Patent US4196687A successfully refreshed from Google Patents.
US4196687A
Expired / Lapsed
US
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Roller reefing system
Assignee: Individual
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Filing: 1978-02-03
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Granted: 1980-04-08
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Expires: 1998-02-03
Abstract
Abstract A roller reefing system for reefing any sail (e.g. main, mizzen, staysail, jib or genoa) of a sailboat is disclosed which includes an elongated insert element operatively connected to the luff or leading edge of the sail, and having a predetermined continuously contoured configuration or variable cross-section along its length, to accommodate sail fullness during furling and unfurling operations.
Inventors
- 👤 Richard C. Newick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:45
CPC Classifications
B; B63; B63H; B63H9/00; B63H9/04; B63H9/08; B63H9/10; B63H9/1021; B63H9/1028
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
95 words
Roller sail reefing apparatus adapted to be mounted in a luff rope groove of a multi grooved roller furling stay comprising a one piece elongated insert element having an elongated rib formed thereon adapted to be received in the luff rope groove of a grooved roller furling stay and a section secured to said rib having a semi-circular shape in cross-section which, in opertion, varies the effective cross-section of the furling stay along its length when the sail is furled, said section extending beyond the periphery of the stay in which the insert is mounted.
Claim 2
Dependent Claim
95 words
Roller sail reefing apparatus adapted to be mounted in a luff rope groove of a multi grooved roller furling stay comprising a one piece elongated insert element having an elongated rib formed thereon adapted to be received in the luff rope groove of a grooved roller furling stay and a section secured to said rib having a semi-circular shape in cross-section which, in opertion, varies the effective cross-section of the furling stay along its length when the sail is furled, said section extending beyond the periphery of the stay in which the insert is mounted.
Claim 3
Dependent Claim
33 words
Roller sail reefing apparatus as defined in claim 1 wherein said section secured to said rib is tapered along its length, having a central relatively large cross-section and smaller cross-sections adjacent its ends.
Claim 4
Dependent Claim
52 words
Roller sail reefing apparatus as defined in claim 1 wherein said section secured to said rib has a substantially uniform cross-section and has an elongated hollow passage formed therein, said section being formed of a resilient material whereby the cross-section thereof will vary in response to pressure exerted thereon adjacent said passage.
Claim 5
Dependent Claim
82 words
Roller sail reefing apparatus adapted to be mounted in a luff rope groove of a multi grooved roller furling stay comprising an elongated one-piece insert element having an elongated rib formed thereon adapted to be received in the luff rope groove of a grooved roller furling stay and variably contoured surface portion secured to said rib and extending beyond the periphery of the stay in which the insert is mounted, thereby to vary the effective cross-section of the stay along its length.
Claim 6
Dependent Claim
82 words
Roller sail reefing apparatus adapted to be mounted in a luff rope groove of a multi grooved roller furling stay comprising an elongated one-piece insert element having an elongated rib formed thereon adapted to be received in the luff rope groove of a grooved roller furling stay and variably contoured surface portion secured to said rib and extending beyond the periphery of the stay in which the insert is mounted, thereby to vary the effective cross-section of the stay along its length.
Claim 7
Dependent Claim
41 words
Roller sail reefing apparatus as defined in claim 4 wherein said contoured surface portion is generally semi-circular in cross-section and has a radius which decreases from a maximum adjacent the central portion of the insert to a minimum adjacent its ends.
Claim 8
Dependent Claim
59 words
Roller sail reefing apparatus as defined in claim 4 wherein said contoured surface portion is generally semi-circular in cross-section and has an elongated hollow passage formed therein and closed at its opposite ends, said insert being formed of a resilient material whereby the cross-section of said contoured portion of the insert will vary in response to pressure exerted thereon.
References Cited (Backward Citations)
US3749043A
Cited
US3938460A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-04-08 | 1983-10-08 | 1984-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-04-08 | 1987-10-08 | 1988-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-04-08 | 1991-10-08 | 1992-04-08 | $7700.00 | Window Closed / Lapsed |