Ships – Watercraft with means used in providing sailpower – Having specifically defined hull shape
Patent
1984-10-31
1987-03-24
Basinger, Sherman D.
Ships
Watercraft with means used in providing sailpower
Having specifically defined hull shape
114 61, 114121, 114125, B63H 904
Patent
active
046516662
ABSTRACT:
The invention is a water lifter for use on knocked down multi-hull sailboats. The water lifter comprises a water bucket attached to one or more bucket lines which in turn are attached to one or more down pulleys. The down pulleys are in turn connected by pulley ropes to one or more top pulleys to provide sufficient mechanical advantage for a small single person to lift the water bucket out of the water. The top pulleys are attached to the uppermost hull of the knocked down multi-hull craft. On small sailboats, a single small person then braces his feet against the down hull, and positions his back against the water bucket, and pushes the water bucket as far as he or she can from the down hull, using his or her strong leg and back muscles. The weight of the water in the water bucket, as much as 400 pounds or more, combined with the now extended moment arm provide the necessary torque to lift the mast of the knocked down sailboat out of the water and rotate the sailboat so that it will come to rest upright on all of its hulls, in quick, easy, and very safe manner. For larger multi-hull sailboats, a boom arrangement with a winch affixed at the base of the mast assists in lifting a larger water bucket with more water, thus a greater weight, a greater distance from the down hull, thus overcoming the weight of the heavier mast, sails and hulls.
REFERENCES:
patent: 3464379 (1969-09-01), Lawson
patent: 3547165 (1970-12-01), Butterworth
patent: 3782413 (1974-01-01), Chacko
patent: 3865061 (1975-02-01), Newman
patent: 4117795 (1978-10-01), Ruiz
patent: 4441445 (1984-04-01), DeWeck
patent: 4516516 (1985-05-01), Methven
patent: 4516518 (1985-05-01), Cate
Avila Stephen P.
Basinger Sherman D.
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