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WO2007072185B1 - A propulsion system for a watercraft - Google Patents

A propulsion system for a watercraft

Info

Publication number
WO2007072185B1
WO2007072185B1 PCT/IB2006/003712 IB2006003712W WO2007072185B1 WO 2007072185 B1 WO2007072185 B1 WO 2007072185B1 IB 2006003712 W IB2006003712 W IB 2006003712W WO 2007072185 B1 WO2007072185 B1 WO 2007072185B1
Authority
WO
WIPO (PCT)
Prior art keywords
propulsion
propulsion system
steering
propeller
rudders
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/IB2006/003712
Other languages
French (fr)
Other versions
WO2007072185A2 (en
WO2007072185A3 (en
Inventor
Andrew Bruce Taylor
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
STELLENBOSCH AUTOMOTIVE ENGINEERING (PROPRIETARY)LIMITED
STELLENBOSCH AUTOMOTIVE ENGINE
Original Assignee
STELLENBOSCH AUTOMOTIVE ENGINEERING (PROPRIETARY)LIMITED
STELLENBOSCH AUTOMOTIVE ENGINE
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by STELLENBOSCH AUTOMOTIVE ENGINEERING (PROPRIETARY)LIMITED, STELLENBOSCH AUTOMOTIVE ENGINE filed Critical STELLENBOSCH AUTOMOTIVE ENGINEERING (PROPRIETARY)LIMITED
Publication of WO2007072185A2 publication Critical patent/WO2007072185A2/en
Publication of WO2007072185A3 publication Critical patent/WO2007072185A3/en
Publication of WO2007072185B1 publication Critical patent/WO2007072185B1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H1/00—Propulsive elements directly acting on water
    • B63H1/02—Propulsive elements directly acting on water of rotary type
    • B63H1/12—Propulsive elements directly acting on water of rotary type with rotation axis substantially in propulsive direction
    • B63H1/14—Propellers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H5/00—Arrangements on vessels of propulsion elements directly acting on water
    • B63H5/07—Arrangements on vessels of propulsion elements directly acting on water of propellers
    • B63H5/14—Arrangements on vessels of propulsion elements directly acting on water of propellers characterised by being mounted in non-rotating ducts or rings, e.g. adjustable for steering purpose
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H1/00—Propulsive elements directly acting on water
    • B63H1/02—Propulsive elements directly acting on water of rotary type
    • B63H1/12—Propulsive elements directly acting on water of rotary type with rotation axis substantially in propulsive direction
    • B63H1/14—Propellers
    • B63H1/18—Propellers with means for diminishing cavitation, e.g. supercavitation
    • B63H2001/185—Surfacing propellers, i.e. propellers specially adapted for operation at the water surface, with blades incompletely submerged, or piercing the water surface from above in the course of each revolution

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Gear Transmission (AREA)
  • Steering Devices For Bicycles And Motorcycles (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Abstract

A propulsion system (10) for a watercraft comprises a propeller (12), a drive (14) for driving the propeller, a mounting arrangement for mounting the propeller to the stern of the watercraft and a trim hydrofoil 18 which is disposed at a level lower than the propeller. The system (10) includes a steering sub-system (22) which includes a pair of spaced opposed rudders (24.1 and 24.2) which are located at opposite sides of the propeller (12). The sub-system includes a shroud (26) which extends over the propeller (12) between the rudders. The shroud is pivotally mounted to a mounting plate (19) forming part of the mounting arrangement, in an arrangement permitting pivoting of the steering sub-system and thereby the rudders about a vertical pivot axis to facilitate steering and also tilting forward Iy and rearward Iy to thereby alter the angle of attack of the hydrofoil (18).

