EP0102579A2 - Appareil électro-hydraulique pour gouverner un bateau - Google Patents

Appareil électro-hydraulique pour gouverner un bateau Download PDF

Info

Publication number
EP0102579A2
EP0102579A2 EP83108261A EP83108261A EP0102579A2 EP 0102579 A2 EP0102579 A2 EP 0102579A2 EP 83108261 A EP83108261 A EP 83108261A EP 83108261 A EP83108261 A EP 83108261A EP 0102579 A2 EP0102579 A2 EP 0102579A2
Authority
EP
European Patent Office
Prior art keywords
pump
pressure generator
hydraulic pressure
remote control
rudder
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Withdrawn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
EP83108261A
Other languages
German (de)
English (en)
Other versions
EP0102579A3 (fr
Inventor
Giorgio Brighi
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.)
SEIPEM Srl
Original Assignee
SEIPEM Srl
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 SEIPEM Srl filed Critical SEIPEM Srl
Publication of EP0102579A2 publication Critical patent/EP0102579A2/fr
Publication of EP0102579A3 publication Critical patent/EP0102579A3/fr
Withdrawn legal-status Critical Current

Links

Images

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
    • B63H25/08—Steering gear
    • B63H25/14—Steering gear power assisted; power driven, i.e. using steering engine
    • B63H25/16—Steering gear power assisted; power driven, i.e. using steering engine with alternative muscle or power operated steering

