Patent US4741281A successfully refreshed from Google Patents.
Patent US3867894A successfully refreshed from Google Patents.
US3867894A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boats and other devices driven by a sail
Assignee: Individual
•
Filing: 1973-09-04
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Granted: 1975-02-25
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Expires: 1993-09-04
Abstract
Abstract A sailing boat with a mainsail pivotable about an axis extending obliquely to the mast. An upper end of the mainsail is pivotably connected to the mast and lower ends of the sail are attached to a yard pivoted intermediate its ends on an end of a boom pivoted at its other end on the mast.
Inventors
- 👤 Pierre Georges Vicard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:57
CPC Classifications
B; B63; B63B; B63B3/00; B63B3/14; B63B3/38; B63H; B63H9/00; B63H9/04; B63H9/08
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
141 words
An improved sail arrangement for sailing craft having a mast, comprising: a sail having a leading edge extending substantially upwardly and having a lower edge extending approximately horizontally, the upper end of the sail being pivotally supported in the vicinity of the head of the mast, a yard underlying said lower edge of the sail and attached thereto at least at the leading and trailing corners of the sail, a boom pivotally supported at its forward end near the base of the mast below the yard, and the boom being connected near its other end to the yard at a pivot point intermediate the ends of the yard, and downhaul means connected between the boom and the sailing craft and operative to pivot the boom through an angle about the mast to selectively move said pivot point transversely of the craft.
Claim 2
Dependent Claim
141 words
An improved sail arrangement for sailing craft having a mast, comprising: a sail having a leading edge extending substantially upwardly and having a lower edge extending approximately horizontally, the upper end of the sail being pivotally supported in the vicinity of the head of the mast, a yard underlying said lower edge of the sail and attached thereto at least at the leading and trailing corners of the sail, a boom pivotally supported at its forward end near the base of the mast below the yard, and the boom being connected near its other end to the yard at a pivot point intermediate the ends of the yard, and downhaul means connected between the boom and the sailing craft and operative to pivot the boom through an angle about the mast to selectively move said pivot point transversely of the craft.
Claim 3
Dependent Claim
67 words
The sail arrangement as set forth in claim 1, wherein the head of the masT has a swan-neck portion extending from the mast in a direction to overlie said boom, and the upper end of the sail terminating in an upper corner fixed to said swan-neck portion to form a second pivot point, and said pivot points defining an oblique axis about which said sail can pivot.
Claim 4
Dependent Claim
45 words
The sail arrangement as set forth in claim 2, wherein said mast and swan-neck portion are hollow, and a halyard extending through the mast and through said swan-neck portion and fixed to said upper corner of the sail, and the sail pivoting about said halyard.
Claim 5
Dependent Claim
58 words
The sail arrangement as set forth in claim 2, said sail having a bolt-rope extending the length of its leading edge and the sail comprising a fabric material folded about said bolt-rope to form a pocket to receive the rope, whereby the leading edge of the sail is provided with a thickened aerodynamic profile when viewed in cross-section.
References Cited (Backward Citations)
US3173395A
Cited
US3195494A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-24 | 1978-08-26 | 1979-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-24 | 1982-08-26 | 1983-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-24 | 1986-08-26 | 1987-02-25 | $7700.00 | Window Closed / Lapsed |