US3870004A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sailing vessel
Assignee: Individual
•
Filing: 1973-12-20
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Granted: 1975-03-11
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Expires: 1993-12-20
Abstract
Abstract A sailing vessel having no centerboard, no rudder and no fixed mast. The vessel has a loosely stepped mast or kingpost, an outwardly extending arm, and a stabilizer hull pivoted to the outer end of the arm, the stabilizer hull having an angled submerged blade. All overturning forces on the sail are countered by the resistance of the water against the inner side of the blade. This permits the sailing vessel to have many unusual features adding to its speed.
Inventors
- 👤 Donald W Bailey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 04:33
CPC Classifications
B; B63; B63B; B63B1/00; B63B1/02; B63B1/10; B63B1/14; B63B15/00; B63B15/02; B63B39/00; B63B39/06; B63B39/062; B63B2001/102
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
243 words
A sailing vessel comprising: a. a buoyant support hull; b. a kingpost stepped vertically in said support hull, said support hull being free to pivot about the lower end of said kingpost; c. a stabilizer arm attached at its upper near end to said kingpost at a fixed acute angle relative to the horizontal, said stabilizer arm being pivotable about the vertical axis of said kingpost; d. a buoyant stabilizer hull pivotally attached to the lower far end of said stabilizer arm, said pivotal attachment having a vertical axis; e. a blade-like drogueboard fixed to and depending downwardly from the undersurface of said stabilizer hull, said drogueboard and said stabilizer hull having their major dimensions in substantial alignment, said drogueboard being mounted on said stabilizer hull at said fixed acute angle relative to the vertical and on the support hull side of said stabilizer hull; f. a sail frame pivotally attached to the upper near end of said kingpost, said pivotal attachment having a vertical axis; g. a kitesail attached to said sail frame, said kitesail being positioned at said fixed acute angle relative to the vertical, the upper portion of said kitesail being angled on the stabilizer hull side of said support hull; and h. control means attached to said stabilizer hull and to said sail frame for pivoting said hull about said stabilizer arm and for pivoting said frame about said kingpost whereby the course of the sailing vessel is steered.
Claim 2
Dependent Claim
243 words
A sailing vessel comprising: a. a buoyant support hull; b. a kingpost stepped vertically in said support hull, said support hull being free to pivot about the lower end of said kingpost; c. a stabilizer arm attached at its upper near end to said kingpost at a fixed acute angle relative to the horizontal, said stabilizer arm being pivotable about the vertical axis of said kingpost; d. a buoyant stabilizer hull pivotally attached to the lower far end of said stabilizer arm, said pivotal attachment having a vertical axis; e. a blade-like drogueboard fixed to and depending downwardly from the undersurface of said stabilizer hull, said drogueboard and said stabilizer hull having their major dimensions in substantial alignment, said drogueboard being mounted on said stabilizer hull at said fixed acute angle relative to the vertical and on the support hull side of said stabilizer hull; f. a sail frame pivotally attached to the upper near end of said kingpost, said pivotal attachment having a vertical axis; g. a kitesail attached to said sail frame, said kitesail being positioned at said fixed acute angle relative to the vertical, the upper portion of said kitesail being angled on the stabilizer hull side of said support hull; and h. control means attached to said stabilizer hull and to said sail frame for pivoting said hull about said stabilizer arm and for pivoting said frame about said kingpost whereby the course of the sailing vessel is steered.
Claim 3
Dependent Claim
22 words
The sailing vessel of claim 1 wherein said kingpost is stepped vertically and below the center of buoyancy in said support hull.
Claim 4
Dependent Claim
21 words
The sailing vessel of claim 1 wherein said support hull is free to wobble about the lower end of said kingpost.
Claim 5
Dependent Claim
24 words
The sailing vessel of claim 1 wherein said support hull has a fixed centered tail fin mounted on its stern to maintain forward direction.
Claim 6
Dependent Claim
26 words
The sailing vessel of claim 1 wherein said stabilizer hull has a long thin shape in which its length is at least ten times its width.
Claim 7
Dependent Claim
19 words
The sailing vessel of claim 1 wherein said fixed acute angle is in the range of 10* to 45*.
Claim 8
Dependent Claim
21 words
The sailing vessel of claim 1 wherein said sail frame is positioned at said fixed acute angle relative to the vertical.
Claim 9
Dependent Claim
32 words
The sailing vessel of claim 1 wherein said sail frame is further pivotally attached to the upper end of said kingpost, said pivotal attachment having both a horizontal and a vertical axis.
Claim 10
Dependent Claim
20 words
The sailing vessel of claim 1 wherein said vessel is symmetrical about a vertical section taken through said stabilizer arm.
