US3707847A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Installation of sand drains
Assignee: Raymond International Inc
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Filing: 1968-02-06
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Granted: 1973-01-02
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Expires: 1988-02-06
Abstract
Abstract Formation of sand drains in the earth by drilling and forcing a fluid at high velocity to wash out a hole and thereafter filling the hole by forcing filler material down through a pipe; the pipe being outfitted with special valve control means to control the flow of fluid and filler therethrough in generally inverse manner.
Inventors
- 👤 A Godley
- 👤 F Fuller
- 👤 C Houk
- 👤 H Holland
- 👤 G Gendron
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:30
CPC Classifications
E; E02; E02D; E02D3/00; E02D3/02; E02D3/10; E02D3/106
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
121 words
A method of forming a sand drain in the earth which comprises the steps of drilling a hole in the earth, introducing a fluid into said hole to substantially fill said hole, causing said fluid to flow over and wash spoil out through the top of said hole, and thereafter forcing drain solids down through a pipe in the hole to fill same up from the bottom thereof, thereby to displace said fluid out through the top of said hold, said solids being forced down into said hole by making a slurry thereof with fluid and washing same down through a pipe, the fluid velocity being maintained below that which will carry said solids up to the top of said hole.
Claim 2
Independent Claim
121 words
A method of forming a sand drain in the earth which comprises the steps of drilling a hole in the earth, introducing a fluid into said hole to substantially fill said hole, causing said fluid to flow over and wash spoil out through the top of said hole, and thereafter forcing drain solids down through a pipe in the hole to fill same up from the bottom thereof, thereby to displace said fluid out through the top of said hold, said solids being forced down into said hole by making a slurry thereof with fluid and washing same down through a pipe, the fluid velocity being maintained below that which will carry said solids up to the top of said hole.
Claim 3
Dependent Claim
23 words
A method as in claim 1 wherein said fluid is forced into said hole during said drilling to provide simultaneous drilling and washing.
Claim 4
Dependent Claim
29 words
A method as in claim 1 wherein said fluid is forced into the bottom of said hole in the form of high velocity jet sprays to effect said drilling.
Claim 5
Dependent Claim
25 words
A method as in claim 1 wherein said during said overflow at least a portion of said fluid is recovered and used for further washing.
Claim 6
Dependent Claim
44 words
A method as in claim 4 wherein said fluid is caused to pass out of the top of said hole into a settling sump where washed out spoil may settle and wherein said portion of said fluid is thereafter pumped back into said hole.
Claim 7
Dependent Claim
18 words
A method as in claim 1 wherein said fluid is forced into said hole from the bottom thereof.
Claim 8
Independent Claim
80 words
A method of forming a sand drain in the earth which comprises the steps of drilling a hole in the earth, filling said hole with water, stirring the water in the hole to suspend the drillings, rapidly forcing a large displacement element having a cross section smaller than the hole down into it, thereby to produce rapid upward movement of water from the hole to carry with it the suspended drillings, and thereafter filling the hole with sand drain solids.
Claim 9
Independent Claim
80 words
A method of forming a sand drain in the earth which comprises the steps of drilling a hole in the earth, filling said hole with water, stirring the water in the hole to suspend the drillings, rapidly forcing a large displacement element having a cross section smaller than the hole down into it, thereby to produce rapid upward movement of water from the hole to carry with it the suspended drillings, and thereafter filling the hole with sand drain solids.
Claim 10
Dependent Claim
39 words
A method as in claim 7 wherein said large displacement element is forced down the center of the hole to direct the upward flow of water along the hole surfaces, thereby to achieve a washing action along said surfaces.
Claim 11
Dependent Claim
29 words
A method as in claim 7 wherein said large displacement element is a hollow elongated tube and wherein sand drain solids are admitted to said hole via said tube.
Claim 12
Dependent Claim
59 words
A method as in claim 9 wherein said tube is provided with an openable bottom element sealed thereto with a frangible seal and wherein following admission of sand drain solids to said tube and insertion of said tube into said hole pressurized air is admitted to said tube to blow open said bottom and release said sand drain solids.
Claim 13
Dependent Claim
22 words
A method as in claim 7 wherein said drilling and stirring are achieved simultaneously by the rotation of earth cutting water jets.
Claim 14
Dependent Claim
17 words
A method as in claim 11 wherein a paddle element is rotated with rotation of said jets.
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Cited
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-02 | 1976-07-03 | 1977-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-02 | 1980-07-03 | 1981-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-02 | 1984-07-03 | 1985-01-02 | $7700.00 | Window Closed / Lapsed |