US3590589A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for burying pipelines
Assignee: IHC Holland NV
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Filing: 1969-06-16
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Granted: 1971-07-06
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Expires: 1989-06-16
Abstract
Abstract Apparatus for burying pipelines combines a suction dredge for sand with an endless digger for clay. When the digger is used, the sand dredge is somewhat raised to remove the clay and also an auxiliary suction dredge is used for cleaning the digger, as well as a device for bevelling the edge of the dug trench so that the pipeline will settle into it.
Inventors
- 👤 August Hendrik Maria Smulders
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:37
CPC Classifications
E; E02; E02F; E02F5/00; E02F5/02; E02F5/10; E02F5/104; E02F5/108; E02F5/06; E02F5/105; E02F5/109; F; F16; F16L; F16L1/00; F16L1/024; F16L1/028; F16L1/032
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
109 words
In an apparatus for burying a pipeline in the bottom of a body of water, comprising a suction pipe for digging a trench subject to the pipeline and means for moving the suction pipe along the pipeline; the improvement comprising a digger including an endless member that circulates in an upright plane and that has digging elements thereon for penetrating coherent soil formation, means mounting the digger on the apparatus for vertical movement relative to the apparatus and relative to the suction pipe in advance of the suction pipe, and an auxiliary suction pipe in advance of the path of the digger to remove material excavated by the digger.
Claim 2
Dependent Claim
109 words
In an apparatus for burying a pipeline in the bottom of a body of water, comprising a suction pipe for digging a trench subject to the pipeline and means for moving the suction pipe along the pipeline; the improvement comprising a digger including an endless member that circulates in an upright plane and that has digging elements thereon for penetrating coherent soil formation, means mounting the digger on the apparatus for vertical movement relative to the apparatus and relative to the suction pipe in advance of the suction pipe, and an auxiliary suction pipe in advance of the path of the digger to remove material excavated by the digger.
Claim 3
Dependent Claim
26 words
Apparatus as claimed in claim 1, and means mounting the first-named suction pipe on the apparatus for vertical movement relative to and independently of the digger.
Claim 4
Dependent Claim
32 words
Apparatus as claimed in claim 1, said first-named suction pipe being positionable in the trench cut by the digger behind the digger with respect to the direction of movement of the apparatus.
Claim 5
Dependent Claim
33 words
Apparatus as claimed in claim 3, and bevelling means for bevelling an edge of the trench cut by the digger, said bevelling means being disposed between the digger and the first-mentioned suction pipe.
Claim 6
Dependent Claim
22 words
Apparatus as claimed in claim 4, said bevelling means comprising lances for cutting the sidewall of the trench with jets of water.
Claim 7
Dependent Claim
27 words
Apparatus as claimed in claim 1, and means mounting said first-mentioned suction pipe for vertical movement between positions above and below the lowermost portion of the digger.
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) | 1974-07-05 | 1975-01-04 | 1975-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-05 | 1979-01-04 | 1979-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-05 | 1983-01-04 | 1983-07-06 | $7700.00 | Window Closed / Lapsed |