Patent US3711938A successfully refreshed from Google Patents.
US3711938A
Expired / Lapsed
US
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Method for pulling, aligning and bevelling adjacent submerged pipe sections
Assignee: Fluor Corp
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Filing: 1970-10-26
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Granted: 1973-01-23
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Expires: 1990-10-26
Abstract
Abstract This invention provides a method for pulling, aligning and bevelling the end portions of submerged pipe sections prior to welding them together. he two pipe sections are pulled together in end-to-end relationship. Then, the ends are abuttingly aligned. By repeatedly cutting both abutting edges simultaneously, the edges are made to lie in substantially parallel planes, face-to-face, to form therebetween a joint with a welding gap characterized by close tolerances.
Inventors
- 👤 B Warren
- 👤 P Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:35
CPC Classifications
F; F16; F16L; F16L1/00; F16L1/26; B; B23; B23K; B23K37/00; B23K37/04; B23K37/053; B23K37/0533; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
63 words
A method for working on the edges of two adjacent pipe sections lying on the bed of a body of water including the steps of: a. aligning the adjacent pipe sections to bring at least portions of their edges in longitudinal abutting engagement along an arcuate path; and b. simultaneously cutting the abutting portions of the edges to establish a close fit therebetween.
Claim 2
Independent Claim
63 words
A method for working on the edges of two adjacent pipe sections lying on the bed of a body of water including the steps of: a. aligning the adjacent pipe sections to bring at least portions of their edges in longitudinal abutting engagement along an arcuate path; and b. simultaneously cutting the abutting portions of the edges to establish a close fit therebetween.
Claim 3
Dependent Claim
24 words
In the method of claim 1 repeating at least once steps (a) and (b) to make the abutting edges lie in substantially parallel planes.
Claim 4
Dependent Claim
17 words
The method of claim 2 wherein step (a) includes pulling the two pipe sections toward each other.
Claim 5
Dependent Claim
24 words
The method of claim 3 wherein step (b) includes moving a cutting tool about at least a fractional orbit extending over said arcuate path.
Claim 6
Dependent Claim
18 words
The method of claim 4 wherein step (b) includes rotating said tool while it moves about said orbit.
Claim 7
Dependent Claim
17 words
The method of claim 5 wherein step (b) includes oscillating said cutting tool about said fractional orbit.
Claim 8
Dependent Claim
24 words
The method of claim 6 wherein said abutting edges form an angle therebetween, and said orbit lies in a plane substantially bi-secting said angle.
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) | 1976-01-23 | 1976-07-24 | 1977-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-23 | 1980-07-24 | 1981-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-23 | 1984-07-24 | 1985-01-23 | $7700.00 | Window Closed / Lapsed |