Patent US3971579A successfully refreshed from Google Patents.
US3971579A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Weld clamp seal
Assignee: Individual
•
Filing: 1969-05-05
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Granted: 1976-07-27
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Expires: 1989-05-05
Abstract
Abstract A tubular device containing a flexible sealing means for temporarily or permanently sealing a severed or broken pipe which contains fluids under extremely high pressure. The tubular device is first attached around and the flexible sealing means is tightened by threads upon two halves of the tubular device and is held in place temporarily by set screws. If it is to form a permanent repair, the device may be held in place by welding the device to the pipe.
Inventors
- 👤 William A. Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:33
CPC Classifications
F; F16; F16L; F16L55/00; F16L55/16; F16L55/168; F16L19/00; F16L19/06; F16L19/075
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
205 words
A weld clamp for sealing off any leakage of fluid contained in a metal pipeline when same is severed with ragged end faces comprising: a. a stationary sleeve adapted to be telescoped over a first end portion of said pipeline and extend over a second end portion of said pipeline where same was severed, b. a plurality of set screws extending through said stationary sleeve for securely connecting it to the first end portion, c. a radial right angled shoulder in the stationary sleeve, d. internal threads in the stationary sleeve, e. a compression sleeve having a radial right angled end face adapted to be telescoped over the second end portion of said pipeline, f. a plurality of setscrews extending through said compression sleeve for securing it to the second end portion, g. external threads on the compression sleeve screwed into the internal threads of the stationary sleeve, and h. a compressible ring in the stationary sleeve extending from the radial right angled shoulder in the stationary sleeve to the radial right angled end face of the compression sleeve and adapted to compress upon both the first end portion and the second end portion of said severed pipeline to form a fluid seal with each.
Claim 2
Dependent Claim
205 words
A weld clamp for sealing off any leakage of fluid contained in a metal pipeline when same is severed with ragged end faces comprising: a. a stationary sleeve adapted to be telescoped over a first end portion of said pipeline and extend over a second end portion of said pipeline where same was severed, b. a plurality of set screws extending through said stationary sleeve for securely connecting it to the first end portion, c. a radial right angled shoulder in the stationary sleeve, d. internal threads in the stationary sleeve, e. a compression sleeve having a radial right angled end face adapted to be telescoped over the second end portion of said pipeline, f. a plurality of setscrews extending through said compression sleeve for securing it to the second end portion, g. external threads on the compression sleeve screwed into the internal threads of the stationary sleeve, and h. a compressible ring in the stationary sleeve extending from the radial right angled shoulder in the stationary sleeve to the radial right angled end face of the compression sleeve and adapted to compress upon both the first end portion and the second end portion of said severed pipeline to form a fluid seal with each.
Claim 3
Dependent Claim
27 words
The invention as defined in claim 1 with an additional limitation of: j. a compression ring between the end of the compression sleeve and the compressible ring.
Claim 4
Dependent Claim
43 words
The invention as defined in claim 1 wherein j. said clamp is on a pipeline severed with irregular ends and k. said stationary sleeve is welded to said first end portion and m. said compression sleeve is welded to said second end portion.
Claim 5
Dependent Claim
27 words
The invention as defined in claim 3 with an additional limitation of: n. a compression ring between the end of the compression sleeve and the compressible ring.
Claim 6
Dependent Claim
19 words
The invention as defined in claim 4 wherein the compressible ring is compressed upon both ends of the pipeline.
References Cited (Backward Citations)
US618587A
Cited
CA512624A
Cited
US822530A
Cited
US1494693A
Cited
US1794905A
Cited
DE862532C
Cited
GB820113A
Cited
US3488072A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-07-27 | 1980-01-26 | 1980-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-27 | 1984-01-26 | 1984-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-27 | 1988-01-26 | 1988-07-27 | $7700.00 | Window Closed / Lapsed |