WO2004028903A1 - Tractor, particularly for towing aircraft - Google Patents

Tractor, particularly for towing aircraft Download PDF

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Publication number
WO2004028903A1
WO2004028903A1 PCT/IT2003/000569 IT0300569W WO2004028903A1 WO 2004028903 A1 WO2004028903 A1 WO 2004028903A1 IT 0300569 W IT0300569 W IT 0300569W WO 2004028903 A1 WO2004028903 A1 WO 2004028903A1
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WO
WIPO (PCT)
Prior art keywords
tractor
pair
tow bar
towing
tow
Prior art date
Application number
PCT/IT2003/000569
Other languages
French (fr)
Inventor
Roberto Maggiori
Original Assignee
Roberto Maggiori
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 Roberto Maggiori filed Critical Roberto Maggiori
Priority to AU2003274708A priority Critical patent/AU2003274708A1/en
Publication of WO2004028903A1 publication Critical patent/WO2004028903A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64F—GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT; DESIGNING, MANUFACTURING, ASSEMBLING, CLEANING, MAINTAINING OR REPAIRING AIRCRAFT, NOT OTHERWISE PROVIDED FOR; HANDLING, TRANSPORTING, TESTING OR INSPECTING AIRCRAFT COMPONENTS, NOT OTHERWISE PROVIDED FOR
    • B64F1/00—Ground or aircraft-carrier-deck installations
    • B64F1/22—Ground or aircraft-carrier-deck installations for handling aircraft
    • B64F1/223—Ground or aircraft-carrier-deck installations for handling aircraft for towing aircraft
    • B64F1/224—Towing bars

