Patent US3985106A successfully refreshed from Google Patents.
US3985106A
Expired / Lapsed
US
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Sailboat stabilizing system
Assignee: Individual
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Filing: 1975-02-25
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Granted: 1976-10-12
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Expires: 1995-02-25
Abstract
Abstract Mast is pivoted to sailboat hull and carries a counter-balance weight below the pivot. Wind pressure causes mast heeling with the counter-balance supplying the mast-righting force. Additionally, movable weights in the hull bottom are cable-connected to the mast so that, upon mast heeling with respect to the hull, the weights are moved upward and outward. The underwater structure of the sailboat is also controlled by mast listing or heeling. When centerboard-equipped, the centerboard is lowered with mast heeling. When keel-equipped, the pivoted keel is swung for maximum stability.
Inventors
- 👤 Abraham D. Ross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:05
CPC Classifications
B; B63; B63B; B63B15/00; B63B15/02; B63B43/00; B63B43/02; B63B43/04; B63B43/08; B63B2015/0016; B63B2015/005; B63B2015/0066; B63B2015/0075
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
117 words
A sailboat having a sailboat stabilizing system comprising: a sailboat hull; a mast pivotally mounted on a pivot point with respect to said hull, a partially circular arcuate track in said hull having its center point substantially at said pivot point; a counter-weight secured to said mast below said pivot point to urge said mast forward in upright position; said mast engaging in said track so that said track provides support to said mast from said hull; a movable non-resilient weight positioned to move on and be supported on said mast-supporting track, said movable weight being connected to said mast so that, as said mast rotates about its pivot, said movable weight is moved in said hull.
Claim 2
Dependent Claim
117 words
A sailboat having a sailboat stabilizing system comprising: a sailboat hull; a mast pivotally mounted on a pivot point with respect to said hull, a partially circular arcuate track in said hull having its center point substantially at said pivot point; a counter-weight secured to said mast below said pivot point to urge said mast forward in upright position; said mast engaging in said track so that said track provides support to said mast from said hull; a movable non-resilient weight positioned to move on and be supported on said mast-supporting track, said movable weight being connected to said mast so that, as said mast rotates about its pivot, said movable weight is moved in said hull.
Claim 3
Dependent Claim
30 words
The sailboat of claim 1 wherein said movable weight is arcuately curved to fit said track, said movable weight having a plurality of rollers therein for rolling on said track.
Claim 4
Dependent Claim
22 words
The sailboat of claim 2 wherein a flanged guide extends over said movable weight to restrain said movable weight adjacent said track.
Claim 5
Dependent Claim
44 words
The sailboat of claim 1 wherein there are first and second movable weights respectively positioned on opposite sides of said mast in said hull, each of said mast weights to be raised when said mast rotates about its pivot with respect to said hull.
Claim 6
Dependent Claim
34 words
The sailboat of claim 4 wherein said first and second movable weights are arcuately curved to fit said track, said movable weights each having a plurality of rollers therein for rolling on said track.
Claim 7
Dependent Claim
25 words
The sailboat of claim 5 wherein a flanged guide extends over the first and second movable weights to restrain said movable weights adjacent said track.
Claim 8
Dependent Claim
49 words
The sailboat of claim 4 wherein first and second cables are respectively connected between said mast and said first and second movable weights so that, when said mast is rotated with respect to said hull, both of said movable weights are moved upward along said track within said hull.
Claim 9
Dependent Claim
42 words
The sailboat of claim 1 further including a center board within said hull, a cable connecting said mast to said center board so that, when said mast is rotated with respect to said hull, said center board is extended from said hull.
Claim 10
Dependent Claim
41 words
The sailboat of claim 1 further including first and second hinged keels secured to the exterior of said hull, said hinged keels being separately oppositely hinged so that each resists lateral water force with respect to said hull in opposite directions.
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) | 1979-10-12 | 1980-04-12 | 1980-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-12 | 1984-04-12 | 1984-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-12 | 1988-04-12 | 1988-10-12 | $7700.00 | Window Closed / Lapsed |