| 摘要 |
PCT No. PCT/FI94/00361 Sec. 371 Date Feb. 20, 1996 Sec. 102(e) Date Feb. 20, 1996 PCT Filed Aug. 19, 1994 PCT Pub. No. WO95/05973 PCT Pub. Date Mar. 2, 1995A handheld wing sail comprises a sailcloth supported on frame members. The frame members comprise two mast tubes positioned in a V shape defining a nose angle and opposite respective tips. A boom is located between the mast tubes, the boom being curved at the symmetry plane of the wing sail and connected to each mast tube by each supporting tubes, each fastened to the boom at one end by a connection member and fastened at the opposite end to the respective mast tubes. A traverse tube joins the mast tubes together and is fastened to the mast tubes by connection pieces. The mast tubes and the boom are connected to each other by a nose link, which comprises a threadlike connection member made of flexible but substantially non-stretchable material for making it possible to change the nose angle and to fold the mast tubes toward the boom, whereby to bring the wing sail into a folded position for turning the mast tubes and the boom freely in different directions when the wing sail is in the folded position and, thus, ready for transport. The tips of the mast tubes are at tips of the sailcloth and have flexible antenna portions for keeping the wing sail taut during sailing. |
