US20110030604A1 - Swing motion reducing apparatus for ship - Google Patents
Swing motion reducing apparatus for ship Download PDFInfo
- Publication number
- US20110030604A1 US20110030604A1 US12/696,687 US69668710A US2011030604A1 US 20110030604 A1 US20110030604 A1 US 20110030604A1 US 69668710 A US69668710 A US 69668710A US 2011030604 A1 US2011030604 A1 US 2011030604A1
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- United States
- Prior art keywords
- damper
- temperature
- motor
- path
- reducing apparatus
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- 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.)
- Abandoned
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- 230000033001 locomotion Effects 0.000 title claims abstract description 54
- 239000010720 hydraulic oil Substances 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B39/00—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude
- B63B39/04—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude to decrease vessel movements by using gyroscopes directly
Definitions
- the present invention relates to an apparatus for reducing a swinging motion of a ship such as a rolling motion, a pitching motion and a yawing motion.
- Japanese Patent No. 3,556,857 discloses a swinging motion reducing apparatus for reducing rolling, pitching and yawing motions of a ship.
- the swinging motion reducing apparatus includes a motor, a flywheel that is driven by the motor, a gimbal mechanism that contains the flywheel, a support section for movably supporting the gimbal mechanism, a frictional damper for controlling a motion of the gimbal mechanism, a power supply for supplying electric power to the motor, and a control section.
- the control section controls such that the power supply to the motor is stopped to prevent the swinging motion reducing apparatus from being damaged because of the motion of the gimbal mechanism exceeding a limitation of the specification.
- An object of the present invention is to prevent a swinging motion reducing apparatus for a ship from being damaged.
- a swing motion reducing apparatus for a ship includes a flywheel, a gimbal mechanism configured to rotatably support the flywheel, a motor configured to rotate the flywheel based on a drive power to be supplied; and a motor driver configured to supply the drive power to the motor.
- a damper section is configured to brake a swing motion of the gimbal mechanism.
- a safety unit controls the motor driver to stop the supply of the drive power to the motor when a temperature of the damper section is equal to or higher than a predetermined temperature.
- FIG. 1 is a diagram schematically showing a swinging motion reducing apparatus for a ship according to a first embodiment of the present invention
- FIG. 2 is a cross-section view of the swinging motion reducing apparatus body
- FIG. 3 is a diagram schematically showing the swinging motion reducing apparatus according to a second embodiment of the present invention.
- a swinging motion reducing apparatus includes a swinging motion reducing apparatus body 10 , a motor driver 20 , a generator 30 , and a safety unit 40 .
- the swinging motion reducing apparatus body, 10 includes a motor 13 , a damper 15 A, and a damper 15 B.
- the generator 30 and the motor 13 are a 3-phase generator and a 3-phase motor, respectively.
- the motor driver 20 includes an input terminal 21 , an output terminal 22 , a CM terminal 23 , an X1 terminal 24 , and a relay 25 .
- the input terminal 21 includes an R terminal, an S terminal, and a T terminal.
- the output terminal 22 includes a U terminal, a V terminal, and a W terminal.
- the relay 25 is provided between the input terminal 21 and the output terminal 22 .
- the relay 25 opens and closes a connection between the R terminal and the U terminal, a connection between the S terminal and the V terminal, and a connection between the T terminal and the W terminal.
- the input terminal 21 is connected to the generator 30 via a breaker switch 31 .
- the output terminal 22 is connected to a power cable 13 a of the motor 13 .
- the safety unit 40 includes a bimetal switch 41 A provided for the damper 15 A and a bimetal switch 41 B provided for the damper 15 B.
- the bimetal switches 41 A and 41 B are in a close state initially, and monitor temperatures of the dampers 15 A and 15 B, respectively.
- the bimetal switch 41 A opens to set an OFF state when a temperature of the damper 15 A increase to a temperature equal to or higher than a predetermined temperature.
- the bimetal switch 41 B opens to set an OFF state when the temperature of the damper 15 B increase to a temperature equal to or higher than a predetermined temperature.
- the CM terminal 23 is connected to the X1 terminal 24 via the bimetal switches 41 A and 41 B.
- the connection between the CM terminal 23 and the X1 terminal 24 is in an ON state (a conduction state) when both of the bimetal switches 41 A and 41 B close, and the connection between the CM terminal 23 and the X1 terminal 24 is in an OFF state (a non-conduction state) when at least one of the bimetal switches 41 A and 41 B opens.
