EP0591104B1 - Vorrichtung für die Ultraschall-Erosion an einem Werkstück - Google Patents
Vorrichtung für die Ultraschall-Erosion an einem Werkstück Download PDFInfo
- Publication number
- EP0591104B1 EP0591104B1 EP93810666A EP93810666A EP0591104B1 EP 0591104 B1 EP0591104 B1 EP 0591104B1 EP 93810666 A EP93810666 A EP 93810666A EP 93810666 A EP93810666 A EP 93810666A EP 0591104 B1 EP0591104 B1 EP 0591104B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- transducer
- transformer
- tool
- designed
- hollow shaft
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
- B24B1/04—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes subjecting the grinding or polishing tools, the abrading or polishing medium or work to vibration, e.g. grinding with ultrasonic frequency
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B3/00—Methods or apparatus specially adapted for transmitting mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B3/02—Methods or apparatus specially adapted for transmitting mechanical vibrations of infrasonic, sonic, or ultrasonic frequency involving a change of amplitude
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/04—Headstocks; Working-spindles; Features relating thereto
Definitions
- the invention relates to a device for ultrasonic erosion on a workpiece according to the preamble of claim 1.
- Such devices are particularly suitable for the processing of hard and brittle materials such as glass or Ceramics.
- the tool rotates to increase the removal rate, the tool with an abrasive grain, for example made of diamond. Alternatively can also be worked with a loose abrasive grain.
- the entire height can also be coupled several amplifier stages can be reduced to ⁇ / 2.
- the clamping of the entire system also becomes essential facilitated.
- the vibration nodes of the individual components can also be arranged on a single level, this also opens up the possibility of lateral support of the components with each other at the node level.
- the Design of the components as a contactless rotor can determine the moment of inertia and the imbalance of the tool spindle be kept very small. As a result, they are high Speeds possible. Storage in the non-contact Bearing causes little friction and it also allows the rotor with the attached to it Tool parts can be changed easily.
- the bearings can be hydrostatic, magnetostatic or be aerostatic bearings.
- Non-contact Bearings of this type are also used in other machine tools used and are already known to the expert. In the Using hydrostatic bearings can also do that at the same time Problem of the necessary cooling of the transducer optimally solved will.
- the converter can be designed as a hollow shaft and Transformer can be concentric in the hollow shaft be held that the vibration nodes of the transducer and of the transformer are approximately on the same level.
- the transformer can also be designed as a hollow shaft and the converter can be in the hollow shaft be held that the vibration nodes of the transducer and of the transformer are approximately on the same level.
- the transformer and the converter can be easily done supported against each other in the plane of their vibration node be.
- Converter and internal transformer of the converter is designed as a magnetostrictive vibrator, which of is surrounded by a stationary excitation coil.
- the power supply to the stationary excitation coil is completely unproblematic and takes place via fixed lines. As a result, the fall for the Power transmission on rotating parts required slip rings path.
- the transducer can also be used as a piezoelectric oscillator be formed, the slip rings for the in the node plane Power supply carries.
- a drive shaft is roughly at the common node level attacks on the converter or transformer can be relative simple couplings are used in which the longitudinal vibration does not have to be considered.
- So he can Transformer can be designed, for example, as a hollow shaft, the coupling means being arranged at the end of a drive shaft which protrudes into the transformer.
- On the converter can of course also be used in the same way Be hollow shaft.
- the coupling agent can Have permanent magnets, which rotates the drive shaft connects to the converter or to the transformer.
- To transmit the rotary movement from the drive device on the tool spindle or on the rotor would be a matter of course other coupling means are also conceivable, e.g. contactless magnetic couplings, fluid couplings or the like. Also a transmission of the rotary movement by means of a suitable gear would be conceivable.
- the rotor is preferably mounted so that it is on the tool side Can be pulled out of the bearing points in the axial direction is.
- the processing device consists of a Housing 21, in which on a winding support 12 a Excitation coil 3 is arranged.
- the excitation coil is with one High frequency generator 4 connected.
- a tubular transducer 2 is mounted in the housing 21 at the bearings 6 and 6 '.
- the tubular transducer 2 consists of a magnetostrictive Material, for example made of nickel. It forms together with the excitation coil 3 a magnetostrictive transducer with the Node level 9, at its two ends, as in the diagram shown on the right, with a certain amplitude AAW swings.
- the converter 2 is on at one end a coupling point 8 coupled to a transformer 7, which acts as a mechanical vibration transformer.
- the material cross section is on the tool side End smaller than at the coupling point 8.
