EP0953390A2 - Outil de rivetage - Google Patents

Outil de rivetage Download PDF

Info

Publication number
EP0953390A2
EP0953390A2 EP99102537A EP99102537A EP0953390A2 EP 0953390 A2 EP0953390 A2 EP 0953390A2 EP 99102537 A EP99102537 A EP 99102537A EP 99102537 A EP99102537 A EP 99102537A EP 0953390 A2 EP0953390 A2 EP 0953390A2
Authority
EP
European Patent Office
Prior art keywords
rivet setting
flywheel
rivet
motor
setting device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP99102537A
Other languages
German (de)
English (en)
Other versions
EP0953390A3 (fr
Inventor
Michael H. Honsel
Dallas B. Perkins
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MH Honsel Beteiligungs GmbH
Sartam Industries Inc
Sartam Ind Inc
Original Assignee
MH Honsel Beteiligungs GmbH
Sartam Industries Inc
Sartam Ind Inc
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 MH Honsel Beteiligungs GmbH, Sartam Industries Inc, Sartam Ind Inc filed Critical MH Honsel Beteiligungs GmbH
Publication of EP0953390A2 publication Critical patent/EP0953390A2/fr
Publication of EP0953390A3 publication Critical patent/EP0953390A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/10—Riveting machines
    • B21J15/16—Drives for riveting machines; Transmission means therefor
    • B21J15/26—Drives for riveting machines; Transmission means therefor operated by rotary drive, e.g. by electric motor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/02—Riveting procedures
    • B21J15/04—Riveting hollow rivets mechanically
    • B21J15/043—Riveting hollow rivets mechanically by pulling a mandrel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/02—Riveting procedures
    • B21J15/04—Riveting hollow rivets mechanically
    • B21J15/048—Setting self-drilling hollow rivets
    • 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
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53709—Overedge assembling means
    • Y10T29/53717—Annular work
    • Y10T29/53726—Annular work with second workpiece inside annular work one workpiece moved to shape the other
    • Y10T29/5373—Annular work with second workpiece inside annular work one workpiece moved to shape the other comprising driver for snap-off-mandrel fastener; e.g., Pop [TM] riveter
    • Y10T29/53752—Annular work with second workpiece inside annular work one workpiece moved to shape the other comprising driver for snap-off-mandrel fastener; e.g., Pop [TM] riveter having rotary drive mechanism

