Patent US3566819A successfully refreshed from Google Patents.
US3566819A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sailing craft
Assignee: Individual
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Filing: 1969-04-28
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Granted: 1971-03-02
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Expires: 1989-04-28
Abstract
Abstract The disclosure provides a sailing craft having elongate parallel hulls pivotable about axes parallel to the length of the hulls, and a pivotable mast operatively connected to the hulls whereby pivotal motion of the mast in a first sense will result in pivotal motion of the two hulls in the reverse sense of rotation. The craft may be used either on water or as a snow yacht.
Inventors
- 👤 James Edward Keddie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:41
CPC Classifications
B; B63; B63B; B63B15/00; B63B15/0083; B63B1/00; B63B1/02; B63B1/10; B63B1/14
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
114 words
A sailing craft comprising a frame; at least two elongate hulls extending generally parallel one with the other; a mast attached to said frame; pivot means connecting said mast to said frame for pivoting movement about an axis parallel to the length of said parallel hulls; means mounting each of said hulls pivotally with respect to said frame for pivotal motion about an axis extending parallel with the length of the parallel hulls; and control means operatively connecting said mast to said hulls for effecting simultaneous pivoting motion by, on the one hand, said mast in a first direction of rotation and, on the other hand, said hulls in the reverse sense of rotation.
Claim 2
Dependent Claim
114 words
A sailing craft comprising a frame; at least two elongate hulls extending generally parallel one with the other; a mast attached to said frame; pivot means connecting said mast to said frame for pivoting movement about an axis parallel to the length of said parallel hulls; means mounting each of said hulls pivotally with respect to said frame for pivotal motion about an axis extending parallel with the length of the parallel hulls; and control means operatively connecting said mast to said hulls for effecting simultaneous pivoting motion by, on the one hand, said mast in a first direction of rotation and, on the other hand, said hulls in the reverse sense of rotation.
Claim 3
Dependent Claim
76 words
A sailing craft as set forth in claim 1, wherein said control means operatively connecTing said mast to said hulls comprises an upwardly extending arm formed on each hull, first articulation means on said mast below said pivot means, second articulation means formed at the free end of each of said arms, and a pair of pivotably mounted links each link being articulated to said first articulation means and a respective one of second articulation means.
Claim 4
Dependent Claim
23 words
A sailing craft as set forth in claim 2, and comprising means for adjustably spacing said pivot means and said first articulation means.
Claim 5
Dependent Claim
61 words
A sailing craft as set forth in claim 3, wherein said adjustable spacing means comprises means defining a plurality of spaced apertures along said mast; and wherein said pivot means comprises a pivot pin of a size sufficient to enable said pin to be journaled in association with each of said apertures, and means connecting said pivot pin to said frame.
Claim 6
Dependent Claim
40 words
A sailing craft as set forth in claim 2, wherein said hulls are buoyant and will support the craft for flotation partially immersed up to a water line, and wherein said first articulation means is positioned above said water line.
Claim 7
Dependent Claim
27 words
A sailing craft as set forth in claim 1, wherein said hulls are flat-bottomed elongate skids each having a trapezoidal transverse section with symmetrical downwardly converging sidewalls.
References Cited (Backward Citations)
US3116708A
Cited
US3232261A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-01 | 1974-08-31 | 1975-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-01 | 1978-08-31 | 1979-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-01 | 1982-08-31 | 1983-03-02 | $7700.00 | Window Closed / Lapsed |