- the input amplitude EAT amplified at the top of the transformer 7 as a result of the cross-sectional reduction up to the initial amplitude AAT at the tool end of the transformer.
- a tool holder 14 is provided on the tool end, which is, for example, a diamond-tipped tool 13 can record.
- the tool-side could also be used End of the transformer 7 itself immediately as Be designed tool.
- the tool 13 can a workpiece 1 made of hard material, for example with a Bore.
- the transformer 7 is itself tubular. in the The area of its node level 9 is fixed or detachable Connection 15 with a drive shaft 11, which in the Transformer protrudes.
- the drive shaft is with a continuous channel 19 through which a rinsing liquid can be pumped to the tool 13.
- the drive shaft 11 is connected to a drive device 5 a clutch 17 releasably connected.
- a centering support 20 supports the drive shaft 11 when changing the rotor.
- the drive device 5 is preferably an electric motor.
- the converter 2 and the transformer form 7 a total of a rotor 18, which serves as a tool spindle.
- the rotor 18 is rotating Provide groove 24.
- a tool changer can be attached to this groove 23 of an automatic changing device take the rotor and pull them out of the bearings 6, 6 '. This will no longer individual tools, but whole ones Tool units that are already part of the electroacoustic Form converter.
- the converter 2 is as piezoelectric vibrator formed by the two piezoelectric disks 25, 25 'is excited.
- the peculiarity this converter consists in the fact that around the Masses vibrating at the node level are not as usual due to the Piezoelectric disks are separated, but in one piece are trained.
- the elastic connection between the both masses is due to the relatively thin-walled section of the Transformer formed in the area of the node level.
- the preload the piezoelectric washers are made using a ring nut 26.
- This version of the converter allows contactless Storage in bearings 6 and 6 '.
- the slip rings 27 and 27 ' which lie approximately in the node level 9 the power supply to the piezoelectric disks 25 and 25 '.
- the internal transformer thus vibrates at the tool end with the output amplitude AAT.
- the tool 13 is by means of the tool holder 14 attached to the transformer.
- the transformer is for Increasing the mechanical rigidity in the node level 9 via the support 10 on the piezoelectric disks supported, which in turn on the converter by means of insulating ring 28 lie on.
- the entire rotor 18 is driven by the Drive shaft 11, analogous to the embodiment shown in FIG 1.
- the releasable clutch 17 transmits the drive torque, the exact axial position by a stop surface 29 the rotor after a tool change is secured.
- the Coupling 17 also connects the coolant to one Coolant source for tool cooling, not shown here forth.
- the centering support 20 ensures coaxiality the drive shaft 11 during a change operation.
- the entire rotor 18 is changed in the same way as in the exemplary embodiment according to FIG. 1.
- the converter 2 also designed as a piezoelectric vibrator. in the Contrary to the embodiment of Figure 2 is here however, the converter 2 is surrounded by the transformer 7. Necessarily the power supply to the piezo disks 25 and 25 'through the slip rings 27, 27' through the transformer 7 done through.
- the piezoelectric transducer 2 is from conventional design, i.e. the two masses on both Sides of the piezo disks are completely separate from each other and only connected to one another via the hollow screw 26.
- the amplitude gain from the input amplitude EAT to Output amplitude AAT is done in the same way, however the tool 13 or the tool holder 14 a have to have a slightly different configuration.
- the rotor change is the same as for the previous ones Embodiments.
- the connection is also identical of the rotor 18 with the drive device 5.
- FIG. 1 is particularly suitable advantageous for high speeds because no slip rings are required are.
- FIGS. 2 and 3 have a slightly higher efficiency thanks to the piezo technology, however, are more suitable for lower speeds.
- the use of Tools with a larger diameter, in particular circular ones Tools easily possible.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Description
- Figur 1
- einen magnetostriktiven Schwinger mit aussenliegendem Wandler und innenliegendem Transformator,
- Figur 2
- einen piezoelektrischen Schwinger mit aussenliegendem Wandler und innenliegendem Transformator, und
- Figur 3
- einen piezoelektrischen Schwinger mit aussenliegendem Transformator und innenliegendem Wandler.
