Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
  • B60J5/00—Doors
  • B60J5/04—Doors arranged at the vehicle sides
  • B60J5/042—Reinforcement elements
  • B60J5/0456—Behaviour during impact
  • B60J5/0459—Active coupling of the reinforcement elements to the door or to the vehicle body, e.g. through releasing of pressurized gas
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
  • B60J5/00—Doors
  • B60J5/04—Doors arranged at the vehicle sides
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
  • B60J5/00—Doors
  • B60J5/04—Doors arranged at the vehicle sides
  • B60J5/042—Reinforcement elements
  • B60J5/0422—Elongated type elements, e.g. beams, cables, belts or wires
  • B60J5/0423—Elongated type elements, e.g. beams, cables, belts or wires characterised by position in the lower door structure
  • B60J5/043—Elongated type elements, e.g. beams, cables, belts or wires characterised by position in the lower door structure the elements being arranged vertically

Definitions

• This invention relates to the technical field of designing and manufacturing of car frames and it is about a method and a system to increase their rigidity. This method makes use of the car's doors as part of the frame structure; while at the same time maintain their main function.
• This system improves the car's frame rigidity to a great extent, reduces weight, increases passenger's safety and eliminates the possibility of the doors get unlocked during an accident and it can also replace the current door locking mechanisms.
• the car's frame is the skeleton on which the car vehicle is build up, it's rigidity is the base on which all parameters of energetic and passive safety is based upon. For this reason the improvement of frame's rigidity in conjunction with weight saving, are the first tasks of all car manufacturers.
• the monocoque type car frames base their rigidity either exclusively or partially on the floor pans.
• the open type cars (without permanent roof top) base their rigidity exclusively on the floor pan, while in the closed type cars (with permanent roof top) the rigidity of floor pan is reinforced by the contribution of the roofs strength through the side pillars.
• the weight of the cars is dramatically increased, through the strengthening of the floor pans to obtain an acceptable level of rigidity.
• the strengthening, by several methods and ways, of the existing elements of car frames like the floor pan for the open types and the roof with the side pillars for the closed ones, is the only way the designers and the car manufacturers up to now have to improve rigidity.
• the scope of this invention is the improvement of car's frame rigidity with the introduction of new elements in the frame structure and these new elements are the car's doors.
• the doors are simply suspended on the main frame and they are not used as integral parts of the frame, because either this idea never occurred or if it occurred, the method end the system of incorporating the doors to be parts of the car's frame were not invented, which would have allowed the use of the doors to be part of the frame and at the same time perform their main function.
• the hollow beams systems (13, 14 & 15) are:
• System of five hollow beams (13) (FIG. 1, 2, 7 & 8), which is made up from one or more subsystems of five hollow beams (16).
• System of three hollow beams (14) (FIG. 3, 4, 9 & 10), which is made up from two or more subsystems of three hollow beams (17).
• a combined system of hollow beams (15) (FIG. 5, 6, 11 & 12), made up from at least one subsystem of five hollow beams (16) and at least of one subsystem of three hollow beams (17).
• Each subsystem of five hollow beams (16), is made up from three fixed hollow beams (4 & 5), which are attached or firmly fixed, the one (4) in the doors frame (1) as an integral part, while the other two (5) are structural members of the vertical elements (2) of the car's frame, from two movable hollow beams (7), which are installed inside the door's (1) fixed hollow beam (4), two moving mechanism (8) and four securing mechanisms (9) of the movable hollow beams (7).
• Each subsystem of three hollow beams (17), is made up from two fixed beams (4 & 5 or 4 & 6), which are attached or fitted and are, the one (4) structural member of the door's frame (1) and the other (5 or 6) structural member of the vertical (2) or the horizontal (3) elements of the car's frame respectively, from one movable hollow beam (7), which is positioned inside the door's (1) fixed hollow beam (4), from one moving mechanism (8) and two securing mechanisms (9) for the movable hollow beam (7).