- the relay 25 turns the connection between the input terminal 21 and the output terminal 22 to be in the ON state (closes the connection between the input terminal 21 and the output terminal 22 ) when the connection between the CM terminal 23 and the X1 terminal 24 is in the ON state. Also, the relay 25 turns the connection between the input terminal 21 and the output terminal 22 to be in the OFF state (opens the connection between the input terminal 21 and the output terminal 22 ) when the connection between the CM terminal 23 and the X1 terminal 24 is in the OFF state.
- the motor driver 20 supplies a drive power to the motor 13 when the relay 25 keeps the connection between the input terminal 21 and the output terminal 22 in the ON state, and stops the supply of the drive power when the relay 25 turns the connection between the input terminal 21 and the output terminal 22 to be in the OFF state.
- the swinging motion reducing apparatus body 10 includes the flywheel 11 , the gimbal mechanism 12 , the motor 13 , a gimbal mechanism support section 14 , and the dampers 15 A and 15 B.
- the gimbal mechanism 12 supports the flywheel 11 so that the flywheel 11 can rotate around a rotation axis S 1 .
- the motor 13 drives the flywheel 11 .
- the gimbal mechanism support section 14 supports the gimbal mechanism 12 so that the gimbal mechanism 12 can swing around a swing axis S 2 .
- Each of the dampers 15 A and 15 B brakes the swinging motion of the gimbal mechanism 12 with a fluid resistance of a hydraulic oil.
- the dampers 15 A and 15 B are rotary dampers.
- the swing axis S 2 is orthogonal to the rotation axis S 1 .
- the gimbal mechanism support section 14 is fixed to a hull.
- the bimetal switches 41 A and 41 B are attached to the outer sides of the dampers 15 A and 15 B, respectively.
- a principle that the swinging motion reducing apparatus according to the present embodiment reduces the swinging motion of a ship will be described by exemplifying a case that a left or right direction axis (Pitch axis) of the hull is parallel to the swing axis S 2 .
- the flywheel 11 is driven by the motor 13 at a high speed so as to have angular momentum H.
- a gyrotorque T 1 represented by an exterior product of the angular momentum H and the angular velocity ⁇ acts to the gimbal mechanism 12 , and the gimbal mechanism 12 rolls around the swing axis S 2 .
- a counter torque T 2 acts to the hull via the gimbal mechanism support section 14 .
- the counter torque T 2 is represented by an exterior product of the angular momentum H and the angular velocity ⁇ . Because the counter torque T 2 acts to a direction opposite to the roll direction of the hull, the rolling motion in the roll direction of the hull is reduced.
- the swinging motion reducing apparatus when used under an overload circumstance such as a case where a ship having the swinging motion reducing apparatus according to the present embodiment sails a high wave area, the gimbal mechanism 12 heavily swings so that the temperatures of the dampers 15 A and 15 B become high, and thus a seal member for sealing the hydraulic oil may be damaged. Since the gimbal mechanism 12 cannot be broken when the hydraulic oil leaks, the swinging motion reducing apparatus may be damaged.
- the bimetal switch 41 A opens to turn the connection between the CM terminal 23 and the X1 terminal 24 to be in the OFF state. Then, since the relay 25 turns the connection between the input terminal 21 and the output terminal 22 to be in the OFF state, the motor driver 20 automatically stops the supply of the drive power. Also, when the temperature of the damper 15 B increases the predetermined temperature or more, the motor driver 20 automatically stops the supply of the drive power in the same manner as that of the damper 15 A. That is, the safety unit 40 stops the supply of the drive power to the motor driver 20 when at least one of the dampers 15 A and 15 B exceeds the predetermined temperature. In this manner, the swinging motion reducing apparatus body 10 safely stops and the dampers 15 A and 15 B can be prevented from being damaged.
- the temperatures of the damper 15 A or 15 B becomes high.
- the present embodiment prevents the swinging motion reducing apparatus from continuing to operate under the condition of occurrence of the failure of the damper 15 A or 15 B. Accordingly, the damage of the damper 15 A or 15 B can be prevented and the damage of the swinging motion reducing apparatus body 10 is prevented.
- the damper 15 A or 15 B cannot release the heat to circumference, and accordingly a braking performance of the damper 15 A or 15 B deteriorates.
- the swinging motion reducing apparatus body 10 may be damaged. According to the present embodiment, since the swinging motion reducing apparatus is stopped in the case of a high atmosphere temperature, the damage of the swinging motion reducing apparatus body 10 can be prevented.
