Patent US3839872A successfully refreshed from Google Patents.
US3839872A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of securing a large-diameter tube to a casing underwater
Assignee: CO GENERALE D EQUIPEMENT MARIT
•
Filing: 1973-04-30
•
Granted: 1974-10-08
•
Expires: 1993-04-30
Abstract
Abstract This invention relates to a method of securing a large-diameter tube to a casing that is submerged under water e.g. in a river or the sea, and wherein one end of this casing rests on a submerged bed with one end of the tube being driven into this bed within the casing, while the other end of the tube is in free air. According to the invention, concrete is injected from the base of said casing into the annular space defined by said tube and said casing so as to drive the water therefrom. The water located within the said tube is removed after forming a concrete plug at the base of said tube, and after this concrete has set in the annular space, longitudinal openings are made in the interior of the said tube so as to expose the inner surface of said casing through the thickness of the set concrete. The edges of these openings are connected to the inner surface of said casing by means of packing-pieces arranged in the space between said casing and said tube.
Inventors
- 👤 R Loire
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:12
CPC Classifications
E; E02; E02D; E02D27/00; E02D27/32; E02D27/50; E02D25/00; E02D27/42; E02D27/52; E02D29/00; E02D29/06; E02D5/00; E02D5/22; E02D5/34; E02D5/38; E02D5/40
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
203 words
A method of securing a large-diameter tube to a casing submerged under water, one end of which casing rests on a submerged bed, one end of said tube being driven into said bed within said casing while the other end of said tube is above the water and casing in free air, thereby to define a generally annular space between the casing and tube, said method comprising the steps of, injecting concrete at the base of said casing into the annular space defined by said tube and said casing, thereby to drive water out of said space, forming a concrete plug in the base of said tube adjacent said bed, thereafter removing the water within said tube above the concrete plug after the concrete plug has been formed and, after said concrete has set in said annular space, forming a plurality of longitudinally extending openings in said tube along the portion thereof surrounded by said casing to expose the inner surface of said casing through the thickness of concrete in said annular space and, thereafter securing the edges of said openings to the inner surface of said casing with the aid of packing-pieces arranged in the space between said casing and said Tube.
Claim 2
Independent Claim
203 words
A method of securing a large-diameter tube to a casing submerged under water, one end of which casing rests on a submerged bed, one end of said tube being driven into said bed within said casing while the other end of said tube is above the water and casing in free air, thereby to define a generally annular space between the casing and tube, said method comprising the steps of, injecting concrete at the base of said casing into the annular space defined by said tube and said casing, thereby to drive water out of said space, forming a concrete plug in the base of said tube adjacent said bed, thereafter removing the water within said tube above the concrete plug after the concrete plug has been formed and, after said concrete has set in said annular space, forming a plurality of longitudinally extending openings in said tube along the portion thereof surrounded by said casing to expose the inner surface of said casing through the thickness of concrete in said annular space and, thereafter securing the edges of said openings to the inner surface of said casing with the aid of packing-pieces arranged in the space between said casing and said Tube.
Claim 3
Dependent Claim
97 words
A method according to claim 1 including, prior to said step of injecting concrete into said annular space, the steps of placing an annular elastic chamber inside the upper part of said casing before it is submerged, inflating said chamber with high-pressure air and, then filling said chamber with concrete to grasp said tube and cut off the upper part of the annular space from the surrounding water, whereby the water contained in said annular space is expelled through orifices in said casing during said injecting step, said orifices being equipped with means for retaining the concrete.
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) | 1977-10-07 | 1978-04-08 | 1978-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-07 | 1982-04-08 | 1982-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-07 | 1986-04-08 | 1986-10-08 | $7700.00 | Window Closed / Lapsed |