EP0773854A1 - Power screwdriver and process for tightening screws - Google Patents
Power screwdriver and process for tightening screwsInfo
- Publication number
- EP0773854A1 EP0773854A1 EP95919965A EP95919965A EP0773854A1 EP 0773854 A1 EP0773854 A1 EP 0773854A1 EP 95919965 A EP95919965 A EP 95919965A EP 95919965 A EP95919965 A EP 95919965A EP 0773854 A1 EP0773854 A1 EP 0773854A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- screwdriver
- input shaft
- speed
- output shaft
- drive motor
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
- B25B23/145—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for fluid operated wrenches or screwdrivers
- B25B23/1456—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for fluid operated wrenches or screwdrivers having electrical components
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
- B25B21/02—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose with means for imparting impact to screwdriver blade or nut socket
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
- B25B23/145—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for fluid operated wrenches or screwdrivers
- B25B23/1453—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for fluid operated wrenches or screwdrivers for impact wrenches or screwdrivers
Definitions
- the invention relates to a screwdriver according to the preamble of claim 1 and a method for tightening a screw connection according to the preamble of claim 9 or 10.
- a screwdriver with a hydraulic pulse hammer mechanism is already known (US 4,418,764), in which the amount of effective screwing torque on the screwing tool can be determined by changing the cross section of an overflow channel by means of an adjusting screw.
- the overflow channel is arranged between a high pressure chamber and a low pressure chamber and serves to equalize the pressure of a pressure medium.
- the screwdriver is equipped with a mechanical switch-off device that switches off the rotary drive depending on the pressure of the pressure medium.
- the screwdriver according to the invention with the characterizing features of claim 1 and the method according to the invention with the characterizing features of claim 9 or 10 has the advantage that a simple Structure of the screwdriver is made possible.
- a desired tightening torque can be predefined in a simple manner, it not being necessary to change the cross section of the overflow channel.
- a switch-off criterion for the drive motor can also be specified, so that a mechanical switch-off device is not required.
- the present tightening torque M can be inferred in a simple manner. Together with a device for detecting the angle of rotation change ⁇ of the output shaft of the striking mechanism between successive angular pulses, a determination variable for the present screwing case (hard / soft) can then be determined.
- a simple and precise method for tightening the screw connection can thus be specified, by means of which the required speed n of Input shaft of the hammer mechanism (target speed) can be specified depending on the respective screwing case. In this way, a high accuracy of the screwing torque of the screw connection can be achieved.
- FIG. 1 shows a section through a handheld screwdriver designed according to the invention and
- FIG. 2 shows a section along line II-II in FIG. 1.
- a handheld screwdriver designated by 10 in FIG. 1 has a housing 11 in which a drive motor 12 is accommodated.
- a drive shaft 13 of the drive motor 12 is coupled in a rotationally locking manner to an input shaft 16 of a striking mechanism 17 via a pinion 14 and a transmission gear 15.
- the striking mechanism 17 in turn has an output shaft 18 which, with its end facing away from the striking mechanism 17, protrudes from the housing 11 of the handheld screwdriver 10 and carries a tool holder 19 there for a screwing tool (not shown).
- the drive motor 12 is designed as an electric motor, in particular as an electronically commutated motor, and can be controlled via electrical connecting lines 20, 21.
- the housing 11 forms a handle 23 which is oriented approximately radially away from a drive axis 22.
- a pressure trigger 24 is accommodated in the handle 23, by means of which the drive motor 12 can be switched on and off via a switching device 25.
- Drive motor 12 is supplied with electrical drive energy and, for this purpose, is connected to drive motor 12 or switching device 25 via electrical connecting lines (not shown).
- the striking mechanism 17 is designed as a hydraulic impulse striking mechanism.
- the input shaft 16 forms an approximately cylindrical rotary body 30 which is provided with an axial bore 31 for receiving the output shaft 18 and with a radial bore 32 for receiving a reciprocating piston 33.
- the reciprocating piston 33 in turn has an axial through bore 34 through which the output shaft 18 extends.
- a high-pressure chamber 35 and a low-pressure chamber 36 are formed within the rotating body 30 and are connected to one another via an overflow channel 37.