Definitions

  • the invention relates to a rivet setting tool with an electrically operated Drive motor, which has a motor shaft, with a rivet setting device and with a gear between the drive motor and rivet setting device, the Rotational movement of the drive shaft for driving the rivet setting device in Linear motion translated.
  • Such a rivet setting tool is e.g. known from EP-A-0 527 414.
  • Rivet setting tools in which the gear is usually by a ball screw large rivet setting forces can be realized.
  • To one To be able to carry out riveting is a blind rivet in a known manner inserted into a mouthpiece of the rivet setting device.
  • the rivet pin is known in the setting device by the ball screw drive Drawn in the longitudinal direction in the rivet sleeve and then tears from.
  • the ball screw drive of the rivet setting device With the ball screw drive of the rivet setting device, the required Generate movement in the longitudinal direction of the rivet pin. After setting the The direction of rotation of the motor is changed to the setting device to bring the ball screw drive back to its starting position.
  • the high energy consumption proves to be disadvantageous for rivet setting tools. Since such rivet setting tools usually have a rechargeable battery low energy consumption is of particular importance, to thereby extend the possible insertion time of the rivet setting tool.
  • the object of the invention is therefore the energy consumption of a rivet setting tool of the type mentioned at the beginning.
  • the object is achieved in that at least one Flywheel is provided, which is releasable via a clutch with the motor shaft or a transmission shaft of the transmission is connectable.
  • Rivet setting tools to carry the energy stored in the flywheel of the rivet setting process can be used. This allows the Significantly reduce energy consumption.
  • the flywheel can be used for this to accelerate the motor start after each rivet setting process or also about the force peaks during the rivet setting process and thereby to reduce the resulting voltage peaks for the motor. This is particularly so an advantage when using the rivet setting tool continuously.
  • the flywheel turns between the individual rivet setting processes and is from the motor shaft decoupled. At the beginning of the rivet setting process, the flywheel and the motor shaft connected to each other via a coupling. That way use the energy of the flywheel.
  • a flywheel for a rivet setting tool with a ball screw drive Since to return the rivet setting device after Rivet setting process of the motor in reverse to the rivet setting process Direction must be operated during this period the flywheel from Motor decoupled. The flywheel thus maintains its direction of rotation.
  • the flywheel can also be connected to a transmission shaft of the transmission be coupled in an analogous manner.
  • Rivet setting tools, the z. B. a ball screw have a constant gear ratio between the motor shaft and rivet setting device. In principle, however, it is also conceivable for the invention to use in such rivet setting tools in which the gearbox through a crank mechanism is formed.
  • the flywheel can and motor shaft, a transmission with a transmission ratio can be provided such that the speed of the flywheel is greater than the speed of the motor shaft is. This allows smaller flywheels with the same momentum Arrange in the rivet setting tool. This also allows the undesirable Torque around the flywheel axis when the flywheel starts up to reduce.
  • the transmission ratio is selected in this way is that the speed of the flywheel is about twice the speed the motor shaft is.
  • the clutch can be a non-positive Clutch, preferably friction clutch, be formed.
  • the clutch can be actuated electromagnetically is. Such a coupling can be easily implemented.
  • the coupling can also be used as a positive coupling, preferably Claw clutch, be formed. This makes it particularly robust Realize coupling.
  • a brake can be provided with which the flywheel can be braked. This can cause an undesirable Avoid long running of the flywheel. That brake can e.g. by a switch located in the housing of the rivet setting tool be operated by the operator.
  • the flywheel can Charging a rechargeable battery of the rivet setting tool with the motor can be coupled to operate the motor as a generator. This allows Reduce the power consumption of the rivet setting tool.
  • the invention is a method for operating a Claimed rivet setting device, in which during the setting stroke of the rivet setting device the flywheel is coupled to the motor shaft and during the return stroke the rivet setting device is decoupled from the motor. This allows the Significant energy consumption for setting the rivet, especially during continuous operation belittle.
  • the flywheel is coupled to the motor shaft of the drive motor to operate the drive motor as a generator. This allows the through power generated by the generator e.g. fed to a rechargeable battery to allow you to work longer with the rechargeable battery.
  • Fig. 1 shows a first embodiment of the rivet setting device according to the invention 1 in a sectional view.
  • the rivet setting tool 1 has a housing 2 in which a drive motor 3, a gear 4 and a rivet setting device 5 are arranged are.
  • the rivet setting device 5 opens through an opening 6 of the housing 2 to the outside.
  • a power supply unit 7 in can also be removed from the housing known way attached.
  • the power supply unit 7 is below one Housing part attached, which is designed as a handle 8.
  • the power supply unit 7 has rechargeable batteries, not shown, which have electrical contacts and lines, not shown, the drive motor 3 with Supply electricity.
  • a switch 9 is provided between the drive motor 3 and the power supply unit 7, via an actuating device 10 designed as a pushbutton switch can be actuated.
  • the actuating device 10 is slidably displaceable in the handle 8 of the housing 2 added. By pushing in the actuator 10 in the housing 2 with a finger of an operator's hand the switch 9 are operated such that the drive motor 3 with the power supply unit 7 is connected to put the drive motor 3 into operation.
  • the corresponding cabling is not shown for the sake of clarity however in a known manner.
  • the actuator 10 is biased by a spring 11 so that it pushed back into its starting position by releasing the actuating device 10 and the switch 9 is interrupted. This will cut the power interrupted to the drive motor 3 in a known manner.
  • the drive motor 3 is a conventional electric motor that has a motor shaft 12 having.
  • a pinion 13 is arranged on the motor shaft 12 in a rotationally fixed manner.
  • the gear 4 consists of a gear shaft 14 which is rotatable in the housing 2 is mounted and is provided with a spur gear 15 and a pinion 16, each are rotatably mounted on the gear shaft 14.
  • the spur gear 15 is located engages with the pinion 13, whereas the pinion 16 with a Tooth 17 of the rivet setting device 5 is in engagement.
  • the rivet setting device 5 is shown in FIG. 3 in a sectional view.
  • the toothing 17 is part of a ball screw nut 18.
