Roll-reefing jib sail
US4248281A · kind A · utility
18Cited by
6References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 18, 1979 |
| Grant date | Feb 3, 1981 |
| Priority date | — |
| Expiry date | Jun 18, 1999 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB63H9/1028
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
In the roll-reefing job sail system disclosed herein, a luff foil, grooved to receive a bead on the luff edge of a jib, is employed to roll up the main portion of a jib sail. The head and tack, however, are not fixedly attached to the luff foil but, rather, are connected to attachment points which are journaled and freely rotatable with respect to the luff foil. Thus, both can freely lag in rotation relative to the central portion of the jib which wraps around the luff foil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.