Definitions

  • the present invention relates to a tractor, particularly for towing aircraft.
  • This kind of tractor is generally used for towing an aircraft away from the parking space.
  • the parking space is in front of the air terminal or at any rate so close to it that the airplane cannot move autonomously.
  • a tractor may find itself in critical conditions, for example, it may be forced to brake suddenly or it may mistakenly apply too much traction or skid on icy and/or broken paving. The resulting accelerations and decelerations can damage the front wheel of the airplane to which the tow bar is attached.
  • One object of the invention is to enable the application of a constant force to the wheel of an airplane in such a way to take account of the resistance of the wheel itself.
  • Another object of the invention is to apply an adjustable force as a function of the dimensions and weight of the airplane being towed. Yet anther object of the invention is to monitor the applied force and discontinue it if an admissible limit is exceeded.
  • Another object of the invention is to enable maneuvers to be carried out in very restricted spaces by means of an autorotation function.
  • Still another object of the invention is to give a tractor great grip on the ground.
  • the present invention provides a tractor, particularly for towing aircraft, including a driver's position with control console, propulsion means and a tow bar, in which the tow bar is equipped with a device for monitoring/controlling the applied force, in the form of a load cell, and with means for adjusting the angular position of the tow bar in the direction of application of a towing force.
  • the dependent claims set out two embodiments of means for adjusting the position of the angular bar, one by hydraulic and the other by electromechanical actuation.
  • Figure 1 is a front view of a tractor according to the present invention.
  • Figure 2 is a side view of the tractor of Figure 1;
  • Figure 3 is a top view of the tractor of Figure 1;
  • Figure 4 is a schematic top view of a first embodiment of the tow bar of the tractor according to the present invention.
  • Figure 5 is a schematic top view of a second embodiment of the tow bar of the tractor according to the present invention.
  • Figure 6 is a schematic perspective view of a control panel for the tractor according to the present invention.
  • FIG. 1 shows the general appearance of the tractor.
  • the structure of the tractor is not described in detail, but this text will refer to only certain features of the structure.
  • the tractor has a tracked system indicated as a whole by the number 1, and comprises rotating driver's position 2, a device for monitoring/controlhng the towing force 3, an electric propulsion unit 4 and a tow bar 5.
  • the tracked system 1 uses modular tracks composed elements comprising a rubber-covered steel structure.
  • the use of these tracks offers great traction capacity even on sub-optimal paving or paving affected by atmospheric agents.
  • the large contact area of the tracks used on this means gives greater stability to the tractor and improves its handling, allowing it to move twice as much as conventional wheeled vehicles.
  • the tractor can be spun on the spot by turning its tracks in opposite directions.
  • the rotating driver's position 2 comprises a platform which, by means of a direct-current motor/gearbox assembly rotates 180° in both directions of rotation. It thus allows the operator, who is situated in the center of the platform, to complete the towing operation with a single maneuver of approach without having to advance in reverse, which is very dangerous if there is no visibility.
  • control panel Inside the driver's position is a control panel or console 6 shown in Figure 6.
  • the control panel which will be described in greater detail below, acts on the device 3 for monitoring/controlhng the towing force and on the tow bar 5.
  • the device 3 for monitoring/controlhng the towing force uses a load cell managed by a digital electronic unit located upstream of the tow bar, that is between the tow bar and the actual tractor. This makes it possible to vary and monitor the force applied to the airplane hitched to the tow bar for maneuvering and intervenes up to an adjustable alarm threshold to stop the tractor in order to prevent structural damage to the airplane.
  • the monitoring/controlling device 3 acts directly on the power board of the electric propulsion unit 4 in response to the data produced by the load cell.
  • the electric propulsion unit 4 consists of two or more electric motors operating with a direct current or alternating current with an inverter. They are powered by batteries recharged by an electric generating set driven by an internal-combustion engine. The internal-combustion engine is engaged for recharging either automatically or manually. The tractor can therefore be used even in closed environments, such as hangars and sheds, to comply with pollution requirements.
  • the tow bar 5 is shown in its two embodiments, denoted 5a and 5b.
  • FIG 4 which is a schematic view of a first embodiment of the tow bar
  • a tow bar 5a consisting of a variable- geometry hydraulic system.
  • the tow bar 5a comprises a drawbar 7 assisted by two opposed double- acting hydraulic cylinders 8, 8, a pair of front bi-directional adjustable valves 9, 9 and a pair of rear bi-directional adjustable valves 10, 10, a two way electrically operated valve 11, a sensor 12, a mobile post device for attaching the drawbar 13 to, a pair of return springs 14, 14 for returning the mobile post, an oil reservoir 15 and a check valve 16.