Claim 11
Dependent Claim
231 words
A sailing vessel comprising: a. support means for supporting the sailing vessel, b. kingpost means stepped in said support means, said support means being free to pivot about the lower end of said kingpost means; c. a stabilizer element; d. a blade element fixed to and depending downwardly from the undersurface of said stabilizer element, said blade element and said stabilizer element having their maJor dimensions in substantial alignment, said blade element being mounted on said stabilizer element at a fixed acute angle relative to the vertical; e. a stabilizer arm pivotally attached at its lower far end to said stabilizer element, said pivotal attachment having a vertical axis; f. a sail frame; g. said kingpost means, said stabilizer arm and said sail frame being attached together, said stabilizer arm being maintained at a fixed acute angle relative to the horizontal, said stabilizer arm being pivotable about a vertical axis, and said sail frame being pivotable about a vertical axis; h. a kitesail attached to said sail frame, said kitesail being positioned at said fixed acute angle relative to the vertical, the upper portion of said kitesail being angled on the stabilizer element side of said support means; and i. control means attached to said stabilizer element and to said sail frame for pivoting said element and said frame about vertical axes whereby the course of the sailing vessel is steered.
Claim 12
Dependent Claim
231 words
A sailing vessel comprising: a. support means for supporting the sailing vessel, b. kingpost means stepped in said support means, said support means being free to pivot about the lower end of said kingpost means; c. a stabilizer element; d. a blade element fixed to and depending downwardly from the undersurface of said stabilizer element, said blade element and said stabilizer element having their maJor dimensions in substantial alignment, said blade element being mounted on said stabilizer element at a fixed acute angle relative to the vertical; e. a stabilizer arm pivotally attached at its lower far end to said stabilizer element, said pivotal attachment having a vertical axis; f. a sail frame; g. said kingpost means, said stabilizer arm and said sail frame being attached together, said stabilizer arm being maintained at a fixed acute angle relative to the horizontal, said stabilizer arm being pivotable about a vertical axis, and said sail frame being pivotable about a vertical axis; h. a kitesail attached to said sail frame, said kitesail being positioned at said fixed acute angle relative to the vertical, the upper portion of said kitesail being angled on the stabilizer element side of said support means; and i. control means attached to said stabilizer element and to said sail frame for pivoting said element and said frame about vertical axes whereby the course of the sailing vessel is steered.
Claim 13
Dependent Claim
231 words
A sailing vessel comprising: a. support means for supporting the sailing vessel, b. kingpost means stepped in said support means, said support means being free to pivot about the lower end of said kingpost means; c. a stabilizer element; d. a blade element fixed to and depending downwardly from the undersurface of said stabilizer element, said blade element and said stabilizer element having their maJor dimensions in substantial alignment, said blade element being mounted on said stabilizer element at a fixed acute angle relative to the vertical; e. a stabilizer arm pivotally attached at its lower far end to said stabilizer element, said pivotal attachment having a vertical axis; f. a sail frame; g. said kingpost means, said stabilizer arm and said sail frame being attached together, said stabilizer arm being maintained at a fixed acute angle relative to the horizontal, said stabilizer arm being pivotable about a vertical axis, and said sail frame being pivotable about a vertical axis; h. a kitesail attached to said sail frame, said kitesail being positioned at said fixed acute angle relative to the vertical, the upper portion of said kitesail being angled on the stabilizer element side of said support means; and i. control means attached to said stabilizer element and to said sail frame for pivoting said element and said frame about vertical axes whereby the course of the sailing vessel is steered.
Claim 14
Dependent Claim
231 words
A sailing vessel comprising: a. support means for supporting the sailing vessel, b. kingpost means stepped in said support means, said support means being free to pivot about the lower end of said kingpost means; c. a stabilizer element; d. a blade element fixed to and depending downwardly from the undersurface of said stabilizer element, said blade element and said stabilizer element having their maJor dimensions in substantial alignment, said blade element being mounted on said stabilizer element at a fixed acute angle relative to the vertical; e. a stabilizer arm pivotally attached at its lower far end to said stabilizer element, said pivotal attachment having a vertical axis; f. a sail frame; g. said kingpost means, said stabilizer arm and said sail frame being attached together, said stabilizer arm being maintained at a fixed acute angle relative to the horizontal, said stabilizer arm being pivotable about a vertical axis, and said sail frame being pivotable about a vertical axis; h. a kitesail attached to said sail frame, said kitesail being positioned at said fixed acute angle relative to the vertical, the upper portion of said kitesail being angled on the stabilizer element side of said support means; and i. control means attached to said stabilizer element and to said sail frame for pivoting said element and said frame about vertical axes whereby the course of the sailing vessel is steered.
Claim 15
Dependent Claim
61 words
The sailing vessel of claim 10 wherein said support means includes two freely pivoting support hulls, and said kingpost means has two depending posts, each said post being loosely stepped below the center of buoyancy in one of said support hulls, each said support hull being free to pivot and wobble about the lower end of its support means depending post.
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) | 1978-03-10 | 1978-09-09 | 1979-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-10 | 1982-09-09 | 1983-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-10 | 1986-09-09 | 1987-03-11 | $7700.00 | Window Closed / Lapsed |