US4192247A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sailing vessel
Assignee: Individual
•
Filing: 1978-07-05
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Granted: 1980-03-11
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Expires: 1998-07-05
Abstract
Abstract A triple-hulled sailing vessel has a mast on its center hull. The lower end of the mast is pivotally connected to the center hull and a rigid transverse brace is connected to the central hull so that it pivots as the mast pivots; the outer ends of the brace are pivoted to the respective flanking hulls. Links are pivoted to the flanking hulls; these links extend upwardly towards the mast and are pivoted to a connecting member which is secured to it; the pivot axes being located adjacent to, but at opposite sides of the mast. Springs are interposed in these links and also in the brace; in the latter they are provided at locations intermediate the center hull and the flanking hulls. This construction increases the self-righting ability of the vessel under the heeling influence of wind, making the structure stable throughout its heelable range.
Inventors
- 👤 John Riordan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:04
CPC Classifications
B; B63; B63B; B63B1/00; B63B1/02; B63B1/10; B63B1/14
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
203 words
A sailing vessel, having an effective center of gravity and an effective metacenter, said center of gravity and said metacenter being spaced from one another at a predetermined distance comprising: a longitudinal center hull and two outrigger hulls flanking said center hull at opposite lateral sides of the same, a mast mounted on said center hull; a first pivot mounting a lower end of said mast to said center hull for pivotal movement about a first axis extending lengthwise of said center hull; a first elongated member including a transverse brace mounted on said center hull for pivotal movement about said first axis; second pivots mounting lateral ends of said transverse brace to said outrigger hulls respectively, for pivotal movement about respective second axes extending substantially parallel to said first axis; and second elongated members, each including a rigid link having a lower end portion pivoted to a respective outrigger hull for movement about the respective second axis, and each having an upper end pivoted to said mast and upwardly spaced from said center hull for pivotal movement about a respective third pivot axis substantially parallel to said first and second axes, said upper ends being located at opposite sides of said mast.
Claim 2
Dependent Claim
203 words
A sailing vessel, having an effective center of gravity and an effective metacenter, said center of gravity and said metacenter being spaced from one another at a predetermined distance comprising: a longitudinal center hull and two outrigger hulls flanking said center hull at opposite lateral sides of the same, a mast mounted on said center hull; a first pivot mounting a lower end of said mast to said center hull for pivotal movement about a first axis extending lengthwise of said center hull; a first elongated member including a transverse brace mounted on said center hull for pivotal movement about said first axis; second pivots mounting lateral ends of said transverse brace to said outrigger hulls respectively, for pivotal movement about respective second axes extending substantially parallel to said first axis; and second elongated members, each including a rigid link having a lower end portion pivoted to a respective outrigger hull for movement about the respective second axis, and each having an upper end pivoted to said mast and upwardly spaced from said center hull for pivotal movement about a respective third pivot axis substantially parallel to said first and second axes, said upper ends being located at opposite sides of said mast.
Claim 3
Dependent Claim
23 words
A sailing vessel as claimed in claim 1, and further comprising elastically extensible means interposed in at least some of said elongated members.
Claim 4
Dependent Claim
60 words
A sailing vessel as claimed in claim 2, wherein said elastically extensible means interconnect portions of said brace and thereby connect said hulls with one another and with said mast in a manner so that the horizontal distance between the center of gravity and a point about which the vessel rotates when heeling, increases as the angle of heel increases.
Claim 5
Dependent Claim
17 words
A sealing vessel as claimed in claim 2, wherein said elastically extensible means comprise helical expansion springs.
Claim 6
Dependent Claim
32 words
A sailing vessel as claimed in claim 2, wherein each elongated member is in the form of a longitudinally interrupted bar having two sections which are connected by said elastically extensible means.
Claim 7
Dependent Claim
56 words
A sailing vessel as claimed in claim 2, wherein said brace is in the form of a bar having a center section pivoted to said center hull and two separate end sections each pivoted to one of said outrigger hulls, each of said end sections being connected to said center section by said elastically extensible means.
Claim 8
Dependent Claim
35 words
A sailing vessel as claimed in claim 1, wherein said sailing vessel has a center of effort and said upper ends of said links are pivoted to said mast substantially at the center of effort.
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) | 1983-03-11 | 1983-09-10 | 1984-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-03-11 | 1987-09-10 | 1988-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-03-11 | 1991-09-10 | 1992-03-11 | $7700.00 | Window Closed / Lapsed |