US3603097A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of making underground structures for underdraining and shielding purposes
Assignee: PRZED SPECJALISTYCZNE GORNICTW
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Filing: 1969-01-15
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Granted: 1971-09-07
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Expires: 1989-01-15
Abstract
Abstract A trench dam is made by an apparatus which digs a trench in a water-permeable ground layer, then lays a perforated drainage conduit in this trench, partially fills the trench over the conduit with gravel to form a porous gravel bed, and then fills the trench over the bed with a mixture of the excavated earth and a binder to form a waterproof wall. This operation is carried out under a silt-water suspension to prevent collapse of the trench walls which are undercut by milling wheels on the lower end of the cutter. Clear water is pumped into the conduit during these operations to drive off this silt-water suspension.
Inventors
- 👤 Bohdan Zakiewicz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:49
CPC Classifications
E; E02; E02F; E02F5/00; E02F5/02; E02F5/06; E02D; E02D17/00; E02D17/06; E02D17/13; E02D19/00; E02D19/06; E02D19/12; E02D19/16; E02D19/18; E02D5/00; E02D5/18; E02D5/187; E02F3/00; E02F3/04; E02F3/08; E02F3/10; E02F5/12
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
80 words
A method of making a trench dam comprising the steps of: forming a trench in a water-permeable ground layer below a siltwater suspension; laying a perforated drainage conduit directly on the base of said trench; partially filling said trench with gravel to form a porous gravel bed therein above said conduit; forming a waterproof wall in said trench above said bed; and forcing substantially clear water through said conduit during and after laying thereof to drive off said silt-water suspension.
Claim 2
Independent Claim
80 words
A method of making a trench dam comprising the steps of: forming a trench in a water-permeable ground layer below a siltwater suspension; laying a perforated drainage conduit directly on the base of said trench; partially filling said trench with gravel to form a porous gravel bed therein above said conduit; forming a waterproof wall in said trench above said bed; and forcing substantially clear water through said conduit during and after laying thereof to drive off said silt-water suspension.
Claim 3
Independent Claim
81 words
A method of making a trench dam comprising the steps of: forming a trench in a water-permeable ground layer; laying a perforated drainage conduit directly on the base of said trench; partially filling said trench with gravel to form a porous gravel bed therein above said conduit; forming a waterproof wall in said trench above said bed; and mixing the earth removed to form said trench with a binder, said wall being formed with the mixture of earth and said binder.
Claim 4
Independent Claim
81 words
A method of making a trench dam comprising the steps of: forming a trench in a water-permeable ground layer; laying a perforated drainage conduit directly on the base of said trench; partially filling said trench with gravel to form a porous gravel bed therein above said conduit; forming a waterproof wall in said trench above said bed; and mixing the earth removed to form said trench with a binder, said wall being formed with the mixture of earth and said binder.
Claim 5
Independent Claim
88 words
A method of making a trench dam comprising the steps of: forming a trench in a water-permeable ground layer; laying a perforated drainage conduit directly on the base of said trench; partially filling said trench with gravel to form a porous gravel bed therein above said conduit; forming a waterproof wall in said trench above said bed; and, all of said steps are carried out substantially simultaneously and jointly, said method further comprising the step of pumping water From said conduit upon the formation of said waterproof wall.
Claim 6
Independent Claim
88 words
A method of making a trench dam comprising the steps of: forming a trench in a water-permeable ground layer; laying a perforated drainage conduit directly on the base of said trench; partially filling said trench with gravel to form a porous gravel bed therein above said conduit; forming a waterproof wall in said trench above said bed; and, all of said steps are carried out substantially simultaneously and jointly, said method further comprising the step of pumping water From said conduit upon the formation of said waterproof wall.
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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) | 1974-09-06 | 1975-03-08 | 1975-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-06 | 1979-03-08 | 1979-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-06 | 1983-03-08 | 1983-09-07 | $7700.00 | Window Closed / Lapsed |