Ships – Steering mechanism – Fluid pressure
Patent
1998-07-02
2000-12-12
Morano, S. Joseph
Ships
Steering mechanism
Fluid pressure
B63H 2546
Patent
active
061583715
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention concerns a hydraulic system for the control of boats, ships and crafts in general, working on the principle of action and reaction.
BACKGROUND OF THE INVENTION
It is known that the systems used until now on ships and boats for facilitating lateral movements during maneuvers in small spaces or with side winds, are essentially based on maneuver propellers installer in fitting housings arranged below the vessel floating line.
Moreover, said systems are a great safety concern due to the presence of large openings below the floating line that complicate maintenance and hydrodynamic advancement; furthermore, past systems have the disadvantage of requiring expensive fitting onto the hulls of ships that use them, for e.g., the insertion of pass-through tubular structures of great diameter that may contain transversal propellers.
Furthermore, on some boats--like sailing boats or some motor-boats--which have small head wheels, such systems can not be applied.
It is the aim of the present invention to make easy the maneuvers of ships and boats of all kinds, making use of a system based on the principle of action and reaction, determined by a jet of a fluid generated by pumps housed in the hull and that comes out under pressure from suitable nozzles. The nozzles may be internally shaped like a venturi pipe or similar shape so as to obtain, in the outlet points of the fluid and due to fitting throttlings, a direct force in the opposite direction of the discharged fluid and proportional to the pressure and to the volume of pumped fluid.
Consequently, the present invention provides the presence of nozzles on opposed bulwarks at the end of the stem that will determine, due to the discharge of the fluid under pressure above the sea level, the reactive displacement of the head of the boat and therefore the possibility of immediately performing right or left turns, according to the employed nozzle.
In a similar way, rotations around the barycentre will be allowed with the help of corresponding nozzles arranged on opposed bulwarks near the stem; the hydraulic reaction operation of the two nozzles arranged on the same bulwark will determine the parallel motion of the entire craft for maneuvering along a warf or for performing a different maneuver.
The advantages of the system according to the present invention are evident.
The system according to the present invention will be described more in detail hereinbelow relating to the enclosed drawings, in which an embodiment is shown.
DESCRIPTION OF THE DRAWINGS
FIG. 1 shows a scheme of a hydraulic system for the control of boats, ships and crafts in general, installed onto a boat.
FIG. 2 shows a lateral view of a possible localization of the nozzles on a boat.
FIG. 3 shows in detail, the internal structure of an ejector nozzle.
In FIG. 4, the arrows show possible maneuvers of hulls provided with the system according to the present invention.
FIGS. 5 and 6 show, in a respective axonometric view and transversal section, a variant of an ejector nozzle with internal throttling.
FIGS. 7 and 8 show a scheme of two variants of pressing or pulling ejector nozzles, which are particularly fitting on boats used for trawling.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
The enclosed figures show a hydraulic system for the control of boats, ships and crafts in general, comprising two or more front nozzles 1, 2 and/or two or more back nozzles 3,4, with dimensions proportioned to those of the boat N and to the capacity of the pump(s) 5 housed in the hull and fixed to the bulwarks in determined points by means of pass-through holes. The flow to the nozzle(s) is controlled by means of valve(s) 6 operated with mechanical, hydraulic, or electrical systems, or by engines or other means.
The hydraulic system also comprises of one or more pump(s) 5 housed in the hull N, powered by the engine of the boat by means of electromagnetic pulleys, hydraulic or electric transmissions, an autonomous motor energy source of any kind, or by other means. The
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patent: 4265192 (1981-05-01), Dunn
patent: 4807552 (1989-02-01), Fowler
NN.: "Omnithruster Eases Vessel Control," Offshore (Inc. The Oilman), vol. 37, No. 5, May 1997, Tulsa, U.S., pp. 388-392, XP002058685.
Shipping World and Shipbuilder, vol. 152, No. 3723, Dec. 17, 1964, London, England, p. 756 XP002058684, Kawasaki Jet Truster (Kawasaki Dockyard).
NN.: "Bow Jet Thrust System," Motorship, vol. 48, No. 569, Dec., 1967, London, England, p. 394 XP002058686.
Morano S. Joseph
Muldoon Patrick Craig
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