Claims

AMENDED CLAIMS [received by the International Bureau on 14 September 2007 (14.09.07)]CLAIMS
1. A propulsion system for a watercraft, including:
propulsion means in the form of a surface-piercing propeller having an upper side and a lower side, which is operable to propel the watercraft along a body of water;
drive means for driving the propulsion means;
propulsion mounting means for mounting the propulsion means at the stern of the watercraft;
a steering sub-system which is mountable to the propulsion mounting means and which includes steering means for altering the direction of travel of the watercraft;
a trim hydrofoil which is disposed at a level operatively lower than the upper side of the propulsion means and which is integrated with the steering means; and
an integrated steering and trim control sub-system for tilting the steering means in a vertical plane for altering the angle of attack of the trim hydrofoil and for pivoting the steering means from side to side thereby to interfere with water moving relative to the watercraft for altering the direction of travel of the watercraft.
2. The propulsion systems as claimed in claim 1 , wherein the trim hydrofoil is disposed of aft of the propulsion means.
3. The propulsion system as claimed in claim 1 , wherein the trim hydrofoil is disposed fore of the propulsion means.
4. The propulsion system as claimed in claim 3, wherein the trim hydrofoil is disposed below the axis of rotation of the propeller.
5. The propulsion system as claimed in claim 4, which includes at least one auxiliary trim hydrofoil which is disposed aft of the propeller operatively above the axis of rotation of the propeller.
6. The propulsion system as claimed in claim 5, wherein the auxiliary trim hydrofoil is disposed at a height between the axis of rotation of the propeller and an upper tip of the propeller.
7. The propulsion system as claimed in any one of claims 1 to 6, wherein the steering means includes at least one rudder and steering mounting means for mounting the rudder to the propulsion mounting means, and rudder control means for controlling the movement of the rudder.
8. The propulsion system as claimed in claim 7, wherein the steering means includes a pair of spaced, opposed rudders which are each located at a different one of the opposite sides of the propeller.
9. The propulsion system as claimed in claim 8, wherein the trim hydrofoil is mounted to and extends between the rudders.
10. The propulsion system as claimed in claim 9, wherein the auxiliary trim hydrofoil is mounted to and extends between the rudders.
11. The propulsion system as claimed in any one of claims 8 to 10, which includes at least one additional auxiliary trim hydrofoil which is mounted to and extends laterally outwardly from one of the rudders.
12. The propulsion system as claimed in claim 11 , which includes two additional auxiliary trim hydrofoils wherein each additional auxiliary trim hydrofoil extends laterally outwardly from a different one of the rudders.
13. The propulsion system as claimed in any one of claims 8 to 12, wherein the steering sub-system includes a shroud which is disposed above the propeller and which extends between the rudders.
14. The propulsion system as claimed in claim 13, wherein the shroud is in the form of a convexly curved panel.
15. The propulsion system as claimed in claim 14, wherein the steering mounting means is hingedly mounted to the shroud, thereby permitting hinged displacement of the shroud and thereby the rudders relative to the watercraft.
16. The propulsion system as claimed in claim 15, wherein the steering mounting means is pivotally connected to the shroud in an arrangement permitting pivotal displacement of the shroud about a pivot axis, the control means being operable to control pivotal displacement of the shroud and thereby the rudders, in use
17. A watercraft having the propulsion system as claimed in any one of claims 1 to 16, mounted to the stern thereof.
AMENDED SHEET (ARTICLE 19)
PCT/IB2006/003712 2005-12-20 2006-12-20 A propulsion system for a watercraft Ceased WO2007072185A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA2005/10333 2005-12-20
ZA200510333 2005-12-20

Publications (3)

Publication Number Publication Date
WO2007072185A2 WO2007072185A2 (en) 2007-06-28
WO2007072185A3 WO2007072185A3 (en) 2007-10-04
WO2007072185B1 true WO2007072185B1 (en) 2007-11-29

Family

ID=38189026

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2006/003712 Ceased WO2007072185A2 (en) 2005-12-20 2006-12-20 A propulsion system for a watercraft

Country Status (1)

Country Link
WO (1) WO2007072185A2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9260161B2 (en) 2011-11-12 2016-02-16 Malibu Boats, Llc Surf wake system for a watercraft
US9580147B2 (en) 2011-09-16 2017-02-28 Malibu Boats, Llc Surf wake system for a watercraft
US11851136B2 (en) 2019-04-05 2023-12-26 Malibu Boats, Llc Water sports boat with foil displacement system