- the overflow channel 37 runs inside the wall of the rotary body 30.
- the interior of the rotary body 30 is filled with a pressure medium, for example a hydraulic oil.
- the inside of the rotary body 30 is sealed off from the outside by a cover 38 at an opening of the radial bore 32 and by sealing means 39 on the output shaft 18.
- the control cam 52 is designed such that the control cam 51 forces a displacement in the direction of a reduction in the volume of the high pressure chamber 35 once per complete relative rotation from the output shaft 18 to the reciprocating piston 33. This always occurs when the control cam 51 runs onto a control shoulder 53 of the control cam 52.
- a return spring 54 By means of a return spring 54, the reciprocating piston 33 is returned to its starting position after the pulse has been delivered.
- the pressure medium in the high pressure chamber 35 is pressurized, which leads to a momentum moment M being transmitted to the output shaft 18 via the cam control 40.
- the magnitude of the momentum M is the pressure difference ⁇ p between the high pressure chamber 35 and the
- the continuity equation applies to the volume flow dV / dt, i.e. the volume of the overflowing pressure medium corresponds exactly to the reduction in the volume of the high-pressure chamber 35.
- ⁇ (t) represents the difference in the angular velocities of the input shaft 16 and the output shaft 18 and ⁇ indicates the rotational angle difference between these two shafts during the pulse output. Approximately, this angle of rotation difference ⁇ can be set equal to the angle of rotation ⁇ of the input shaft 18.
- the named differential angular velocity ⁇ (t) then also corresponds in good approximation to the angular velocity and thus the rotational speed n of the input shaft 16. The above relationship therefore makes it clear that the volume flow dV / dt and thus the pressure difference ⁇ p (t) or the momentum M can be influenced by the differential angular velocity ⁇ (t) by the speed n of the input shaft 16.
- Gear ratio i of the transmission gear 15 are directly related, the preselection of the speed n can be done via a corresponding control of the drive motor 12.
- the means 27 for preselecting the speed n of the input shaft 16 have a handle 41 for setting a target speed n.
- the handle 41 is designed, for example, as a rotary knob 47 protruding from the housing 11, which cooperates with the switching device 25 in such a way that the operator can preselect the required speed n at which the desired pulse torque M is set on the output shaft 18.
- the switching device 25 is provided with corresponding electrical or electronic control means.
- the handle 41 is used to specify the desired torque setpoint by identifying various switching positions of the rotary knob 47 with corresponding torque setpoints and the assignment of these torque setpoints to the corresponding speed solenoid values internally, e.g. by means of a table in a storage element.
- Speed control device 42 which includes a transducer 43, which detects the actual speed of the input shaft 16 and forwards it via signal lines 45, 46 in signal form to a comparison device 42a of the speed control device 42. In the event of a speed deviation, the speed control device 42 adjusts the drive motor 12 accordingly, so that a stiff characteristic curve can be achieved.
- the transducer 43 is designed as an incremental transducer which, in addition to the detection of the rotational speed n, also permits the determination of the angle of rotation ⁇ of the input shaft 16 between the successive angular pulses.
- the input shaft 16 and the drive shaft 13 are rotationally coupled to one another during the screwing process, so that the speed n and the respective angle of rotation ⁇ of the input shaft 16 can also be determined in the illustrated arrangement of the transducer 43 on the drive shaft 13 via the transmission ratio i.
- the start of a pulse delivery can be recognized, for example, from the speed curve n (t) by a significant drop in speed ⁇ n.
- Speed control device 42 is assigned and which processes the signals received by the transducer 43 and transmitted via the connecting lines 45, 46.
- the evaluation device 44 thus forms, together with the sensor 43, a device for detecting the
- the already mentioned speed drop ⁇ n during the screwing process is also determined by means of the evaluation device 44 and used as a measure for determining the momentum moment M tapped on the tool holder 19. This is sufficiently precise, since it can be assumed that a correspondingly strong drop in speed .DELTA.n occurs with a large pulse output and vice versa.
- the start of the pulse output is also signaled by the start of the speed drop ⁇ n, which is helpful for the aforementioned determination of the angle of rotation ⁇ of the input shaft 16 or the change in angle of rotation ⁇ of the output shaft 18.
