Roll-furling mainsail
US4059063A · kind A · utility
12Cited by
6References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 30, 1976 |
| Grant date | Nov 22, 1977 |
| Priority date | — |
| Expiry date | Aug 30, 1996 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB63H2009/088
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
In the roll-furling mainsail arrangement disclosed herein, the clew of the sail is trimmed to a boom by means of a car which is freely slidable along the boom. An outhaul line rigged to pull aft from the tip of the boom passes forward through a block on the car, thence through a block at the clew of the sail and then back to the car where it is secured. The balance of forces on the car automatically bias it to a position providing an advantageous drawing angle for shaping the mainsail, even at varying stages of partial furling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.