Patent US3998065A successfully refreshed from Google Patents.
US3998065A
Expired / Lapsed
US
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Horizontal wellpointing method and apparatus
Assignee: Slurry Systems Inc
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Filing: 1975-10-09
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Granted: 1976-12-21
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Expires: 1995-10-09
Abstract
Abstract A horizontal wellpointing system is provided wherein a trenching vehicle digs a trench while perforated flexible pipe having a filter material is placed along the trench. The pipe is covered as the trench is refilled and a subsequent evacuating pressure is applied to the pipe by an above ground pump.
Inventors
- 👤 James K. Darnell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:47
CPC Classifications
F; F16; F16L; F16L1/00; F16L1/024; F16L1/028; F16L1/032; E; E02; E02F; E02F5/00; E02F5/02; E02F5/10; E02F5/102; E02F5/12
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
155 words
In a vehicle having a mechanically driven trencher at one end thereof, a system for laying a flexible perforated pipe in the trench created by said trencher comprising a first rigid conduit mounted on said vehicle having its axis extending substantially in the direction of movement of said vehicle; a second rigid conduit mounted adjacent said trencher with one end thereof terminating at the bottom of said trencher; both of said conduits being of a dimension to accept said flexible pipe, said first and second conduits being separated; tubular filter fabric freely positioned about said first rigid conduit; means for securing one end of said tubular filter fabric about the forward end of said pipe as it passes between said first and second rigid conduits; and means for guiding said pipe and said fabric into and through said second conduit, whereby said pipe covered with said fabric is placed in said trench behind said trencher.
Claim 2
Dependent Claim
155 words
In a vehicle having a mechanically driven trencher at one end thereof, a system for laying a flexible perforated pipe in the trench created by said trencher comprising a first rigid conduit mounted on said vehicle having its axis extending substantially in the direction of movement of said vehicle; a second rigid conduit mounted adjacent said trencher with one end thereof terminating at the bottom of said trencher; both of said conduits being of a dimension to accept said flexible pipe, said first and second conduits being separated; tubular filter fabric freely positioned about said first rigid conduit; means for securing one end of said tubular filter fabric about the forward end of said pipe as it passes between said first and second rigid conduits; and means for guiding said pipe and said fabric into and through said second conduit, whereby said pipe covered with said fabric is placed in said trench behind said trencher.
Claim 3
Dependent Claim
25 words
The system of claim 1 further comprising pump means connected to said forward end of said pipe for applying an evacuating pressure to said pipe.
Claim 4
Dependent Claim
45 words
The system of claim 2 wherein said pump means comprises a section of non-perforated pipe coupled at one end to said forward end of perforated pipe and extending above ground; and a power driven suction pump coupled to the other end of said non-perforated pipe.
Claim 5
Dependent Claim
18 words
The system of claim 1 further comprising cap means secured to the other end of said perforated pipe.
Claim 6
Dependent Claim
30 words
The system of claim 1 wherein said means for guiding said pipe comprises a rotatable wheel including side rails secured to said vehicle between said first and second rigid conduits.
Claim 7
Independent Claim
55 words
A system for providing horizontal wellpointing comprising means for digging a trench at a selected ground site; a flexible perforated pipe having a filter means about its periphery; means for laying said pipe in said trench; means for covering said pipe and refilling said trench; and means for apply an evacuating pressure to said pipe.
Claim 8
Independent Claim
55 words
A system for providing horizontal wellpointing comprising means for digging a trench at a selected ground site; a flexible perforated pipe having a filter means about its periphery; means for laying said pipe in said trench; means for covering said pipe and refilling said trench; and means for apply an evacuating pressure to said pipe.
Claim 9
Dependent Claim
34 words
The system of claim 6 wherein said means for applying an evacuating pressure comprises a cap for sealing one end of said pipe; and a pump connected to the other end of said pipe.
Claim 10
Independent Claim
47 words
A method for providing horizontal wellpointing which comprises digging a trench at a selected ground site; laying a flexible perforated pipe having a filter means about its periphery horizontally in said trench; covering said pipe and refilling said trench; and applying an evacuating pressure to said pipe.
Claim 11
Independent Claim
47 words
A method for providing horizontal wellpointing which comprises digging a trench at a selected ground site; laying a flexible perforated pipe having a filter means about its periphery horizontally in said trench; covering said pipe and refilling said trench; and applying an evacuating pressure to said pipe.
Claim 12
Independent Claim
90 words
A method for providing horizontal wellpointing which comprises the steps of digging a ground trench to a predetermined depth; feeding a flexible perforated pipe into said trench as said trench is being dug; enclosing said perforated pipe with a filter material during said feeding step and before said pipe enters said trench; connecting one end of said pipe to an evacuating pump by means of a non perforated pipe; sealing the other end of said pipe; and covering said pipe with the soil removed during the digging of said trench.
Claim 13
Independent Claim
90 words
A method for providing horizontal wellpointing which comprises the steps of digging a ground trench to a predetermined depth; feeding a flexible perforated pipe into said trench as said trench is being dug; enclosing said perforated pipe with a filter material during said feeding step and before said pipe enters said trench; connecting one end of said pipe to an evacuating pump by means of a non perforated pipe; sealing the other end of said pipe; and covering said pipe with the soil removed during the digging of said trench.
Claim 14
Dependent Claim
43 words
The method of claim 9 further comprising the steps of securing one end of said filter material between said perforated pipe and said non perforated pipe, and securing the other end of said filter material to the other end of said perforated pipe.
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) | 1979-12-21 | 1980-06-21 | 1980-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-12-21 | 1984-06-21 | 1984-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-12-21 | 1988-06-21 | 1988-12-21 | $7700.00 | Window Closed / Lapsed |