• the three fixed hollow beams (4 & 5) of each of the five hollow beams subsystem (16) and the two fixed hollow beams (4 & 5 or 4 & 6) of each subsystem of three hollow beams (17), are of the same shape of equal inner cross sectional area, and equal thickness and are installed in, such a way as to be in alignment with each other in the three dimensions in space, the movable hollow beams (7) have the shape of the fixed hollow beams (4, 5 & 6) of subsystem (16 & 7).
• the fixed hollow beam (4) of the door's frame (1) has two locking holes (11), the fixed hollow beams (5) of the vertical elements (2) of the car's frame have one locking hole (12) and the movable hollow beams (7) have two locking holes (B & K).
• the fixed hollow beams (4) of the door's frame (1) and the fixed hollow beams (5 & 6) of the vertical (2) and the horizontal (3) elements of the car's frame have one locking hole (11 & 12) respectively and the movable hollow beams (7) have two locking holes (B & K).
• the moving mechanisms (8) are taken from the existing technical level, and move the hollow beams (7) from the "off 1 position to the "on” position and vice versa and also the securing mechanisms (9), taken from the existing technical level, secured (lock) the movable hollow beams (7) to the "on” and “off' positions using locking pins (10) through the locking holes (11 , 12, B & K).
• the car's computer is used as control unit and is programmed in accordance with the operational method of the systems and the needs to keep the ability of the doors to operate under normal conditions but also in under extreme conditions like that of an accident, and it controls the moving mechanisms (8) and also the securing mechanisms (9).
• the above described systems of hollow beams (13, 14 & 15), make the doors structural elements of the car's frame, keeping at the same time their main function by the following described way.
• the movable hollow beams (7) of the subsystems (16 & 17) are used as a mean to bridge the door's (1) fixed hollow beams (4) with the fixed hollow beams (5 & 6) of the vertical (2) and horizontal (3) elements of the car's frame.
• the movable hollow beams (7) are moved by the moving mechanisms (8) and are secured (locked) by the securing mechanisms (9), in order to:
• this invention makes the car's doors (1) structural elements of the frame, preventing their opening, because at the same time the system functions as a door's securing system (1) and locks the car's doors rendering the classic locks obsolete.
• the moving hollow beams (7) of the subsystems (16 & 17) are inside the fixed hollow beams (4) of the doors (1), secured in this position by the locking pins (10) of the securing mechanisms (9), inside the locking holes (11) of the fixed hollow beams (4) of the door (1), and inside the locking holes (B) of the movable hollow beams (7).
• the system is inactive, the movable hollow beams (7) do not bridge one or more of the fixed hollow beams (4) of the door (1) with the fixed hollow beams (5 & 6) of the vertical (2) and horizontal (3) elements of the frame, the doors (1) do not function as an integral part of the frame and they are can be opened.
• Each designer-constructor can choose any combination of the hollow beams systems (13, 14 & 15) or subsystems of the hollow beams (16 & 17), for implementation to all type of cars, either sedans or convertibles.
• the fixed hollow beams (4, 5 & 6) of both subsystems of hollow beams (16 & 17) could be not of special manufacture and are mounted or riveted on the door's frame (1) and to the respective vertical (2) and horizontal (3) elements of the car's frame but by construction to be part of the door (1) and to the above (2 & 3) elements of the frame after they have been previously formed to a hollow beam. 3.
• more securing mechanisms can be used (9) out of the least required for each subsystem (16 & 17), by increasing the relevant locking holes (11, 12, B & K) thus keeping the analogies of the application of the above invention.
• the securing mechanisms (9) can be installed either on the fixed hollow beams (4, 5 & 6) or inside the movable hollow beams (7).
• the movable hollow beams (7) can have a conical tip and can be inserted inside the fixed hollow beams of the car's frame (5 & 6), which can have a slightly larger opening to facilitate it's insertion and are near the door's (4) fixed hollow beam, also the locking pins (10) of the securing mechanisms (9) can have conical tips.
• the walls of all the hollow beams (4, 5, 6 & 7) could be of not equal thickness but can vary at certain chosen points or sections, or their walls can have openings either for rigidity reasons or for controlled deformation.
• the movable hollow beams (7) can have internal strengthening taken from the existing technical level or could not be hollow but solid.
