EP0610706B1 - Improvement in a plate bending process and related machine - Google Patents
Improvement in a plate bending process and related machine Download PDFInfo
- Publication number
- EP0610706B1 EP0610706B1 EP94100971A EP94100971A EP0610706B1 EP 0610706 B1 EP0610706 B1 EP 0610706B1 EP 94100971 A EP94100971 A EP 94100971A EP 94100971 A EP94100971 A EP 94100971A EP 0610706 B1 EP0610706 B1 EP 0610706B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- blank
- bending
- piston
- holder means
- knife
- 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
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/04—Bending sheet metal along straight lines, e.g. to form simple curves on brakes making use of clamping means on one side of the work
- B21D5/045—With a wiping movement of the bending blade
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/04—Bending sheet metal along straight lines, e.g. to form simple curves on brakes making use of clamping means on one side of the work
- B21D5/042—With a rotational movement of the bending blade
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
- Treatment Of Fiber Materials (AREA)
Abstract
Description
- This invention relates to a new sheet-metal bending process for metal plates, in particular to make bends with a greater angle than 90° in the butt-end or edge portion of sheet-metal plates with an elongated shape, as performed preferably by numerical-control (NC) presses, as well as the machines arranged to carry out such a process.
- Press-bending is a widely known technology in the sheet-metal forming industry, where it is used in much the same manner by the various manufacturers, except for some minor differences due mainly to various extents of automation implemented in the respective manufacturing processes.
- Such a technology is substantially based on the following fabrication cycle, which is briefly outlined below in order to facilitate a comparison with the cycle according to the present invention, which will be described further on.
- Essentially, the sheet-metal bending process is carried out in two distinct phases, which consist in Placing the sheet-metal plate to be folded on an appropriate anvil, which is generally known in the art by its name of 'dihedron' and is accordingly provided with an angled concavity, and in the downstroke of a plunger carrying, duly attached to its downward facing end, an appropriately shaped tool, which is generally known in the art by its name of 'knife'.
- In general, such an angled concavity of the dihedron and the knife are given such a shape that they are capable of fitting together perfectly.
- The progressively applied pressure of the knife against the sheet-metal plate, whereas the dihedron acts as an opposing and forming element, brings about the desired bending and plastic deformation effect in the sheet-metal plate while the latter is clamped by said elements, as anyone skilled in the art is well aware of. However, the use of this technique is limited to the bending of sheet-metal plates being quite small in their size. Actually, the following rule-of-thumb applies in general: the greater the bending angle, the smaller the size of the sheet-metal plate.
- The problems, therefore, arise when handling larger-sized sheet-metal plates and, particularly, when the need arises to bend beyond 90°, ie. creating 'undercuts', the butt-end or edge portions of elongated-shape sheet-metal plates, preferably by means of a single sheet-metal bending operation.
- Actually, it is theoretically possible to bend by such a large angle the butt-end or edge portion of a sheet-metal plate with a single sheet-metal bending operation. This, however, would require that the plate is not clamped in the process, but on the contrary stays free, and this would in turn bring about a number of undesired consequences. As a matter of fact, in such a case the penetration of the knife in the dihedron and the resulting deformation of the sheet-metal plate placed therebetween would cause the 'length' portion of the same plate, ie. the portion which is not actually involved by the bending process, to be rotated by an angle corresponding to the desired inclination of the bend.
- This has a number of unavoidable drawbacks as a consequence: on one hand, a great amount of raising motion by the rotation of the sheet-metal plate due to the sheet-metal bending operation is in general considered to be unacceptable owing to the really huge space requirements that this would imply, also in connection with the safety areas to be arranged therearound. On the other hand, if the sheet-metal plate is rather long, its raising may cause the plate to sag near the bending line owing to the flexural or bending load imposed by the weight of the raised portion of the sheet-metal plate. In practice, it is therefore not possible to obtain, by a single sheet-metal bending operation, the formation of a butt-end or edge bend in a sheet-metal plate with large bending angles, in particular with bending angles larger than 90° or undercuts, while keeping the plate in its horizontal position.
- From JP 59-33032 a bending machine is known which is able to bend a long sheet by using a punch which is equipped with a cam mechanism and has an inclined shape. This machine needs also a plurality of
punch guides 6 what turns the machine more complicate, less compact and less flexible. - Furthermore, for each shape of butt-end bend to be made a special set of tools needs to be employed, ie. a special knife and a corresponding dihedron. This, of course, brings about considerable costs owing to both the number of tool sets needed and their replacement, or set-up, at each model change in production.