  • the ball screw nut 18 is supported in the axial direction via two thrust bearings 19 and 20.
  • the ball screw nut 18 rotates on a spindle 21.
  • the spindle 21 is supported via a torque support 22 from the housing 2.
  • Balls 23 are arranged between the spindle 21 and the ball screw nut 18. By rotating the ball screw nut 18 there is an axial movement the spindle 21.
  • One end of the rivet setting device 5 is with a clamping device 24 provided for receiving the blind rivets.
  • the tensioning device 24 is made from a chuck housing 25, which is threaded onto the spindle 21 is screwed.
  • the chuck housing tapers inside.
  • Within the chuck jaws 27 are arranged, which also are conical.
  • the inner surfaces 28 of the clamping jaws run parallel to each other.
  • the clamping jaws 27 protrude slightly from the chuck housing 25 out and are supported on a mouthpiece 28, which by a thread 29 is attached to a housing part 30 of the rivet setting device 5 is.
  • a sleeve 31 which is supported by a spring 32 towards the mouthpiece 28 is biased.
  • the sleeve 31 is supported on the clamping jaws 27.
  • the Spring 32 is supported on a support surface 33 of the sleeve 31 and a support surface 34 of the spindle 21.
  • the mouthpiece 28 has a through hole 35 and the sleeve has a through hole 36 on.
  • the through hole 35 and 36 form together with the jaws 27 a channel 37.
  • the sleeve 31 At the end of the sleeve 31 facing away from the mouthpiece, the sleeve opens into a Tube 38 which is attached to the housing 2.
  • the sleeve 31 is telescopic in the pipe 38 out.
  • the sleeve 31 is axially displaceable in a through hole 39 of the spindle added.
  • the sleeve 31 is displaceable in the axial direction stored.
  • the tube 38 opens into an opening 40 through which the Rivet pins can fall out of the sleeve 31 after the rivet setting process.
  • the flywheel 42 In the housing 2 there is also a flywheel 42 in two bearings 41 rotatably mounted.
  • the flywheel 42 has an axis of rotation 43
  • a clutch disc 44 is mounted on the side of the axis of rotation in a rotationally fixed manner.
  • the drive motor 3 has a matching additional clutch disc on its motor shaft 12 45 on.
  • the clutch disc 45 is connected to the motor shaft 12 and the drive motor 3 set in the axial direction.
  • the flywheel 42 with the clutch disc 44 and the axis of rotation 43 is in slidable in the axial direction.
  • a clutch slider 46 set in the axial direction.
  • the clutch slide has at its upper end a fork 47 within which a switching pin 48 is arranged.
  • the switching pin 48 is fixedly connected to the sleeve 31. During the rivet setting process, the switching pin 48 moves together with the sleeve 31 from left to right in Fig. 1.
  • the switching pin 38 engages with the fork 47 and moves the axis of rotation 43 together with the flywheel 42 and the clutch disc 44 also to the right so that the clutch disc 44 and 45 disengaged. This decouples the flywheel from the engine.
  • the rivet setting device 5 is returned the fork 47 and the switching pin 48 out of engagement again.
  • Axis of rotation 43 again axially displaceable in the direction of the drive motor.
  • By a device, not shown, can be connected to the clutch disc 44 and 45 be brought back into engagement when the rivet setting device 5 is in the Starting position and a new setting process is to be started.
  • the clutch discs can e.g. B. be designed as a friction clutch. With a Deep it could also be designed as a claw coupling, which is the advantage has that no axial forces have to be applied.
  • it can Flywheel 42 with the associated clutch disc 44 by not closer electromagnetic device shown from a decoupled position, in which the two clutch plates 44 and 45 are spaced apart are transferred to an engaged position in which the two clutch plates 44 and 45 lie against each other.
  • the electromagnetic, not shown Device acts on the flywheel 42 with the clutch disc 44 with an axial force towards the second clutch plate 45, so that a Friction between the clutch discs 44 and 45 arises. This creates a frictional connection between the motor shaft 12 and the flywheel 42.
  • the flywheel can then be set as desired by a control system (not shown in detail) be engaged and disengaged.
  • the controller operates the electromagnetic device for Axial displacement of the flywheel 42 with the clutch disc 44 such that when a rivet is placed, the flywheel is coupled to the motor shaft and when the ball screw nut 18 is returned to its starting position Flywheel and engine shaft are decoupled.
  • this rivet is first inserted into the mouthpiece 28 of the Rivet setting device 5 used.
  • the rivet pin of the rivet extends so far into the Channel 37 in that it is surrounded by the jaws 27.
  • the speed of the motor shaft through the pinion 13, spur gear 15, the pinion 16, the gear shaft 14 and the teeth 17 translated and transferred to the ball screw nut 18.
  • the rotational movement of the ball screw nut 18 is in an axial movement of the Spindle 21 transferred, the spindle 21 for setting the rivet from Mouthpiece 28 spaced.
  • the jaws 27 arrive with the Rivet pin engaged. Due to the conical design of the clamping jaws the rivet pin is firmly clamped.
  • By moving the spindle 21 The rivet pin is pulled through the rivet, the rivet moving in a known manner expands. From a predetermined tractive force or a predetermined one Path of the spindle 21 tears off the pin in a known manner.
  • the engine can now be stopped in different ways. It can either be an investigation the maximum tractive force, or it can simply switch off the drive motor 3 take place according to a predetermined path of the tension spindle.
  • the rivet setting tool can now be set Rivet to be removed.
  • the ball screw nut 18 return to their starting position. This is the direction of rotation of the drive motor 3 changed so that the rotational movement of the drive motor through the ball screw nut 18 in an axial movement of the spindle in now opposite direction is implemented. When the spindle is back in 3, the motor is switched off.
  • the flywheel is particularly advantageous if a large number of Rivets to be placed. This is particularly true in industrial use the manufacture or assembly of e.g. Car bodies the case. There are big ones Amounts of rivets set in a short time.
  • the flywheel can be Avoid voltage peaks, so that overall the energy consumption is strong is reduced.
  • the second embodiment of the invention is shown in FIG. 2. Because the essential Components match those in the first embodiment, only the differences from the first embodiment will now be described.
  • a transmission gear 49 provided by which the speed with axis of rotation 43 opposite the motor shaft 12 is increased, preferably doubled. This allows you to save a lot of energy on a comparatively small flywheel.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
EP99102537A 1998-04-27 1999-02-10 Outil de rivetage Withdrawn EP0953390A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19818756A DE19818756A1 (de) 1998-04-27 1998-04-27 Nietsetzgerät
DE19818756 1998-04-27

