Patent US3258928A successfully refreshed from Google Patents.
US3258928A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Riser installation
Assignee: Brown and Root Inc
•
Filing: 1963-02-11
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Granted: 1966-07-05
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Expires: 1983-02-11
Abstract
No abstract record available.
Inventors
- 👤 Edgar R Broadway
- 👤 Robert B Mcleod
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:00
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/01; E21B43/0107; F; F16; F16L; F16L1/00; F16L1/12; F16L1/14; F16L1/15
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
APPARATUS FOR POSITIONING A RISER COUPLED TO AT LEAST A PORTION OF A PIPELINE TO BE LAID ON A BED OF A BODY OF WATER, SAID APPARATUS INCLUDING SUPPORT MEANS HAVING AT LEAST A PORTION EXTENDING DOWNWARDLY INTO A BODY OF WATER; GUIDE MEANS COUPLED TO SAID PORTION OF SAID SUPPORT MEANS AND EXTENDING GENERALLY DOWNWARDLY INTO SAID BODY OF WATER; MEANS FOR LOWERING A RISER ALONG AND IN SLIDABLE ENGAGEMENT WITH SAID GUIDE MEANS; SEPARATE VESSEL MEANS FOR LOWERING AT LEAST A PORTION OF A PIPELINE COUPLED TO SAID RISER INTO SAID BODY OF WATER; AND FASTENING MEANS COUPLED TO SAID GUIDE MEANS FOR FIXEDLY POSITIONING SAID RISER AFTER SAID PIPELINE PORTION HAS BEEN LAID ON A BED OF THE BODY OF WATER.
Claim 2
Dependent Claim
124 words
APPARATUS FOR POSITIONING A RISER COUPLED TO AT LEAST A PORTION OF A PIPELINE TO BE LAID ON A BED OF A BODY OF WATER, SAID APPARATUS INCLUDING SUPPORT MEANS HAVING AT LEAST A PORTION EXTENDING DOWNWARDLY INTO A BODY OF WATER; GUIDE MEANS COUPLED TO SAID PORTION OF SAID SUPPORT MEANS AND EXTENDING GENERALLY DOWNWARDLY INTO SAID BODY OF WATER; MEANS FOR LOWERING A RISER ALONG AND IN SLIDABLE ENGAGEMENT WITH SAID GUIDE MEANS; SEPARATE VESSEL MEANS FOR LOWERING AT LEAST A PORTION OF A PIPELINE COUPLED TO SAID RISER INTO SAID BODY OF WATER; AND FASTENING MEANS COUPLED TO SAID GUIDE MEANS FOR FIXEDLY POSITIONING SAID RISER AFTER SAID PIPELINE PORTION HAS BEEN LAID ON A BED OF THE BODY OF WATER.
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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) | 1969-07-04 | 1970-01-03 | 1970-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-04 | 1974-01-03 | 1974-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-04 | 1978-01-03 | 1978-07-05 | $7700.00 | Window Closed / Lapsed |