Ships – Watercraft with means used in providing sailpower – Having specifically defined hull shape
Patent
1983-12-13
1986-09-23
Barefoot, Galen
Ships
Watercraft with means used in providing sailpower
Having specifically defined hull shape
114103, B63B 3500
Patent
active
046128689
ABSTRACT:
A sail and mast assembly for a wind-driven craft, such as a sail board, includes a main sail section and one or more removable sail sections attachable to the foot of the main sail section, thereby to provide a sail with adjustable sail area to suit varying wind conditions. The assembly also includes an adjustable-height mast, to which the sail is operatively attached, whereby the mast height can be changed, as removable sail sections are addded or removed, to maintain a desired proportion between the mast height and the length of the leading edge or luff of the sail. In a first embodiment, the mast height is adjustable by a telescoping mechanism, while in a second embodiment, the mast height is changed by attaching or removing mast segments to the bottom of the mast.
REFERENCES:
patent: 8164 (1851-06-01), Brown
patent: 95243 (1869-09-01), Mair
patent: 843822 (1907-02-01), Jennings
patent: 2247219 (1941-06-01), Childs
patent: 3974791 (1976-08-01), Haarstick et al.
Barefoot Galen
Sotelo Jesus D.
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