  • the ends of the piston rods 8a, 8a are hinged to opposite sides of the drawbar 7, so that when one rod is extended, the opposite rod is retracted in such a way as to rotate the drawbar 7 in one direction or the other.
  • the mobile post 13 has the function, through the sensor 12, of instantaneously locking the drawbar in the position it was in at the moment of towing.
  • This embodiment of the tow bar makes the tractor easier to steer while towing by reducing the effort.
  • FIG. 5 is a schematic view of a second embodiment of the tow bar, this consists of a variable-geometry electric system.
  • the tow bar 5b comprises an eye 18, a tow rod 9, a transverse movement carriage 20, a guide slot 21, a motor/gearbox assembly 22, a screw-and-nut pair 30, 23, a load cell 24, a pair of return springs 25, a first pair of proximity sensors 26, a second pair of proximity sensors 27, and an axial guide 28.
  • the tow eye 18 is connected to the tow rod 19 passing through the axial guide 28 in the transverse-movement carriage 20.
  • the tow rod 19 projects out of the transverse-movement carriage 20 in the direction of the tractor, and a load cell 24 is at the tractor end of this rod.
  • the load cell 24 is provided at its ends with joints (not indicated by reference numbers).
  • the joint furthest from the tow rod 19 is connected to the screw-and-nut 23 driven by the motor/gearbox assembly 22.
  • the tow rod 19, in the rest condition is kept in the center by the opposing return springs 25, 25.
  • the relevant one of the two proximity sensors 26 sends a signal to the motor/gearbox assembly 22 to move, through the screw- and-nut 30, 23, the tow rod 19.
  • transverse-movement carriage 20 moves in the direction in which the load is acting.
  • the arrangement described above makes it possible to apply the center of rotation of the load from the eye 18 toward the front part of the tractor. Specifically, due to the movement of the transverse-movement carriage 20 along the guide slot 21 by means of the proximity sensors 26, 26 operating the motor/gearbox assembly 22, the center of rotation of the tow bar 5b is always kept on the center of curvature of the guide slot 21.
  • tow bar in particular 5b shown in Figure 5, can be described as of variable geometry, meaning that the angular movement of the bar is a function of the direction of application of the towed load.
  • this shows the control panel or console 6, which is situated inside the rotating driver's position. It makes it possible to perform all the functions of forward and reverse travel, change of direction and autorotation.
  • the control panel comprises a device 31 for monitoring/ controlling the force applied by the tractor, including an electronic unit for entering the data about the type of aircraft to be towed, a key-operated selector 32, indicator lamps 33, an autorotation selector 34, a control stick 35 which enables forward/reverse and the gear changes in all directions, and a revolving position selector 36, which makes it possible to rotate the position of the operator in both directions of travel.
  • tow bar of the variable-geometry type, meaning the angular movement of the bar as a function of the direction of application of the towed load, increased the stability of the towing action by locating its point of application near the tractor's center of gravity.
  • a variable -geometry tow bar of this kind makes for easier maneuvering especially in restricted spaces.
  • the presence of the load cell on the tow bar enables the applied force to be monitored and towing to be stopped before the maximum admissible limit is exceeded.
  • the applied force is determined on the basis of the resistance of the wheel of the airplane that is to be towed, so as to tow with the correct acceleration.
  • the tracked tractor is capable of maneuvering in very restricted spaces because of the function of autorotation which is typical of tracked systems.
  • the tractor can rotate on itself even while towing. There is no sudden jerking either while pulling or when slowing down, even on slippery paving, owing to the use of strong rubber tracks.
  • the tractor according to the invention is easy to maneuver because the rotating driver's position makes it unnecessary to advance in reverse gear.
  • the tractor according to the present invention can be equipped with a variety of accessories and devices that would be useful in a wide variety of operational situations.
  • it can be equipped with a camera observing the radius of action of the tow bar when hitched to the vehicle.
  • the batteries that drive the electric motors of the unit for propulsion and rotation of the driver's cabin can be recharged by an internal-combustion electric generating set situated in the tractor itself and capable of converting and generating direct and oscillating current for use off site by automatic or manual actuation.
  • This electric generating set can supply emergency electric power and emergency start-up power.
  • the tractor can be equipped with an electric air compressor for general off-runway use.
  • the tractor according to the invention can be equipped with an electric winch for general off-runway use or for the vehicle itself.
  • the propulsion unit may also be a hybrid drive made up on an internal-combustion engine and electric motors for use as alternatives.
  • the tractor according to the invention could also be fitted with tired wheels instead of the tracked system.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Lifting Devices For Agricultural Implements (AREA)

