Patent US6582256B2 successfully refreshed from Google Patents.
Patent US3260232A successfully refreshed from Google Patents.
US3260232A
Expired / Lapsed
US
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Hydrostabilizer
Assignee: Douglas Aircraft Co Inc
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Filing: 1964-09-28
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Granted: 1966-07-12
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Expires: 1984-09-28
Abstract
No abstract record available.
Inventors
- 👤 Donald W Douglas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:12
CPC Classifications
B; B63; B63B; B63B39/00; B63B39/06; B63B39/062
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
A SUSPENDED HYDROFOIL STABILIZER SYSTEM FOR STABILIZING BOATS AND THE LIKE, COMPRISING: A PAIR OF HYDROSTABILIZERS EACH HAVING A CENTER OF GRAVITY LOCATED ON A LONGITUDINAL AXIS AND ADAPTED TO BE SUBMERGED IN A FLUID MEDIUM SUPPORTING A CRAFT; A PAIR OF BOOMS ADAPTED TO BE MOUNTED TO RESPECTIVE SIDES OF THE CRAFT; TWO SETS OF LINES CONNECTING SAID PAIR OF HYDROSTABILIZERS RESPECTIVELY TO SAID PAIR OF BOOMS, EACH SET OF LINES INCLUDING AT LEAST TWO LINES CONNECTED TO A CORRESPONDING HYDROSTABILIZER AT CONNECTION POINTS LOCATED ON NORMALLY VERTICAL TRANSVERSE PLANES WHICH INTERSECT THE LONGITUDINAL AXIS AT POINTS RESPECTIVELY FORWARD AND AFT OF THE CENTER OF GRAVITY THEREON; AND MEANS FOR LOWERING AND RAISING SAID HYDROSTABILIZERS IN THE FLUID MEDIUM.
Claim 2
Dependent Claim
120 words
A SUSPENDED HYDROFOIL STABILIZER SYSTEM FOR STABILIZING BOATS AND THE LIKE, COMPRISING: A PAIR OF HYDROSTABILIZERS EACH HAVING A CENTER OF GRAVITY LOCATED ON A LONGITUDINAL AXIS AND ADAPTED TO BE SUBMERGED IN A FLUID MEDIUM SUPPORTING A CRAFT; A PAIR OF BOOMS ADAPTED TO BE MOUNTED TO RESPECTIVE SIDES OF THE CRAFT; TWO SETS OF LINES CONNECTING SAID PAIR OF HYDROSTABILIZERS RESPECTIVELY TO SAID PAIR OF BOOMS, EACH SET OF LINES INCLUDING AT LEAST TWO LINES CONNECTED TO A CORRESPONDING HYDROSTABILIZER AT CONNECTION POINTS LOCATED ON NORMALLY VERTICAL TRANSVERSE PLANES WHICH INTERSECT THE LONGITUDINAL AXIS AT POINTS RESPECTIVELY FORWARD AND AFT OF THE CENTER OF GRAVITY THEREON; AND MEANS FOR LOWERING AND RAISING SAID HYDROSTABILIZERS IN THE FLUID MEDIUM.
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) | 1969-07-11 | 1970-01-10 | 1970-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-11 | 1974-01-10 | 1974-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-11 | 1978-01-10 | 1978-07-12 | $7700.00 | Window Closed / Lapsed |