- the bimetal switches 41 A and 41 B are respectively arranged on the outer sides of the dampers 15 A and 15 B, the swinging motion reducing apparatus can be easily assembled. Meanwhile, the bimetal switches 41 A and 41 B may be arranged in the dampers 15 A and 15 B, respectively.
- the swinging motion reducing apparatus for a ship according to a second embodiment of the present invention will be described.
- the swinging motion reducing apparatus according to the second embodiment of the present invention is configured by replacing the safety unit 40 in the first embodiment with a safety unit 50 .
- the safety unit 50 includes temperature sensors 51 A and 51 B such as a thermocouple or a thermistor, and a determining section 52 .
- the temperature sensors 51 A and 51 B are provided for the dampers 15 A and 15 B, respectively.
- the temperature sensor 51 A monitors a temperature of the damper 15 A and outputs a signal indicating the temperature of the damper 15 A to the determining section 52 .
- the temperature sensor 51 B monitors a temperature of the damper 15 B and outputs a signal indicating the temperature of the damper 15 B to the determining section 52 .
- the determining section 52 is connected to the CM terminal 23 and the X1 terminal 24 , respectively.
- the determining section 52 determines whether or not the temperatures indicated by the signals sent from the temperature sensors 51 A and 51 B are higher than a predetermined temperature. When both of the signal sent from the temperature sensor 51 A and the signal sent from the temperature sensor 51 B indicate a temperature lower than the predetermined temperature, the determining section 52 turns the connection between the CM terminal 23 and the X1 terminal 24 to be in the ON state.
- the determining section 52 turns the connection between the CM terminal 23 and the X1 terminal 24 to be in the OFF state. Accordingly, when at least one of the dampers 15 A and 15 B exceeds the predetermined temperature, the safety unit 50 stops the supply of the drive power to the motor 13 .
- the temperature sensors 51 A and 51 B are arranged on the outer sides of the dampers 15 A and 15 B, the swinging motion reducing apparatus can be easily assembled. Meanwhile, the temperature sensors 51 A and 51 B may be arranged in the dampers 15 A and 15 B, respectively.
- the generator 30 and the motor 13 may be a single-phase generator and a single-phase motor, respectively.
- the dampers 15 A and 15 B may be a frictional damper, a linear damper, or a hydraulic pump.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Vibration Prevention Devices (AREA)
- Fluid-Pressure Circuits (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
In a swing motion reducing apparatus for a ship includes a flywheel, a gimbal mechanism configured to rotatably support the flywheel, a motor configured to rotate the flywheel based on a drive power to be supplied; and a motor driver configured to supply the drive power to the motor. A damper section is configured to brake a swing motion of the gimbal mechanism. A safety unit controls the motor driver to stop the supply of the drive power to the motor when a temperature of the damper section is equal to or higher than a predetermined temperature.
Description
- This patent application claims a priority on convention based on Japanese Patent Application No. 2009-103158. The disclosure thereof is incorporated herein by reference.
- 1. Field of the Invention
- The present invention relates to an apparatus for reducing a swinging motion of a ship such as a rolling motion, a pitching motion and a yawing motion.
- 2. Description of Related Art
- Japanese Patent No. 3,556,857 discloses a swinging motion reducing apparatus for reducing rolling, pitching and yawing motions of a ship. The swinging motion reducing apparatus includes a motor, a flywheel that is driven by the motor, a gimbal mechanism that contains the flywheel, a support section for movably supporting the gimbal mechanism, a frictional damper for controlling a motion of the gimbal mechanism, a power supply for supplying electric power to the motor, and a control section. When the gimbal mechanism rolls at a predetermined angle or more, the control section controls such that the power supply to the motor is stopped to prevent the swinging motion reducing apparatus from being damaged because of the motion of the gimbal mechanism exceeding a limitation of the specification.
- An object of the present invention is to prevent a swinging motion reducing apparatus for a ship from being damaged.
- In an aspect of the present invention, a swing motion reducing apparatus for a ship includes a flywheel, a gimbal mechanism configured to rotatably support the flywheel, a motor configured to rotate the flywheel based on a drive power to be supplied; and a motor driver configured to supply the drive power to the motor. A damper section is configured to brake a swing motion of the gimbal mechanism. A safety unit controls the motor driver to stop the supply of the drive power to the motor when a temperature of the damper section is equal to or higher than a predetermined temperature.
- According to the present invention, damage of a swinging motion reducing apparatus for a ship is prevented.
