Classifications

• • D—TEXTILES; PAPER
  • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
  • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
  • D21G9/00—Other accessories for paper-making machines
  • D21G9/0063—Devices for threading a web tail through a paper-making machine
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10S83/00—Cutting
  • Y10S83/909—Cutting strand extending from or lying on strand or package support
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10S83/00—Cutting
  • Y10S83/929—Particular nature of work or product
  • Y10S83/949—Continuous or wound supply
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T83/00—Cutting
  • Y10T83/04—Processes
  • Y10T83/0448—With subsequent handling [i.e., of product]
  • Y10T83/0453—By fluid application
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T83/00—Cutting
  • Y10T83/04—Processes
  • Y10T83/0581—Cutting part way through from opposite sides of work
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T83/00—Cutting
  • Y10T83/04—Processes
  • Y10T83/0605—Cut advances across work surface
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T83/00—Cutting
  • Y10T83/202—With product handling means
  • Y10T83/2066—By fluid current
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T83/00—Cutting
  • Y10T83/202—With product handling means
  • Y10T83/2074—Including means to divert one portion of product from another
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T83/00—Cutting
  • Y10T83/202—With product handling means
  • Y10T83/2092—Means to move, guide, or permit free fall or flight of product
  • Y10T83/2094—Means to move product at speed different from work speed
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T83/00—Cutting
  • Y10T83/202—With product handling means
  • Y10T83/2092—Means to move, guide, or permit free fall or flight of product
  • Y10T83/2196—Roller[s]
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T83/00—Cutting
  • Y10T83/202—With product handling means
  • Y10T83/2092—Means to move, guide, or permit free fall or flight of product
  • Y10T83/2198—Tiltable or withdrawable support
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T83/00—Cutting
  • Y10T83/566—Interrelated tool actuating means and means to actuate work immobilizer
  • Y10T83/5669—Work clamp
  • Y10T83/5733—Tool or tool support on movable clamp jaw
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T83/00—Cutting
  • Y10T83/647—With means to convey work relative to tool station
  • Y10T83/664—Roller
  • Y10T83/6649—Supporting work at cutting station
  • Y10T83/6651—Comprising part of cutting station
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T83/00—Cutting
  • Y10T83/647—With means to convey work relative to tool station
  • Y10T83/664—Roller
  • Y10T83/6654—Tool and roller on common movable support

