequel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:18
CPC Classifications
E; E02; E02D; E02D1/00; E21; E21B; E21B49/00; E21B49/006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
183 words
A method for positioning apparatuses for measuring ground conditions below the surface thereof comprising mounting a plurality of measuring apparatuses on a cylindrical probe tube so that said measuring apparatuses form an intermediate portion of the cylindrical wall thereof while maintaining a longitudinal central opening therein for fixedly receiving a second guide tube in spaced relation in the central opening, said probe tube having fragmentation means at the bottom of and coextensive with the cylindrical wall thereof, the lower end of said second tube being above the bottom end of said probe tube, driving the cylindrical probe tube vertically into the ground until the measuring apparatuses are embedded therein by pressure on the second tube, passing an injection fluid downwardly through said second tube to entrain fragmented ground matter at the bottom thereof and passing the fluid with entrained matter upwardly in the space between said second tube and said probe tube, whereby appropriate measurements can be taken in the undisturbed ground surrounding said probe tube which remains in contact with the outer wall of said cylindrical probe tube and said measuring apparatuses.
Claim 2
Independent Claim
183 words
A method for positioning apparatuses for measuring ground conditions below the surface thereof comprising mounting a plurality of measuring apparatuses on a cylindrical probe tube so that said measuring apparatuses form an intermediate portion of the cylindrical wall thereof while maintaining a longitudinal central opening therein for fixedly receiving a second guide tube in spaced relation in the central opening, said probe tube having fragmentation means at the bottom of and coextensive with the cylindrical wall thereof, the lower end of said second tube being above the bottom end of said probe tube, driving the cylindrical probe tube vertically into the ground until the measuring apparatuses are embedded therein by pressure on the second tube, passing an injection fluid downwardly through said second tube to entrain fragmented ground matter at the bottom thereof and passing the fluid with entrained matter upwardly in the space between said second tube and said probe tube, whereby appropriate measurements can be taken in the undisturbed ground surrounding said probe tube which remains in contact with the outer wall of said cylindrical probe tube and said measuring apparatuses.
References Cited (Backward Citations)
US3500678A
Cited
US3774718A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-06-15 | 1979-12-15 | 1980-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-15 | 1983-12-15 | 1984-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-15 | 1987-12-15 | 1988-06-15 | $7700.00 | Window Closed / Lapsed |