Halyard rig for roll-furling mainsail
US4057023A · kind A · utility
4Cited by
4References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 30, 1976 |
| Grant date | Nov 8, 1977 |
| Priority date | — |
| Expiry date | Aug 30, 1996 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB63H9/1035
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
In the mainsail roll-furling system disclosed herein, the mainsail is roller-furled inside a tubular compartment in the mast itself, the sail being drawn out through an aft-facing slot in the mast. A swivel is utilized between the halyard and the luff of the mainsail and a guide is provided on the halyard side of the swivel which both positively prevents rotation of the halyard during furling of the sail and positions the upper end of the sail luff essentially in the middle of the sail storage compartment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.