US3570259A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Annulus seal and pile wiper
Assignee: Oil States Rubber Co
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Filing: 1969-11-13
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Granted: 1971-03-16
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Expires: 1989-11-13
Abstract
Abstract A SEAL FOR SEALING THE ANNULUS BETWEEN A PILE AND A HOLLOW TUBULAR MEMBER SUCH AS A PLATFORM LEG OR A SKIRT GUIDE THROUGH WHICH IT EXTENDS, THE HOLLOW MEMBERS BEING LOCATED, FOR INSTANCE, AT THE BOTTOM OF A MARINE DRILLING PLATFORM SECURED BY MEANS OF PILES OF A MARINE OF THE SEA, AND ANNULUS BETWEEN EACH HOLLOW MEMBER AND PILE THROUGH IT BEING POURED FULL OF CEMENT ABOVE THE SEAL WHEN THE PLATFORM HAS BEEN MOVED INTO PLACE AND THE PILES HAVE BEEN DRIVEN.
Inventors
- 👤 Ellis B Thaxton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:09
CPC Classifications
E; E02; E02B; E02B17/00; E02B17/0008; Y; Y10; Y10S; Y10S277/00; Y10S277/917
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-15 | 1974-09-14 | 1975-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-15 | 1978-09-14 | 1979-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-15 | 1982-09-14 | 1983-03-16 | $7700.00 | Window Closed / Lapsed |