US3929085A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trimaran
Assignee: Individual
•
Filing: 1974-11-04
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Granted: 1975-12-30
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Expires: 1994-11-04
Abstract
Abstract A trimaran type of sailboat is provided wherein the two outrigger hulls are resiliently and pivotally connected to the central hull in such a way as to permit the central hull to heel under the force of the wind much as an ordinary sailboat. A crank-operated pulley system is provided to operate the outriggers and bodily to raise them or force them downwardly to change the buoyancy force exerted by the leeward outrigger hull and the outrigger hulls may be hoisted to positions elevated off the water or inboard of the main hull for tacking, docking, mooring, or trailering purposes.
Inventors
- 👤 Scott M Mason
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:44
CPC Classifications
B; B63; B63B; B63B1/00; B63B1/02; B63B1/10; B63B1/14
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
165 words
In a trimaran having one central and two outrigger hulls, each outrigger being connected to the central hull by a pair of mutually spaced arms which are resiliently pivoted to the central hull to permit the central hull to heel to the wind with respect to the outrigger hulls in the manner of a single hull sailing vessel, the improvement wherein there are provided ajusting means operatively connected to each of said pairs of arms forcibly lower at least the leeward outrigger hull thereby to increase the bouyancy force exerted thereby and correspondingly to adjust its stabilizing effect on the central hull and means for pivotally raising said outrigger hulls out of the water, and wherein each of said pairs of arms is mounted to pivot with a rod extending parallel to a side of the central hull and resilient means are provided acting between each rod and the central hull to permit gross movements of said outrigger hulls with respect to said central hull.
Claim 2
Dependent Claim
165 words
In a trimaran having one central and two outrigger hulls, each outrigger being connected to the central hull by a pair of mutually spaced arms which are resiliently pivoted to the central hull to permit the central hull to heel to the wind with respect to the outrigger hulls in the manner of a single hull sailing vessel, the improvement wherein there are provided ajusting means operatively connected to each of said pairs of arms forcibly lower at least the leeward outrigger hull thereby to increase the bouyancy force exerted thereby and correspondingly to adjust its stabilizing effect on the central hull and means for pivotally raising said outrigger hulls out of the water, and wherein each of said pairs of arms is mounted to pivot with a rod extending parallel to a side of the central hull and resilient means are provided acting between each rod and the central hull to permit gross movements of said outrigger hulls with respect to said central hull.
Claim 3
Dependent Claim
34 words
The combination of claim 1 wherein said adjusting means comprises at least one winch mounted on said cental hull and having an entrained line connected to pivot at least one pair of said arms.
Claim 4
Dependent Claim
15 words
The combination of claim 2 including a separate winch for operating each pair of arms.
Claim 5
Dependent Claim
22 words
The combination of claim 2 employing a single winch with its line disposed and arranged to operate both pairs of arms simultaneously.
Claim 6
Dependent Claim
44 words
The combination of claim 1 including a member mounted to pivot with each rod, a winch mounted on the central hull and a line entrained about said winch and in driving engagement with said member to pivot said rod in at least one direction.
Claim 7
Dependent Claim
32 words
The combination of claim 5 wherein said resilient means comprises springs acting between each of said rods and the central hull so as to resiliently to oppose the action of said winch.
Claim 8
Dependent Claim
32 words
The combination of claim 1 wherein said adjusting means comprises at least one winch and an entrained elastic line arranged to pivot a rod and said resilient means comprises said elastic line.
Claim 9
Dependent Claim
29 words
The combination of claim 1, wherein levers are provided connected to said rods for pivoting the same to raise the outrigger hulls to positions inboard of said central hull.
Claim 10
Dependent Claim
28 words
The combination of claim 8 including springs connected between the central hull and said levers yieldingly to urge the outrigger hulls upwardly in opposition to said adjusting means.
Claim 11
Dependent Claim
30 words
The combination of claim 9 wherein said adjusting means comprises an elastic line entrained about a winch and arranged to urge at least one of said pairs of arms downwardly.
Claim 12
Dependent Claim
48 words
The combination of claim 1 wherein said adjusting means is disposed and arranged to pivot said rods in either direction so as when pivoted in one direction for forcibly lower one outrigger hull and when pivoted in the other direction to raise said hull out of the water.
Claim 13
Dependent Claim
31 words
The combination of claim 2 wherein said resilient means are arranged to raise the outrigger hulls from the water when the downward force exerted by said winch and line is released.
Claim 14
Dependent Claim
20 words
The combination of claim 12 wherein said winch includes quick release mechanism whereby said downward force can be quickly released.
Claim 15
Dependent Claim
25 words
The combination of claim 13 wherein said means for pivotally raising said outrigger hulls is arranged to operate automatically when said downward force is released.
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) | 1978-12-29 | 1979-06-30 | 1979-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-29 | 1983-06-30 | 1983-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-29 | 1987-06-30 | 1987-12-30 | $7700.00 | Window Closed / Lapsed |