- the evaluation device 44 thus, together with the sensor 43, also forms a device for detecting the speed drop ⁇ n of the input shaft 16.
- the ratio ⁇ n / ⁇ of the change in speed ⁇ n of the input shaft 16 to The change in the angle of rotation ⁇ of the output shaft 18 is determined and used as a determination variable for determining the target speed of the input shaft 16.
- the ratio ⁇ n / ⁇ it is possible to draw conclusions about the present screwing case (hard / soft), since the speed drop ⁇ n is proportional to the momentum moment M.
- a hard screwdriving case is characterized by a large ratio M / ⁇ , a soft screwdriving case by a small one. The same applies to the ratio ⁇ n / ⁇ .
- the screw connection can be tightened particularly precisely to a desired torque.
- the evaluation device 44 can be provided, for example, with a memory element in which reference variables of the ratio ⁇ n / ⁇ can be stored.
- the determination of the change in the angle of rotation ⁇ of the output shaft 18 between successive rotary pulses by the evaluation device 44 also allows the specification of a switch-off criterion for the rotary drive.
- a limit value ⁇ is stored in the evaluation device 44, which indicates a minimal change in the angle of rotation ⁇ of the output shaft 18 between successive angular pulses. If this limit value ⁇ is reached in the course of the screwing process, ie if ⁇ ⁇ ⁇ , the screwing torque of the screw connection due to successive angular momentum is no longer significant increases and the evaluation device 44 switches off the drive motor 12 accordingly.
- the invention is not limited to the exemplary embodiment described.
- the screwdriver can also be equipped with any other hydraulic pulse hammer mechanism, for example the multi-blade hammer mechanism known from US 4,418,764.
- a transmission gear between the drive motor and the striking mechanism is not always necessary, depending on the motor type. This also applies to the speed control device.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4427452A DE4427452A1 (en) | 1994-08-03 | 1994-08-03 | Screwdriver and method for tightening a screw connection using the screwdriver |
DE4427452 | 1994-08-03 | ||
PCT/DE1995/000711 WO1996004106A1 (en) | 1994-08-03 | 1995-06-01 | Power screwdriver and process for tightening screws |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0773854A1 true EP0773854A1 (en) | 1997-05-21 |
EP0773854B1 EP0773854B1 (en) | 2000-01-26 |
Family
ID=6524820
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95919965A Expired - Lifetime EP0773854B1 (en) | 1994-08-03 | 1995-06-01 | Power screwdriver and process for tightening screws |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0773854B1 (en) |
JP (1) | JPH10503432A (en) |
DE (2) | DE4427452A1 (en) |
WO (1) | WO1996004106A1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USD703017S1 (en) | 2011-01-07 | 2014-04-22 | Black & Decker Inc. | Screwdriver |
US9199362B2 (en) | 2010-01-07 | 2015-12-01 | Black & Decker Inc. | Power tool having rotary input control |
US9266178B2 (en) | 2010-01-07 | 2016-02-23 | Black & Decker Inc. | Power tool having rotary input control |
US9475180B2 (en) | 2010-01-07 | 2016-10-25 | Black & Decker Inc. | Power tool having rotary input control |
WO2018210585A1 (en) * | 2017-05-16 | 2018-11-22 | Atlas Copco Industrial Technique Ab | Oil level warning at hydraulic impulse wrenches |
US10589413B2 (en) | 2016-06-20 | 2020-03-17 | Black & Decker Inc. | Power tool with anti-kickback control system |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001205575A (en) * | 2000-01-28 | 2001-07-31 | Nitto Kohki Co Ltd | Torque-controlled impact wrench |
JP3361794B2 (en) * | 2000-08-11 | 2003-01-07 | 瓜生製作株式会社 | Impact torque generator for hydraulic torque wrench |
JP4623971B2 (en) * | 2002-04-11 | 2011-02-02 | センサーマチック・エレクトロニックス・コーポレーション | Portable combination electronic article surveillance system and system and method for managing assets using barcode scanner |
