EP0375684A1 - Assemblage de gouvernail a basculement - Google Patents

Assemblage de gouvernail a basculement

Info

Publication number
EP0375684A1
EP0375684A1 EP19880904886 EP88904886A EP0375684A1 EP 0375684 A1 EP0375684 A1 EP 0375684A1 EP 19880904886 EP19880904886 EP 19880904886 EP 88904886 A EP88904886 A EP 88904886A EP 0375684 A1 EP0375684 A1 EP 0375684A1
Authority
EP
European Patent Office
Prior art keywords
rudder
latch
assembly
cam
release
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.)
Withdrawn
Application number
EP19880904886
Other languages
German (de)
English (en)
Other versions
EP0375684A4 (en
Inventor
Scott S. Albert
Winton P. Mcmillen
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.)
SCAT MARINE PRODUCTS, INC.
Original Assignee
SCAT MARINE PRODUCTS Inc
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 SCAT MARINE PRODUCTS Inc filed Critical SCAT MARINE PRODUCTS Inc
Publication of EP0375684A1 publication Critical patent/EP0375684A1/fr
Publication of EP0375684A4 publication Critical patent/EP0375684A4/en
Withdrawn legal-status Critical Current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
    • B63H25/382—Rudders movable otherwise than for steering purposes; Changing geometry
    • 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
    • B63H25/382—Rudders movable otherwise than for steering purposes; Changing geometry
    • B63H2025/384—Rudders movable otherwise than for steering purposes; Changing geometry with means for retracting or lifting
    • B63H2025/385—Rudders movable otherwise than for steering purposes; Changing geometry with means for retracting or lifting by pivoting

