Patent US3225602A successfully refreshed from Google Patents.
US3225602A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Balance chamber for deep sea coring
Assignee: Pacific Tugboat & Salvage Co
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Filing: 1963-10-21
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Granted: 1965-12-28
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Expires: 1983-10-21
Abstract
No abstract record available.
Inventors
- 👤 Barton Otis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:48
CPC Classifications
E; E21; E21B; E21B25/00; E21B25/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
A DEEP SEA CORING BARREL COMPRISING: A HOLLOW CYLINDRICAL BALANCE CHAMBER AND A CORE BARREL POSITIONED IN AXIAL ALIGNMENT, A ROD FIXEDLY ATTACHED TO BOTH THE BALANCE CHAMBER AND THE CORE BARREL AND EXTENDING BETWEEN THE BALANCE CHAMBER AND THE CORE BARREL, A PIPE EXTENDING INTO THE BALANCE CHAMBER AT ONE END AND INTO THE CORE BARREL AT THE OTHER END, A MANUALLY OPERABLE VALUE IN SAID PIPE POSITIONED BETWEEN THE BALANCE CHAMBER AND THE CORE BARREL, AND A CABLE EXTENDING TO THE VALVE TO OPEN SAID VALVE.
Claim 2
Dependent Claim
88 words
A DEEP SEA CORING BARREL COMPRISING: A HOLLOW CYLINDRICAL BALANCE CHAMBER AND A CORE BARREL POSITIONED IN AXIAL ALIGNMENT, A ROD FIXEDLY ATTACHED TO BOTH THE BALANCE CHAMBER AND THE CORE BARREL AND EXTENDING BETWEEN THE BALANCE CHAMBER AND THE CORE BARREL, A PIPE EXTENDING INTO THE BALANCE CHAMBER AT ONE END AND INTO THE CORE BARREL AT THE OTHER END, A MANUALLY OPERABLE VALUE IN SAID PIPE POSITIONED BETWEEN THE BALANCE CHAMBER AND THE CORE BARREL, AND A CABLE EXTENDING TO THE VALVE TO OPEN SAID VALVE.
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) | 1968-12-27 | 1969-06-28 | 1969-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-27 | 1973-06-28 | 1973-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-27 | 1977-06-28 | 1977-12-28 | $7700.00 | Window Closed / Lapsed |