US7552781B2 (en) | 2004-10-20 | 2009-06-30 | Black & Decker Inc. | Power tool anti-kickback system with rotational rate sensor |
DE102005056264A1 (en) * | 2005-11-14 | 2007-05-16 | Fein C & E Gmbh | Screwdriver with speed control and method for speed control of a screwdriver |
DE102007045695A1 (en) * | 2007-09-24 | 2009-04-02 | Hs-Technik Gmbh | Hydropneumatic impulse power screwdriver has hydropneumatic drive provided over electro motor with power for generating torsional impulse, where drive shaft is coupled in bolted connection for transferring torsional impulse |
EP2521832B1 (en) | 2010-01-07 | 2020-03-25 | Black & Decker, Inc. | Power screwdriver having rotary input control |
DE102010063080A1 (en) * | 2010-12-14 | 2012-06-14 | Robert Bosch Gmbh | Hand tool with a mechanical percussion |
JP5403110B2 (en) * | 2012-06-04 | 2014-01-29 | マックス株式会社 | Impact tool |
DE102021204317A1 (en) * | 2021-04-29 | 2022-11-03 | Hagn, k.s. | COMPOSITE TOOL |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ES440899A1 (en) * | 1974-09-19 | 1977-06-16 | Standard Pressed Steel Co | Apparatus for and method of determining rotational and linear stiffness |
US4358735A (en) * | 1977-07-25 | 1982-11-09 | Sps Technologies, Inc. | Bidirectional incremental encoding system for measuring maximum forward angular displacement of a bidirectionally rotatable rotating shaft |
DE3103286A1 (en) * | 1981-01-31 | 1982-08-12 | Kress-elektrik GmbH & Co, Elektromotorenfabrik, 7457 Bisingen | Electrical hand-held machine tool for screwing, drilling and possibly hammer-drilling |
US4418764A (en) * | 1981-07-14 | 1983-12-06 | Giken Kogyo Kabushiki Kaisha | Fluid impulse torque tool |
US4609089A (en) * | 1982-12-27 | 1986-09-02 | Kabushiki Kaisha Kuken | Impact wrench for tightening to a desired level |
DE3519352A1 (en) * | 1985-05-30 | 1986-12-04 | Robert Bosch Gmbh, 7000 Stuttgart | SCREW DEVICE WITH MOTOR DRIVEN SCREWDRIVER |
US5014793A (en) * | 1989-04-10 | 1991-05-14 | Measurement Specialties, Inc. | Variable speed DC motor controller apparatus particularly adapted for control of portable-power tools |
-
1994
- 1994-08-03 DE DE4427452A patent/DE4427452A1/en not_active Withdrawn
-
1995
- 1995-06-01 EP EP95919965A patent/EP0773854B1/en not_active Expired - Lifetime
- 1995-06-01 DE DE59507705T patent/DE59507705D1/en not_active Expired - Fee Related
- 1995-06-01 WO PCT/DE1995/000711 patent/WO1996004106A1/en active IP Right Grant
- 1995-06-01 JP JP8506076A patent/JPH10503432A/en active Pending
Non-Patent Citations (1)
Title |
---|
See references of WO9604106A1 * |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9475180B2 (en) | 2010-01-07 | 2016-10-25 | Black & Decker Inc. | Power tool having rotary input control |
US10160049B2 (en) | 2010-01-07 | 2018-12-25 | Black & Decker Inc. | Power tool having rotary input control |
US9211636B2 (en) | 2010-01-07 | 2015-12-15 | Black & Decker Inc. | Power tool having rotary input control |
US9266178B2 (en) | 2010-01-07 | 2016-02-23 | Black & Decker Inc. | Power tool having rotary input control |
US9321156B2 (en) | 2010-01-07 | 2016-04-26 | Black & Decker Inc. | Power tool having rotary input control |
US9321155B2 (en) | 2010-01-07 | 2016-04-26 | Black & Decker Inc. | Power tool having switch and rotary input control |
US9199362B2 (en) | 2010-01-07 | 2015-12-01 | Black & Decker Inc. | Power tool having rotary input control |
USD703017S1 (en) | 2011-01-07 | 2014-04-22 | Black & Decker Inc. | Screwdriver |
US10589413B2 (en) | 2016-06-20 | 2020-03-17 | Black & Decker Inc. | Power tool with anti-kickback control system |
US11192232B2 (en) | 2016-06-20 | 2021-12-07 | Black & Decker Inc. | Power tool with anti-kickback control system |
CN110621444A (en) * | 2017-05-16 | 2019-12-27 | 阿特拉斯·科普柯工业技术公司 | Oil level warning on hydraulic pulse wrench |
WO2018210585A1 (en) * | 2017-05-16 | 2018-11-22 | Atlas Copco Industrial Technique Ab | Oil level warning at hydraulic impulse wrenches |
CN110621444B (en) * | 2017-05-16 | 2021-06-15 | 阿特拉斯·科普柯工业技术公司 | Oil level warning method and system for hydraulic pulse wrench |