- It therefore would be desirable, and it is actually an object of the present invention, to provide a sheet-metal bending process which is able to eliminate all of the afore cited drawbacks and, in particular, to enable the length portion of the sheet-metal plate to be kept constantly on its horizontal plane , and which is reliable, cost-effective, easily implemented through the use of currently available techniques and equipment, as well as to provide a machine which is capable of performing said process.
- In order that the present invention may more readily be understood, the following description is given, merely by way of non-limiting example, reference being made to the accompanying drawings in which:
- Figure 1 is a schematical view of a machine according to the present invention in its starting position;
- Figures 2, 3, 4 and 5 are views showing four subsequent operating positions of the machine according to the present invention.
- The process according to the present invention is based essentially on the fact that the bending operation is performed in three distinct phases, wherein a blank-holder is lowered in the first phase, by means of an appropriate motor-driven piston, on to the plate to be bent so as to keep it firmly between said blank-holder and an appropriate anvil , wherein in the second phase the continuation of said downward displacement of the piston that caused the blank-holder to go down causes a knife to be pushed downward, the lower end of said knife abutting then against the sheet-metal plate to be bent and causing it to therefore rotate around an appropriate edge of said anvil so as to cause said plate to undergo a first 90°-bending, and wherein in the third phase the continued downward movement of said piston forces the rotation and the consequential lowering of said knife so that one of its ends presses on the bent side of the sheet-metal plate, thereby causing it to further bend around the corresponding inclined and re-entrant edge of the anvil, as this is apparent from the illustrations in the Figures and the following description of the machine.
- Referring now to the accompanying Figures, these are seen to illustrate a machine comprising following elements:
- 1 •
- Sheet-metal plate to be bent
- 1a •
- Edge portion of the plate bent by a 90°-angle
- 1b •
- Edge portion of the plate bent by a greater angle than 90°
- 2 •
- Anvil or dihedron
- 3 •
- Thrust generating and transmitting piston
- 4 •
- Blank-holder
- 5 •
- Spring transmitting pressure from
piston 3 toblank holder 4 - 6 •
- Thrust pin acting on
knife 11 - 7 •
- Head of said
pin 6 - 8 •
- Abutment of the
head 7 of thepin 6 against thelever 11a - 9 •
- Travel path of the
pin 6 - 10 •
- Rotation rod of
knife 11 - 11 •
- Knife for bending
edge portion 1a, 1b ofplate 1 - 11a •
- Actuating lever for
knife 11 - 12 •
- Lower operating end of
knife 11 - 13 •
- Terminal bending tip of
knife 11 - 14 •
- Spring contrasting rotation of
knife 11 - 15 •
- Lower re-entrant edge of
anvil 2. - All these elements are interconnected and operate as follows:
- At the beginning of the process (Fig. 1), the sheet-
metal plate 1 is laid upon theanvil 2. The blank-holder 4 and thepiston 3 are separated by a free space of mutual displacement and are connected by aspring 5 and apin 5a whose purpose, operation and peculiarities will be further explained later on. - The body of the
piston 3 is raised and, therefore, both thespring 5 of the blank-holder 4, arranged between said blank-holder and thepiston 3, and thespring 14 contrasting theknife 11, arranged between thelever 11a of said knife and thepiston 3, are extended, ie. relaxed, since they work as compression springs. Theknife 11 and itsactuation lever 11a are connected with thepiston 3 through therod 10 that is fixedly provided on said piston, said rod being the force transmitting element that actually causes said knife and said lever to rotate with respect to thepiston 3. - The
thrust pin 6 , which is firmly associated with the blank-holder on its upper portion, lies at the bottom end of its stroke with respect to thepiston 3, the blank-holder 4 lies in a raised position with respect to the sheet-metal plate 1, while theknife 11, which is at rest, lies in a substantially vertical position, rotated to its clockwise uttermost position, due to the action of thespring 14 that pushes theactuation lever 11a against an appropriate abutment (not shown) situated on thepiston 3. Thelower end 12 of saidknife 11 is separated from the sheet-metal plate by a distance which is greater than the distance separating the same plate from the lower surface of the blank-holder 4. - In the next phase of the process (Fig. 2), the thrust generating and transmitting
piston 3 is lowered until the blank-holder 4 is enabled to come into contact with the sheet-metal plate 1. All of the remaining elements of the system keep on the other hand an unchanged position with respect to each other. - By continuing its downward displacement (Fig. 3), said
piston 3 completes a further downstroke by a length that is equal to the height difference "L" between the lower surface of the blank-holder 4 and thelower end 12 of theknife 11, thereby compressing thespring 5. In this phase of the process, thelower end 12 of theknife 11, which is actuated by therod 10, goes down to come into contact with the protruding edge portion of theplate 1, however without exerting any pressure on it yet. Furthermore, thespring 14 between thelever 11a and thepiston 3 is not compressed, since it is not being loaded yet, due to thehead 7 of thepin 6 not having yet reached theabutment 8 located on the lower side of thelever 11a. - In the following phase (Fig. 4), the thrust generating and transmitting
