Title:
【考案の名称】帆船
Document Type and Number:
Japanese Patent JPS5942798
Kind Code:
U
Abstract:
A sailboat has a rotatable mast having a pivot mast for holding a sail and a slat member broadening backward from a leading edge to have a streamline section of a wing section together with the pivot mast and arranged along the pivot mast. The mast is rotated to be fixed at a desired position. Not only the sail but also the slat member produces a lift. The production of vortex and exfoliation of laminar layer are suppressed. Reefing and folding of the sail is facilitated.
Inventors:
Kazuhiro Umeda
Application Number:
JP13838182U
Publication Date:
March 21, 1984
Filing Date:
September 14, 1982
Export Citation:
International Classes:
B63H9/04; B63B15/00; B63H9/10; (IPC1-7): B63H9/10
Domestic Patent References:
| JPS58128996A | 1983-08-01 |