Ships – Displacement-type hull – Multiple hulls
Patent
1986-08-13
1988-09-20
Basinger, Sherman D.
Ships
Displacement-type hull
Multiple hulls
114 391, 114123, B63B 100
Patent
active
047717165
DESCRIPTION:
BRIEF SUMMARY
The present invention concerns boats of the pleasure craft type, more particularly sailboats, for example, trimarans.
DESCRIPTION OF THE BACKGROUND ART
Sailing is not just a leisure activity, but also a sport for the majority of its practitioners. For high-level sporting activity in the strict sense, there are of course many high-performance boats reserved for the elite. In fact, those boats are very expensive and thus, in principle, accessible only to very few people. In addition to these high-performance boats, there are not only sailboats which make it possible to gain experience in sailing techniques, but also to move about. Between these two categories there is an intermediate category where initiates can practice their leisure activity and also obtain satisfactory performances. They need to possess boats which provide relatively high performance, but unfortunately, the price that they must pay for such a boat is prohibitive, which means that most of them are unable to practice their favorite sport.
SUMMARY OF THE INVENTION
The aim of the present invention is thus to provide a structure for a sailboat, like a trimaran, providing satisfactory sporting performances while being of very simple design permitting easy transport, and convenient dismantling and reassembly. This structure, because of its advantages, makes possible a production cost significantly lower than that of boats having or capable of attaining comparable performance.
More exactly, the aim of the present invention is a boat structure comprising an elongated central body, two pontoons, two longitudinal lateral arms of which one of their extremities is made integral with said body by the first fastening means and the second and third linking means of the two other extremities of said arms with respectively the two said pontoons. A boat with a structure of this type has been described in patent GB No. 922.065 (Welman).
The boat structure in accordance with the invention is characterized by the fact that said body is composed of a beam comprising two parts abutting by a junction surface, a first relatively short part substantially in the shape of the arc of a circle with a first curve value R1, a second part longer than the first part, substantially in the shape of the arc of a circle with a second value R2 with a radius of curvature significantly greater than the first value R1.
In accordance with another characteristic of the invention, the structure is also characterized by the fact that the two said arms are composed of a curved shaft situated in a first plane substantially perpendicular to a second plane containing said beam, said first plane passing in the vicinity of said junction surface of the two said parts, the lengths of the two parts of said shaft situated on either side of said second plane being substantially equal, these two said parts of said shaft comprising the two said arms.
In accordance with another characteristic of the present invention, said structure is also characterized by the fact that it includes a mast step pivoting in said second plane around an axis situated substantially in proximity to said shaft and to the locking means of said mast step in a position determined in relation to said beam.
In accordance with another characteristic of the present invention, said structure is also characterized by the fact that said pontoons are constituted by a first body comprising at least one median portion substantially cylindrical of revolution, a sleeve situated on said median portion with a cross-section substantially complementary to that of said median portion, in such a way as to be able to pivot around that median portion, a foil mounted to operate in conjunction with said sleeve and the means to control the pivoting of said sleeve.
In accordance with another characteristic of the present invention, said structure is characterized by the fact that it comprises, in association with at least one of said elongated central bodies and two arms, preplaced means for attaching navigation element and at least one navi
REFERENCES:
patent: 2238464 (1941-04-01), Fletcher
patent: 2351542 (1944-06-01), Paull
patent: 3112725 (1963-12-01), Malrose
Basinger Sherman D.
Sotelo Jesus D.
LandOfFree
Pleasure boat structure does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Pleasure boat structure, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pleasure boat structure will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1742463