-
FIG. 1 is a diagram schematically showing a swinging motion reducing apparatus for a ship according to a first embodiment of the present invention; -
FIG. 2 is a cross-section view of the swinging motion reducing apparatus body; and -
FIG. 3 is a diagram schematically showing the swinging motion reducing apparatus according to a second embodiment of the present invention. - Hereinafter, a swinging motion reducing apparatus for a ship according to the present invention will be described with reference to the attached drawings.
- As shown in
FIG. 1 , a swinging motion reducing apparatus according to a first embodiment of the present invention includes a swinging motion reducingapparatus body 10, amotor driver 20, agenerator 30, and asafety unit 40. The swinging motion reducing apparatus body, 10 includes amotor 13, adamper 15A, and adamper 15B. Thegenerator 30 and themotor 13 are a 3-phase generator and a 3-phase motor, respectively. Themotor driver 20 includes aninput terminal 21, anoutput terminal 22, aCM terminal 23, anX1 terminal 24, and arelay 25. Theinput terminal 21 includes an R terminal, an S terminal, and a T terminal. Theoutput terminal 22 includes a U terminal, a V terminal, and a W terminal. Therelay 25 is provided between theinput terminal 21 and theoutput terminal 22. Therelay 25 opens and closes a connection between the R terminal and the U terminal, a connection between the S terminal and the V terminal, and a connection between the T terminal and the W terminal. Theinput terminal 21 is connected to thegenerator 30 via abreaker switch 31. Theoutput terminal 22 is connected to apower cable 13 a of themotor 13. - The
safety unit 40 includes abimetal switch 41A provided for thedamper 15A and abimetal switch 41B provided for thedamper 15B. Thebimetal switches dampers bimetal switch 41A opens to set an OFF state when a temperature of thedamper 15A increase to a temperature equal to or higher than a predetermined temperature. Thebimetal switch 41B opens to set an OFF state when the temperature of thedamper 15B increase to a temperature equal to or higher than a predetermined temperature. TheCM terminal 23 is connected to theX1 terminal 24 via thebimetal switches bimetal switches CM terminal 23 and theX1 terminal 24 is in an ON state (a conduction state) when both of thebimetal switches CM terminal 23 and theX1 terminal 24 is in an OFF state (a non-conduction state) when at least one of thebimetal switches - The
relay 25 turns the connection between theinput terminal 21 and theoutput terminal 22 to be in the ON state (closes the connection between theinput terminal 21 and the output terminal 22) when the connection between theCM terminal 23 and theX1 terminal 24 is in the ON state. Also, therelay 25 turns the connection between theinput terminal 21 and theoutput terminal 22 to be in the OFF state (opens the connection between theinput terminal 21 and the output terminal 22) when the connection between theCM terminal 23 and theX1 terminal 24 is in the OFF state. - The
motor driver 20 supplies a drive power to themotor 13 when therelay 25 keeps the connection between theinput terminal 21 and theoutput terminal 22 in the ON state, and stops the supply of the drive power when therelay 25 turns the connection between theinput terminal 21 and theoutput terminal 22 to be in the OFF state. - As shown in
FIG. 2 , the swinging motion reducingapparatus body 10 includes theflywheel 11, thegimbal mechanism 12, themotor 13, a gimbalmechanism support section 14, and thedampers gimbal mechanism 12 supports theflywheel 11 so that theflywheel 11 can rotate around a rotation axis S1. Themotor 13 drives theflywheel 11. The gimbalmechanism support section 14 supports thegimbal mechanism 12 so that thegimbal mechanism 12 can swing around a swing axis S2. Each of thedampers gimbal mechanism 12 with a fluid resistance of a hydraulic oil. For example, thedampers mechanism support section 14 is fixed to a hull. Thebimetal switches dampers - A principle that the swinging motion reducing apparatus according to the present embodiment reduces the swinging motion of a ship will be described by exemplifying a case that a left or right direction axis (Pitch axis) of the hull is parallel to the swing axis S2. The
flywheel 11 is driven by themotor 13 at a high speed so as to have angular momentum H. When the hull receives a wave in a direction of a roll axis to roll at an angular velocity Ω, a gyrotorque T1 represented by an exterior product of the angular momentum H and the angular velocity Ω acts to thegimbal mechanism 12, and thegimbal mechanism 12 rolls around the swing axis S2. At this time, since theflywheel 11 works to maintain the angular momentum H, a counter torque T2 acts to the hull via the gimbalmechanism support section 14. When an angular velocity of the swinging motion of thegimbal mechanism 12 is ω, the counter torque T2 is represented by an exterior product of the angular momentum H and the angular velocity ω. Because the counter torque T2 acts to a direction opposite to the roll direction of the hull, the rolling motion in the roll direction of the hull is reduced. - For example, when the swinging motion reducing apparatus is used under an overload circumstance such as a case where a ship having the swinging motion reducing apparatus according to the present embodiment sails a high wave area, the