Definitions

• Stripping and transfer device as well as methods for striking and transferring a threading strip
• the invention relates to a stripping and transfer device of a machine for producing a continuous material web, in particular paper or cardboard web, according to the preamble of claim 1, and also to a method for knocking off and transferring a threading strip within a machine for producing a continuous material web, in particular paper or Cardboard web according to the preamble of claim 17.
• the threading strip runs freely together with the rest of the material web, that is to say it is removed - for example from the first drying cylinder of a dryer section of the machine for producing a material web - into the basement of the machine and fed to a reprocessing.
• it In order to be able to pass the threading strip through the machine, it must first be knocked off, that is to say cut off. Since the material web or its threading strip runs at full machine running speed or at most only an insignificantly reduced speed at the beginning of the threading process, a jam occurs during the knocking-off process, due to which a further transfer of the threading strip is often problematic.
• the device is characterized by at least one guide roller which is brought into engagement with the freely running threading strip and leads it to the interface. It is possible to avoid a paper jam when the material web is knocked off and to ensure that the threading strip can be transferred easily.
• An exemplary embodiment of the stripping and transfer device is preferred, which is characterized in that the guide roller interacts with a clamping device which preferably comprises at least one clamping roller. This interplay of the two roles improves the guidance of the threading strip, so that a further contribution to the clean cutting and transfer of the threading strip is made.
• the stripping and transfer device which is characterized in that the rotational speed of the guide roller and / or the pinch roller is adjustable so that its peripheral speed is at least as great as the running speed of the threading strip. Since the two rollers are in engagement with each other, they basically rotate at the same speed. It is therefore sufficient to drive one of the two rollers and to select an adjustable peripheral speed of one of the two rollers. Due to the adjustable rotational speed, the tension of the threading strip can be set to a desired value, so that a defined knocking-off process and a clean transfer of the threading strip are guaranteed.
• An embodiment of the stripping and transfer device is particularly preferred, which is characterized in that the stripping device Gang knife used is relocatable. It is thus possible to choose the knife movement so that it runs in the direction of the transfer direction of the threading strip. The free front end of the threading strip produced by the knock-off process is thus deflected in the direction in which the threading strip is to be transferred.
• a method for knocking off and transferring a threading strip within a machine for producing a continuous material web is also proposed, which shows the features mentioned in claim 17. It is characterized in that the threading strip is guided to the tapping point before tapping off. Due to the defined position of the threading strip during chopping, a paper jam and problems during transfer can be avoided.
• An embodiment of the method is preferred, which is characterized in that the threading strip is subjected to a defined pretension before being knocked off. This leads to a further improvement in the behavior of the threading strip when tapping off. A jam can be safely avoided, so that problems when transferring the cut end of the strip are practically excluded.
• an embodiment of the method is preferred, which is characterized in that the threading strip is removed by means of a knife. is struck, which is moved in the same direction as the free end of the stripped strip. The free end of the threading strip that arises during the knock-off process thus receives an impulse in the direction of the later course of the threading strip.
• the process is therefore characterized by very high operational reliability.
• FIG. 1 shows a schematic diagram of a stripping and transfer device in a first functional position
• FIG. 2 shows a schematic diagram of the strip cutting and transfer device shown in FIG. 1 in a second functional position
• Figure 3 is a plan view of part of the stripping and transfer device.
• the stripping and transfer device described below and the method for striking and transferring a threading stripe can in principle be used in conjunction with any machines for producing a continuous web of material.
• this machine is a paper making machine.
• the full width of the continuous material web is first discharged into the so-called basement of the machine and later delivered to a reprocessing system.
• a relatively narrow strip is cut from the material web with the aid of a known cutting or cutting device.
• the rest of the material web and the cut strip that later forms the threading strip are dropped together into the basement.
• the stripping and transfer device is arranged where the material web or the threading stripe run from a cylinder of the papermaking machine, for example a drying cylinder.
• the stripping and transfer device When the stripping and transfer device is activated, the threading strip is knocked off and the resulting free end of the threading strip is threaded into the downstream parts of the paper making machine.
• the separating device When the strip runs safely inside the machine, the separating device is moved in such a way that the width of the threading strip becomes ever larger and this pulls an ever wider strip of the material web through the machine. Finally, the full width of the material web is passed through the machine in this way.
• a strip chopping and transfer device referred to below as device 1, can be seen, which is used in a machine 3 for producing a continuous material web 4 or paper web is integrated.