US11759926B2 (en) | 2017-05-16 | 2023-09-19 | Atlas Copco Industrial Technique Ab | Oil level warning at hydraulic impulse wrenches |
Also Published As
Publication number | Publication date |
---|---|
EP0773854B1 (en) | 2000-01-26 |
WO1996004106A1 (en) | 1996-02-15 |
DE59507705D1 (en) | 2000-03-02 |
DE4427452A1 (en) | 1996-02-08 |
JPH10503432A (en) | 1998-03-31 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO1996004106A1 (en) | Power screwdriver and process for tightening screws | |
EP0182986B1 (en) | Powered wrench with variable torque adjustment | |
EP2140976B1 (en) | Impact wrench | |
EP0734116B1 (en) | Electrical motor control device and method | |
DE102007000281A1 (en) | Method for controlling a screwdriver | |
DE102009000129A1 (en) | Method for adjusting a power tool | |
EP2140978B1 (en) | Impact wrench | |
EP1785231A2 (en) | Screwdriver featuring rotational speed regulation and method of controlling the rotational speed of a screwdriver | |
DE202015105674U1 (en) | power tool | |
EP2305434B1 (en) | Electric power tool | |
EP1170093B1 (en) | Fastening tool | |
DE10014314B4 (en) | Process and device for hand-held machine tools for optimized processing of various substrates by energy adaptation | |
EP4058246A1 (en) | Method for controlling and regulating a machine tool | |
WO2021094152A1 (en) | Method for controlling and regulating a machine tool and handle for machine tool | |
DE2920065A1 (en) | Hand held power drill with three position mechanical switch - can function as simple drill, hammer drill or screwdriver | |
EP0759340B1 (en) | Impact tool | |
DE102007045695A1 (en) | Hydropneumatic impulse power screwdriver has hydropneumatic drive provided over electro motor with power for generating torsional impulse, where drive shaft is coupled in bolted connection for transferring torsional impulse | |
DE3440920A1 (en) | SPEED CONTROL DEVICE | |
EP0752579B1 (en) | Method for producing a screw connection | |
EP2921263A1 (en) | Load-dependent impact response detection | |
EP0292752A2 (en) | Hydraulically impulsed screwdriver | |
WO2019145156A1 (en) | Method for controlling an impact driver | |
DE19506663C2 (en) | impulse Tools | |
DE10216527A1 (en) | Tool torque limiter has sensor(s) that produces drive torque signal for at least one rotation direction coupled to electronic controller in which at least one shut-off criterion is set for motor | |
DE2612207A1 (en) | Electric tool speed control mechanism - transmits motor torque via spindle to spring loaded gear which operates electronic control unit |
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 |
|
17P | Request for examination filed |
Effective date: 19970303 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE FR GB SE |
|
17Q | First examination report despatched |
Effective date: 19971215 |
|
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 |
|
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): DE FR GB SE |
|
REF | Corresponds to: |
Ref document number: 59507705 Country of ref document: DE Date of ref document: 20000302 |
|
ET | Fr: translation filed | ||
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 20000330 |
|
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 | ||
REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20030528 Year of fee payment: 9 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20030619 Year of fee payment: 9 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SE Payment date: 20030624 Year of fee payment: 9 |
|
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: 20040601 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20040602 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee | ||
EUG | Se: european patent has lapsed | ||
EUG | Se: european patent has lapsed | ||
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: 20050228 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20090825 Year of fee payment: 15 |
|
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: 20110101 |