Definitions

  • This invention relates to a steering gear for any type of watercraft, particularly of small and medium tonnage.
  • the steering gear according to the invention comprises a rudder hydraulic actuating unit which can be fed, alternately, by either a manual hydraulic pressure generator, constituted by a pump that can be operated manually through the steering wheel, and by a powered hydraulic pressure generator, constituted by a pump that can be driven either by a suitable electric motor or by a power take-off from the propelling engine of the watercraft, and that can be actuated through an electronic remote control transmitter.
  • a manual hydraulic pressure generator constituted by a pump that can be operated manually through the steering wheel
  • a powered hydraulic pressure generator constituted by a pump that can be driven either by a suitable electric motor or by a power take-off from the propelling engine of the watercraft, and that can be actuated through an electronic remote control transmitter.
  • the rudder hydraulic actuating unit is generally formed by two actuating cylinders, either of single-acting or double-acting type, or by a single double-acting actuating cylinder, or by any other suitable type of hydraulic actuator or motor, also of rotary type such as of the vane type, excentric type, or the like.
  • the pump that can be operated manually by means of the steering wheel is formed, preferably, by a reversible pump of any suitable type which, depending on the direction of rotation of the steering wheel, delivers the pressurized liquid in either direction to the rudder actuating unit.
  • the powered pump may also be formed by a reversible pump of any type, but, preferably, it is formed by a unidirectional delivery pump and is associated with a multi-way solenoid valve controlled by the electronic remote control transmitter so as to deliver the hydraulic fluid in either direction to the rudder actuating unit.
  • the electronic remote control transmitter is generally operated by means of a manual steering rotary member, the so-called steering handweel, by means of which and with the aid of a suitable graduated scale the desired rudder angle is obtained.
  • the steering wheel for operating the manual pump, and the steering handwheel for operating the electronic remote control transmitter which actuates the powered pump are two separate members which are often considerably spaced from each other and sometimes are even arranged at two different steering stations. Therefore, not only the system is technically and constructively more complicated, but in case of any failure of the powered hydraulic pressure generator, the helmsman cannot change-over at once from the control through the steering handwheel which actuates the electronic remote control transmitter, to the control through the steering wheel which actuates the manual pump of the hydraulic pressure manual generator, and usually he must go from one station to another.
  • the object of the invention is to overcome these disadvantages and to ensure a technical, constructional and operative simplification of steering gears of the type described above.
  • the object of the invention is give the helmsman the certainty to change-over immediately with no delay and without moving to some other place, from the steering through the powered hydraulic pressure generator and respective electronic remote control transmitter, to the steering through the manual hydraulic pressure generator and respective steering wheel, and vice-versa.
  • the same manual steering element namely the steering wheel
  • the same manual steering element is coupled both to the pump of the manual hydraulic pressure generator and to the transmitter for the electronic remote control of the powered hydraulic pressure generator with suitable rations whereby, in order to move the rudder hard over to hard over through the entire amplitude thereof by means of the manual hydraulic pressure generator, a plurality of complete revolutions of the steering wheel are to be made, whereas to move the rudder hard over to hard over through the entire amplitude thereof by means of the powered pressure generator and respective electronic remote control transmitter the steering wheel is to be rotated only a fraction of the round angle, the electronic remote control transmitter being designed and/or coupled to the steering wheel so as to allow a plurality of complete revolutions thereof.
  • the electronic remote control transmitter can be constructed so as to be rotated safely over two or more complete revolutions and/or coupled to the steering wheel through a slip joint.
  • the steering wheel may continue being coupled with the pump of the manual hydraulic pressure generator, asin this instance, the total angular displacements of the steering wheel are so small (generally not larger than 70 0- 100 0 ) as to be substantially uninfluent on the manual hydraulic pressure generator.
  • the rotation amplitude of the steering wheel may also be limited mechanically, e.g. by means of suitable stops, to the fraction of round angle required to actuate the electronic remote control transmitter.
  • the rudder when the rudder is controlled by the same steering wheel, but, contrarily, through the manual hydraulic pressure generator, specifically after removing said stops limiting the rotation amplitude of said steering wheel, the latter can be rotated freely as much as required to control the rudder, since the electronic remote control transmitter can permit safely even a plurality of complete revolutions.
  • the numeral 1 indicates the rudder stock of a medium or smaller tonnage vessel.
