Patent US3285574A successfully refreshed from Google Patents.
US3285574A
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Weight regulating apparatus for submarine drilling
Assignee: IFP Energies nouvelles
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Filing: 1964-04-10
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Granted: 1966-11-15
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Expires: 1984-04-10
Abstract
No abstract record available.
Inventors
- 👤 Berne Jean
- 👤 Moulin Pierre
- 👤 Casteran Jean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:27
CPC Classifications
E; E21; E21B; E21B17/00; E21B17/01; E21B19/00; E21B19/08; E21B19/09; E21B7/00; E21B7/12; E21B7/128
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
AN APPARATUS FOR REGULATING THE WEIGHT THAT IS EXERTED ON AN UNDERWATER DRILLING TOOL SUSPENDED FROM A FLOATING INSTALLATION BY A FLEXIBLE CONDUIT WHICH PASSES, ON THIS INSTALLATION, FROM A RETURN PULLEY TO A MEANS FOR MANEUVERING SAID CONDUIT, SAID APPARATUS COMPRISING AT LEAST ONE JACK SUSTAINING THE AXIS OF THE PULLEY AND ARTICULATED ON THE FLOATING INSTALLATION, SAID JACK BEING INCLINED TO THE VERTICAL PLANE OF THE AXIS OF THE PULLEY AND COM-
Claim 2
Independent Claim
74 words
AN APPARATUS FOR REGULATING THE WEIGHT THAT IS EXERTED ON AN UNDERWATER DRILLING TOOL SUSPENDED FROM A FLOATING INSTALLATION BY A FLEXIBLE CONDUIT WHICH PASSES, ON THIS INSTALLATION, FROM A RETURN PULLEY TO A MEANS FOR MANEUVERING SAID CONDUIT, SAID APPARATUS COMPRISING AT LEAST ONE JACK SUSTAINING THE AXIS OF THE PULLEY AND ARTICULATED ON THE FLOATING INSTALLATION, SAID JACK BEING INCLINED TO THE VERTICAL PLANE OF THE AXIS OF THE PULLEY AND COM-
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) | 1969-11-14 | 1970-05-16 | 1970-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-14 | 1974-05-16 | 1974-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-14 | 1978-05-16 | 1978-11-15 | $7700.00 | Window Closed / Lapsed |