• the securing mechanisms (9) can use for locking pins (10), any mean and method from the existing technical level.
• an implementation of this invention can be chosen, using a system of three hollow beams (14), comprising from a subsystem of three hollow beams (17) for each door (1), which is installed at the rear of the door.
• a system of three hollow beams (14) comprising from a subsystem of three hollow beams (17) for each door (1), which is installed at the rear of the door.
• the bridging of the door (1) with the vertical elements (2) of the car's frame which are in front of the door is made by the door's hinges (1) strengthened with means or method taken from the existing technical level.
• a moving mechanism (8) can be used, common to the subsystems of the hollow beams (16 & 17) for each door or common for each system of hollow beams (13, 14 & 15) of the car at it's total. 10.
• an implementation can be used which uses one or more subsystems of three hollow beams (17), so as to bridge the upper part of the door's frame (1), with the upper horizontal element (6) of the car's frame, in other words the car's top (roof).
• the control unit of the whole system can be autonomous comprising from en electronic circuit board and a switch enabling the driver to send orders.
• the switch is of two positions type (on-off) and the electronic circuit board is programmed in accordance with the principles and method of the operation of this invention.
• the above invention apart from cars, it can be used to improve the rigidity, be used as a locking device of any truck, or machine or boat or any make, on which doors are used and rigidity is a prerequisite.
• This invention applied to open roof cars converts the structure and form of the frame, changing it from open and discontinued, and of "U" shape (looking from the side), to closed and continue, having joined rigidly the unconnected(with the existing technical level), vertical elements of the frame around the doors, it strengthens particular strategic points of the car's frame with obvious gains in improvement of the rigidity and reduction of weight, because there is no need for stronger floor pans.
• Another big advantage of this invention is the strengthening of the passenger's cabin resulting in improvement of passive safety of the passengers.
• FIG. 1 shows a system of five hollow beams (13), comprising from a subsystem of five hollow beams (16), in the "off' position, the FIG. 2 shows the same system (13) in the "on” position, the FIG. 7 shows this application of the above system (13), in a door (1) and to the vertical elements (2) of the frame in a state in the "off position and the FIG. 8 shows the same application of the system (13) in the "on” position.
• the FIG. 3 shows a system of three hollow beams (14) comprised of three subsystems of three hollow beams (17), in the "off” position, the FIG. 4 shows the same system (14) in the "on” position, the FIG. 9 shows the application of the above system (14) in a door (1)' and around it the vertical (2) and horizontal (3) elements of the frame in the "off' position and the FIG. 10 shows the same application of the system (14) in the "on” position
• the FIG. 5 shows a combined system of hollow beams (15), comprised of a subsystem of five hollow beams (16) and one subsystem of three hollow beams (17), in the "off' position, the FIG. 6 shows the same system (15) in the "on” position, the FIG. 11 shows the application of the above system (15) to a door (1) and around of it the vertical (2) and horizontal (3) elements of the frame in the "off position and the FIG. 12 shows the same application of the system (15) in the "on” position.
• the locking holes (11) are not visible like the ones of the fixed hollow beams (4) or the ones of the door (1) and the locking holes (B) or the movable hollow beams (7), because the locking pins (10) are visible in their place which have them locked at this position and in the "on" position no locking holes are visible (11 , 12, B & K), instead the locking pins (10) are visible, having locked the movable hollow beams in this position.
• FIG. 1 , 2, 7 & 8 an implementation of this invention is presented with a system of five hollow beams (13), and for each door, a subsystem of five hollow beams (16) is needed and described as follows.
• Door's frame (1) The door's frame (1) is designed in such a way as to be ready to accept the fixed hollow beam (4) of subsystem (16) and is strengthened, with any way and method taken from the existing technical level, to improve rigidity.
• the three fixed hollow beams (4 & 5) of the five hollow beams (16) subsystem are square in cross section with constant the inside diameter and apart from the length, equal in dimension. They are installed in place, as it is defined below, in such a way as to be in line to one another in all three dimensions in space.