  • the rudder is actuated by means of an actuator unit comprising, in the illustrated embodiment, two hydraulic single-acting actuating cylinders 2 and 3, pivotably connected at one end 102, 103 to the hull of the vessel and at the other end (piston rod) 202, 203 to the opposite ends of the tiller 4 secured to the upper end of the rudder stock 1.
  • the two actuating cylinders 2, 3 are hydraulically connected to both sides of a reversible hydraulic pump 5 which may be a rotary pump such as a radial plungers pump, an orbital pump, a vane pump or the like.
  • the pump 5 also contains a small reserve of hydraulic liquid to compensate for any small leaks of the installation.
  • the pump 5 is operated by the steering wheel 6 through the shaft 7.
  • the steering wheel 6 is connected directly to the pump 5, i.e. the shaft 7 of the steering wheel 6 is also the shaft of the pump 5.
  • the pump 5, manually operated through the steering wheel 6, constitutes a manual hydraulic pressure generator for actuating the rudder.
  • the invention provides a powered hydraulic pressure generator.
  • This powered generator comprises a pump 8 which is preferably, through not necessarily, of the unidirectional delivery tupe and is driven by a suitable electric motor 9. Instead of the electric motor 9, the pump 8 may be driven either by a suitable internal combustion engine or by a power take-off from the propelling engine of the vessel.
  • the pump 8 may be of any suitable type, such as a radial plungers pump, a gear pump or the like.
  • a multi-way solenoid valve 10 Associated with the powered pump unit 8 is a multi-way solenoid valve 10 which, in its intermediate rest position shown in Figure 1, connects the delivery of the pump 8 in short-circuit manner to the suction of said pump 8.
  • said solenoid valve 10 connects the delivery of the pump 8 to the hydraulic actuating cylinder 3 and connects the suction of the pump to the hydraulic actuating cylinder 2, thus causing a clockwise rotation of the rudder tiller 4.
  • said solenoid valve 10 connects the delivery of the pump 8 to the hydraulic actuating cylinder 2, and connects the suction of the pump 8 to the hydraulic actuating cylinder 3, thus inverting the connection of these two cylinders 2, 3 with respect to the first active position and causing an anticlockwise rotation of the rudder tiller 4.
  • the solenoid valve 10 is actuated as specified above by means of an electronic remote control system comprising a rotary remote control transmitter 11 operated by the steering wheel 6 and a rotary response transmitter 12 operated by the rudder and connected, for example, to the rudder tiller 4 through a crank 13 and connecting rod 14, and a comparator 15 connected both to the remote control transmitter 11 and response transmitter 12 and adapted to actuate the solenoid valve 10 as follows:
  • the helmsman can immediately change-over to manual steering by means of the pump 5, which is also operated through the steering wheel 6 and will deliver, depending upon the direction of rotation of said steering wheel 6, the hydraulic liquid into either of the two actuating cylinders 2 and 3, thus causing the desired angular movement of the rudder.
  • the steering wheel 6 To move the rudder directly by hand through the steering wheel 6, i.e. by means of the manually-operated pump 5, over its entire amplitude, a plurality of complete revolutions of the steering wheel are to be made, whereas to move the rudder over its entire amplitude through the same steering wheel 6 and by means of the electronic remote control transmitter 11 and pump 8 driven by the motor 9, the steering wheel 6 need be rotated only through angles which are proportional to the actual angles over which the rudder is moved, anyway over angles which are smaller than one round angle, i.e. smaller than 360°.
  • the limited angular displacements of the steering wheel 6 while operating by means of the powered pump 8 and electronic remote control transmitter 11, will not cause any appreciable actuation of the pump 5 for the manual steering and, therefore, any appreciable direct action on the rudder.
  • the electronic remote control transmitter 11 is of rotary type and so designed as to undergo, unharmed, several complete revolutions, even if they are not required for its control function.
  • FIG. 2 and 3 This basic principle of the steering system according to the invention may be embodied by various constructions, a preferred embodiment being shown in Figures 2 and 3.
  • a casing 17 which is fixed to a mounting wall 18 by means of screws 20, a front pressure ring 19 and a back flange 217, the latter having also secured thereto by means of a flange 115 and screws 20, the body of the pump manual steering 5.
  • the shaft 7 of the pump 5 is passed through the casing 17 and front cover 117 thereof and mounts the steering wheel 6.
  • a gear wheel 21 is secured to the shaft 7 and meshes with a gear wheel 22 secured to a shaft 122 which is rotatably mounted in the cover 117 of the casing 17.
  • the actuating spindle 111 of the electronic remote control transmitter 11 is secured to the gear wheel 22, whereas the body of said transmitter 11 is secured to an annular member 23 which is non-rotatably mounted on the cover 117 of the casing 17 by means of a rod 24.
  • the shaft 1 22 of the gear wheel 22 is passed through the cover 117 of the casing 17 and carries, outside of said cover, a disc member 25 provided with a graduated scale and co-operating with a stationary pointer 26.
  • the actuating spindle 111 of the remote control transmitter 11 is to be rotated, from its intermediate position corresponding to the central position of the rudder, by about 35°-45°, or less, to the right and left sides, i.e. by a total angle of 70°-100°, or less.
  • a gear ratio of the couple of gear wheels 21, 22 is selected whereby, to obtain said limited angular displacement of the actuating spindle 111 of the remote control transmitter 11, the steering wheel 6, and therefore the shaft 7 of the pump 5 must be rotated through a total angle smaller than 360°.
  • This angle of rotation of the shaft 7 is limited by stops, specifically by a stop member 27 fixedly mounted on the shaft 7 and co-operating with a stop pin 28 that can be inserted through the cover 117 of the casing 17 so as to interfere with the path of the stop member 27.
  • the graduated disc 25 co-operating with the pointer 26 permits any person to check the steering angle set through the steering wheel 6 and remote control transmitter 11.
  • the actual angular position of the rudder may be indicated by any conventional electrical indicator of the rudder angle.
  • the ratio between the two gears 21, 22 may be 1 : 1 or other.
  • the couple of gears 21, 22 may be replaced by a different drive system, e.g. a belt or a chain drive.
  • the rotatable graduated disc 25 may be replaced by a rotatable pointer co-operating with a graduated scale fixed on the cover 117, particularly when the drive between the shafts 7 and 122 is such that both shafts 7 and 122 revolve in the same direction.
  • the remote control transmitter 11 may be arranged in any other manner.
  • the disengageable locking stops to limit the rotation amplitude of the shaft 7 may be constructed in various manners.
  • the electronic remote control transmitter 11 and the response transmitter 12 may comprise any variable electric elements, preferably of the rotary type.
  • said transmitters comprise potentiometers of any suitable type, such as the coil type, film type, ceramic type, or the like. The magnitudes of the electrical signals from the two transmitters 11, 12 are then compared in the comparator 15.
  • the rudder actuating unit may also be constructed in any other suitable manner.
  • the two hydraulic actuating single-acting cylinders 2, 3 may be of double-acting type or may be replaced by a single double-acting hydraulic actuating cylinder, or by any other hydraulic aetuator, even of rotary type.
  • the rudder actuating unit, the response transmitter 12 and the powered pump 8 with its driving motor are mounted on a single supporting base structure or bedplate and constitute together a unitary construction, thus simplifying greatly the installation of the steering apparatus, reducing the overall dimensions thereof, and ensuring the utmost safety conditions, since the entire apparatus may be easily tested before being mounted aboard.
  • the steering apparatus may comprise at least one further steering station constituted by a thoroughly electronic remote control system of the type described above, that is formed only by an electronic remote control transmitter and its own hand actuator with a rudder angle indicator.
  • This second steering station may be located, for example, on the counter-bridge and/or on the bridge-wings, and may be provided with a steering system operated by means of an electric ON-OFF switch through which the personnel can act directly, for example, on the solenoid valve, or on one or more equivalent solenoid valves, to connect the powered pump 8 to the rudder actuating unit to move the rudder in either direction.
  • This steering system operated by means of an electric ON-OFF switch preferably comprises entirely independent electric supply lines to the solenoid valve (or valves) to give the steering apparatus maximum safety characteristics.
  • Figure 4 shows the electro-hydraulic diagrammatic circuit of a second embodiment of the steering gear according to the invention, in a more complete and improved version. Again, the hydraulic connections are indicated with full lines and the electrical connections with dotted lines.
  • Figure 5 is an enlarged sectional view of a group of valves of the embodiment of Figure 4.
  • Figure 4 corresponds to the embodiment of Figures 1 to 3, and the components described previously are indicated by the same numerals.
  • the following additional components are included in Figure 4 in addition to those described previously:
  • FIG. 4 in addition shows the valve 36 for locking the rudder in the desired angular position thereof.
  • the valve 36 known per se, comprises a cylinder wherein a piston 37 is axially slidable and divides the cylinder space in two chambers 38, 39.
  • One of these chambers (for example 38) is connectable with the conduit 105 of the manual steering pump 5, and the other chamber (for example 39) is connectable with the other conduit 205 of said pump 5.
  • One of the chambers 38, 39 of the cylinder (for example the chamber 38) communicates through a non-return valve 40 with one of the hydraulic actuating cylinders of the rudder actuating unit (for example with the cylinder 2), while the other chamber 39 communicates through another non-return valve 41 with the other hydraulic actuating cylinder 3 of the rudder actuating unit.
  • the two non-return valves 40, 41 will be opened by the action of a higher pressure in the associated chamber 38 or 39 of the cylinder and are mechanically connected to the piston 37, e.g. by means of push rods 42 fixed to the faces of the piston 37, whereby the following operation will be obtained:
  • an automatic short-circuiting pump 43 is provided between the two conduits 105, 205 of the manual steering pump 5. While at rest, that is when the rudder is controlled directly by means of the manual steering pump 5, the valve 43 connects the conduits 105, 205 of the pump 5 to the corresponding downstream conduits, e.g. by the action of a spring 44 and as shown in Figure 4.
  • valve 43 When the rudder is controlled by means of the powered pump 8 and remote control transmitter 11, the valve 43 is moved, by the action of the pressure differential between the delivery and suction sides of the powered pump 8, to a position wherein it mutually connects, in short-circuit manner, the two conduits 105, 205 of the manual steering pump 5.
  • the short-circuit valve 43 is inserted upstream of the locking valve 36 and may be constructionally embodied in various manners.
  • a valve 45 is provided downstream of the short-circuit valve 43 to ensure the automatic filling of the hydraulic system associated with the powered pump 8, without purposely providing a piping extending to the storage tank 30, as in the heretofore known systems.
  • the automatic filling valve 45 substantially corresponds to the filling valve 31 described above in connection with the automatic filling of the hydraulic system associated with the manual steering pump 5, the similar parts being indicated by the same reference numerals.
  • the intermediate chamber 32 communicates with the suction conduit of the powered pump 8, while the two opposite non-return valve members 34, 33 communicate with the conduit 105 and with the conduit 205, respectively, of the manual steering pump 5.
  • the non-return valve 33 or 34 associated with the pressurized conduit 205 or 105 of the manual steering pump 5 is closed, and the other valve 34 or 33 is opened by the action of the push rod 35, thus connecting the intermediate chamber 32 and, therefore, the suction conduit of the powered pump 8 to the other conduit 105 or 205 of the manual steering pump 5, said other conduit being under suction and connected through the automatic filling valve 31 to the oil tank 30, as described above.
  • the suction side of the powered pump 8 is always connected to the tank 30 through either of the conduits 105, 205 of the manual steering pump 5 regardless of the direction of rotation of the steering wheel 6 to actuate the remote control transmitter 11.
  • the locking valve 36, the short-circuiting valve 43 and the filling valve 45 are preferably assembled together in a unitary construction with the rudder actuating unit (hydraulic actuating cylinders 2, 3), with the response transmitter 12 and with the pump 8 and respective driving motor 9, said unitary construction being connected only through the conduits 105, 205 to the hydraulic system of the manual steering pump 5.
  • Figure 5 shows a preferred embodiment of the short-circuiting valve 43 assembled in a unitary group with the automatic filling valve 45 for the powered pump 8.
  • a body 46 comprises two through bores which are connected to the conduits 105, 205, respectively, of the manual steering pump 5 and which, therefore, are indicated by the same numerals 105, 205 of said conduits.
  • Slidably arranged in a central cylindrical blind bore 47 of the body 36 there is mounted a piston 48 which is urged outwardly (towards the right in Fig. 5) by a spring 44 and which is retained in the bore 47 by a tubular nipple 49 which is screwed in the bore 47 and is connected to the delivery side of the powered pump 8.
  • the piston 48 is formed with an annular peripheral groove 50, and the wall of the cylindrical bore 47 is formed with two spaced annular grooves 51, 52 one of which (for example the groove 51) communicates through a duct 151 with the through hole 105 serially connected with one of the conduits of the manual steering pump 5, while the other groove 52 communicates through a duct 152 with the other through hole 205 serially connected with the other conduit of said manual steering pump 5.
  • the cylindrical bore 47 communicates through the duct 53 with the suction side of said powered pump 8.
  • the pressure differential between the suction and the delivery sides of the powered pump 8 overcomes the action of the spring 44 and moves the piston 48 against the action of said spring to a position (left side in Figure 5) wherein the peripheral annular groove 50 of said piston 48 communicates with both the inside annular grooves 51, 52 in the bore 47, thus putting into communication these two grooves 51, 52 with each other and, therefore, short-circuiting the two conduits 105, 205 through the ducts 151 and 152.
  • the two non-return. valves 33, 34 are formed by ball members loosely arranged in corresponding peripheral recesses 133, 134 of the body 54. Said recesses 133, 134 communicate, through the respective valve seats, with the intermediate chamber 32 slidably lodging the push-member 35 for mechanically connecting the two non-return valves 33, 34. Said intermediate chamber 32 communicates, through a transverse hole 55, with the duct 53 connected to the suction side of the powered pump 8.
  • the peripheral recesses 133, 134 containing the non-return valves 33, 34 also communicate, through holes 233, 234 with the conduits 205 and 105, respectively.
  • the embodiment according to Figure 5 has the advantagq of a simple and compact construction which may be easily assembled and disassembled, and serially connected in the two conduits 105, 205 of the manual steering pump 5.
  • the valves 31 and 36 may also be provided in the embodiment of Figure 1.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Power Steering Mechanism (AREA)
EP83108261A 1982-09-03 1983-08-22 Appareil électro-hydraulique pour gouverner un bateau Withdrawn EP0102579A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT1261682 1982-09-03
IT12616/82A IT1157696B (it) 1982-09-03 1982-09-03 Timoneria elettroidraulica per natanti

Publications (2)

Publication Number Publication Date
EP0102579A2 true EP0102579A2 (fr) 1984-03-14
EP0102579A3 EP0102579A3 (fr) 1985-06-19

Family

ID=11142225

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83108261A Withdrawn EP0102579A3 (fr) 1982-09-03 1983-08-22 Appareil électro-hydraulique pour gouverner un bateau

Country Status (2)

Country Link
EP (1) EP0102579A3 (fr)
IT (1) IT1157696B (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009047134A2 (fr) * 2007-10-05 2009-04-16 Zf Friedrichshafen Ag Unité de direction pour un système de pilotage de navire steer-by-wire (pilotage par câble) et procédé de fonctionnement de l'unité de direction
WO2009047135A3 (fr) * 2007-10-05 2009-06-18 Zahnradfabrik Friedrichshafen Procédé pour faire fonctionner une unité de direction pour un système de commande de navire tout électrique
NL2004129C2 (nl) * 2010-01-22 2011-07-25 Wetterwille Beheer B V De Stuursysteem met parallelle hoeksensor gestuurde actuator.
US8176865B2 (en) 2007-10-05 2012-05-15 Zf Friedrichshafen Ag Steering actuator for a steer-by-wire ship's control system and method for operating said steering actuator
US8376793B2 (en) 2007-10-05 2013-02-19 Zf Friedrichshafen Ag Method for controlling a surface drive for a watercraft in the upper speed range
US8376792B2 (en) 2007-10-05 2013-02-19 Zf Friedrichshafen Ag Method for controlling a watercraft having a surface drive
US8376791B2 (en) 2007-10-05 2013-02-19 Zf Friedrichshafen Ag Method for controlling a surface drive for a watercraft
DE102017110989A1 (de) 2017-05-19 2018-11-22 Hoerbiger Automatisierungstechnik Holding Gmbh Motorgetriebenes Wasserfahrzeug

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1484139A (fr) * 1966-06-20 1967-06-09 Danfoss As Commande pour un servo-moteur hydraulique, en particulier pour un servo-moteur hydraulique de direction
US3488954A (en) * 1968-06-04 1970-01-13 Sperry Rand Corp Dual speed steering system
DE1756029A1 (de) * 1967-03-24 1970-02-19 Jean Mercier Gesteuerte Stellanlage
FR2367657A1 (fr) * 1976-10-13 1978-05-12 Sperry Rand Corp Barre pour navire
EP0047004A2 (fr) * 1980-09-02 1982-03-10 Pennwalt Corporation Capteur de direction pour une direction assistée

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1484139A (fr) * 1966-06-20 1967-06-09 Danfoss As Commande pour un servo-moteur hydraulique, en particulier pour un servo-moteur hydraulique de direction
DE1756029A1 (de) * 1967-03-24 1970-02-19 Jean Mercier Gesteuerte Stellanlage
US3488954A (en) * 1968-06-04 1970-01-13 Sperry Rand Corp Dual speed steering system
FR2367657A1 (fr) * 1976-10-13 1978-05-12 Sperry Rand Corp Barre pour navire
EP0047004A2 (fr) * 1980-09-02 1982-03-10 Pennwalt Corporation Capteur de direction pour une direction assistée

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009047134A2 (fr) * 2007-10-05 2009-04-16 Zf Friedrichshafen Ag Unité de direction pour un système de pilotage de navire steer-by-wire (pilotage par câble) et procédé de fonctionnement de l'unité de direction
WO2009047134A3 (fr) * 2007-10-05 2009-06-18 Zahnradfabrik Friedrichshafen Unité de direction pour un système de pilotage de navire steer-by-wire (pilotage par câble) et procédé de fonctionnement de l'unité de direction
WO2009047135A3 (fr) * 2007-10-05 2009-06-18 Zahnradfabrik Friedrichshafen Procédé pour faire fonctionner une unité de direction pour un système de commande de navire tout électrique
US8176865B2 (en) 2007-10-05 2012-05-15 Zf Friedrichshafen Ag Steering actuator for a steer-by-wire ship's control system and method for operating said steering actuator
US8255102B2 (en) 2007-10-05 2012-08-28 Zf Friedrichshafen Ag Steering unit for a steer-by-wire ship's control system and method for operating the steering unit
US8376793B2 (en) 2007-10-05 2013-02-19 Zf Friedrichshafen Ag Method for controlling a surface drive for a watercraft in the upper speed range
US8376792B2 (en) 2007-10-05 2013-02-19 Zf Friedrichshafen Ag Method for controlling a watercraft having a surface drive
US8376791B2 (en) 2007-10-05 2013-02-19 Zf Friedrichshafen Ag Method for controlling a surface drive for a watercraft
NL2004129C2 (nl) * 2010-01-22 2011-07-25 Wetterwille Beheer B V De Stuursysteem met parallelle hoeksensor gestuurde actuator.
EP2347945A1 (fr) * 2010-01-22 2011-07-27 De Wetterwille Beheer B.V. Système de direction comprenant un actionneur parallèle commandé par un capteur d'angle
DE102017110989A1 (de) 2017-05-19 2018-11-22 Hoerbiger Automatisierungstechnik Holding Gmbh Motorgetriebenes Wasserfahrzeug
DE102017110989B4 (de) 2017-05-19 2019-02-14 Hoerbiger Automatisierungstechnik Holding Gmbh Motorgetriebenes Wasserfahrzeug

Also Published As

Publication number Publication date
IT8212616A0 (it) 1982-09-03
EP0102579A3 (fr) 1985-06-19
IT1157696B (it) 1987-02-18

Similar Documents

Publication Publication Date Title
US4878864A (en) Outboard thruster with direct drive hydraulic motor
US3888203A (en) Stern drive for boats
US3999502A (en) Hydraulic power trim and power tilt system supply
CA2353053C (fr) Systeme de commande de gouvernail dote de sortie hydraulique et electronique jumelee
US3112728A (en) Twin screw power motor boat and transmission control
EP0102579A2 (fr) Appareil électro-hydraulique pour gouverner un bateau
GB2203112A (en) Power steering system for marine propulsion device
US3847107A (en) Hydraulic marine propulsion and guidance system
US6113444A (en) Steering mechanism for an outboard motor
US5007866A (en) Trimming/tilting system for marine propulsion unit
US3913517A (en) Hydraulic steering mechanism for marine drive
US6598553B1 (en) Power assist marine steering system
US5146745A (en) Steering signal conversion manifold
US3596626A (en) Steering and tilting systems for marine vessels
AU608670B2 (en) A pump assembly
US1723617A (en) Feathering screw propeller
US6524147B1 (en) Power assist marine steering system
US4551973A (en) Hydraulic power source and valve therefor
US4416637A (en) Marine steering mechanism and associated actuating and locking device
US4372849A (en) Hydraulic pumping and switching apparatus
US4132503A (en) Variable-pitch propeller
US3408035A (en) Flow control systems and operator therefor
US3086595A (en) Hydraulic controllable pitch propeller system
US3273656A (en) Hydraulically actuated controllable-pitch propeller system
US5471907A (en) Marine steering apparatus

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB LI LU NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB LI LU NL SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19850220

RIN1 Information on inventor provided before grant (corrected)

Inventor name: BRIGHI, GIORGIO