Claims (12)
- Vorrichtung für die Ultraschall-Erosion an einem Werkstück (1) mit einem elektroakustischen Wandler (2) zum Erzeugen von Ultraschall-Schwingungen, mit wenigstens einem auf einer Seite des Wandlers angekoppelten Transformator (7) zur mechanischen Transformation der Amplitude des Wandlers und mit einer drehantreibbaren Werkzeugspindel mit einem Werkzeug (13), dadurch gekennzeichnet, dass entweder der Wandler (2) oder der Transformator (7) als Hohlkörper ausgebildet ist und dass der Wandler und der Transformator derart ineinandergeschoben sind, dass sich ihre Baulängen wenigstens teilweise überlappen, wobei der Wandler und der Transformator einen die Werkzeugspindel darstellenden Rotor (18) bilden, der in berührungslosen Lagerstellen (6, 6') gelagert ist.
- Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Lagerstellen (6, 6') hydrostatische Lager sind.
- Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Lagerstellen (6, 6') magnetostatische Lager sind.
- Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Lagerstellen (6, 6') aerostatische Lager sind.
- Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass der Wandler (2) als Hohlwelle ausgebildet ist und dass der Transformator (7) derart konzentrisch in der Hohlwelle gehalten ist, dass die Schwingungsknoten des Wandlers und des Transformators etwa auf der gleichen Ebene liegen.
- Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass der Transformator (7) als Hohlwelle ausgebildet ist und dass der Wandler (2) derart in der Hohlwelle gehalten ist, dass die Schwingungsknoten des Wandlers und des Transformators etwa auf der gleichen Ebene liegen.
- Vorrichtung nach Anspruch 5 oder 6, dadurch gekennzeichnet, dass der Transformator (7) und der Wandler (2) in der Ebene (9) ihres Schwingungsknotens aneinander abgestützt sind.
- Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass der Wandler (2) als magnetostriktiver Schwinger ausgebildet ist, der von einer stationären Erregerspule (3) umgeben ist.
- Vorrichtung nach Anspruch 5 oder 6, dadurch gekennzeichnet, dass der Wandler (2) als piezoelektrischer Schwinger ausgebildet ist, der in der Knotenebene Schleifringe (27, 27') für die Stromzuführung trägt.
- Vorrichtung nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass eine Antriebswelle (11) etwa in der gemeinsamen Knotenebene (9) am Wandler (2) oder am Transformator (7) angreift und eine lösbare Verbindung zu einer Antriebsvorrichtung (5) herstellt.
- Vorrichtung nach Anspruch 10, dadurch gekennzeichnet, dass die Antriebswelle (11) als Hohlwelle für die Zufuhr eines Kühlmittels zum Werkzeug (13) ausgebildet ist.
- Vorrichtung nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, dass der Rotor (18) werkzeugseitig in axialer Richtung aus den Lagerstellen (6, 6') herausziehbar ist.
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH3067/92 | 1992-10-01 | ||
CH306792 | 1992-10-01 | ||
CH306892 | 1992-10-01 | ||
CH3068/92 | 1992-10-01 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0591104A1 EP0591104A1 (de) | 1994-04-06 |
EP0591104B1 true EP0591104B1 (de) | 1998-06-17 |
Family
ID=25692094
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP93810666A Expired - Lifetime EP0591104B1 (de) | 1992-10-01 | 1993-09-21 | Vorrichtung für die Ultraschall-Erosion an einem Werkstück |
Country Status (3)
Country | Link |
---|---|
US (1) | US5361543A (de) |
EP (1) | EP0591104B1 (de) |
DE (1) | DE59308691D1 (de) |
Families Citing this family (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4444853B4 (de) * | 1994-12-16 | 2006-09-28 | Hilti Ag | Handgerät zur materialabtragenden Bearbeitung mit elektroakustischem Wandler für die Erzeugung von Ultraschallschwingungen |
JP3745829B2 (ja) * | 1996-05-15 | 2006-02-15 | 株式会社デンソー | テーパ面研削方法およびテーパ面研削装置 |
SE515173C2 (sv) * | 1999-11-10 | 2001-06-25 | Skf Nova Ab | Anordning vid en verktygsbärande enhet för förflyttning av en roterbar axel i axiell riktning |
JP4842936B2 (ja) * | 2004-07-02 | 2011-12-21 | ザウアー ゲーエムベーハー | 振動ヘッドを有するツール |
