US3908387A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for solidifying and improving fragile ground
Assignee: Fudo Tetra Corp
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Filing: 1973-11-27
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Granted: 1975-09-30
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Expires: 1993-11-27
Abstract
Abstract An apparatus for solidifying and improving moist, soft, clayey and/or industrially polluted soils to make them available for land construction works. The apparatus is divided into groundtype equipment and underground-type equipment, each type of equipment comprises a sucking unit for absorbing the soils, a mixing unit for mixing the soils with stabilizer, and a pressure feeding unit for pressure feeding the mixture of soils and stabilizer to the desired location. The apparatus is characterized by the incorporation of a non-motorized pipeline mixer into the mixing unit and a powerful pump capable of transferring highly viscous material or clay with a high water content.
Inventors
- 👤 Masakuni Nakamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:21
CPC Classifications
E; E02; E02D; E02D3/00; E02D3/12
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
200 words
An apparatus for treating, improving and solidifying unimproved soils by the addition of a stabilizer to the unimproved soil, said apparatus comprising: removal means for removing the unimproved soil from its location for treatment, said removal means comprised of a suction means and a removable pipeline running from the unimproved soil location and connected to said suction means; stabilizer supply means for supplying the stabilizer necessary to treat said unimproved soil removed by said removal means; mixing means connected to said removal means and to said stabilizer supply means for mixing said unimproved soil with said stabilizer, thereby forming improved soil; pressure feeding means connected to said mixing means for returning said improved soil to below the surface of the unimproved soil from which it was drawn, said pressure feeding means comprised of a pumping means and a distributing pipeline connected to said pumping means for carrying said improved soil away from the apparatus; and a slide panel slidably mounted on said removal means where said pipeline contacts said unimproved soil for moving downwardly along said pipeline and for applying downward pressure to the unimproved soil surrounding the removal pipeline as the unimproved soil is removed by the removal means.
Claim 2
Independent Claim
200 words
An apparatus for treating, improving and solidifying unimproved soils by the addition of a stabilizer to the unimproved soil, said apparatus comprising: removal means for removing the unimproved soil from its location for treatment, said removal means comprised of a suction means and a removable pipeline running from the unimproved soil location and connected to said suction means; stabilizer supply means for supplying the stabilizer necessary to treat said unimproved soil removed by said removal means; mixing means connected to said removal means and to said stabilizer supply means for mixing said unimproved soil with said stabilizer, thereby forming improved soil; pressure feeding means connected to said mixing means for returning said improved soil to below the surface of the unimproved soil from which it was drawn, said pressure feeding means comprised of a pumping means and a distributing pipeline connected to said pumping means for carrying said improved soil away from the apparatus; and a slide panel slidably mounted on said removal means where said pipeline contacts said unimproved soil for moving downwardly along said pipeline and for applying downward pressure to the unimproved soil surrounding the removal pipeline as the unimproved soil is removed by the removal means.
Claim 3
Dependent Claim
15 words
An apparatus as claimed in claim 1, wherein said mixing means comprises a pipeline mixer.
Claim 4
Dependent Claim
37 words
An apparatus as claimed in claim 2 wherein forming means are attached to said distribution pipeline for forming the improved soil into pile-like formations when said improved soil is returned below the surface of the unimproved soil.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-29 | 1979-03-31 | 1979-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-29 | 1983-03-31 | 1983-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-29 | 1987-03-31 | 1987-09-30 | $7700.00 | Window Closed / Lapsed |