Abstract

A tractor for towing aircraft comprises a driver's position (2) with control console (6), propulsion means (4), and a tow bar (5a; 5b) equipped with a device (3) for monitoring/controlling the applied force, in the form of a load cell, and with means for adjusting the angular position of the tow bar in the direction of application of a towing force.

Description

Tractor, particularly for towing aircraft
Field of the Invention
The present invention relates to a tractor, particularly for towing aircraft.
This kind of tractor is generally used for towing an aircraft away from the parking space. The parking space is in front of the air terminal or at any rate so close to it that the airplane cannot move autonomously. In this kind of maneuver a tractor may find itself in critical conditions, for example, it may be forced to brake suddenly or it may mistakenly apply too much traction or skid on icy and/or broken paving. The resulting accelerations and decelerations can damage the front wheel of the airplane to which the tow bar is attached.
Description of the Prior Art
At the present time in both military and civil use tractors for aircraft are usually wheeled and in the majority of cases use internal- combustion propulsion systems.
These tractors, though having good handling capacity, present certain problems especially as regards maneuvering in restricted spaces, as they are very large, and as regards the way they initiate towing.
It is an object of the present invention to overcome the abovementioned problems.
One object of the invention is to enable the application of a constant force to the wheel of an airplane in such a way to take account of the resistance of the wheel itself.
Another object of the invention is to apply an adjustable force as a function of the dimensions and weight of the airplane being towed. Yet anther object of the invention is to monitor the applied force and discontinue it if an admissible limit is exceeded.
Another object of the invention is to enable maneuvers to be carried out in very restricted spaces by means of an autorotation function.
Still another object of the invention is to give a tractor great grip on the ground.
Description of the Invention
The present invention provides a tractor, particularly for towing aircraft, including a driver's position with control console, propulsion means and a tow bar, in which the tow bar is equipped with a device for monitoring/controlling the applied force, in the form of a load cell, and with means for adjusting the angular position of the tow bar in the direction of application of a towing force.
The dependent claims set out two embodiments of means for adjusting the position of the angular bar, one by hydraulic and the other by electromechanical actuation.
Brief Description of the Drawings
The present invention will now be described with reference to certain preferred embodiments of it, while understanding that variants may be produced without thereby departing from the scope of protection of the present invention, reference being made to the figures of the attached drawing, in which:
Figure 1 is a front view of a tractor according to the present invention;
Figure 2 is a side view of the tractor of Figure 1; Figure 3 is a top view of the tractor of Figure 1;
Figure 4 is a schematic top view of a first embodiment of the tow bar of the tractor according to the present invention;
Figure 5 is a schematic top view of a second embodiment of the tow bar of the tractor according to the present invention; and
Figure 6 is a schematic perspective view of a control panel for the tractor according to the present invention.
Preferred Embodiments of the Invention
Referring to the drawings, Figures 1, 2 and 3 show the general appearance of the tractor. The structure of the tractor is not described in detail, but this text will refer to only certain features of the structure. The tractor has a tracked system indicated as a whole by the number 1, and comprises rotating driver's position 2, a device for monitoring/controlhng the towing force 3, an electric propulsion unit 4 and a tow bar 5.
The tracked system 1 uses modular tracks composed elements comprising a rubber-covered steel structure. The use of these tracks offers great traction capacity even on sub-optimal paving or paving affected by atmospheric agents. The large contact area of the tracks used on this means gives greater stability to the tractor and improves its handling, allowing it to move twice as much as conventional wheeled vehicles.
Like all tractor vehicles, the tractor can be spun on the spot by turning its tracks in opposite directions.
The rotating driver's position 2 comprises a platform which, by means of a direct-current motor/gearbox assembly rotates 180° in both directions of rotation. It thus allows the operator, who is situated in the center of the platform, to complete the towing operation with a single maneuver of approach without having to advance in reverse, which is very dangerous if there is no visibility.
Inside the driver's position is a control panel or console 6 shown in Figure 6. The control panel, which will be described in greater detail below, acts on the device 3 for monitoring/controlhng the towing force and on the tow bar 5.
The device 3 for monitoring/controlhng the towing force, shown with reference to Figure 5, uses a load cell managed by a digital electronic unit located upstream of the tow bar, that is between the tow bar and the actual tractor. This makes it possible to vary and monitor the force applied to the airplane hitched to the tow bar for maneuvering and intervenes up to an adjustable alarm threshold to stop the tractor in order to prevent structural damage to the airplane. The monitoring/controlling device 3 acts directly on the power board of the electric propulsion unit 4 in response to the data produced by the load cell.
The electric propulsion unit 4 consists of two or more electric motors operating with a direct current or alternating current with an inverter. They are powered by batteries recharged by an electric generating set driven by an internal-combustion engine. The internal-combustion engine is engaged for recharging either automatically or manually. The tractor can therefore be used even in closed environments, such as hangars and sheds, to comply with pollution requirements.
The tow bar 5 is shown in its two embodiments, denoted 5a and 5b.
Referring to Figure 4, which is a schematic view of a first embodiment of the tow bar, this shows a tow bar 5a consisting of a variable- geometry hydraulic system. The tow bar 5a comprises a drawbar 7 assisted by two opposed double- acting hydraulic cylinders 8, 8, a pair of front bi-directional adjustable valves 9, 9 and a pair of rear bi-directional adjustable valves 10, 10, a two way electrically operated valve 11, a sensor 12, a mobile post device for attaching the drawbar 13 to, a pair of return springs 14, 14 for returning the mobile post, an oil reservoir 15 and a check valve 16. The ends of the piston rods 8a, 8a are hinged to opposite sides of the drawbar 7, so that when one rod is extended, the opposite rod is retracted in such a way as to rotate the drawbar 7 in one direction or the other.