ES2659512T3 (es) * | 2004-12-13 | 2018-03-16 | Fritz Studer Ag | Unidad de herramienta para el mecanizado rotativo asistido por ultrasonido |
DE102006045518A1 (de) * | 2006-09-27 | 2008-04-03 | Fischerwerke Artur Fischer Gmbh & Co. Kg | Ultraschall-Schwingungswandler zum Ultraschallbohren |
US7824247B1 (en) | 2007-06-01 | 2010-11-02 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Portable rapid and quiet drill |
KR101521075B1 (ko) * | 2010-04-29 | 2015-05-18 | 에디슨 웰딩 인스티튜트, 인코포레이티드 | 휴대용 장치들과 함께 사용하는 초음파 기계가공 조립체 |
JP5746553B2 (ja) * | 2011-04-28 | 2015-07-08 | 株式会社東芝 | 基板加工システム、および基板加工プログラム |
USD726133S1 (en) | 2012-03-20 | 2015-04-07 | Veeco Instruments Inc. | Keyed spindle |
US9816184B2 (en) | 2012-03-20 | 2017-11-14 | Veeco Instruments Inc. | Keyed wafer carrier |
USD712852S1 (en) | 2012-03-20 | 2014-09-09 | Veeco Instruments Inc. | Spindle key |
US10245652B2 (en) * | 2012-11-05 | 2019-04-02 | M4 Sciences Llc | Rotating tool holder assembly for modulation assisted machining |
CN103447892B (zh) * | 2013-09-13 | 2016-02-24 | 辽宁科技大学 | 玉石浮雕工艺品的超声波磁力复合研磨装置及研磨工艺 |
CN103710494B (zh) * | 2013-12-30 | 2016-04-27 | 江苏大学 | 一种基于超声波的小孔强化方法及装置 |
KR101643736B1 (ko) * | 2014-03-26 | 2016-07-29 | 선문대학교 산학협력단 | 휴대용 표면처리장치 |
DE102014110102A1 (de) * | 2014-04-22 | 2015-10-22 | Inspire AG für mechatronische Produktionssysteme und Fertigungstechnik | Einrichtung zum Bearbeiten von Werkstücken mittels hochfrequenter Schwingungen |
CN104015117B (zh) * | 2014-06-20 | 2016-03-30 | 河北工业大学 | 一种可控振幅的小口径非球面抛光装置 |
CN104138831B (zh) * | 2014-07-25 | 2017-01-18 | 陶晓明 | 高速电主轴通用旋转超声换能器总成 |
JP6594961B2 (ja) * | 2014-09-05 | 2019-10-23 | エジソン・ウェルディング・インスティチュート,インコーポレーテッド | 超音波機械加工モジュールに用いる工具アタッチメント及び軸通過冷却液 |
JP6106248B2 (ja) * | 2014-11-07 | 2017-03-29 | 東台精機股▲ふん▼有限公司Tongtai Machine & Tool Co.,Ltd. | 高周波振動を有する工作機械と検出/フィードバック信号の制御方法 |
CN104624463B (zh) * | 2015-01-09 | 2017-01-25 | 天津大学 | 一种二维超声振动平台 |
US10875138B1 (en) | 2016-08-09 | 2020-12-29 | M4 Sciences Llc | Tool holder assembly for machining system |
TWI615233B (zh) * | 2016-11-29 | 2018-02-21 | 財團法人金屬工業研究發展中心 | 超音波輔助加工裝置 |
US10391609B1 (en) * | 2017-09-05 | 2019-08-27 | Optipro Systems, LLC | Modular contact assembly for rotating machine tool |
TWI699256B (zh) * | 2019-11-12 | 2020-07-21 | 李慧玲 | 超音波刀把總成 |
CN111185357A (zh) * | 2020-01-06 | 2020-05-22 | 清华大学 | 单电路的旋转超磁致伸缩超声换能器 |
CN114918746B (zh) * | 2022-04-26 | 2023-03-10 | 深圳市中扬数控机床有限公司 | 超声波刀柄及超声波数控机床 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2968132A (en) * | 1956-09-18 | 1961-01-17 | Omni American Engineering Comp | Magnetostrictive grinding machine |
US3105482A (en) * | 1960-09-15 | 1963-10-01 | Marie Louise Spira Klein | Machine for drilling holes in hard materials |
US3561462A (en) * | 1969-10-10 | 1971-02-09 | Branson Instr | Ultrasonic drive assembly for machine tool |
US3614484A (en) * | 1970-03-25 | 1971-10-19 | Branson Instr | Ultrasonic motion adapter for a machine tool |
US4180946A (en) * | 1975-10-02 | 1980-01-01 | Maurice Brunet | Tool holding spindle assembly particularly for a grinding machine |
GB1510141A (en) * | 1976-04-02 | 1978-05-10 | Gearing & Watson Ltd | Electromagnetic devices |
JPS5973272A (ja) * | 1982-10-18 | 1984-04-25 | Inoue Japax Res Inc | 数値制御研磨装置 |
DE8805832U1 (de) * | 1988-05-03 | 1988-07-07 | Mafell-Ultrasonics Gmbh Keramik-Erosion, 7238 Oberndorf, De |
-
1993
- 1993-09-09 US US08/118,318 patent/US5361543A/en not_active Expired - Fee Related
- 1993-09-21 DE DE59308691T patent/DE59308691D1/de not_active Expired - Fee Related
- 1993-09-21 EP EP93810666A patent/EP0591104B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0591104A1 (de) | 1994-04-06 |
DE59308691D1 (de) | 1998-07-23 |
US5361543A (en) | 1994-11-08 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0591104B1 (de) | Vorrichtung für die Ultraschall-Erosion an einem Werkstück | |
DE60206006T2 (de) | Spindelstruktur auf Ultraschallmaschine und Traghorn zur Anwendung in derselben | |
