Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
  • B63H—MARINE PROPULSION OR STEERING
  • B63H11/00—Marine propulsion by water jets
  • B63H11/02—Marine propulsion by water jets the propulsive medium being ambient water
  • B63H11/04—Marine propulsion by water jets the propulsive medium being ambient water by means of pumps
  • B63H11/08—Marine propulsion by water jets the propulsive medium being ambient water by means of pumps of rotary type
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
  • B63H—MARINE PROPULSION OR STEERING
  • B63H23/00—Transmitting power from propulsion power plant to propulsive elements
  • B63H23/02—Transmitting power from propulsion power plant to propulsive elements with mechanical gearing
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
  • B63H—MARINE PROPULSION OR STEERING
  • B63H23/00—Transmitting power from propulsion power plant to propulsive elements
  • B63H2023/005—Transmitting power from propulsion power plant to propulsive elements using a drive acting on the periphery of a rotating propulsive element, e.g. on a dented circumferential ring on a propeller, or a propeller acting as rotor of an electric motor

Definitions

• the present invention refers to a high speed boat in which is used a pump driven by a driving motor constituted by for instance a petrol engine or a diesel engine.
• the pump pumps up water and generates a jet which can be directed and given different pressures, whereby such a boat can be propelled at a high velocity.
• Known boats has the driving motor directly coupled to the shaft of the pump and this has among other things the drawback that it becomes necessary to sometimes use a gear-box between the motor and the pump shaft. Further the shaft that drives the pump gives rise to certain flow problems.
• the object of the present invention is to create a high speed boat of aforementioned type in which a gear-box can be dispensed with and where the pump can be operated conti ⁇ nuously.
• this is made possible by the pump shaft being arranged parallel to the driving shaft of the engine and these two shafts located at a distance from each other.
• a driving belt is applied, which is placed over the external peripheral ring of the pump wheel.
• the peripheral ring of the pump is applied outside the stern of the boat and the same applies to the free end of the shaft of the driving motor so that the driving arrangement of pump ring, driving belt and engine driving shaft are located completely outside of the boat and form a single unit.
• the pump ring, the driving belt and driving shaft wholly or partly are encapsulated in a protection housing. Further features concerning the present invention appear from the subsequent claims .
• Figure 2 shows the same boat seen from above
• Figure 3 shows the stern of the boat according to the preceeding figures
• Figure 4 shows an encapsulated driving arrangement
• Figure 5 shows an illustration of a pump with a control nozzle for an emitted water jet.
• the designation 8 refers to a high speed boat which contains a driving motor 10 and drives a pump shaft 11 with an adjustable outlet nozzle 15.
• the boat is arranged with a water intake 9 that provides the pump with water.
• a driving belt 13 is placed over the peripheral ring of the pump and the driving shaft 14 of the driving motor 10.
• the pump ring, the driving belt and the driving shaft 14 of the engine 10 are located outside the stern of the boat 8.
• the speed of the boat is con- trolled by the pump pressure.
• the designation 14A refers to a coupling that joins the outgoing shaft of the driving motor 10 to a driving unit which constitutes the continuation of the shaft over which the driving belt 7 is going to be placed.
• the driving belt 7 runs further about the external circumference of the pump wheel about a ring which is opposite to the pump wheel hub and between which ring and hub the pump blades are arranged.
• the nozzle is also shown which is utili ⁇ zed for directing the water jet.
• the nozzle is consequently pivotable partly about a horizontal axis, partly about an axis perpendicular to said axis.

Landscapes

• Chemical & Material Sciences (AREA)
• Engineering & Computer Science (AREA)
• Combustion & Propulsion (AREA)
• Mechanical Engineering (AREA)
• Ocean & Marine Engineering (AREA)
• Structures Of Non-Positive Displacement Pumps (AREA)
• Rotary Pumps (AREA)
• Jet Pumps And Other Pumps (AREA)

Priority Applications (1)

Applications Claiming Priority (2)

Publications (1)

Family

ID=20390148

Family Applications (1)

Country Status (2)

Cited By (2)

Citations (2)

• 1993
  • 1993-06-03 SE SE9301896A patent/SE501365C2/sv unknown
• 1994
  • 1994-06-03 WO PCT/SE1994/000539 patent/WO1994029169A1/en active Application Filing

Patent Citations (2)

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