• the material web 4 runs freely downwards from a drying cylinder 5 of the machine 3 following gravity and reaches a cellar 7. From there the material web is fed to a reprocessing system. The material web 4 is removed from the surface of the drying cylinder 5 with the aid of a scraper 9, which is known in principle, so that its operation and structure are not discussed in detail here.
• the device 1 comprises a base 11 which can be displaced, for example, on a foundation beam 13, as indicated by a double arrow 15.
• a support device 17 is attached to the base 11 and cooperates with a counter bearing 19 which is also attached to the base 11.
• the counter bearing 19 is connected to the base 11 via a tube 21.
• the carrier device 17 is articulated to the counter bearing 19 via a pivot axis 23.
• a pivoting movement of the carrier device 17 relative to the counter bearing 19 is effected, for example, by means of a piston-cylinder unit 25, also referred to as a pivot cylinder, whose mode of operation and function are known in principle.
• the piston-cylinder unit 25 is attached in a suitable manner on the one hand to the tube 21 and on the other hand to the carrier device 17.
• the tube 21 is rotatable relative to the base 11. That is, the carrier device 17 and the counter bearing 19 of the device 1 are arranged to be displaceable and rotatable relative to the foundation beam 13.
• a guide roller 27 and a knife 29 are fastened to the carrier device 17.
• a guide device 31 is also provided here, which here comprises at least one air nozzle 33, optionally a plurality of air nozzles 33 distributed over the width of the threading strip.
• the knife 29 is movably mounted with respect to the carrier device 17. It interacts with a piston-cylinder device 35 which is fastened on the one hand to the knife 29 and on the other hand in a suitable manner to the carrier device 17.
• a clamping device and a guide device 39 are provided on the counter bearing 19.
• the latter comprises a guide plate 41 and at least one air nozzle 43.
• the clamping device is formed by a clamping roller 37.
• the clamping device comprises a plurality of clamping rollers.
• the clamping device it is possible for the clamping device to comprise, for example, a guide device with an optionally curved contact surface for the threading strip instead of at least one clamping roller.
• a web guide roller 45 is arranged above the counter bearing 19, onto which the threading strip, which is separated from the material web 4, is to be transferred.
• the counter bearing 19 has a side cheek 47, which is connected to the tube 21 and receives the pivot axis 23 at its one end — on the left in FIG. 1.
• the pinch roller 37 is arranged at a distance from the pivot axis 23 so that the threading strip separated in front of the material web 4 can run downward between the pivot axis 23 and the pinch roller 37.
• the guide plate 41 and the air nozzle 43 are arranged on the side of the pinch roller 37 facing away from the pivot axis 23 and are located between the latter and the web guide roller 45.
• the air nozzle 43 is designed such that it emits one or more air jets which are essentially parallel to the guide plate 41 run and are directed to the web guide roller 45.
• the carrier device 17 comprises a first support arm 49, which cooperates with the pivot axis 23, so that the carrier device 17 is pivotably articulated on the counter bearing 19.
• the guide roller 27 is rotatably mounted on the support arm 49.
• the counter bearing 19 is fixedly connected to the tube 21, while the support device 17 can be pivoted relative to the counter bearing 19 and thus relative to the tube 21.
• the carrier device 17 In the functional position shown in FIG. 1, the carrier device 17 is pivoted upward in a counterclockwise direction, so that the guide roller 27 and the pinch roller 37 are arranged at such a distance that the material web 4 separated threading strips between the two roles in the basement 7 can run off.
• FIG. 2 shows the device 1 in its second functional position: by activating the piston-cylinder unit 25, the carrier device 17 is pivoted clockwise relative to the fixed counter bearing 19, so that the guide roller 27 moves freely into the cellar 7 from the scraper 9 running threading strip of the material web 4 arrives. The threading strip is thus deflected to the right by the guide roller 27.
• the guide roller 27 If the guide roller 27 is designed to be driven, it can guide the threading strip of the material web 4, so that the threading strip is stabilized. With a further swiveling movement of the carrier device 17, the guide roller 27 finally comes into contact with the pinch roller 37. The threading strip of the material web is thus pinched between the guide roller 27 and the pinch roller 37 and is guided securely by the latter.
• the guide roller 27 is driven at a rotational speed such that the peripheral speed of the guide roller 27 corresponds at least to the running speed of the threading strip.
• the speed of rotation is preferably selected such that the U-shaped surface of the guide roller 27 quasi leads the threading strip and applies a pre-tensioning force to it.
• the knife 29 is fastened to the carrier device 17 in such a way that it can be brought into engagement with the threading strip of the material web 4 and cuts it off.
• the guide device 31 is designed such that its at least one air nozzle 33 acts on the threading strip of the material web 4 with an air flow which acts in FIG. 2- on the left side of the threading strip and applies a force acting in the direction of the web guide roller 45.
• FIG. 3 shows part of the device 1 in plan view, specifically in the first functional position shown in FIG. 1.
• the side cheek 47 of the counter bearing 19 is clearly recognizable, on the right end of which the clamping roller 37 is overhung.
• the support arm 49 of the carrier device 17 is also visible.
• the top view also shows that the support arm 49 is assigned a further support arm 51 opposite.
• the guide roller 27 is rotatably supported between the support arms 49 and 51.
• the drive for the guide roller 27 has not been shown here.
• the knife 29 is mounted such that it can be moved relative to the support arms 49 and 51.