DE3919895C2 (de) | Verfahren und Vorrichtung zum Bearbeiten der Innenflächen von Bohrungen | |
DE975266C (de) | Ein eine Materialabnahme bewirkendes Bearbeitungsgeraet | |
EP0720890B1 (de) | Handgerät zur materialabtragenden Bearbeitung von spröden und/oder duktil versagenden Werkstoffen | |
EP1669148B1 (de) | Werkzeugeinheit zur ultraschallunterstützten rotativen Bearbeitung | |
EP0625083B1 (de) | Vorrichtung zum schleifen von werkstücken | |
DE202017100736U1 (de) | Ultraschall-Handbohrmaschine | |
DE2839858A1 (de) | Werkzeugmaschine mit hydrostatisch gelagerter feindrehspindel | |
DE102017121448B3 (de) | Kühlsystem für eine Ultraschall-Bohrmaschine | |
EP0340661A2 (de) | Vorrichtung zur Bearbeitung von sehr hartem Werkstoff mittels eines Bearbeitungswerkzeugs und Verfahren hierzu | |
EP2929981B1 (de) | Haltevorrichtung zur aufnahme und halterung von mindestens einem bauteil und gleitschleifverfahren | |
EP0555285B1 (de) | Verfahren zum bearbeiten der innenflächen von bohrungen | |
DE1279595B (de) | Vorrichtung zum Ziehen von Draehten | |
DE4210928C2 (de) | Ultraschallerregtes Honwerkzeug und Verfahren zu seiner Nachjustierung | |
DE3128228C2 (de) | ||
DE3239720T1 (de) | Innenschleifmaschine | |
EP2937149B1 (de) | Einrichtung zum bearbeiten von werkstücken mittels hochfrequenter schwingungen | |
CH671530A5 (en) | Ultrasonic machining tool for milling or boring applications - has tool crown subjected to both axial and radial oscillations | |
AT236184B (de) | Verfahren und Vorrichtung für den Antrieb mit hoher Drehgeschwindigkeit von Wellen kleinen Durchmessers oder von mit diesen verbundenen zylindrischen Körpern | |
DE3737636A1 (de) | Einrichtung zum buersten von plattenfoermigen werkstuecken | |
DE1143733B (de) | Maschine zum Feinbearbeiten vorgearbeiteter Zentrierbohrungen | |
DE102006029936B4 (de) | Instandsetzungsgerät für ein Schleifwerkzeug und Verfahren zur Instandsetzung eines Schleifwerkzeugs | |
EP2042121A1 (de) | Antrieb für ein dentales Handstück und Verfahren zum Beaufschlagen eines Antriebes mit Schwingungen | |
DE1203027B (de) | UEbertrager-Kopplungssystem fuer Schwingungsenergie |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): CH DE FR GB LI |
|
17P | Request for examination filed |
Effective date: 19940816 |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: EROSONIC AG |
|
19W | Proceedings resumed before grant after interruption of proceedings |
Effective date: 19970903 |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: DAMATEC AG |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
17Q | First examination report despatched |
Effective date: 19971205 |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): CH DE FR GB LI |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
REF | Corresponds to: |
Ref document number: 59308691 Country of ref document: DE Date of ref document: 19980723 |
|
RIN2 | Information on inventor provided after grant (corrected) |
Free format text: BORY, MICHAEL |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: NV Representative=s name: PATENTANWALTSBUERO DIPL.-ING. S. V. KULHAVY + CO. |
|
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 19980917 |
|
ET | Fr: translation filed | ||
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20000925 Year of fee payment: 8 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20000927 Year of fee payment: 8 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20001129 Year of fee payment: 8 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: CH Payment date: 20001219 Year of fee payment: 8 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20010921 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20010930 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20010930 |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20020501 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20010921 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20020531 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |