US4386574A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sail assembly of variable profile, reversible and collapsible
Assignee: Individual
•
Filing: 1981-12-15
•
Granted: 1983-06-07
•
Expires: 2001-12-15
Abstract
Abstract A sail assembly of variable profile, reversible and collapsible, comprising a mast on which are mounted ribs set apart one from the other, each one being constituted of two flexible laths joined together by hinge members, the ribs being covered with a supple material, such as for example sail cloth. Each rib includes a slide piece on which are pivotally mounted the two flexible laths and on which a mast is slidably mounted, the mast being fast in rotation with the slide and being adapted to be driven in rotation, the slide piece being provided at the back with a first cam which is fast with a shaft driven in rotation and comprising two arms connected together by transmission members pivotally mounted on the rear portion of the flexible laths. The invention finds an application in the production of sail assemblies of variable profile.
Inventors
- 👤 Pierre L. Riolland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:50
CPC Classifications
B; B63; B63H; B63H9/00; B63H9/04; B63H9/06; B63H9/061
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
205 words
Sail assembly of variable profile, reversible and collapsible, comprising a mast on which are mounted ribs set apart one from the other, each one being constituted of two flexible laths joined together by means of hinge members, the said ribs being covered with a supple material, such as for example sail cloth, an assembly wherein each rib comprises a slide piece on which the two laths are pivotally mounted and on which a mast is slidably mounted, said mast being fast in rotation with said slide and being adapted to be driven in rotation, the said slide piece being provided at the back with a first cam which is fast with a shaft driven in rotation and which comprises two arms connected by transmission members pivotally mounted on the rear portion of the flexible laths, said slide piece being provided at the front with a second cam which is fast with a shaft driven in rotation and which comprises two arms connected by small rods to the pivoting axles of the flexible laths on the slide piece, and said slide piece being joined at the front by way of a tension rod to a pivoting point on the front part of the two flexible laths.
Claim 2
Dependent Claim
205 words
Sail assembly of variable profile, reversible and collapsible, comprising a mast on which are mounted ribs set apart one from the other, each one being constituted of two flexible laths joined together by means of hinge members, the said ribs being covered with a supple material, such as for example sail cloth, an assembly wherein each rib comprises a slide piece on which the two laths are pivotally mounted and on which a mast is slidably mounted, said mast being fast in rotation with said slide and being adapted to be driven in rotation, the said slide piece being provided at the back with a first cam which is fast with a shaft driven in rotation and which comprises two arms connected by transmission members pivotally mounted on the rear portion of the flexible laths, said slide piece being provided at the front with a second cam which is fast with a shaft driven in rotation and which comprises two arms connected by small rods to the pivoting axles of the flexible laths on the slide piece, and said slide piece being joined at the front by way of a tension rod to a pivoting point on the front part of the two flexible laths.
Claim 3
Dependent Claim
74 words
Sail assembly as claimed in claim 1, wherein the said slide piece is provided in its center and on either side of its longitudinal axis with two pairs of grooves, in each one of which moves a pair of runners fast with an axle on which is pivotally mounted a lug integral with the middle part of each flexible lath and a small rod connected to the second cam situated at the fore end.
Claim 4
Dependent Claim
47 words
Sail assembly as claimed in claim 1, wherein, at the level of each rib, are provided sleeves which are fast in rotation with each cam and which are mounted for free rotation in the slide piece, said sleeves being fast in rotation with the respective driven shafts.
Claim 5
Dependent Claim
64 words
Sail assembly as claimed in claim 3, wherein said sleeves are of polygonal cross-section and are engaged in a polygonal hole in each cam and in holes of circular cross-section provided in the slide piece, each said sleeve presenting a flange which rests against the slide piece and engages its said driven shaft of corresponding polygonal cross-section with which it is fast in rotation.
Claim 6
Dependent Claim
23 words
Sail assembly as claimed in claim 1, wherein the mast and the cam shafts are each driven in rotation by a driving member.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-06-06 | 1986-12-06 | 1987-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-06-06 | 1990-12-06 | 1991-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-06-06 | 1994-12-06 | 1995-06-07 | $7700.00 | Window Closed / Lapsed |