Patent US3768426A successfully refreshed from Google Patents.
US3768426A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sailboat rigging
Assignee: Individual
•
Filing: 1972-02-29
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Granted: 1973-10-30
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Expires: 1992-02-29
Abstract
Abstract A sailboat in which an upwardly-extending mast is mounted upon the hull for free swinging movement about an upwardly-extending axis of rotation located aft of the mast and the boom is mounted for free pivotal movement about a pivotal axis extending transverse to both the axis of rotation and the boom intermediate the ends of the boom to allow upward and downward movement of the opposite ends of the boom, thus tending to balance the tension at the leech and the luff of the sail. In a gaff-rigged sailboat, the mast is hinged near its bottom end and the gaff is hinged to the mast near the top end of the mast so that the gaff can be folded against the mast and the mast and gaff together can be folded to a fore and aft position for ready transport of the sailboat, with minimal dismantling of the rigging.
Inventors
- 👤 K Kratz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:57
CPC Classifications
B; B63; B63B; B63B15/00; B63B15/0083
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
142 words
In a sailing boat having a hull and a sail supported by a mast extending laterally from a bottom end to a top end and a boom extending laterally from one end adjacent the mast to an opposite end remote from the mast: first means mounting the mast upon the hull for free rotation about an axis of rotation extending upwardly and spaced laterally from the mast in the direction extending from the mast toward the remote end of the boom; and second means coupled to the boom for enabling free pivotal movement of the boom about a pivotal axis extending transverse to both said axis of rotation and said direction and passing through a point located laterally intermediate the opposite ends of the boom to allow upward and downward movement of said opposite ends of the boom about the pivotal axis.
Claim 2
Dependent Claim
142 words
In a sailing boat having a hull and a sail supported by a mast extending laterally from a bottom end to a top end and a boom extending laterally from one end adjacent the mast to an opposite end remote from the mast: first means mounting the mast upon the hull for free rotation about an axis of rotation extending upwardly and spaced laterally from the mast in the direction extending from the mast toward the remote end of the boom; and second means coupled to the boom for enabling free pivotal movement of the boom about a pivotal axis extending transverse to both said axis of rotation and said direction and passing through a point located laterally intermediate the opposite ends of the boom to allow upward and downward movement of said opposite ends of the boom about the pivotal axis.
Claim 3
Dependent Claim
157 words
The invention of claim 1 further including: first hinge means coupling the mast with the first means such that the mast is movable between a first position wherein said mast extends upwardly and a second position wherein said mast extends laterally generally parallel to the boom; a gaff; and second hinge means affixing the gaff to the mast at a location spaced upwardly from the boom, when the mast is in the first position thereof, said second hinge means permitting movement of the gaff from a first position wherein the gaff extends laterally from the mast, in the same general direction as the boom, to a second position wherein the gaff extends along the mast; said first hinge means being located upwardly relative to the boom a distance sufficient to enable both said mast and said gaff to extend laterally generally parallel to the boom when the mast and the gaff are in their respective second positions.
Claim 4
Dependent Claim
16 words
The invention of claim 1 wherein said second means mounts the boom upon said first means.
Claim 5
Dependent Claim
40 words
The invention of claim 3 wherein said second means is selectively movable relative to the boom and relative to the first means to selectively change the location of the pivotal axis laterally relative to the opposite ends of the boom.
Claim 6
Dependent Claim
38 words
The invention of claim 3 wherein said second means is selectively movable relative to the first means upwardly and downwardly to selectively change the location of said boom relative to the top and bottom ends of the mast.
Claim 7
Dependent Claim
23 words
The invention of claim 3 wherein said pivotal axis is located between the axis of rotation and said remote end of the boom.
Claim 8
Dependent Claim
20 words
The invention of claim 6 wherein said pivotal axis is located in the vicinity of the mid-point of the boom.
Claim 9
Dependent Claim
29 words
The invention of claim 7 wherein the mast and the axis or rotation lie in a common plane and the second means confines the boom to said common plane.
Claim 10
Dependent Claim
13 words
The invention of claim 7 wherein said pivotal axis passes through the boom.
Claim 11
Dependent Claim
19 words
The invention of claim 9 wherein said axis of rotation is adjacent the center of effort of the sail.
Claim 12
Dependent Claim
50 words
The invention of claim 1 wherein: the first means includes a horizontal beam having opposite ends, one of said ends being affixed to the mast, and means journalling the beam upon the hull for rotation about the axis of rotation; and said second means couples the boom to said beam.
Claim 13
Dependent Claim
63 words
The invention of claim 11 wherein: said beam includes a portion extending beyond the axis of rotation in the direction toward the remote end of the boom and is disPosed below the boom; and said second means includes a member extending between the boom and said beam portion and mounting the boom for pivotal movement about the pivotal axis relative to the beam.
Claim 14
Dependent Claim
40 words
The invention of claim 12 wherein said member is selectively movable to any one of a plurality of locations along the boom to selectively change the lateral location of the pivotal axis relative to the opposite ends of the boom.
Claim 15
Dependent Claim
32 words
The invention of claim 12 wherein said member is selectively movable upwardly and downwardly to selectively change the location of the boom relative to the top and bottom ends of the mast.
Claim 16
Dependent Claim
61 words
The invention of claim 12 wherein said member extends upwardly from said beam portion, said member including pivotal mounting means carried thereby and engaging the boom and means enabling selective lateral displacement of said member relative to said beam portion and the boom to selectively change the lateral location of the pivotal axis relative to the opposite ends of the boom.
Claim 17
Dependent Claim
36 words
The invention of claim 15 including means enabling selective displacement of the pivotal mounting means upwardly and downwardly to selectively change the location of the boom relative to the top and bottom ends of the mast.
Claim 18
Dependent Claim
20 words
The invention of claim 12 wherein the pivotal axis is located in the vicinity of the mid-point of the boom.
Claim 19
Dependent Claim
28 words
The invention of claim 17 wherein the mast and the axis of rotation lie in a common plane and the member confines the boom to said common plane.
Claim 20
Dependent Claim
13 words
The invention of claim 18 wherein said pivotal axis passes through the boom.
Claim 21
Dependent Claim
19 words
The invention of claim 19 wherein said axis of rotation is adjacent the center of effort of the sail.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-29 | 1977-04-30 | 1977-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-29 | 1981-04-30 | 1981-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-29 | 1985-04-30 | 1985-10-30 | $7700.00 | Window Closed / Lapsed |