piston 3, continuing in its downward displacement, pushes through therod 10 theknife 11 further downward, so that thelower end 12 of saidknife 11 is now able to push, and bend by a 90°-angle in an anti-clockwise direction, the edge portion 1a of the sheet-metal plate protruding from theanvil 2. - The further downward displacement of the
piston 3, as it continues its downward stroke even after the blank-holder has come down onto the sheet-metal plate and thelower end 12 of theknife 11 has come down onto the protruding edge portion of the sheet-metal plate 1, is enabled by the fact that there is a free travel space between said piston and said blank-holder, said space being partially used by thepressure transmitting spring 5, saidpressure transmitting spring 5 being guided by thecoaxial pin 5a and thepin 6. - The downstroke of the thrust generating and transmitting
piston 3 continues (Fig. 5) down to the point at which thepin 6, which is rigidly associated with the blank-holder 4, strikes with itshead 7 against theabutment 8; from this point on, the further downward movement of thepiston 3 causes thehead 7 of thepin 6 to accordingly push against saidabutment 8 and this, in turn, causes thelever 11a to be pushed upward, so that the latter, which is journalled on therod 10 attached to thepiston 3, acts in turn to cause in this way theknife 11, and in particular itsterminal tip 13, to rotate in an anti-clockwise direction. - Being already in contact with the edge portion 1a of the plate which has just been bent at right angle, said terminal tip of the knife imparts an anti-clockwise rotary thrust to the same edge portion in such a way that said edge portion (1b) of the plate undergoes further bending about the edge of the anvil toward the reentrant inclined edge 15, however without touching the latter, and takes therefore the desired inclination which, apart from the sizing of the various afore described components, will also depend on the particular sequencing of the various actuators and movements of the machine, as made possible by the numerical-control technology.
- Once this last process phase is completed, the machine is restored in its initial starting condition shown in Fig. 1 by simply raising the
piston 3 so that the latter will move with it the various afore cited operating elements of the machine by performing automatically, in a reverse sequence, the various afore illustrated movements until the initial positions of said elements are fully recovered owing also to the action of thesprings - This process, in conjunction with the described machine, enable following further advantages to be achieved: simpler bending process, shorter bending times, use of a single anvil for a greater number of inclination or bending angles, easier programming of the whole machine by using the possibilities offered in this connection by the numerical-control technology, simpler and easier implementation of the process, greater operational safety and reliability.
- Anyone skilled in the art will now be in a position as to appreciate that this last operation sequence to reset the machine can be easily integrated with the afore described sequences, by simply programming in a suitable way, as anyone skilled in the art is certainly able to do, the control and actuation system of the machine.
- It will be further apparent that the above illustrated process and machine may be the subject of any modification and/or addition to accomodate any of a number of construction and/or operation variants that may be considered to be appropriate, such as for instance a construction geometry that is the inverse of the one being shown and illustrated here, or the use of springs that operate in an extension mode rather than in a compression one and that are appropriately relocated, or even an inverted arrangement of the
pin 6 which may therefore be attached to thelever 11a and operated to act on the blank-holder 4, instead of the opposite arrangement described and illustrated here by way of example.
Claims (4)
- Bending machine for bending a plate of press-formable material, comprising a blank-holder means (4) to firmly hold the plate (1) on the horizontal plane between said blank-holder means and an appropriate anvil (2), and a knife-shaped tool (11) to perform the bending operation, said tool (11) being able to perform a first bending phase through a purely translational movement and a second bending phase through a combined translational-rotational movement, where in said first bending phase the edge portion of the plate is bent by a 90° angle and in said second bending phase the bending angle is increased to any greater angle than 90°, and comprising an actuation piston (3) which is connected to said blank-holder means (4) by a further pin (5a) which only allows said piston (3) to move perpendicularly to said blank-holder means, characterized in that :- the knife-shaped tool (11) is rigidly connected to an actuating lever (11a) rotating on a rod (10) whose position is fixed w.r.t. said actuation piston(3),- said lever (11a) extends into a gap between said piston and said blank-holder means (4),- said lever is actuated by engagement of the head of a pin (6) mounted on the blank-holder means or lever, with the other of said blank-holder means or lever.