Definitions

  • Boat rudders generally comprise a vertical blade rotatable about a vertical axis secured to the stern of a boat to enable the boat to be steered.
  • the rudder either lies completely under the stern of the boat and is attached to a tiller by a rod extending up through the deck, or extends upward out of the water and is secured to a rudder housing, or directly to the boat's transom.
  • the rudder is adapted to be pivoted upward about a horizontal axis to prevent the rudder from being damaged while beaching, or while maneuvering in shallow water.
  • these kick-up rudders often require that the rudder be rigidly secured in an upright position to prevent the rudder from rotating upward due to the resistance of water on the rudder when the boat is underway. This is undesirable in that, so secured, the rudder is susceptible to damage due to impact with an unexpected obstruction, and in that it requires the skill and attention of the operator to determine when it is necessary to raise the rudder.
  • Kick-up rudders designed to avoid these drawbacks are typically overly complex or difficult to operate. What is needed is a simple, reliable kick-up rudder assembly which will automatically rotate upward upon forcible impact with the bottom or an obstruction, but will remain securely upright even in rough seas.
  • the invention is a kick-up rudder assembly including a rudder and a latch to hold the rudder in an upright position, wherein the rearward force of water on the rudder causes the latch to engage more firmly.
  • the latch will release. Since the latch engages more firmly in response to water pressure driving the rudder rearward, it is unnecessary to secure the rudder in an upright position. Furthermore, since the latch advantageously releases in response to sufficient rearward force on the rudder, it is unnecessary for the operator to determine when the latch needs to be released or to release the latch.
  • the minimum upward force on the rudder sufficient to release the latch will be less than the minimum rearward force on the rudder sufficient to release the latch. This will have the two-fold effect of causing the latch to release more easily when the rudder strikes bottom when a boat is being beached, and making it easier for the operator lifting the rudder to release the latch and raise the rudder.
  • the amount of force sufficient to release the latch is preferably adjustable.
  • a kick-up rudder assembly comprising a rudder having a latch to hold the rudder in an upright position, wherein the rudder rotates about a first pivot in response to rearward water pressure, and about a second pivot to release the latch.
  • the first pivot includes the latch itself.
  • One embodiment of the invention is a kick-up rudder assembly, including a rudder housing and a rudder.
  • the rudder housing is rotatable about a vertical axis, and the rudder is rotatably and translatably mounted on said housing.
  • the assembly is provided with a first cam extending from the leading edge of the rudder, and a second cam extending from the housing. These cams form a latch which substantially limits the rotation of the rudder when the latch is engaged.
  • a dampener biases the latch into engagement, but is sufficiently deformable to permit the latch to be released.
  • Figure 1 is a sectional view of the kick-up rudder assembly of the present invention
  • Figure 2 is a sectional view illustrating the release of the latch mechanism of the assembly of Figure 1, with the further upward rotation of the rudder shown in phantom;
  • Figure 3 is an exploded partial perspective view illustrating several components of the assembly of Figure 1;
  • Figure 4 is a partial perspective view illustrating an alternative embodiment of a cam extending from the rudder;
  • Figure 5 is an enlarged partial sectional view of an alternative embodiment of the rudder assembly of the present invention;
  • Figure 6 is a partial sectional view of the assembly of Figure 1, illustrating the position of the rudder assembly in response to force at, and in the direction of, the arrow;
  • Figure 7 is an enlarged partial sectional view of the assembly of Figure 1, illustrating the release of the latch by means of force exerted at, and in the direction of, the arrow;
  • Figure 8 is an enlarged partial sectional view of the assembly of Figure 1, illustrating the compression of the dampener by the shaft;
  • Figure 9 is an enlarged partial sectional view illustrating the cam of Figure 4.
  • the kick-up rudder assembly 11 includes a flat, elongate rudder 13 and a yoke-shaped rudder housing 15.
  • the housing 15 includes a pair of generally C-shaped sides 17 joined at the top and bottom by connecting portions, 19 and 21, respectively.
  • the housing 15 is rotatable about a vertical axis A, and is controlled by means of a tiller 23 secured to the housing 15 by a pin 25 or other suitable means.
  • the rudder 13 has a leading edge 27 and a trailing edge 29 and is provided with a disc-shaped receptacle or cavity 31 at one end.
  • the rudder 13 is secured to the housing 15 by means of a cylindrical shaft 33 which extends through the cavity 31 and is itself secured snugly within bores in the sides 17 of the housing 15 by cotter pins or other suitable means.
  • the shaft 33 is easily removable to facilitate the replacement and repair of assembly components.