This drawbar works in the following way. When the drawbar 7 is at rest, the springs 14, 14 apply equal force between the mobile post 13 and a stop element 17 which is fixed perpendicularly to the drawbar 7. Therefore, the sensor 12 which is in the normal or open condition deenergizes the electrically operated valve 11. Consequently the hydraulic circuit connected to the lower part (lower in the figure) of the hydraulic cylinders 8, 8 stays closed and the position of the drawbar is rigidly maintained. While towing, the sensor 12 is activated by the forced movement of the drawbar toward the opposing springs. The electrically operated valve 11 therefore opens, allowing the movement of oil in the two directions controlled by the front and rear bidirectional valves 9, 9 and 10, 10, which may be adjusted as appropriate. The force moving the drawbar is controlled by these valves. In the event of sudden braking or deceleration, the mobile post 13 has the function, through the sensor 12, of instantaneously locking the drawbar in the position it was in at the moment of towing. This embodiment of the tow bar makes the tractor easier to steer while towing by reducing the effort.
Referring to Figure 5, which is a schematic view of a second embodiment of the tow bar, this consists of a variable-geometry electric system. The tow bar 5b comprises an eye 18, a tow rod 9, a transverse movement carriage 20, a guide slot 21, a motor/gearbox assembly 22, a screw-and-nut pair 30, 23, a load cell 24, a pair of return springs 25, a first pair of proximity sensors 26, a second pair of proximity sensors 27, and an axial guide 28. The tow eye 18 is connected to the tow rod 19 passing through the axial guide 28 in the transverse-movement carriage 20. The transverse-movement carriage 20, shown schematically by four bearings 29, slides along the guide slot 21. The tow rod 19 projects out of the transverse-movement carriage 20 in the direction of the tractor, and a load cell 24 is at the tractor end of this rod. The load cell 24 is provided at its ends with joints (not indicated by reference numbers). The joint furthest from the tow rod 19 is connected to the screw-and-nut 23 driven by the motor/gearbox assembly 22.
In operation, the tow rod 19, in the rest condition, is kept in the center by the opposing return springs 25, 25. When the tow eye 18 is moved right or left, the relevant one of the two proximity sensors 26 sends a signal to the motor/gearbox assembly 22 to move, through the screw- and-nut 30, 23, the tow rod 19.
In this way the transverse-movement carriage 20 moves in the direction in which the load is acting.
As should be obvious, the arrangement described above makes it possible to apply the center of rotation of the load from the eye 18 toward the front part of the tractor. Specifically, due to the movement of the transverse-movement carriage 20 along the guide slot 21 by means of the proximity sensors 26, 26 operating the motor/gearbox assembly 22, the center of rotation of the tow bar 5b is always kept on the center of curvature of the guide slot 21.
The particular forms of tow bar, in particular 5b shown in Figure 5, can be described as of variable geometry, meaning that the angular movement of the bar is a function of the direction of application of the towed load. With reference to Figure 6, this shows the control panel or console 6, which is situated inside the rotating driver's position. It makes it possible to perform all the functions of forward and reverse travel, change of direction and autorotation.
The control panel comprises a device 31 for monitoring/ controlling the force applied by the tractor, including an electronic unit for entering the data about the type of aircraft to be towed, a key-operated selector 32, indicator lamps 33, an autorotation selector 34, a control stick 35 which enables forward/reverse and the gear changes in all directions, and a revolving position selector 36, which makes it possible to rotate the position of the operator in both directions of travel.
The advantages of the invention will be appreciated.
The particular forms of tow bar, of the variable-geometry type, meaning the angular movement of the bar as a function of the direction of application of the towed load, increased the stability of the towing action by locating its point of application near the tractor's center of gravity. A variable -geometry tow bar of this kind makes for easier maneuvering especially in restricted spaces.
The presence of the load cell on the tow bar enables the applied force to be monitored and towing to be stopped before the maximum admissible limit is exceeded.
The applied force is determined on the basis of the resistance of the wheel of the airplane that is to be towed, so as to tow with the correct acceleration.
Furthermore the tracked tractor is capable of maneuvering in very restricted spaces because of the function of autorotation which is typical of tracked systems. By reversing the direction of one track with respect to that of the other, the tractor can rotate on itself even while towing. There is no sudden jerking either while pulling or when slowing down, even on slippery paving, owing to the use of strong rubber tracks.
The tractor according to the invention is easy to maneuver because the rotating driver's position makes it unnecessary to advance in reverse gear.
Although not shown in the drawings and not described above, the tractor according to the present invention can be equipped with a variety of accessories and devices that would be useful in a wide variety of operational situations. For example, it can be equipped with a camera observing the radius of action of the tow bar when hitched to the vehicle. The batteries that drive the electric motors of the unit for propulsion and rotation of the driver's cabin can be recharged by an internal-combustion electric generating set situated in the tractor itself and capable of converting and generating direct and oscillating current for use off site by automatic or manual actuation. This electric generating set can supply emergency electric power and emergency start-up power. The tractor can be equipped with an electric air compressor for general off-runway use. In addition, the tractor according to the invention can be equipped with an electric winch for general off-runway use or for the vehicle itself. The propulsion unit may also be a hybrid drive made up on an internal-combustion engine and electric motors for use as alternatives. Lastly, the tractor according to the invention could also be fitted with tired wheels instead of the tracked system.

