Ships – Sail or control means therefor – Including means to orient sail
Reexamination Certificate
2000-06-19
2001-02-20
Sotelo, Jesus D. (Department: 3617)
Ships
Sail or control means therefor
Including means to orient sail
C114S039110
Reexamination Certificate
active
06189472
ABSTRACT:
TECHNICAL FIELD OF THE INVENTION
This invention relates to rigging for sailing craft. Normally the invention will be applied to watercraft although it could also be applied to land yachts and the like. The craft may be single or multi-hulled.
BACKGROUND
In conventional rigging the mainsail is secured along one vertical edge (the luff) to a mast which is mounted on the hull of the craft. A lower edge of the sail (the foot) is secured to a boom which is pivotally coupled to the lower end of the mast to swing to port and starboard. Movement of the boom is controlled by a mainsheet (rope) running between the boom and the deck.
U.S. Pat. No. 4,799,443 proposes a sailing boat in which the mainsail is mounted between a luff boom and a foot boom. The luff boom is attached to the top of the mast by a pivotal fitting that allows the luff boom to tilt from vertical. A pair of sheets (ropes) run between the foot boom and the hull to provide control over the tilting of the sail. The mast may be telescopic.
The present invention seeks to provide a new and inventive form of tilting sail arrangement.
SUMMARY OF THE INVENTION
The present invention proposes a sailing craft comprising:
at least one hull;
a stub mast upstanding from the hull or hulls;
a sail having a luff edge and a foot edge;
a luff boom to which the luff of the sail is secured;
a foot boom to which the foot of the sail is secured and which is connected to the lower end of the luff boom; and
a pivotal fitting connecting the luff boom to the stub mast;
characterised by a rigid swing boom which is pivotally connected between the foot boom and the hull or hulls or the stub mast.
The swing boom is preferably connected part-way along the foot boom.
REFERENCES:
patent: 1670936 (1928-05-01), McIntyre et al.
patent: 3090340 (1963-05-01), McCutchen et al.
patent: 4799443 (1989-01-01), Vogel
patent: 4864949 (1989-09-01), Olsen
Dorman Ira S.
Sotelo Jesus D.
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