Publications (2)

Publication Number Publication Date
EP0953390A2 true EP0953390A2 (fr) 1999-11-03
EP0953390A3 EP0953390A3 (fr) 2000-11-22

Family

ID=7865917

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99102537A Withdrawn EP0953390A3 (fr) 1998-04-27 1999-02-10 Outil de rivetage

Country Status (6)

Country Link
US (1) US6237390B1 (fr)
EP (1) EP0953390A3 (fr)
JP (1) JP3124756B2 (fr)
AU (1) AU718556B2 (fr)
BR (1) BR9901296A (fr)
DE (1) DE19818756A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU723510B1 (en) * 1999-01-26 2000-08-31 M. H. Honsel Beteiligungs Gmbh Rivet setting device
WO2014009753A1 (fr) * 2012-07-13 2014-01-16 Henrob Limited Appareil et procédés de rivetage aveugle
EP2985094A1 (fr) * 2014-08-15 2016-02-17 GESIPA Blindniettechnik GmbH Appareil de pose et procédé de fabrication d'une liaison fixe à l'aide d'un élément de liaison
EP2985093A1 (fr) * 2014-08-15 2016-02-17 GESIPA Blindniettechnik GmbH Appareil de pose de rivets aveugles et procédé de pose d'un rivet aveugle
EP3539685A1 (fr) * 2018-03-13 2019-09-18 Lisi Aerospace Outillage et procede de pose d'une fixation aveugle
CN110769949A (zh) * 2017-06-19 2020-02-07 株式会社牧田 紧固工具
CN110769950A (zh) * 2017-06-19 2020-02-07 株式会社牧田 紧固工具
EP3530371A4 (fr) * 2016-11-30 2020-07-22 Makita Corporation Outil de fixation

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US7075257B2 (en) * 2002-10-18 2006-07-11 Black & Decker Inc. Method and device for braking a motor
US7023159B2 (en) 2002-10-18 2006-04-04 Black & Decker Inc. Method and device for braking a motor
US7802352B2 (en) * 2005-04-13 2010-09-28 Newfrey Llc Monitoring system for fastener setting tool
US7823434B2 (en) * 2007-04-27 2010-11-02 Wilson Tool International Inc. Live tooling systems for machine tools
US20090031545A1 (en) * 2007-08-01 2009-02-05 Abeo, Llc Rivet gun
ITBO20080117A1 (it) * 2008-02-21 2009-08-22 Ober S P A Dispositivo elettro-idraulico a pistola con controllo elettronico per la deformazione di elementi di fissaggio
JP5674691B2 (ja) * 2012-02-23 2015-02-25 株式会社ロブテックス 電動リベッター
DE102013208298A1 (de) * 2013-05-06 2014-11-06 Adolf Würth GmbH & Co. KG Kinetische Kupplung von Baugruppen eines Setzgeräts zum Setzen eines Befestigungselements
EP2910321B1 (fr) * 2014-02-24 2018-10-17 GESIPA Blindniettechnik GmbH Appareil de pose de rivets aveugles
DE102016124746A1 (de) 2016-12-19 2018-06-21 Mtg Hartmut Thiele Gmbh Nietwerkzeug
TWI730281B (zh) 2018-01-03 2021-06-11 美商米沃奇電子工具公司 電動工具中之電子制動技術
CN108746459B (zh) * 2018-07-21 2024-10-08 上海安字实业有限公司 双向柔性触动的电动铆接工具
US11396038B2 (en) * 2019-09-06 2022-07-26 Makita Corporation Fastening tool
JP7490467B2 (ja) * 2020-06-23 2024-05-27 株式会社マキタ 締結工具
TWI745048B (zh) * 2020-08-25 2021-11-01 朝程工業股份有限公司 電動拉帽機

