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WO1997038895A1 - Quille amelioree pour bateau - Google Patents

Quille amelioree pour bateau Download PDF

Info

Publication number
WO1997038895A1
WO1997038895A1 PCT/AU1997/000230 AU9700230W WO9738895A1 WO 1997038895 A1 WO1997038895 A1 WO 1997038895A1 AU 9700230 W AU9700230 W AU 9700230W WO 9738895 A1 WO9738895 A1 WO 9738895A1
Authority
WO
WIPO (PCT)
Prior art keywords
keel
ofthe
craft according
assembly
hull
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/AU1997/000230
Other languages
English (en)
Inventor
Paul Vincent Ladd
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB9828791A priority Critical patent/GB2333067B/en
Priority to AU24987/97A priority patent/AU708693B2/en
Publication of WO1997038895A1 publication Critical patent/WO1997038895A1/fr
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
    • B63H25/00—Steering; Slowing-down otherwise than by use of propulsive elements; Dynamic anchoring, i.e. positioning vessels by means of main or auxiliary propulsive elements
    • B63H25/06—Steering by rudders
    • B63H25/38—Rudders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B41/00—Drop keels, e.g. centre boards or side boards ; Collapsible keels, or the like, e.g. telescopically; Longitudinally split hinged keels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B2241/00—Design characteristics
    • B63B2241/02—Design characterised by particular shapes
    • B63B2241/10—Design characterised by particular shapes by particular three dimensional shapes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H25/00—Steering; Slowing-down otherwise than by use of propulsive elements; Dynamic anchoring, i.e. positioning vessels by means of main or auxiliary propulsive elements
    • B63H25/06—Steering by rudders
    • B63H2025/063—Arrangements of rudders forward of the propeller position, e.g. of backing rudders; Arrangements of rudders on the forebody of the hull; Steering gear therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H25/00—Steering; Slowing-down otherwise than by use of propulsive elements; Dynamic anchoring, i.e. positioning vessels by means of main or auxiliary propulsive elements
    • B63H25/06—Steering by rudders
    • B63H2025/066—Arrangements of two or more rudders; Steering gear therefor

Definitions

  • the present invention relates to keel assemblies for use with aquatic craft to reduce
  • invention will provide advantages for powered craft of all sizes, including larger ocean ⁇
  • shapes are many, some extending the length ofthe hull, gently sloping and tapering to
  • the keel in one sense acts like a large rudder, jammed in line with the yacht's hull, thereby effectively limiting pure motion to the line ofthe hull's present
  • the rudder is then able to steer the hull
  • the dynamics of a yacht moving through water are a function of, amongst other
  • the hull provides a further role as a floating platform for sails, masts, people and
  • the equipment including floating and lift for the weight of the hull and the keel.
  • the keel tends to reduce bobbing ofthe yacht due to the counter inertia ofthe keel mass.
  • a keel's cross section is typically similar to that of a symmetrical aerofoil
  • reaction pressures water pressures acting on either side ofthe keel. In this configuration, reaction pressures
  • the invention provides a keel assembly for an aquatic craft, said
  • bias means disposed resiliently to urge the keel toward a central rest position
  • the mounting means includes a shaft extending upwardly from the keel
  • the keel is detachable from the shaft.
  • the mounting means includes two or more supporting sub-shafts
  • the mounting means includes a crank to transfer torque from
  • the resilient bias Preferably, the resilient bias
  • means comprise one or more linear pneumatic, hydraulic or coil springs, or a
  • a first end ofthe spring is connected with the crank and a second end
  • distal the first end is attached to a support within the hull, such that movement ofthe
  • the keel includes a vertically tapered piercing
  • keel includes a partially circular portion when viewed from the side, the circular portion extending substantially rearwardly of the axis of rotation.
  • the keel includes a lateral aperture to allow passage of water during turning manoeuvres.
  • the keel assembly further includes
  • keel may selectively be extended or retracted vertically with respect to the hull.
  • the keel is located on the rearward half of the hull
  • the mounting means allows the keel to be removed for maintenance, or
  • Figure 1 is a partially cut away elevation of a keel assembly according to the
  • Figure 2 is a partially cut away view ofthe keel shown in Figure 1, from the front
  • Figure 3 is a partially cut away plan view ofthe keel shown in Figures 1 and 2;
  • FIGS 4 through 13 show sub-components of the embodiment shown in figures 1
  • Figure 14 shows the path of a prior art yacht under turning conditions
  • FIGS. 15 and 16 show various aspects of the turning path of a yacht embodying
  • Figures 17 and 18 show the self righting effect of a prior art weighted keel on a
  • Figure 19 shows a schematic plan view of wind striking a prior art yacht
  • Figures 20 through 25 show various embodiments of keels for use in keel
  • Figure 26 is a simplified schematic side view of a prior art yacht
  • Figure 27 is an inverted plan view ofthe yacht shown in Figure 28;
  • Figure 28 shows a simplified side view of an alternative embodiment ofthe
  • Figure 29 is an inverted plan view ofthe embodiment shown in Figure 26;
  • Figure 30 is a drawing of yet another embodiment ofthe invention, adapted for use with a smaller sailing craft;
  • Figure 31 is a schematic view of a retractable keel according to the invention, on a
  • Figure 31 A is a detailed sectional drawing ofthe pivot assembly shown in Figure
  • Figure 3 IB is a cross-sectional view ofthe pivot assembly shown in Figure 31A
  • Figure 32 is a partial longitudinal section of another embodiment of the invention.
  • Figure 33 is a simplified side view of yet another embodiment ofthe invention.
  • Figure 34 is a simplified side view of another embodiment ofthe invention.
  • central counterweight is separated from a rearwardly displaced keel
  • Figure 35 is a combined schematic side view and inverted plan view of yet another
  • Figure 36 is a partial longitudinal section of a non-retractable embodiment ofthe
  • Figure 37 is a combined cross sectional view and plan view ofthe embodiment
  • Figure 38 is a sectional view of an alternative embodiment ofthe invention which
  • Figure 39 is a side view of a winch box for use with the embodiment shown in
  • Figure 40 is a plan view ofthe embodiment shown in Figures 38 and 39;
  • Figure 41 is a longitudinal section of a retractable embodiment of the invention for
  • Figure 42 is a simplified perspective view of a skiff inco ⁇ orating a keel assembly
  • Figure 43 is a plan view of a rudder assembly for the skiff shown in Figure 42.
  • Figure 44 is a longitudinal section ofthe rudder assembly of Figure 43.
  • keel 4 for an aquatic craft 2 includes a generally vertical keel 4.
  • the keel 4 is connected to an
  • Bias means shown generally as 12 are
  • the axis of rotation 10 is
  • the mounting means includes a pair of shafts 16 and 18 which bolt the keel to a
  • the keel assembly also includes a crank 22 which is a T-shaped vertical element
  • coil spring devices which extend between a support 24 mounted within hull 14 and
  • Support 24 consists of a
  • the top piece 26 ofthe support need not be included, depending upon the particular
  • Flange bearing plate 20 rests upon a raceway 28 formed in base plate 21 for
  • bearings may, of course, be used, depending upon the application.
  • sleeve bearings may be used to minimise the impact ofthe support and bearing areas on
  • Figure 20, for example, is for use
  • Figure 21 shows a presently preferred embodiment ofthe invention, which includes a lateral aperture 34 to allow water to shed through the centre ofthe keel 4, as
  • Figure 22 shows a keel embodying concepts from both Figures 20 and 21 , whilst
  • Figure 23 is merely another embodiment of a keel according to the invention.
  • Figure 24 is merely another embodiment of a keel according to the invention.
  • inco ⁇ orating the invention can be improved by moving the main steering rudder 36 to
  • a pin 38 is used to hold the keel at a selected vertical depth.
  • the keel may be
  • the pin retaining means may be replaced with any other suitable retaining means, such as, for example, a manually
  • this could be a frictional cam arranged to wedge the keel
  • the keel is positioned rearwardly ofthe central area
  • the skiff illustrated also has a spring
  • spiral springs 46 and 47 associated with the front rudder cause it to return to a central
  • the retractable keel 38 When not in use, the retractable keel 38 sits within a recess 50 and is protected by a
  • sleeve 53 encapsulates intermeshing plates 55, thereby to accurately and stably hold the
  • the rudders rotate in opposite directions to push the stern and bow ofthe craft about a
  • the adjustable keel assembly may vertically be adjusted
  • winch box 60 By operation of winch box 60. Turning the winch handle causes pinion gear 64 to drive
  • crank locking pins which are designed to lock the keel in a
  • keel assembly For example, means may be provided to adjust the rest position ofthe
  • the invention provides a novel assembly for use with yachts and other aquatic

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Toys (AREA)

Abstract

Ensemble quille pour bateau, ledit ensemble comprenant une quille (4), des moyens d'assemblage (8) destinés à raccorder la quille (4) à la surface inférieure du bateau de manière que la quille puisse tourner autour d'un axe généralement vertical, et des moyens d'inclinaison (12) faisant ressort permettant de pousser la quille (4) vers une position centrale de repos sensiblement parallèle à un axe longitudinal du bateau. L'axe de rotation vertical est espacé en avant d'un centre réel de pression de la quille (4).
PCT/AU1997/000230 1996-04-12 1997-04-14 Quille amelioree pour bateau Ceased WO1997038895A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB9828791A GB2333067B (en) 1996-04-12 1997-04-14 Improved keel for aquatic craft
AU24987/97A AU708693B2 (en) 1996-04-12 1997-04-14 Improved keel for aquatic craft

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPN9222A AUPN922296A0 (en) 1996-04-12 1996-04-12 Improved keel system on sailcraft and hitherto unknown, adaptions on motorised craft and vessels
AUPN9222 1996-04-12

Publications (1)

Publication Number Publication Date
WO1997038895A1 true WO1997038895A1 (fr) 1997-10-23

Family

ID=3793536

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU1997/000230 Ceased WO1997038895A1 (fr) 1996-04-12 1997-04-14 Quille amelioree pour bateau

Country Status (3)

Country Link
AU (2) AUPN922296A0 (fr)
GB (1) GB2333067B (fr)
WO (1) WO1997038895A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2918346A1 (fr) * 2007-07-03 2009-01-09 Philippe Bourbigot Dispositif differentiel angulaire pour bateaux a voile
US9688365B2 (en) 2012-07-09 2017-06-27 Fin Control Systems Pty Limited Fin plug for water craft
US9957021B2 (en) 2012-11-14 2018-05-01 Fin Control Systems Pty. Limited Fin plug for a water craft
CN111439359A (zh) * 2020-04-09 2020-07-24 浙江大学 双凸轮结构潜水器舵

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3580203A (en) * 1968-11-05 1971-05-25 Benjamin P Martin Sailboat
GB1284610A (en) * 1968-08-14 1972-08-09 Gilles Philibert Improvements in or relating to sailing boats
DE3149288A1 (de) * 1981-12-12 1983-08-25 Oosthuizen, Johannes H., Melbourne Schwenkmechanismus fuer stehsegler- und wellenreitbretter
US4854904A (en) * 1988-06-29 1989-08-08 Wahl Eric R Sailboard with adjustable keel mechanism
DE4226545A1 (de) * 1992-08-11 1993-02-18 Georg Neuhauser Kipp-dreh-mechanismus, womit man kiele von segelbooten seitlich wegkippen kann und in laengsrichtung unter das boot dreht

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE314928C (fr) *

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1284610A (en) * 1968-08-14 1972-08-09 Gilles Philibert Improvements in or relating to sailing boats
US3580203A (en) * 1968-11-05 1971-05-25 Benjamin P Martin Sailboat
DE3149288A1 (de) * 1981-12-12 1983-08-25 Oosthuizen, Johannes H., Melbourne Schwenkmechanismus fuer stehsegler- und wellenreitbretter
US4854904A (en) * 1988-06-29 1989-08-08 Wahl Eric R Sailboard with adjustable keel mechanism
DE4226545A1 (de) * 1992-08-11 1993-02-18 Georg Neuhauser Kipp-dreh-mechanismus, womit man kiele von segelbooten seitlich wegkippen kann und in laengsrichtung unter das boot dreht

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2918346A1 (fr) * 2007-07-03 2009-01-09 Philippe Bourbigot Dispositif differentiel angulaire pour bateaux a voile
US9688365B2 (en) 2012-07-09 2017-06-27 Fin Control Systems Pty Limited Fin plug for water craft
US9862467B2 (en) 2012-07-09 2018-01-09 Fin Control Systems Pty Limited Securing mechanism for water craft fin
US10377452B2 (en) 2012-07-09 2019-08-13 Fin Control Systems Pty Limited Fin plug for water craft
US9957021B2 (en) 2012-11-14 2018-05-01 Fin Control Systems Pty. Limited Fin plug for a water craft
CN111439359A (zh) * 2020-04-09 2020-07-24 浙江大学 双凸轮结构潜水器舵
CN111439359B (zh) * 2020-04-09 2023-10-31 浙江大学 双凸轮结构潜水器舵

Also Published As

Publication number Publication date
GB2333067A (en) 1999-07-14
GB2333067B (en) 2000-12-13
GB9828791D0 (en) 1999-02-17
AU708693B2 (en) 1999-08-12
AUPN922296A0 (en) 1996-05-02
AU2498797A (en) 1997-11-07

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