Patent US3088428A successfully refreshed from Google Patents.
US3088428A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sail-boat
Assignee: Individual
•
Filing: 1959-07-21
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Granted: 1963-05-07
•
Expires: 1979-07-21
Abstract
No abstract record available.
Inventors
- 👤 Majnoni Marcello
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:42
CPC Classifications
B; B63; B63B; B63B1/00; B63B1/02; B63B1/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
IN A SAILBOAT, A HULL HAVING A BOW AND A LONGITUDINAL VERTICAL PLANE OF SYMMETRY, SAID HULL OF SUCH SHAPE THAT WHEN THE BOAT IS TILTED BY WIND TO ONE SIDE OF SAID PLANE THROUGH A PREDETERMINED ANGLE A FIRST SUBMERGED PORTION IS FORMED AND WHEN THE BOAT IS TILTED BY THE WIND TO THE OTHER SIDE OF SAID PLANE THROUGH THE SAME PREDETERMINED ANGLE A SECOND SUBMERGED PORTION IS FORMED, SID FIRST AND SECOND SUBMERGED HULL PORTIONS OF EQUAL SHAPE, EACH HAVING A SUBSTANTIALLY STRAIGHT KEEL LINE POINTING TOWARD THE BOW OF THE HULL, AND EACH SUBSTANTIALLY SYMMETRICAL WITH RESPECT TO ITS KEEL LINE, EACH SUBMERGED KEEL LINE DEFINING A WINDWARD DIRECTION TO TRAVEL FOR SAID BOAT.
Claim 2
Dependent Claim
118 words
IN A SAILBOAT, A HULL HAVING A BOW AND A LONGITUDINAL VERTICAL PLANE OF SYMMETRY, SAID HULL OF SUCH SHAPE THAT WHEN THE BOAT IS TILTED BY WIND TO ONE SIDE OF SAID PLANE THROUGH A PREDETERMINED ANGLE A FIRST SUBMERGED PORTION IS FORMED AND WHEN THE BOAT IS TILTED BY THE WIND TO THE OTHER SIDE OF SAID PLANE THROUGH THE SAME PREDETERMINED ANGLE A SECOND SUBMERGED PORTION IS FORMED, SID FIRST AND SECOND SUBMERGED HULL PORTIONS OF EQUAL SHAPE, EACH HAVING A SUBSTANTIALLY STRAIGHT KEEL LINE POINTING TOWARD THE BOW OF THE HULL, AND EACH SUBSTANTIALLY SYMMETRICAL WITH RESPECT TO ITS KEEL LINE, EACH SUBMERGED KEEL LINE DEFINING A WINDWARD DIRECTION TO TRAVEL FOR SAID BOAT.
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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) | 1966-05-06 | 1966-11-05 | 1967-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-06 | 1970-11-05 | 1971-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-06 | 1974-11-05 | 1975-05-07 | $7700.00 | Window Closed / Lapsed |