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US4042036A (en) * 1973-10-04 1977-08-16 Smith James E Electric impact tool
US3955739A (en) * 1974-12-30 1976-05-11 The Milford Rivet & Machine Company Hydraulically operated riveting machine
US3967770A (en) * 1975-07-03 1976-07-06 Lawrence Peska Associates, Inc. Interlock for eye setting machine
US4085337A (en) * 1975-10-07 1978-04-18 Moeller Wolfgang W Electric drill multi-functional apparatus
JPH0475882A (ja) * 1990-07-13 1992-03-10 Makita Corp 電動工具
DE4126602A1 (de) 1991-08-12 1993-02-18 Gesipa Blindniettechnik Blindnietgeraet
US5136873A (en) * 1991-11-13 1992-08-11 S.A.R.G. Research Assoc, Ltd. Automatic blind rivet setting device
GB9126338D0 (en) * 1991-12-11 1992-02-12 Glynwed Eng Fastener applicator
AU4055995A (en) * 1995-02-15 1996-08-22 World Wide Product Development Company Limited Power operated self-drilling rivet setting tool

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU723510B1 (en) * 1999-01-26 2000-08-31 M. H. Honsel Beteiligungs Gmbh Rivet setting device
US10464122B2 (en) 2012-07-13 2019-11-05 Atlas Copco Ias Uk Limited Spot-joining apparatus and methods
WO2014009753A1 (fr) * 2012-07-13 2014-01-16 Henrob Limited Appareil et procédés de rivetage aveugle
CN104640649A (zh) * 2012-07-13 2015-05-20 亨罗布有限公司 盲铆接装置和方法
EP3141316A1 (fr) * 2012-07-13 2017-03-15 Henrob Limited Appareil et procédé de rivetage aveugle
CN104640649B (zh) * 2012-07-13 2017-04-05 亨罗布有限公司 盲铆接装置和方法
US10695822B2 (en) 2012-07-13 2020-06-30 Atlas Copco Ias Uk Limited Blind riveting apparatus and methods
EP2985094A1 (fr) * 2014-08-15 2016-02-17 GESIPA Blindniettechnik GmbH Appareil de pose et procédé de fabrication d'une liaison fixe à l'aide d'un élément de liaison
EP2985093A1 (fr) * 2014-08-15 2016-02-17 GESIPA Blindniettechnik GmbH Appareil de pose de rivets aveugles et procédé de pose d'un rivet aveugle
US10118215B2 (en) 2014-08-15 2018-11-06 Gesipa Blindniettechnik Gmbh Blind rivet setting device and method for setting a blind rivet
EP3530371A4 (fr) * 2016-11-30 2020-07-22 Makita Corporation Outil de fixation
US11185913B2 (en) 2016-11-30 2021-11-30 Makita Corporation Fastening tool
CN110769949A (zh) * 2017-06-19 2020-02-07 株式会社牧田 紧固工具
CN110769950A (zh) * 2017-06-19 2020-02-07 株式会社牧田 紧固工具
US11117185B2 (en) 2017-06-19 2021-09-14 Makita Corporation Fastening tool
US11161168B2 (en) 2017-06-19 2021-11-02 Makita Corporation Fastening tool
CN110270957A (zh) * 2018-03-13 2019-09-24 Lisi航空 盲式紧固件的安装工具和安装紧固件的方法
FR3078906A1 (fr) * 2018-03-13 2019-09-20 Lisi Aerospace Outillage de pose d’une fixation aveugle et procede de pose d’une fixation
EP3539685A1 (fr) * 2018-03-13 2019-09-18 Lisi Aerospace Outillage et procede de pose d'une fixation aveugle
US10894284B2 (en) 2018-03-13 2021-01-19 Lisi Aerospace Installation tool for a blind fastener and installation procedure for a fastener

Also Published As

Publication number Publication date
JP3124756B2 (ja) 2001-01-15
DE19818756A1 (de) 1999-11-04
US6237390B1 (en) 2001-05-29
AU2379099A (en) 1999-11-11
EP0953390A3 (fr) 2000-11-22
AU718556B2 (en) 2000-04-13
JPH11320016A (ja) 1999-11-24
BR9901296A (pt) 2000-01-04

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