Claims

1. A tractor, particularly for towing aircraft, including a driver's position (2) with control console (6), propulsion means (4) and a tow bar, which tractor is characterized in that the tow bar (5a; 5b) is equipped with a device (3) for monitoring/controlling the applied force, in the form of a load cell, and with means for adjusting the angular position of the tow bar (5a; 5b) in the direction of application of a towing force.
2. The tractor as claimed in claim 1, characterized in that the tow bar (5a) comprises a drawbar (7) assisted by two opposed double-acting hydraulic cylinders (8, 8), a pair of front bi-directional adjustable valves (9, 9) and a pair of rear bi-directional adjustable valves (10, 10), a two-way electrically operated valve (11), a sensor (12), a mobile post device (13) for attaching the drawbar to, a pair of return springs (14,14) for returning the mobile post, an oil reservoir (15) and a check valve (16), in such a way that, during towing, the sensor (12) is activated by the forced movement of the drawbar toward the opposing return springs (14, 14), with consequent opening of the electrically operated valve (11) and movement of oil in the two directions controlled by the front and rear bi-directional valves (9, 9 and 10, 10), to cause angular movement of the drawbar (7) in the direction of application of the towed load.
3. The tractor as claimed in claim 1, characterized in that the tow bar (5b) comprises an eye (18), a tow rod (9), a transverse-movement carriage (20), a guide slot (21), a motor/gearbox assembly (22), a screw- and-nut pair (23), a load cell (24), a pair of return springs (25), a first pair of proximity sensors (26), a second pair of proximity sensors (27), and an axial guide (28), in such a way that, when the tow rod (19), in the towing condition, is moved right or left, the relevant one of the two proximity sensors (26) sends a signal to the motor/gearbox assembly (22) to move, through the screw-and-nut (30, 23), the tow rod (19) in the direction of application of the towed load.
4. The tractor as claimed in claim 1, characterized in that the control panel comprises a device (31) for monitoring/controlling the applied force, including an electronic unit for entering the data about the type of aircraft to be towed, a key-operated selector (32), indicator lamps (33), an autorotation selector (34), a control stick (35) for forward/reverse and gear changes in all directions, and a revolving position selector (36) for positioning the operator in both directions of travel.
5. The tractor as claimed in claim 1, characterized in that it is mounted on a tracked system.
6. The tractor as claimed in claim 1, characterized in that the driver's position (2) is rotatable through 180° in both directions of travel.
7. The tractor as claimed in claim 1, characterized in that the propulsion unit (4) consists of electric motors.
8. The tractor as claimed in claim 7, characterized in that the electric motors are powered by batteries charged by an electric generating set mounted on the tractor itself.
PCT/IT2003/000569 2002-09-25 2003-09-24 Tractor, particularly for towing aircraft WO2004028903A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003274708A AU2003274708A1 (en) 2002-09-25 2003-09-24 Tractor, particularly for towing aircraft

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITRM2002A000475 2002-09-25
IT000475A ITRM20020475A1 (en) 2002-09-25 2002-09-25 TOWING TRACTOR DEVICE.

Publications (1)

Publication Number Publication Date
WO2004028903A1 true WO2004028903A1 (en) 2004-04-08

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IT (1) ITRM20020475A1 (en)
WO (1) WO2004028903A1 (en)