• the movement of the knife 29 is effected by the piston-cylinder unit 35, which here comprises two individual elements, each of which has a piston and a cylinder and is coupled to the knife 29.
• FIG. 3 shows the lateral edge area of the material web 4, from which the threading strip 53 is separated by means of a cutting device, not shown here.
• a separating device having a nose 55 is provided on the support arm 51, which ensures that the threading strip 53 is guided between the nose 55 and the side cheek 47, while the remaining part of the material web runs outside the device 1. There is therefore a distance between threading strips 53 and the remaining material web 4.
• Figure 3 is greatly simplified in that the illustration of a possible drive of the pinch roller 37 and the reproduction of the guide device 39 has been omitted. Finally, the guide device 31 is also not shown here in order to allow a clear view of the knife 29.
• the full width of the material web 4 is diverted into the basement 7 of the machine 3, for example from the drying cylinder 5.
• the device 1 is in its first functional position, which is shown in FIG. That is, the guide roller 27 and the pinch roller 37 are located at such a distance from one another that the threading strip 53 can run freely from the scraper 9 into the cellar 7.
• the threading strip 53 does not touch either the guide roller 27 or the pinch roller 37.
• the support device 17 is now pivoted clockwise with the aid of the piston-cylinder unit 25.
• the nose 55 comes into engagement with the material web 4, so that it is ensured that the threading strip 53 runs at a distance from the rest of the material web 4.
• the guide roller 27 comes into contact with the threading strip that is running out.
• the guide roller 27 is preferably driven and rotates at a speed which corresponds to the running speed of the threading strip 53, preferably greater than this. As a result, the threading strip 53 is guided.
• the threading strip 53 is finally directed against the pinch roller 37 and clamped between the guide roller 27 and the pinch roller 37. These rotate at such a speed that the threading strip 53 is guided securely and is preferably subjected to a pretension.
• the base 11 can be moved, it is possible to ensure that in the first functional position of the device 1, which is shown in FIG. 1, the threading strip 53 runs freely between the guide and clamping rollers 27, 37.
• the knife 29 can be activated by the piston-cylinder unit 35 and, as shown in FIG. 3-, to the right be relocated.
• the toothed knife 29 separates the threading strip without causing a jam.
• the knock-off movement of the knife 29 takes place from left to right, so that the threading strip 53 is acted upon by a pulse directed to the right.
• the guide device 31 which has at least one air nozzle 33
• a force directed to the right is additionally exerted on the free end of the threading strip 53 produced by the knock-off process, so that the free end reaches the guide device 39.
• the free end of the threading strip 53 is guided on the guide plate 41 to the web guide roller 45 and is additionally acted upon by a guide force which is generated by the air nozzle (s) 43.
• the device 1 described here and the method are not only characterized by a high level of functional reliability but also by a large load. drive safety. This is also ensured in that the knife 29 is protected between the support arms 49 and 51, and that the knife is displaceable and can be brought into a retracted position as soon as the tee-off process is complete. This reduces the risk of injury to a minimum.
• the device 1 is otherwise simply constructed and can be brought into an optimal operating position due to the movable base 11 and due to the possibility of rotating the tube 21. For example, it is possible to twist the device 1 somewhat, ie not to align it exactly parallel to the running direction of the material web 4.
• the resulting threading strip 53 can thus be fed to a cable shears, not shown here, provided directly next to the material web 4.
• This is basically known and is used to pull the threading strip 53 through the machine for producing the material web.
• the device 1 can also be used in a machine for producing the material web, in which a rope-free system is provided in order to pull the threading strip through the machine or to guide it through, for example an air supply system. This is known per se, so that a detailed description is dispensed with.
• FIG. 3 The pivoting movement of the device 1 in a clockwise direction, which in this exemplary embodiment shown in FIGS. 1 to 3 serves to Introducing thread strips 53 into a rope shear is indicated in FIG. 3 by an arrow 57.
• the device 1 can be moved, after the threading-in of the threading strip 53, the device 1 can be moved in such a way that it does not impede the web of material 4 running off the drying cylinder 5 in the event of a web break.
• the device 1 can also be modified insofar as the support device 17 is stationary and the counter bearing 19 can be designed to be pivotable. It is essential that, in a first functional position, the threading strips run freely between a guide roller and a clamping roller, and that in a second functional position it can be guided securely and pretensioned. For the generation of the preload, it is also irrelevant whether the guide or the pinch roller is driven.

Landscapes

• Replacement Of Web Rolls (AREA)
• Manufacture Of Motors, Generators (AREA)
• Paper (AREA)

Applications Claiming Priority (3)

Publications (2)

Family

ID=7825190

Family Applications (1)

Country Status (5)

Cited By (1)

Families Citing this family (6)

Family Cites Families (21)

• 1997
  • 1997-04-01 DE DE19713540A patent/DE19713540A1/de not_active Withdrawn
• 1998
  • 1998-04-01 US US09/381,965 patent/US6474205B1/en not_active Expired - Fee Related
  • 1998-04-01 AT AT98921410T patent/ATE244143T1/de not_active IP Right Cessation
  • 1998-04-01 WO PCT/EP1998/001878 patent/WO1998043815A1/fr active IP Right Grant
  • 1998-04-01 EP EP98921410A patent/EP0986477B1/fr not_active Expired - Lifetime
  • 1998-04-01 DE DE59808916T patent/DE59808916D1/de not_active Expired - Fee Related

Non-Patent Citations (1)

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