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013040576A1 (en) 2011-09-16 2013-03-21 Malibu Boats, Llc Surf wake system and method for a watercraft
US8578873B2 (en) 2011-09-16 2013-11-12 Malibu Boats, Llc Surf wake system for a watercraft
US9969464B1 (en) 2013-03-15 2018-05-15 Correct Craft Ip Holdings, Llc Boat with reconfigurable running surface for wake adjustment
US9611006B1 (en) 2013-03-15 2017-04-04 Correct Craft Ip Holdings, Llc Boat with reconfigurable running surface for wake adjustment
US8833286B1 (en) 2013-10-11 2014-09-16 Mastercraft Boat Company, Llc Wake-modifying device for a boat
US10358189B2 (en) 2013-10-11 2019-07-23 Mastercraft Boat Company, Llc Wake-modifying device for a boat
US9802684B2 (en) 2013-10-11 2017-10-31 Mastercraft Boat Company, Llc Wake-modifying device for a boat
US9669903B2 (en) 2014-02-04 2017-06-06 Malibu Boats, Llc Methods and apparatus for facilitating watercraft planing
US9891620B2 (en) 2015-07-15 2018-02-13 Malibu Boats, Llc Control systems for water-sports watercraft
US10597118B2 (en) 2016-09-12 2020-03-24 Kai Concepts, LLC Watercraft device with hydrofoil and electric propeller system
US12246811B2 (en) 2020-04-22 2025-03-11 Kai Concepts, LLC Watercraft device with a handheld controller
US10946939B1 (en) 2020-04-22 2021-03-16 Kai Concepts, LLC Watercraft having a waterproof container and a waterproof electrical connector
US11897583B2 (en) 2020-04-22 2024-02-13 Kai Concepts, LLC Watercraft device with hydrofoil and electric propulsion system
US11932356B1 (en) 2020-08-24 2024-03-19 Malibu Boats, Llc Powered swim platform
WO2022066855A1 (en) 2020-09-23 2022-03-31 Mastercraft Boat Company, Llc Boats, methods, and devices used to generate a desired wake
KR102402889B1 (en) * 2020-11-20 2022-05-27 한국생산기술연구원 An underwater sterilization robot based on 3d environmental recognition
GR1011089B (en) * 2021-03-17 2025-12-11 Σωτηριος Κωνσταντινου Φιλιππου Vessel's oscillation damping arrangement
US11485457B1 (en) 2021-06-14 2022-11-01 Kai Concepts, LLC Hydrojet propulsion system
US11878775B2 (en) 2021-07-13 2024-01-23 Kai Concepts, LLC Leash system and methods of use

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3099240A (en) * 1961-05-24 1963-07-30 Jr Charles A Montague Boat construction
US4058077A (en) * 1974-12-23 1977-11-15 Johansson Sten E Power boats with hydrodynamic lifting devices
SE8402792L (en) * 1984-05-23 1985-11-24 Kamewa Ab thruster
EP0250457A1 (en) * 1985-10-08 1988-01-07 Thompson Marine Propulsion Systems, Inc. Outboard boat propulsion installation
JP3318901B2 (en) * 1992-09-18 2002-08-26 三信工業株式会社 Water injection propulsion device
GB9612920D0 (en) * 1996-06-20 1996-08-21 Belmont Michael R Jet lifter
US5704308A (en) * 1996-08-15 1998-01-06 Anderson; Carl Pivotal afterplane having a motor positioned thereon
US5860384A (en) * 1997-12-02 1999-01-19 Castillo; James D. Wake control apparatus
US6397772B1 (en) * 2000-04-06 2002-06-04 Dale Christensen Boat motor trolling attachment

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9580147B2 (en) 2011-09-16 2017-02-28 Malibu Boats, Llc Surf wake system for a watercraft
US9260161B2 (en) 2011-11-12 2016-02-16 Malibu Boats, Llc Surf wake system for a watercraft
US9334022B2 (en) 2011-11-12 2016-05-10 Malibu Boats, Llc Surf wake system for a watercraft
US11851136B2 (en) 2019-04-05 2023-12-26 Malibu Boats, Llc Water sports boat with foil displacement system

Also Published As

Publication number Publication date
WO2007072185A2 (en) 2007-06-28
WO2007072185A3 (en) 2007-10-04

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