Patent US3907336A successfully refreshed from Google Patents.
US3907336A
Expired / Lapsed
US
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Pipe line with a safety equipment for transporting pumpable mediums
Assignee: HANSEN NEUERBURG EXPORT-IMPORT GmbH
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Filing: 1974-02-11
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Granted: 1975-09-23
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Expires: 1994-02-11
Abstract
Abstract A pipe line with a safety equipment for transporting pumpable mediums. The safety equipment comprises an annular chamber which circumferentially embraces a circumferential welding seam between adjacent tube sections and the welded areas on both sides of said welding seams. There is further a leakage detector connected to the circumferential chamber for detecting and indicating any medium leaking through a flaw in the welded seam into the circumferential chamber by means of an indicating device.
Inventors
- 👤 Werner Siegmund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:48
CPC Classifications
G; G01; G01M; G01M3/00; G01M3/02; G01M3/26; G01M3/28; G01M3/2807; G01M3/283; F; F16; F16L; F16L9/00; F16L9/18; F17; F17D; F17D5/00; F17D5/02; F17D5/06; F16L2201/00; F16L2201/30
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
175 words
In a pipeline having a plurality of pipe sections interconnected by welding, there being a welding seam between respective adjacent two of said sections, with a safety equipment for transporting pumpable mediums comprising a plurality of annular chambers, each circumferentially embracing but one of the circumferential welding seams between respective two adjacent tube sections and the welded areas on both sides of said welding seam, so that the interior of each said chambers includes a single welding seam; and a plurality of leakage detectors respectively connected to the circumferential chambers and disposed for immediate response to a leak particularly of or near the respectively associated seam for detecting and indicating any medium leaking through a flaw and into the respective circumferential chamber by means of an indicating device each circumferential chamber having one end adjacent to the respectively associated welding seam and extending in longitudinal direction of the pipe line up to the area of the respectively adjacent circumferential chamber, but being separated therefrom, so that the chambers are unable to communicate with each other.
Claim 2
Dependent Claim
175 words
In a pipeline having a plurality of pipe sections interconnected by welding, there being a welding seam between respective adjacent two of said sections, with a safety equipment for transporting pumpable mediums comprising a plurality of annular chambers, each circumferentially embracing but one of the circumferential welding seams between respective two adjacent tube sections and the welded areas on both sides of said welding seam, so that the interior of each said chambers includes a single welding seam; and a plurality of leakage detectors respectively connected to the circumferential chambers and disposed for immediate response to a leak particularly of or near the respectively associated seam for detecting and indicating any medium leaking through a flaw and into the respective circumferential chamber by means of an indicating device each circumferential chamber having one end adjacent to the respectively associated welding seam and extending in longitudinal direction of the pipe line up to the area of the respectively adjacent circumferential chamber, but being separated therefrom, so that the chambers are unable to communicate with each other.
Claim 3
Dependent Claim
24 words
In a pipe line as claimed in claim 1, wherein adjacent circumferential chambers (5, 5'' or 5, 5'''') overlap each other in axial direction.
Claim 4
Dependent Claim
60 words
In a pipe line as claimed in claim 1, wherein the circumferential chambers (5'', 5, 5'''') extend from one end of each pipe section near the welded area thereof to the welded area of the adjacent pipe section (2) connected to the opposite end of the aforementioned section (2'') with the welding seam (3'') being covered by the respective chamber.
Claim 5
Dependent Claim
40 words
In a pipe line as claimed in any one of claims 1, wherein a sleeve (4), which is medium-tight and which forms the annular chamber (5), is supported on the pipe inside the chamber (5) at a plurality of positions.
Claim 6
Dependent Claim
35 words
In a pipe line as claimed in claim 4, wherein the internal surface of the sleeve (4) has interconnected recesses (27) in the area of the annular chamber, said recesses constituting the annular chamber (5).
Claim 7
Dependent Claim
46 words
In a pipe line as claimed in claim 4, wherein a grating (28) supporting the sleeve (4) and providing a flow area for leaking medium in the circumferential chamber (5) is arranged in the circumferental chamber (5) between the sleeve (4) and the pipe section (2).
Claim 8
Dependent Claim
58 words
In a pipe section for building a pipe line as claimed in claim 1 wherein said section, except the end portions thereof, is provided with a sleeve (4), which is tightly connected, preferably glued to the tube section (2) in the area of one end thereof and which is open at the other end of the pipe section.
Claim 9
Dependent Claim
18 words
In a pipe line as in claim 1, the detectors respectively disposed immediately adjacent to tHe welding seams.
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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) | 1978-09-22 | 1979-03-24 | 1979-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-22 | 1983-03-24 | 1983-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-22 | 1987-03-24 | 1987-09-23 | $7700.00 | Window Closed / Lapsed |