gimbal mechanism 12 heavily swings so that the temperatures of thedampers gimbal mechanism 12 cannot be broken when the hydraulic oil leaks, the swinging motion reducing apparatus may be damaged. - Referring to
FIG. 1 , when the temperature of thedamper 15A increases the predetermined temperature or more, thebimetal switch 41A opens to turn the connection between theCM terminal 23 and theX1 terminal 24 to be in the OFF state. Then, since therelay 25 turns the connection between theinput terminal 21 and theoutput terminal 22 to be in the OFF state, themotor driver 20 automatically stops the supply of the drive power. Also, when the temperature of thedamper 15B increases the predetermined temperature or more, themotor driver 20 automatically stops the supply of the drive power in the same manner as that of thedamper 15A. That is, thesafety unit 40 stops the supply of the drive power to themotor driver 20 when at least one of thedampers apparatus body 10 safely stops and thedampers - Additionally, in case of occurrence of a failure of the
damper damper damper damper apparatus body 10 is prevented. - Moreover, when an atmosphere temperature around the swinging motion reducing
apparatus body 10 is high, thedamper damper damper apparatus body 10 may be damaged. According to the present embodiment, since the swinging motion reducing apparatus is stopped in the case of a high atmosphere temperature, the damage of the swinging motion reducingapparatus body 10 can be prevented. - Since the
bimetal switches dampers bimetal switches dampers - Referring to
FIG. 3 , the swinging motion reducing apparatus for a ship according to a second embodiment of the present invention will be described. The swinging motion reducing apparatus according to the second embodiment of the present invention is configured by replacing thesafety unit 40 in the first embodiment with asafety unit 50. Thesafety unit 50 includestemperature sensors section 52. Thetemperature sensors dampers temperature sensor 51A monitors a temperature of thedamper 15A and outputs a signal indicating the temperature of thedamper 15A to the determiningsection 52. Thetemperature sensor 51B monitors a temperature of thedamper 15B and outputs a signal indicating the temperature of thedamper 15B to the determiningsection 52. The determiningsection 52 is connected to theCM terminal 23 and theX1 terminal 24, respectively. The determiningsection 52 determines whether or not the temperatures indicated by the signals sent from thetemperature sensors temperature sensor 51A and the signal sent from thetemperature sensor 51B indicate a temperature lower than the predetermined temperature, the determiningsection 52 turns the connection between theCM terminal 23 and theX1 terminal 24 to be in the ON state. When the temperature indicated by at least one of the signal sent from thetemperature sensor 51A and the signal sent from thetemperature sensor 51B exceeds the predetermined temperature, the determiningsection 52 turns the connection between theCM terminal 23 and theX1 terminal 24 to be in the OFF state. Accordingly, when at least one of thedampers safety unit 50 stops the supply of the drive power to themotor 13. - When the
temperature sensors dampers temperature sensors dampers - In the above-mentioned respective embodiments, the
generator 30 and themotor 13 may be a single-phase generator and a single-phase motor, respectively. In addition, thedampers
Claims (5)
1. A swing motion reducing apparatus for a ship comprising:
a flywheel;
a gimbal mechanism configured to rotatably support said flywheel;
a motor configured to rotate said flywheel based on a drive power to be supplied;
a motor driver configured to supply the drive power to said motor;
a damper section configured to brake a swing motion of said gimbal mechanism; and
a safety unit configured to control said motor driver to stop the supply of the drive power to said motor when a temperature of said damper section is equal to or higher than a predetermined temperature.
2. The swing motion reducing apparatus according to claim 1 , wherein said motor driver comprises first and second terminals,
wherein said safety unit comprises a path from said first terminal to said second terminal, and
said motor driver supplies the drive power to said motor when said path is in an ON state, and stops the supply of the drive power to said motor when said path is in an OFF state.
3. The swing motion reducing apparatus according to claim 2 , wherein said damper section comprises a first damper configured to brake the swing motion of said gimbal mechanism,
said safety unit comprises a first bimetal switch provided for said first damper in said path, and
said first bimetal switch sets said path to the ON state when the temperature of said first damper lower than the predetermined temperature and sets said path to the OFF state when the temperature of said first damper equal to or higher than the predetermined temperature.