• the one of the fixed hollow beam (4) is positioned inside the door frame (1) secured with any convenient way allowed by the present technical level in such a way as to be an integral part of it.
• the length (4) is exactly that of the door's frame (1) length, so that the two ends are flush with the ends of the door's frame (1 ).
• the other two fixed hollow beams (5) are riveted or installed rigidly with any convenient way allowed by the present technical level, in special housings conveniently shaped at the proper points of the relevant vertical elements (2) of the door's frame (1), which surround in the front and in the rear the same door, in such a way as to comprise an integral part of the car's frame.
• the fixed hollow beams (5) of the vertical elements (2) of the frame are flush with the car's frame to eliminate any gap among them (5) and the fixed hollow beam (4) of the door's (1) frame, which could introduce fatigue to them and reduction of the required rigidity.
• the length of the fixed hollow beams (5) of the vertical elements (2) of the frame is not standard, but it depends on of the available space for their installation and the required demands for rigidity of each car manufacturer.
• the door's (1) fixed hollow beam (4) is open at both ends, while the fixed hollow beams (5) of the vertical elements (2) of the frame are open only at the end that faces the door (1).
• the two movable hollow beams (7) of subsystem (16) are of the same construction and type with the three fixed hollow beams (4 & 5) and are installed inside the door's (1) fixed hollow beam (4), in such a position so that their ends are flush with the doors hollow beam ends.
• the dimensions of the external cross sectional area of the movable hollow beams (7) should be as close as possible with the dimensions of the internal cross section of the fixed hollow beams (4 & 5) of subsystem (16), so that the clearance between, the fixed and movable hollow beams to be very small and actually touching each other in order to facilitate movement without a lot of friction and avoid big clearances between them, which could produce a lot of movement and decrease rigidity at first place and second it could become a source of unwanted noise, introduced from the subjection of heavy loads and great flexing of the car's frame.
• the length of the movable hollow beams (7) is not standard but it should be as long as it is required by the individual car manufacturer so that during operation to be able to bridge as rigidly as possible the fixed hollow beams (5) of the vertical elements (2) of the frame, with relevant fixed hollow beam (4) of the door's (1) frame.
• C3 Common characteristics and operation of the fixed (4 & 5) and movable hollow beams (7)
• the material and their wall thickness of the fixed hollow beams (4 & 5) and the movable hollow beams (7) could be any that will satisfy the needs of each car constructor, depending on the hardness and rigidity characteristics the system of five hollow beams (13) could have and at the end to the car frame.
• the internal surfaces of the three fixed hollow beams (4 & 5) and the outside surfaces of the two movable hollow beams (7), could have been subjected to any treatment from the present technical level and could have been pre-lubricated accordingly in order to have small coefficient of friction, to eliminate resistance during the movement of the movable hollow beams (7).
• openings could be made for the purpose of installation and operation of the auxiliary mechanisms, the cable routing etc, or to obtain controlled deformation of the subsystem (16), during their design depending of the manufacturer.
• the two movable hollow beams (7) are able to move inside the fixed hollow beams (4 & 5) of the subsystem (16) and can have only two certain positions.
• the securing mechanisms (9) of the movable hollow beams (7) are four and are of the electromagnetic type, powered from the cars electric power supply using electrical cables and are positioned over the locking holes (11 & 12) of the fixed hollow beams (4 & 5), the method of their installation comes from the existing technical level.
• Two of the securing mechanisms (9) are installed in the fixed hollow beam (4) of the car's doors (1) and one each mechanism (9) in the fixed hollow beam (5) of the vertical elements (2) of the car's frame.
• the securing mechanisms (9), use locking pins (10) of circular cross section, as locking pins of equal diameter with that of the locking holes (11 , 12 , B & K), which are on the fixed hollow beams (4 & 5) and the movable hollow beams (7) when positioned inside the locking holes (11, 12, B & K), secure the movable hollow beams (7) at the two positions ("on" and "off') which can have.
• the car's computer As a control unit of the hollow beams systems (13), the car's computer is used, and is programmed in accordance with the method of the operation of the system to cover the needs of operation of the doors in normal conditions and in case of an accident, and to provide the suitable orders to the moving mechanisms (8) and securing mechanisms (9).