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WO2008038270A2 (en) 2006-09-28 2008-04-03 Israel Aerospace Industries Ltd. System and method for transferring airplanes
US7975959B2 (en) 2006-09-28 2011-07-12 Israel Aerospace Industries Ltd. System and method for transferring airplanes
WO2011154952A1 (en) 2010-06-09 2011-12-15 Israel Aerospace Industries Ltd. Vehicle for towing an airplane
WO2013042114A1 (en) 2011-09-21 2013-03-28 Israel Aerospace Industries Ltd. System and method for transferring airplanes
US8544792B2 (en) 2006-09-28 2013-10-01 Israel Aerospace Industries Ltd. Towbarless airplane tug
US8825338B2 (en) 2010-05-30 2014-09-02 Israel Aerospace Industries Ltd. Controller for a drive system
US8935049B2 (en) 2010-02-16 2015-01-13 Israel Aerospace Industries Ltd. Plane tractor
CN104386147A (en) * 2014-11-15 2015-03-04 江苏海鹏特种车辆有限公司 Air flow guide mechanical structure of middle fuselage of aircraft
US9090358B2 (en) 2006-09-28 2015-07-28 Israel Aerospace Industries Ltd. System and method for transferring airplanes
RU2558523C1 (en) * 2014-02-25 2015-08-10 Публичное акционерное Общество "Таганрогский авиационный научно-технический комплекс им. Г.М. Бериева" (ПАО "ТАНТК им. Г.М. Бериева") Aircraft tow device
US9199745B2 (en) 2007-05-16 2015-12-01 Israel Aerospace Industries Ltd. System and method for transferring airplanes
US9666889B2 (en) 2014-03-25 2017-05-30 Parker-Hannifin Corporation Aircraft ground support vehicle

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FR2161786A1 (en) * 1971-11-29 1973-07-13 Messier Hispano Sa
US4113041A (en) * 1974-06-15 1978-09-12 Mogens Birkeholm Method and tractor for towing aircraft
GB2050977A (en) * 1979-06-07 1981-01-14 Douaisis Mec Atel Tow bar
DE3302771A1 (en) * 1983-01-27 1984-08-02 Krauss-Maffei AG, 8000 München Towing vehicle for aircraft
EP0529507A1 (en) * 1991-08-22 1993-03-03 Friedrich W. Haug Aircraft ground-handling vehicle
DE9307340U1 (en) * 1993-05-14 1993-08-19 Seidl, Otto, 73760 Ostfildern Tow bar

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2161786A1 (en) * 1971-11-29 1973-07-13 Messier Hispano Sa
US4113041A (en) * 1974-06-15 1978-09-12 Mogens Birkeholm Method and tractor for towing aircraft
GB2050977A (en) * 1979-06-07 1981-01-14 Douaisis Mec Atel Tow bar
DE3302771A1 (en) * 1983-01-27 1984-08-02 Krauss-Maffei AG, 8000 München Towing vehicle for aircraft
EP0529507A1 (en) * 1991-08-22 1993-03-03 Friedrich W. Haug Aircraft ground-handling vehicle
DE9307340U1 (en) * 1993-05-14 1993-08-19 Seidl, Otto, 73760 Ostfildern Tow bar

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US7975959B2 (en) 2006-09-28 2011-07-12 Israel Aerospace Industries Ltd. System and method for transferring airplanes
US9403604B2 (en) 2006-09-28 2016-08-02 Israel Aerospace Industries Ltd. System and method for transferring airplanes
US8544792B2 (en) 2006-09-28 2013-10-01 Israel Aerospace Industries Ltd. Towbarless airplane tug
US9090358B2 (en) 2006-09-28 2015-07-28 Israel Aerospace Industries Ltd. System and method for transferring airplanes
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US9199745B2 (en) 2007-05-16 2015-12-01 Israel Aerospace Industries Ltd. System and method for transferring airplanes
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US9085374B2 (en) 2010-02-16 2015-07-21 Israel Aerospace Industries Ltd. Plane tractor
US9187185B2 (en) 2010-02-16 2015-11-17 Israel Aerospace Industries Ltd. Plane tractor
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WO2013042114A1 (en) 2011-09-21 2013-03-28 Israel Aerospace Industries Ltd. System and method for transferring airplanes
RU2558523C1 (en) * 2014-02-25 2015-08-10 Публичное акционерное Общество "Таганрогский авиационный научно-технический комплекс им. Г.М. Бериева" (ПАО "ТАНТК им. Г.М. Бериева") Aircraft tow device
US9666889B2 (en) 2014-03-25 2017-05-30 Parker-Hannifin Corporation Aircraft ground support vehicle
CN104386147A (en) * 2014-11-15 2015-03-04 江苏海鹏特种车辆有限公司 Air flow guide mechanical structure of middle fuselage of aircraft
CN104386147B (en) * 2014-11-15 2016-09-07 江苏海鹏特种车辆有限公司 Fuselage transport vehicle air conducting frame for movement in aircraft

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