B - Operations – Transporting – 63 – H
Patent
B - Operations, Transporting
63
H
114/12
B63H 9/00 (2006.01) B63B 15/00 (2006.01) B63H 9/10 (2006.01)
Patent
CA 1240563
A B S T R A C T This invention relates to an improved arrangement for mounting a sail on a rotatable mast. The rotatable mast is provided with an upper pair of yard arms pivotally connected to an upper portion of the mast and a lower pair of yard arms pivotally connected to a lower portion of the mast. Each of the upper and lower pairs of yard arms are movable between an open position in which the yard arms are substantially in alignment and a closed position in which the yard arms are folded to be substantially parallel to the mast. An essentially rectangular sail connected to each of the yard arms is compactly folded when the yard arms are in folded position and a sleeve which preferably is stored at the base of the mast slides over the yard arms and sail when the yard arms and sail are in folded position. This arrangement provides a simple, rugged and practical arrangement which is suitable for small sail boats and larger vessels. It can be used as the sole means of propulsion or as an auxiliary source of power.
474677
Gowling Lafleur Henderson Llp
Prior David L.
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