- Bending machine according to claim 1, characterized in that a first spring (5) is provided to keep elastically separated the piston (3) from the blank-holder means (4) and a second spring (14) is provided to keep elastically separated the piston (3) from the portion of the lever opposite to the connection part of said knife shaped tool.
- Bending machine according to any one of the preceding claims, characterized in that said knife-shaped tool (11) is provided with a bottom face (12) which is substantially flat, and its termination (13) oriented towards said blank-holder means shows an acute angle.
- Bending machine according to claim 3, characterized in that the distance between the bottom face (12) and the plate (1) is less than the distance between the corresponding contact points on the head (7) of said pin (6) and the abutment (8) of said lever (11a), when said actuating piston (3) is at the highest possible position.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT93PN000005A IT1265553B1 (en) | 1993-02-08 | 1993-02-08 | PROCESS AND MACHINE PERFECTED BY PRESS-BENDING |
ITPN930005 | 1993-02-08 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0610706A1 EP0610706A1 (en) | 1994-08-17 |
EP0610706B1 true EP0610706B1 (en) | 1996-10-09 |
Family
ID=11394744
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94100971A Expired - Lifetime EP0610706B1 (en) | 1993-02-08 | 1994-01-24 | Improvement in a plate bending process and related machine |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0610706B1 (en) |
AT (1) | ATE143839T1 (en) |
DE (1) | DE69400647T2 (en) |
ES (1) | ES2095687T3 (en) |
IT (1) | IT1265553B1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108480425A (en) * | 2018-04-17 | 2018-09-04 | 张玉芙 | Full-automatic bending machine and bending method |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE502004004723D1 (en) | 2004-04-06 | 2007-10-04 | Trumpf Maschinen Austria Gmbh | Bending tool for bending workpieces, in particular sheets and bending machine with such a bending tool |
CN102294399A (en) * | 2011-06-30 | 2011-12-28 | 江苏科行环境工程技术有限公司 | Device for processing clamping sleeve of anode plate of electric precipitator |
CN104190757B (en) * | 2014-08-22 | 2016-06-01 | 上海元阳金属制品有限公司 | Bending press |
CN106001271A (en) * | 2016-06-22 | 2016-10-12 | 苏州天朋精密元器件有限公司 | Bending die |
DE102016118175B4 (en) | 2016-09-26 | 2018-08-23 | Trumpf Werkzeugmaschinen Gmbh & Co. Kg | Machine tool and method for processing plate-shaped workpieces |
PL3357597T3 (en) * | 2017-02-02 | 2022-06-06 | K.A. Holding Støvring ApS | Bending piston |
CN109127895B (en) * | 2017-06-15 | 2023-07-25 | 嘉意机床(上海)有限公司 | Bending machine turning forming die and method |
IT201900009657A1 (en) | 2019-06-20 | 2020-12-20 | Dallan Spa | BENDING MACHINE FOR SHEETS AND METHOD OF BENDING SHEETS |
EP3932577A1 (en) * | 2020-07-03 | 2022-01-05 | Schröder Maschinenbau GmbH | Corner tool for a swivel bending machine |
CN113083952B (en) * | 2021-03-18 | 2023-05-23 | 北京中防恒立人防设备有限公司 | Equipment for manufacturing cold rolled steel bending by high-end equipment |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2523483B1 (en) * | 1982-03-19 | 1985-09-27 | Pauzin Alexis | FLAT FOLDING TOOL |
JPS5933032A (en) * | 1982-08-16 | 1984-02-22 | Hitachi Ltd | Metallic die for bending sheet |
JPS642726A (en) * | 1986-12-27 | 1989-01-06 | Maru Kikai Kogyo Kk | Bending die |
-
1993
- 1993-02-08 IT IT93PN000005A patent/IT1265553B1/en active IP Right Grant
-
1994
- 1994-01-24 DE DE69400647T patent/DE69400647T2/en not_active Expired - Fee Related
- 1994-01-24 AT AT94100971T patent/ATE143839T1/en not_active IP Right Cessation
- 1994-01-24 EP EP94100971A patent/EP0610706B1/en not_active Expired - Lifetime
- 1994-01-24 ES ES94100971T patent/ES2095687T3/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108480425A (en) * | 2018-04-17 | 2018-09-04 | 张玉芙 | Full-automatic bending machine and bending method |
CN108480425B (en) * | 2018-04-17 | 2019-07-09 | 张玉芙 | Full-automatic bending machine and bending method |
Also Published As
Publication number | Publication date |
---|---|
DE69400647T2 (en) | 1997-05-07 |
IT1265553B1 (en) | 1996-11-22 |
ATE143839T1 (en) | 1996-10-15 |
EP0610706A1 (en) | 1994-08-17 |
ITPN930005A1 (en) | 1994-08-08 |
DE69400647D1 (en) | 1996-11-14 |
ES2095687T3 (en) | 1997-02-16 |
ITPN930005A0 (en) | 1993-02-08 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0610706B1 (en) | Improvement in a plate bending process and related machine | |