  • the rudder 13 is provided with an elongate handle 35 extending from the trailing edge 29 of the rudder proximate the cavity 31.
  • a rigid, cylindrical tube-shaped lining 41 is provided between the dampener 37 and the shaft 33 to prevent the shaft 33 from sticking to or damaging the foam.
  • the rudder housing 15 may be secured to a deck 43 and a hull 45 of a boat by means of coaxial pintles, 47 and 49, extending from the top and bottom connecting portions, 19 and 21, respectively, of the housing 15.
  • the housing 15 may be secured to brackets, which are themselves secured to the transom of the boat, or for the housing 15 to be secured by other means.
  • the connecting means permits the 'housing 15 enough freedom of rotation about the vertical axis A to allow the craft to be steered.
  • the rudder is provided with a first cam 51 positioned along and extending from the leading edge 27 of the rudder.
  • this first cam 51 cooperates with a second cam 53 to form a latch 55 which prevents the rudder 13 from rotating upward about the shaft 33.
  • the dampener 37 holds the shaft 33 in a relaxed position (one minimizing the compression of the dampener) in the middle of the cavity/dampener, thereby maintaining the rudder 13 in a generally upright position.
  • the dampener may also bias the rudder downward when the rudder is in an upright position. It would naturally be possible to utilize a dampener 37 having an internal bore significantly larger than the shaft 33 or having an outer configuration which would permit the movement of the dampener relative the sides of the cavity 31. This, however, would provide a certain amount of free play in the rudder 13.
  • the shape of the cavity 33 also inhibits the release of the latch 55.
  • the farther the lower portion of the rudder 13 is driven rearward the less the rudder can move upward without encountering the rigid walls of the cavity 31.
  • the upper portion of the rudder is driven so far forward against the shaft 33 that the walls of the cavity 31 will not permit sufficient upward movement of the rudder 13 to permit the latch 55 to be released.
  • both the dampener 37 and the cavity 31 configuration inhibit the upward movement of the rudder relative the shaft 33, thereby preventing the rudder from rotating upward unless sufficient force is applied.
  • the major component of force applied to the handle drives the rudder upward, causing the latch to be released before the shaft significantly limits the rudder's upward movement.
  • the cam 51 extending from the leading edge 27 of the rudder may be integrally formed with the rudder 13, the cam may also be a separate element. As shown in Figures 4 and 9, this separate cam 51 may advantageously be provided with a vertical internal slot 57 for receiving a screw 59 or other suitable fastener to permit the cam 51 to be raised or lowered to "fine-tune" the latch 55.
  • this separate cam 51 may advantageously be provided with a vertical internal slot 57 for receiving a screw 59 or other suitable fastener to permit the cam 51 to be raised or lowered to "fine-tune" the latch 55.
  • an alternative embodiment of the assembly 11 is advantageously provided with means for rotating the rudder 13 downward to engage the latch 55.
  • this means may take the form of a cord 61 attached near the cavity 31 along the leading edge 27 of the rudder 13 and threaded through the tiller 23 over the pin 25.
  • the cord can either extend out of the tiller far enough to prevent it from sliding entirely into the tiller when the rudder 13 is rotated upward, or can be tied to a piece of elastic and provided with a balled end so the excess cord will be gathered within the tiller when the rudder is in an upright position.
  • the operator can rotate the rudder to an upright position so the latch 55 engages.
  • the major component of force applied to the cord 61 moves the rudder upward from its relaxed position, rather than driving the rear wall of the cavity 31 against the shaft 33 and compressing the dampener before significant upward movement of the rudder occurs.
  • the latch 55 will engage before the shaft 33 significantly limits the rudder's upward movement.
  • the rudder housing 15 may be provided with a retractable pintle 63 to permit the assembly 11 to be rapidly mounted and dismounted.
  • the assembly 11 can be mounted by positioning the lower pintle 49 in a hole in the hull 45 of the craft, pulling the pintle 63 downward by means of a connecting rod 65 so that the outward bias of a spring 67 enclosed in the housing 15 is overcome, aligning the pintle 63 with a hole in the craft's deck 43, and releasing the rod 65 so the spring 67 will force the pintle 63 outward so that it is received by the hole in the deck 43.
  • the handle 35 can be lifted to rtelease the latch 55 in order to raise the rudder 13 when the boat is being launched.
  • the cord 61 shown in Figure 5
  • the cord 61 can be pulled to rotate the rudder 13 downward to engage the latch.
  • the latch will securely hold the rudder 13 upright while the boat is underway despite the pressure of water against the lower portion of the rudder.
  • the latch 55 is designed to release and allow the rudder to rotate upward rather than be damaged.
  • the handle 35 can again be used to release the latch 55 and rotate the rudder upward, or the rudder can be left upright until it strikes the bottom with sufficient force to release the latch, thereby permitting the rudder to rotate freely upward.

Landscapes

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

Abstract

Assemblage de gouvernail à basculement (11) comprenant un gouvernail (13) et un verrou (51, 53) permettant de tenir le gouvernail (11) dans une position droite, la force de l'eau exercée vers l'arrière sur le gouvernail augmentant la fermeté d'engagement du verrou (51, 53). Avantageusement, le verrou (51, 53) se libère en réponse à une force suffisante vers l'arrière exercée sur le gouvernail (13), et la force minimale exercée vers le haut sur le gouvernail (13) suffisante pour libérer le verrou (51, 53) est inférieure à la force minimale vers l'arrière exercée sur le gouvernail (13) suffisante pour libérer le verrou (51, 53). De même, l'intensité de la force suffisante pour libérer le verrou (51, 53) est réglable. Un autre aspect de l'invention consiste en un assemblage de gouvernail à basculement (11) comprenant un gouvernail (13) ayant un verrou (51, 53) tenant le gouvernail (13) dans une position droite, le gouvernail (13) tournant autour d'un premier pivot (51, 53) en réponse à une pression de l'eau vers l'arrièrre, et autour d'un second pivot (33) pour libérer le verrou (51, 53), le premier pivot incorporant avantageusement le verrou (51, 53) lui-même.
EP19880904886 1987-05-13 1988-05-13 Kick-up rudder assembly Withdrawn EP0375684A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US4962087A 1987-05-13 1987-05-13
US49620 1987-05-13

Publications (2)

Publication Number Publication Date
EP0375684A1 true EP0375684A1 (fr) 1990-07-04
EP0375684A4 EP0375684A4 (en) 1990-09-26

Family

ID=21960786

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19880904886 Withdrawn EP0375684A4 (en) 1987-05-13 1988-05-13 Kick-up rudder assembly

Country Status (2)

Country Link
EP (1) EP0375684A4 (fr)
WO (1) WO1988008809A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023218376A1 (fr) * 2022-05-11 2023-11-16 Gb Naval Development Kit d'installation de plans porteurs sur un bateau notamment à propulsion éolienne, et procédé d'installation d'un tel kit sur un tel bateau

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0676080B2 (ja) * 1989-03-02 1994-09-28 喜八郎 金崎 船舶の舵機構
FR3135446A1 (fr) * 2022-05-11 2023-11-17 Gb Naval Development Système de montage d’un safran à la coque d’un bateau, ensemble comprenant un tel système de montage et un safran et procédé d’installation d’un safran

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3085540A (en) * 1962-04-16 1963-04-16 Arthur L Crabille Automatic flip-up water rudder mechanism for sailboats and airboats
US3575124A (en) * 1969-06-16 1971-04-13 Coast Catamaran Corp Kickup rudder apparatus for boats
US4046093A (en) * 1976-02-17 1977-09-06 Surfglas, Inc. Kickup rudder apparatus having adjustable rake

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3269347A (en) * 1965-02-09 1966-08-30 Francis L Koenig Kick-up rudder for sailboats
GB1435625A (en) * 1973-12-04 1976-05-12 Richmond Marine Ltd Steering assembly for a marine craft
US4029038A (en) * 1975-12-22 1977-06-14 Pfahl Kurt J Releasable rudder lock
US4319538A (en) * 1980-03-07 1982-03-16 Windrush Nominees Pty. Ltd. Kickup rudder assembly having roller detent

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3085540A (en) * 1962-04-16 1963-04-16 Arthur L Crabille Automatic flip-up water rudder mechanism for sailboats and airboats
US3575124A (en) * 1969-06-16 1971-04-13 Coast Catamaran Corp Kickup rudder apparatus for boats
US4046093A (en) * 1976-02-17 1977-09-06 Surfglas, Inc. Kickup rudder apparatus having adjustable rake

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO8808809A1 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023218376A1 (fr) * 2022-05-11 2023-11-16 Gb Naval Development Kit d'installation de plans porteurs sur un bateau notamment à propulsion éolienne, et procédé d'installation d'un tel kit sur un tel bateau
FR3135442A1 (fr) * 2022-05-11 2023-11-17 Gb Naval Development Kit d’installation de plans porteurs sur un bateau notamment à propulsion éolienne, et procédé d’installation d’un tel kit sur un tel bateau

Also Published As

Publication number Publication date
WO1988008809A1 (fr) 1988-11-17
EP0375684A4 (en) 1990-09-26

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Inventor name: MCMILLEN, WINTON P.

Inventor name: ALBERT, SCOTT, S.

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