Patent US3889620A successfully refreshed from Google Patents.
US3889620A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Symmetrical sail assembly
Assignee: Individual
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Filing: 1974-02-01
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Granted: 1975-06-17
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Expires: 1994-02-01
Abstract
Abstract A sail and sail assembly to drive a wind propelled vehicle includes a pair of booms configured in a ''''V'''' pattern to carry a triangular sail between them. The booms are mounted with their adjacent ends upon a rotatable mount which is attached to the vehicle, the axis of symmetry between the two booms being in a vertical plane passing through a longitudinal axis of the vehicle. The booms are rotatable at least 180* about the axis of symmetry to enable the sail to catch the wind from any direction. The rotatable mount includes a turntable within a race mounted to the vehicle, to facilitate the rotation of the sail assembly, and a screw interconnection between the connected ends of the booms and the turntable to enable the angular separation of the booms to be controlled.
Inventors
- 👤 Charles Kenneth Dorland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:36
CPC Classifications
B; B63; B63H; B63H9/00; B63H9/04; B63H9/06; B63B; B63B35/00; B63B2035/009
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
122 words
In combination with a wind propelled vehicle, an assembly for carrying a sail above said wind-propelled vehicle comprising: a turntable mounted on said vehicle, means for rotating said turntable relative to said vehicle around an axis of symmetry passing through said turntable, a pair of booms for carrying a sail therebetween pivotally mounted at their lower ends to said turntable and extending divergently upwardly from said turntable and defining a plane with said axis of symmetry, said booms extending symmetrically upwardly with respect to said axis of symmetry, and means for tilting said turntable with respect to said vehicle about a substantially horizontal transverse axis whereby said axis of symmetry is movable from a substantially vertical position to a substantially horizontal position.
Claim 2
Dependent Claim
122 words
In combination with a wind propelled vehicle, an assembly for carrying a sail above said wind-propelled vehicle comprising: a turntable mounted on said vehicle, means for rotating said turntable relative to said vehicle around an axis of symmetry passing through said turntable, a pair of booms for carrying a sail therebetween pivotally mounted at their lower ends to said turntable and extending divergently upwardly from said turntable and defining a plane with said axis of symmetry, said booms extending symmetrically upwardly with respect to said axis of symmetry, and means for tilting said turntable with respect to said vehicle about a substantially horizontal transverse axis whereby said axis of symmetry is movable from a substantially vertical position to a substantially horizontal position.
Claim 3
Dependent Claim
36 words
The improvement according to claim 1 including means for pivoting said booms simultaneously relatively towards each other and simultaneously relatively away from each other within said plane for decreasing or increasing the divergency of said booms.
Claim 4
Dependent Claim
35 words
The improvement according to claim 2 wherein said turntable is provided with a pair of slots through which said booms extend and within which said booms are relatively movable towards and away from each other.
Claim 5
Dependent Claim
176 words
A sail boat comprising, a hull and a keel therebeneath, a mount carried by the hull, means for pivoting said mount with respect to said hull about a substantially horizontal transverse axis, a turntable rotatably carried by said mount, a race carried by said mount for rotatably supporting said turntable therein to facilitate its rotation, means for rotating said turntable with respect to said mount about a central axis of symmetry passing through said turntable and said mount, said turntable having a pair of elongated slots extending radially on opposite sides of said axis of symmetry, a pair of booms pivotally mounted at their lower ends in said turntable and extending divergently outwardly from said turntable through said elongated slots, said booms extending outwardly symmetrically with respect to said axis of symmetry, and means co-acting between said turntable and said booms for simultaneously moving said booms towards and away from each other so as to decrease or increase the divergency therebetween while maintaining the symmetrical relationship of said booms with respect to said axis of symmetry.
Claim 6
Dependent Claim
176 words
A sail boat comprising, a hull and a keel therebeneath, a mount carried by the hull, means for pivoting said mount with respect to said hull about a substantially horizontal transverse axis, a turntable rotatably carried by said mount, a race carried by said mount for rotatably supporting said turntable therein to facilitate its rotation, means for rotating said turntable with respect to said mount about a central axis of symmetry passing through said turntable and said mount, said turntable having a pair of elongated slots extending radially on opposite sides of said axis of symmetry, a pair of booms pivotally mounted at their lower ends in said turntable and extending divergently outwardly from said turntable through said elongated slots, said booms extending outwardly symmetrically with respect to said axis of symmetry, and means co-acting between said turntable and said booms for simultaneously moving said booms towards and away from each other so as to decrease or increase the divergency therebetween while maintaining the symmetrical relationship of said booms with respect to said axis of symmetry.
References Cited (Backward Citations)
US2170914A
Cited
US2126665A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-16 | 1978-12-16 | 1979-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-16 | 1982-12-16 | 1983-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-16 | 1986-12-16 | 1987-06-17 | $7700.00 | Window Closed / Lapsed |