• control unit For its operation the control unit, is connected with cables to carry over the signals and receive data back with: a) The moving mechanisms (8) of the movable hollow beams (7), b) The securing mechanisms (9) of the movable hollow beams (7) and c) with sensors, which are installed to each door (1), in order to detect if the doors
• the movable hollow beams (7), of the subsystems of the hollow beams (16), having moved from their previous position by the moving mechanisms (8), are half inside the door's fixed hollow beam (4) of the door (1) and half inside the fixed hollow beams (5) of the frame's vertical elements (2), secured in this position by the locking pins (10) of the securing mechanisms (9) at the specified locking holes (12 & B) and (11 & K) of the fixed hollow beams (4, 5, & 6) and the movable hollow beams (7).
• the system of the five hollow beams (13) is "operational", the two movable hollow beams (7) bridge the three fixed hollow beams (4 & 5) and the five hollow beams (4, 5 & 7), secured (locked) between them, function as one beam which connects the vertical elements (2) of the frame to each other and turns each door (1) of the car, as a structural element of the frame, improving their rigidity.
• the above described system of five hollow beams (13) operates as follows: When the door handle (inner or outer) is pulled out to open the door (1), the relevant sensor sends a signal to the control unit (the car's computer), which in turn sends a signal to the securing mechanisms (9), of the system of the five hollow beams (13) of the certain door (1) to unlock the movable hollow beams (7), from the "on" position, then the control unit sends a second signal to the moving mechanisms (8) to move to the "off" position inside the fixed hollow beam (4) of the door (1), and last, orders the securing mechanisms (9) to secure the movable hollow beams (7) at this position.
• the control unit the car's computer
• the fixed hollow beams (4 & 5) are not bridged, the system is non operational (FIG. 1 & 7) and the doors (1) can open or stay open.
• the sensor of the door will send a signal, that the door (1) is at the closing position, to the car's control unit which orders the securing mechanisms (9) of the five system hollow beams (13), of the specified door (1) to unlock the movable beams (7), from the "off' position, next sends a signal to the moving mechanisms (8) to move them to the "on" position inside the fixed hollow beams (5) of the frame's vertical pillars (2) and last orders the securing mechanisms (9) to lock securely the movable hollow beams (7), at this position.
• the car's control unit receives from the air bags sensor the relevant signal, sends a signal to de energize the system of five hollow beams (13) (as above) with a time delay device set by any individual car manufacturer, in relation to the collision time, in order the doors (1) to open without any problem.
• control unit may prohibit the de-activation of the five hollow beams system (13), keeping the doors (1) closed, even though somebody tries to open the door from outside or from inside, using the door handles.
• FIG. 3, 4, 9 & 10 an implementation of this invention is shown with a system of three hollow beams (14), which, for each door comprises from three subsystems of three hollow beams (17) like bellow.
• A) Door's Frame (1) The doors frame (1) is designed in such a way as to be ready to accept the fixed hollow beams (4), of the three hollow beams subsystem (17), inside the frame and is strengthened with any way and method derived from the existing technical level, so it could be a robust and rigid element of the cars frame.
• the vertical (2) and the horizontal (3) elements of the car's frame are designed in such a way, derived from the existing technical level, in order to readily accept inside them the fixed hollow beams (5 & 6) and are strengthened in accordance with the existing technical level for the improvement of their rigidity.
• the one fixed hollow beam (4) is positioned inside the door's frame (1), and installed by any convenient way in accordance with the existing technical level to the doors frame (1). It's length (4), is at least, exactly what is needed by design to be able to accept inside, the movable hollow beam (7), and it's one end is flush with the door's frame
• the second fixed hollow beam (5 or 6) of each subsystem (17), is fixed permanently by any convenient way and method derived from the existing technical method, in a housing properly formed for this purpose, either to the corresponded vertical element (2), or the corresponded horizontal element (3) of the car frame so as to be structural element of the cars frame.
