Ships – Hull or hull adjunct employing fluid dynamic forces to... – Having hydrofoil
Patent
1990-05-10
1993-01-19
Basinger, Sherman
Ships
Hull or hull adjunct employing fluid dynamic forces to...
Having hydrofoil
114121, 114143, B63B 3573
Patent
active
051799065
DESCRIPTION:
BRIEF SUMMARY
CROSS REFERENCE TO RELATED APPLICATION
This application is a national phase of PCT/DE88/00576 filed Sep. 16, 1988 and based upon German national application P 37 38 617.4 filed Nov. 13, 1987 under the International Convention.
FIELD OF THE INVENTION
The invention relates to a watercraft with a float and a passenger stand or the like attached to the float, whereby the passenger stand is hinged by means of stanchions, whose hinge axes are mutually coaxial and axially parallel with respect to the propulsion direction of the watercraft and the stanchions are articulately linked to the passenger stand via height-adjustable connection elements linked to the passenger stand, whereby the length-adjustable connection elements are telescopic stanchions with hinge axes running parallel to the hinge axes of the stanchions, whereby further the length-adjustable stanchions can be controlled through a positioning drive, which detects the relative inclination of the position of the passenger stand and translates it into control signals in order to change the length of the stanchions, so that the passenger stand remains in an essentially vertical position.
BACKGROUND OF THE INVENTION
A watercraft of the aforedescribed type is known from DE 35 43 140 A1.
This watercraft, namely a boat, has to have a sufficient width in order to achieve travel stability. A very slim design of the floats with a relatively tall superstructure is not possible in this case, since the watercraft would be unstable and prone to capsizing.
In earlier systems of this type, the passenger stand is decoupled from the floating body (float body), so that the passenger stand, i.e. a platform for aircraft, does not necessarily have to follow the motions of the floating body produced by waves and wind, but can be kept independently in a horizontal position.
However, in this case, as a result of the large float which is used, only relatively low speeds of the watercraft can be reached in spite of high energy expenditure.
OBJECT OF THE INVENTION
It is the object of the invention to create a watercraft which can carry a tall superstructure in spite of a slim and narrow configuration and which can still be capsize-proof.
SUMMARY OF THE INVENTION
According to the invention, a ballast is attached by means of a support frame to the float, the passenger stand is articulately linked to the support frame via stanchions, and laterally on both sides of the support frame and perpendicularly to its longitudinal direction rigid support arms are provided, upon which the passenger stand is supported via length-adjustable connection elements.
Because of this construction, there is at least partial decoupling of the float and the passenger stand, so that the passenger stand does not necessarily have to follow the lateral movements of the float. Furthermore, the passenger stand can preserve its ideal position due to the length-adjustable connection elements resting against the stanchions, by correspondingly lengthening or shortening of the connection elements, independently of the relative position of the ballast with respect to the float. Hence, it is only necessary to provide a single, trim and narrow float or an assembly composed of several such trim and narrow floats arranged coaxially with respect to each other. This can result in a pendulum-like displacement of the buoyancy forces and the stabilizing forces sidewards to the left or to the right is achieved. The watercraft practically comprises a lower boat and an upper boat. The lower boat consists of the slim float and a ballast readily attached to its bottom. The upper boat located on top can exert a pressure on the sides of the lower boat through the length-adjustable lateral stanchions and the support frame, forcing the lower boat to move laterally.
Because of the resulting torque of the lower boat, the upper boat is correspondingly laterally supported. During the pendulum-like motion created by waves, the float can swing to one side and to the other.
Because of the trim shape of the float, it is possible
REFERENCES:
patent: Re27261 (1971-12-01), Bromell et al.
patent: 2286350 (1942-06-01), Drake
patent: 3483844 (1969-12-01), Trantwein
patent: 3791335 (1974-02-01), Del Vecchio
patent: 3807333 (1974-04-01), Ross
Kattwinkel Hans H.
Kattwinkel Marcus
Basinger Sherman
Dubno Herbert
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