Patent US249587A successfully refreshed from Google Patents.
US3960102A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trimarans
Assignee: Individual
•
Filing: 1975-06-24
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Granted: 1976-06-01
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Expires: 1995-06-24
Abstract
Abstract A trimaran has a central hull, a pair of floats and outriggers for supporting the floats on each side of the central hull, and inboard supports from which the floats can be suspended in an inboard position. The outriggers are pivotally mounted, about substantially vertical axes, on the central hull, so that the floats can be moved bodily along track surfaces defined by the outriggers until the floats are supported from the inboard supports. The outriggers can then be pivoted so that they are positioned alongside the central hull. The arrangement allows easy overland transportation of the trimaran on a trailer.
Inventors
- 👤 Duncan Clement Davy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:36
CPC Classifications
B; B63; B63B; B63B1/00; B63B1/02; B63B1/10; B63B1/14; B63B2001/145
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
80 words
A trimaran having a central hull, a pair of floats, outriggers for supporting the floats on each side of the central hull, and inboard supports from which the floats can be suspended in an inboard position, the outriggers being pivotally mounted on the central hull, so that the floats can be moved bodily along the outriggers until they are supported from the inboard supports and then the outriggers can be pivoted so that they are positioned alongside the central hull.
Claim 2
Dependent Claim
80 words
A trimaran having a central hull, a pair of floats, outriggers for supporting the floats on each side of the central hull, and inboard supports from which the floats can be suspended in an inboard position, the outriggers being pivotally mounted on the central hull, so that the floats can be moved bodily along the outriggers until they are supported from the inboard supports and then the outriggers can be pivoted so that they are positioned alongside the central hull.
Claim 3
Dependent Claim
27 words
A trimaran as claimed in claim 1, wherein each outrigger comprises a lower member which serves as a track for track bearing means carried by the float.
Claim 4
Dependent Claim
21 words
A trimaran as claimed in claim 1 provided with means for pivoting the outriggers upwardly from mooring positions to sailing positions.
Claim 5
Dependent Claim
22 words
A trimaran as claimed in claim 1 provided with members for bracing the outriggers when the latter are in their operative positions.
Claim 6
Dependent Claim
15 words
A trimaran as claimed in claim 4, wherein the bracing members also serve as decking.
Claim 7
Dependent Claim
18 words
A trimaran as claimed in claim 4, wherein the bracing members are hingedly attached to the central hull.
Claim 8
Dependent Claim
22 words
A trimaran as claimed in claim 1, wherein the central hull is recessed to accommodate the floats, when in their inoperative positions.
Claim 9
Dependent Claim
16 words
A trimaran as claimed in claim 2, wherein the lower member is of inverted T cross-section.
Claim 10
Dependent Claim
15 words
A trimaran as claimed in claim 2, wherein the lower member is of box cross-section.
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) | 1979-06-01 | 1979-12-01 | 1980-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-01 | 1983-12-01 | 1984-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-01 | 1987-12-01 | 1988-06-01 | $7700.00 | Window Closed / Lapsed |