• the fixed hollow beam (5 or 6) comes flush with the car frame in order to minimize any gaps (5 & 6) with the respective door's (1) fixed hollow beam (4) which will introduce fatigue to the tubes and reduction to their expected rigidity.
• the fixed hollow beams (4, 5 & 6), of each subsystem of three hollow beams (17) are compulsory open only at the end at which the one faces the other.
• the movable hollow beam (7) of each subsystem of three hollow beams (17) is of the same shape with the fixed beams (4 & 5 or 4 & 6) and are installed inside the fixed hollow beams (4), of the door's (1) in such away so that the one end to be flat with the face of the fixed hollow beams (5 or 6) of the vertical (2) or horizontal (3) elements of the frame.
• the outer dimensions of the movable hollow beam (7) should be as close as possible with the inner dimensions of the fixed hollow beams (4 & 5 or 4 & 6), so that the clearance between the fixed hollow beams (4, 5 & 6), and the movable hollow beam (7), should be as small as possible almost touching each other as required to facilitate the movement and have little friction and no too large clearance which would create movement thus decreasing the rigidity and been a source of unwanted noise due to deflection and fatigue of the frame.
• the length of the movable hollow beam (7) is not specified but it should be at least as long as required by each manufacturer, so when the system is in the "on" position to be able to bridge the fixed hollow beams (4 & 5 or 4 & 6) as rigidly as possible of the subsystem of three hollow beams (17).
• the movable hollow beam (7) of each subsystem (17) has the ability to move inside the fixed hollow beams (4 ,5 & 6) and can have two specific positions.
• This moving mechanism (8) is fitted inside the door's (1) fixed hollow beam (4), in a way and method derived from the existing technical level and is powered from the cars electrical system.
• two securing mechanisms (9) are used of the electromagnetic type and are powered from the car's electrical power system using electrical cables and are positioned in the locking holes of the of the fixed hollow beams (4, 5 & 6), installed in to them with method and way derived from the existing technical level.
• locking pins (10) of round sectional area, ready to be fitted inside the locking holes (11 , 12, B & K) which are in the hollow beams (4, 5, 6 & 7) which when they are moved in and out of the respective locking holes, they lock and unlock the movable hollow beams (7) at the two positions it can have.
• the movable hollow beam (7), of each subsystem of three hollow beams (17), in accordance with the invention, can have only two positions, which correspond to the "on" (locked) position and “off' (unlocked) position respectively.
• the movable hollow beams (7) of the three hollow beams subsystem (17) are entirely inside the door's (1) fixed hollow beams (4), secured in this position by the locking pins (10) of the securing mechanisms (9), inside the locking holes (11) of the door's (1) fixed hollow beams (4) and the locking holes (B) of the movable hollow beams (7).
• the movable hollow beam (7), of each subsystem of three hollow beams (17), having been moved from their previous position by the moving mechanism (8), is found partially inside the fixed hollow beam (4) of the door (1) and partially inside the fixed hollow beam (5) of the vertical (2) or inside the fixed hollow beam (6) of the horizontal (3) elements of the frame, secured at this position, by the locking pins (10) of the securing mechanisms (9), inside the locking holes (12 & B) and (11 & K) of the fixed hollow beams (4, 5 & 6) and the movable hollow beam
• the system of three hollow beams (14) is operational, the movable hollow beams (7) bridges the fixed hollow beams (4) of the door (1) with the fixed hollow beams (5 & 6) of the vertical (2) or the horizontal (3) elements of the frame and the three hollow beams ( 4, 5 & 7 or 4, 6 & 7) of each subsystem of three hollow beams (17), secured (locked) between them, operate as one which bridges the door (1) with the vertical (2) and the horizontal (3) elements of the frame, intergrading each door (1) of the car as structural element of the frame , thus improving it's rigidity.
• FIG. 5 & 11 show the combined system of hollow beams (15) in the "off” position and the FIG. 6 & 12 shows it at the "on" position.

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• 2008
  • 2008-03-17 GR GR20080100172A patent/GR20080100172A/el not_active IP Right Cessation
• 2009
  • 2009-03-16 WO PCT/GR2009/000016 patent/WO2009115849A1/en active Application Filing

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