Patent US4675359A successfully refreshed from Google Patents.
Patent US3626883A successfully refreshed from Google Patents.
US3626883A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sailing vessel with the luff of the mainsail clear of the mast
Assignee: Individual
•
Filing: 1969-11-10
•
Granted: 1971-12-14
•
Expires: 1989-11-10
Abstract
Abstract A sailing vessel in which the mainsail luff is set on a different plane than the mast to avoid wind turbulence aft of a supporting mast. A track is secured athwartship just aft of the mast and the tack of the mainsail moves along the track. The luff of the mainsail is sparless so as not to interfere with the airfoil.
Inventors
- 👤 Daivd W Ellis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:17
CPC Classifications
B; B63; B63H; B63H9/00; B63H9/04; B63H9/08; B63H9/10
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
91 words
A sailing vessel comprising a hull, a mainsail having a head, a tack, and a sparless flexible luff extending from the head to the tack, means to tension the luff and support the head above the hull, a track extending laterally of the vessel, means to hold the tack to the track and move the tack to a position laterally of the support for the head to expose the luff to the windward side of the vessel and in a different plane than that of the means to support the head.
Claim 2
Dependent Claim
91 words
A sailing vessel comprising a hull, a mainsail having a head, a tack, and a sparless flexible luff extending from the head to the tack, means to tension the luff and support the head above the hull, a track extending laterally of the vessel, means to hold the tack to the track and move the tack to a position laterally of the support for the head to expose the luff to the windward side of the vessel and in a different plane than that of the means to support the head.
Claim 3
Dependent Claim
14 words
A sailing vessel as in claim 1 wherein there are a plurality of sails.
Claim 4
Dependent Claim
53 words
A sailing vessel as in claim 1 wherein there are a plurality of sails, a track for at least one of the sails, means to secure the tack of one sail to said track to incline it oppositely to the plane of the other sail with reference to the support for the head.
Claim 5
Dependent Claim
37 words
A sailing vessel as in claim 1 wherein there are a plurality of sails means to oppositely incline the sails to the plane of the support for the head, said means being adjustable lengthwise of the vessel.
Claim 6
Dependent Claim
44 words
A sailing vessel as in claim 1 wherein there are a plurality of sails inclined oppositely to the plane of the support for the head, each with both clews and tacks equipped with track and hauling tackle to adjust them laterally of the vessel.
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) | 1974-12-13 | 1975-06-14 | 1975-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-13 | 1979-06-14 | 1979-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-13 | 1983-06-14 | 1983-12-14 | $7700.00 | Window Closed / Lapsed |