TW393363B (en) | Apparatus for carrying out an operation mechanical workpiece | |
EP1772204A1 (en) | "Bending press for pieces of sheet metal with integrated manipulator in a rear positioning device" | |
EP2915655A1 (en) | Device for converting flat pouch into tetrahedral pouch in rotary packaging machine | |
US5957517A (en) | Structure clamp device for the clinching and conveyance of unusually shaped objects | |
US7562551B2 (en) | Press die set for a multi-step press system | |
CN106825231B (en) | Tool for a stamping machine for reshaping a part of a plate-shaped workpiece and method for using same | |
EP3706930A1 (en) | Bending machine | |
EA013444B1 (en) | Device for gripping workpiece of a transport means for metal-forming machine | |
EP0406300B1 (en) | Bending apparatus | |
US6470727B1 (en) | Bending and squeezing blade for sheet metal bending and squeezing machine and machine utilizing the aforesaid blade | |
CA2013634C (en) | Machine for punching out butterfly clips for fastening to a frame of a spring core | |
EP0834356A1 (en) | A bending machine provided with a blank holder having programmable length | |
SU1440580A1 (en) | Arrangement for bending u-shaped articles | |
US3479855A (en) | Corrugating machine | |
US20060037377A1 (en) | Hemming tool die assembly | |
WO1996024445A1 (en) | Bending apparatus for metal sheets | |
SU1344466A1 (en) | Progressive die for manufacturing parts having unbent member | |
GB2197806A (en) | Automatic apparatus for the production of stationary contacts for electromagnetic relays | |
KR101662453B1 (en) | Mold Unit for Forming Wire-hanger and Apparatus for Manufacturing Wire-hanger Having the Same | |
US4283932A (en) | Toggle-actuated punch stripper | |
JP2010143093A (en) | Bending processing apparatus of sheet-like material | |
JPH0117772B2 (en) | ||
RU33338U1 (en) | Device for manufacturing products with several bends in the horizontal and deflection in the vertical planes | |
EP0213193A1 (en) | Article transfer mechanism |
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): AT BE CH DE ES FR GB IT LI NL SE |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: DE NARDI, IRENEO |
|
17P | Request for examination filed |
Effective date: 19941024 |
|
17Q | First examination report despatched |
Effective date: 19950307 |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
ITF | It: translation for a ep patent filed |
Owner name: PROPRIA PROTEZIONE PROPR. IND. |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
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): AT BE CH DE ES FR GB IT LI NL SE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Effective date: 19961009 Ref country code: CH Effective date: 19961009 Ref country code: BE Effective date: 19961009 Ref country code: AT Effective date: 19961009 |
|
REF | Corresponds to: |
Ref document number: 143839 Country of ref document: AT Date of ref document: 19961015 Kind code of ref document: T |
|
REF | Corresponds to: |
Ref document number: 69400647 Country of ref document: DE Date of ref document: 19961114 |
|
ET | Fr: translation filed | ||
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Effective date: 19970125 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2095687 Country of ref document: ES Kind code of ref document: T3 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
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 | ||
EUG | Se: european patent has lapsed |
Ref document number: 94100971.4 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19980801 |
|
NLV4 | Nl: lapsed or anulled due to non-payment of the annual fee |
Effective date: 19980801 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 19981211 Year of fee payment: 6 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 19981222 Year of fee payment: 6 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 19981223 Year of fee payment: 6 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: ES Payment date: 19990112 Year of fee payment: 6 |
|
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: 20000124 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION Effective date: 20000125 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20000124 |
|
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: 20000929 |
|
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: 20001101 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FD2A Effective date: 20010910 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 20050124 |