4. The swing motion reducing apparatus according to claim 3 , wherein said damper section comprises a second damper configured to brake the swing motion of said gimbal mechanism,
wherein said safety unit further comprises a second bimetal switch provided for said second damper in said path and connected with said first bimetal switch in series, and
said second bimetal switch sets said path to the ON state when the temperature of said second damper lower than the predetermined temperature and sets said path to the OFF state when the temperature of said second damper equal to or higher than the predetermined temperature.
5. The swing motion reducing apparatus according to claim 2 , wherein said damper section comprises first and second dampers, each of which brakes the swing motion of said gimbal mechanism;
said safety unit further comprises:
first and second temperature sensors provided for said first and second dampers to detect temperatures of said first and second dampers, respectively; and
a determining section sets said path to the ON state, when both of temperatures detected by said first and second temperature sensors are lower than the predetermined temperature, and sets said path to the OFF state, when at least one of temperatures detected by said first and second temperature sensors is equal to or higher than the predetermined temperature.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009103158A JP4782216B2 (en) | 2009-04-21 | 2009-04-21 | Ship vibration reduction device |
JP2009-103158 | 2009-04-21 |
Publications (1)
Publication Number | Publication Date |
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US20110030604A1 true US20110030604A1 (en) | 2011-02-10 |
Family
ID=42270174
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/696,687 Abandoned US20110030604A1 (en) | 2009-04-21 | 2010-01-29 | Swing motion reducing apparatus for ship |
Country Status (7)
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US (1) | US20110030604A1 (en) |
EP (1) | EP2243697B1 (en) |
JP (1) | JP4782216B2 (en) |
AU (1) | AU2010200361B2 (en) |
ES (1) | ES2412269T3 (en) |
NZ (1) | NZ583020A (en) |
TW (1) | TWI383920B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8776709B2 (en) | 2012-06-22 | 2014-07-15 | Honeywell International Inc. | Apparatus and method for watercraft stabilization |
US20140245939A1 (en) * | 2013-03-04 | 2014-09-04 | Mitsubishi Heavy Industries, Ltd. | Swinging motion reducing apparatus and ship using the same |
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JPH10244990A (en) * | 1997-03-05 | 1998-09-14 | Mitsubishi Heavy Ind Ltd | Gyro type anti-rocking device |
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2009
- 2009-04-21 JP JP2009103158A patent/JP4782216B2/en active Active
-
2010
- 2010-01-29 US US12/696,687 patent/US20110030604A1/en not_active Abandoned
- 2010-01-29 EP EP10152137A patent/EP2243697B1/en active Active
- 2010-01-29 ES ES10152137T patent/ES2412269T3/en active Active
- 2010-01-29 TW TW099102749A patent/TWI383920B/en active
- 2010-02-01 AU AU2010200361A patent/AU2010200361B2/en active Active
- 2010-02-01 NZ NZ583020A patent/NZ583020A/en unknown
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US1183530A (en) * | 1910-01-04 | 1916-05-16 | Louis Brennan | Means for imparting stability to unstable bodies. |
US3576134A (en) * | 1968-02-19 | 1971-04-27 | Tetra Tech | Gyroscopic stabilizer having an adjustable spring |
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Publication number | Priority date | Publication date | Assignee | Title |
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US8776709B2 (en) | 2012-06-22 | 2014-07-15 | Honeywell International Inc. | Apparatus and method for watercraft stabilization |
US20140245939A1 (en) * | 2013-03-04 | 2014-09-04 | Mitsubishi Heavy Industries, Ltd. | Swinging motion reducing apparatus and ship using the same |
US9452810B2 (en) * | 2013-03-04 | 2016-09-27 | Tohmei Industries Co., Ltd. | Rolling motion reducing apparatus for a ship |
Also Published As
Publication number | Publication date |
---|---|
JP4782216B2 (en) | 2011-09-28 |
AU2010200361A1 (en) | 2010-11-04 |
JP2010256042A (en) | 2010-11-11 |
NZ583020A (en) | 2011-06-30 |
AU2010200361B2 (en) | 2011-04-21 |
EP2243697A2 (en) | 2010-10-27 |
EP2243697A3 (en) | 2011-11-30 |
EP2243697B1 (en) | 2013-03-13 |
TW201040075A (en) | 2010-11-16 |
ES2412269T3 (en) | 2013-07-10 |
TWI383920B (en) | 2013-02-01 |
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