EP0301222A2 - Pompe d'injection de combustible pour moteurs à combustion interne - Google Patents

Pompe d'injection de combustible pour moteurs à combustion interne Download PDF

Info

Publication number
EP0301222A2
EP0301222A2 EP19880109629 EP88109629A EP0301222A2 EP 0301222 A2 EP0301222 A2 EP 0301222A2 EP 19880109629 EP19880109629 EP 19880109629 EP 88109629 A EP88109629 A EP 88109629A EP 0301222 A2 EP0301222 A2 EP 0301222A2
Authority
EP
European Patent Office
Prior art keywords
fuel injection
slide
pin
adjusting bolt
injection pump
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
Application number
EP19880109629
Other languages
German (de)
English (en)
Other versions
EP0301222B1 (fr
EP0301222A3 (en
Inventor
Wolfgang Eckell
Josef Güntert
Walter Häfele
Manfred Dipl.-Ing. Krämer
Uwe Kuhn
Johann Warga
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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
Priority claimed from DE19873724662 external-priority patent/DE3724662A1/de
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0301222A2 publication Critical patent/EP0301222A2/fr
Publication of EP0301222A3 publication Critical patent/EP0301222A3/de
Application granted granted Critical
Publication of EP0301222B1 publication Critical patent/EP0301222B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/20—Varying fuel delivery in quantity or timing
    • F02M59/24—Varying fuel delivery in quantity or timing with constant-length-stroke pistons having variable effective portion of stroke
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/20—Varying fuel delivery in quantity or timing
    • F02M59/24—Varying fuel delivery in quantity or timing with constant-length-stroke pistons having variable effective portion of stroke
    • F02M59/243—Varying fuel delivery in quantity or timing with constant-length-stroke pistons having variable effective portion of stroke caused by movement of cylinders relative to their pistons
    • F02M59/246—Mechanisms therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston

Definitions

  • the invention relates to a fuel injection pump according to the preamble of the main claim.
  • Fuel injection pumps of this type which are usually designed as multi-cylinder pumps with a number of pump elements, have the problem of the exact assignment of the individual control slides when they are adjusted together by the torsion shaft to change the injection timing or injection quantity. Even slight differences in the adjustment of the individual control slides when actuated by the torsion shaft can lead to considerable errors in the start of spraying or control of the spraying of the fuel, which can lead to uneven running of the internal combustion engine or to deviations from the intended speed.
  • the fuel injection pump according to the invention with the characterizing features of the main claim has the advantage that the sliding shoe axially guided in very narrow tolerances due to the length of the cylindrical pin defined by the position of the head and is axially secured without any restriction of its torsional mobility. This ensures that the line of contact between the slide shoe and the corresponding transverse groove surface is always at the same point, depending on the rotational position of the rotating shaft, so that an exact repeatability of the individual control positions is guaranteed depending on a predetermined rotational position. A better axial guidance also prevents the sliding block from slipping back and forth in the end positions and thus increasing possible errors.
  • the sliding block can be guided on the end face facing away from the head of the adjusting bolt, for example, by a collar present on the adjusting bolt and axially delimiting the cylindrical pin, or by another device axially delimiting the cylindrical pin, such as a fastening part between the adjusting pin and the rotating shaft.
  • the head has at least one lateral flattening, as a result of which a guide surface is obtained.
  • At least one elevation is present on the end face of the sliding block facing the pump piston, which, with the flattening of the head, forms an anti-rotation lock of the sliding block on the cylindrical spigot, which allows a limited backlash.
  • the head has at least one projection that radially exceeds the pin, which is narrower than the pin diameter and wherein the central bore in the slide shoe has a radial expansion, so that the slide shoe can be plugged onto the adjustment bolt via the projection and can be axially secured by twisting through a certain angle on the pin through the now extending projection.
  • the head is preferably tapered on two sides up to an anchor forming the two projections.
  • the sliding shoe has at least one radial flattening which, allowing a limited rotational play, interacts with an elevation of the fastening part which is adjacent to the flattening and has a parallel surface.
  • This causes a limitation of the rotation of the slide shoe, which is very easy to manufacture and reliable.
  • a holding pin is present on the adjusting bolt, opposite the cylindrical pin carrying the sliding shoe, by means of which the adjusting bolt is fastened to the rider and in a fastening hole located there.
  • the adjusting bolt can be designed as a stepped bolt with the cylindrical pin carrying the sliding shoe, and the retaining pin has a smaller diameter and is fastened non-rotatably in the fastening bore, the step being formed between the cylindrical pin and the retaining pin axial length of the cylindrical pin is determined by the part carrying the mounting hole for axially guiding the sliding block.
  • the adjustment bolt can be attached to the rider in at least one of the following three ways.
  • the adjusting bolt can be anchored to the rider by a cross pin penetrating the retaining pin and the rider, or the retaining pin is fastened in the fastening bore by laser beam welding, or the retaining pin is riveted into the fastening bore.
  • Each of these types of fastening is reliable and easy to manufacture.
  • the between cylin The stepped surface formed by the pin and the holding pin serves as a support surface or counter-clamping surface.
  • a washer can be arranged between the step surface and the end face of the sliding shoe.
  • the adjusting bolt in contrast to the sliding shoe, consists of a plastically deformable material (unhardened steel), because on the one hand, due to the close tolerance between the cylindrical pin and the sliding shoe bore, a favorable areal power transmission between There is an adjustment bolt and slide shoe and, on the other hand, there is hardly any wear-causing rotary movement of the slide shoe on the adjustment bolt. Due to the plastically deformable material, the fastening of the adjusting bolt on the fastening part to the rotating shaft is greatly simplified, since a softer material is easier to machine not only when riveting but also when brazing or other fastening. The glide shoe itself is made of hardened material, since the actual sliding movements towards the control slide take place on it, which can result in wear.
  • FIG. 1 shows a vertical cross section through a fuel injection pump on which the invention can be implemented
  • FIG. 2 shows, on an enlarged scale, a section through the first embodiment according to line II-II in FIG. 3
  • FIG. 3 shows a view according to arrow III in FIG 2
  • FIG. 4 the second embodiment in section along line IV-IV in FIG. 5 and FIG. 5 a view according to arrow V in FIG. 4
  • FIG. 6 the third embodiment in side view according to arrow VI in FIG. 7
  • FIG. 7 shows a section along line VII-VII in FIG. 6.
  • a plurality of cylinder liners 2 are embedded in a row in a housing 1, only one of which is visible due to the cut position.
  • a pump piston 3 with the interposition of a roller tappet 4, which has a roller 5, is driven by a camshaft 6 against the pump delivery pressure and the force of a spring 7 for its axial movement forming the working stroke.
  • a suction chamber 8 is created, which is assigned to the pump elements formed from cylinder liners 2 and pump pistons 3.
  • a control slide 9 is axially displaceable in the recesses of the cylinder liners 2.
  • the suction chamber 8 is closed at the longitudinal ends by end shields 11, one of which is shown in plan view and in which a rotating shaft 12 arranged in the suction chamber 8 is mounted.
  • a transverse groove 13 into which an adjusting bolt 14 of a fastening part designed as a rider 15 engages, which is connected to the rotating shaft 12 by screwing.
  • connection bores 16 to the suction chamber 8, one of which is shown.
  • a pressure line (not shown) which ends at an injection nozzle on the engine.
  • the pump piston 3 there is a blind bore 22, which ends at the end face and opens into the pump working chamber 18, and a transverse bore 23, which opens into oblique grooves 24, each of which has a side facing away from one another in the outer surface of the pump piston 3.
  • These oblique grooves 24 end at the bottom in counterbores 20 and interact with radial bores 25 of the control slide 9.
  • control slide 9 So that the control slide 9 is secured against rotation during its axial displacement on the pump piston 3 and an exact assignment of the oblique grooves 24 to the radial bores 25 is ensured, the control slide 9 has a nose 26 with which it engages in a longitudinal groove 27 of the cylinder liner 2 .
  • the pump piston 3 has flats 28 on its lower section, on which a bush 31 known to be rotatable by a control rod 29 engages, so that an axial displacement of the control rod 29 rotates the pump piston 3 and thus changes the assignment of the oblique grooves 24 to the radial bores 25 causes.
  • the fuel supply to the suction chamber 8 takes place via the longitudinal groove 27 from an inflow channel 33 which runs in a pipe 34 arranged in the housing 1 and which has branch openings 35 towards the longitudinal grooves 27.
  • This fuel injection pump works as follows: Towards the end of the suction stroke or in its UT position of the pump piston 3, fuel flows through the oblique grooves 24, the transverse bore 23 and the blind bore 22 and also through the suction bore 32 into the pump work chamber 18 and fills it up. As soon as, after the camshaft 6 has been rotated further, the roller tappet 4 is pushed upwards over the roller 5, the pump piston 3 displaces fuel from the pump work chamber 18. As long as the oblique grooves 24 with the blind holes 20 are completely immersed in the control slide 9, the delivery takes place from the pump work space 18 via the path described back to the suction space 8, initially also one certain amount is displaced back through the suction bore 32.
  • the start of spraying is determined by the axial position of the control slide 9, which in turn is effected by the rotating shaft 12 or the slide 15 with adjusting bolts 14.
  • This start of injection or the end of injection must correspond for the pump elements consisting of a row.
  • the angled rider 15, 115, 215 is clamped to the torsion shaft 12, 112 via a screw bolt 36, between the rider 15, 115 and the rotating shaft 12, 112 a spacer 37 and between the head of the bolt 36 and the rider 15, 115 a washer 38 is arranged.
  • the torsion shaft, the bolt and the washers are not shown.
  • the spacer 37 is selected in the thickness so that the individual adjustment bolts 14 or control slide 9 can be adjusted to one another in their basic position.
  • a mounting hole 39, 139, 239 is arranged on the rider 15, 115, 215, in which the adjusting bolt 14 is fastened with a holding pin 41, 141, 241.
  • the adjustment bolt 14 also has a cylindrical pin 42, 142, 242, on which a slide shoe 43, 143, 243 is mounted and guided on the easily rotatable and with little axial play, this cylindrical pin being held by a head 44, 144, 244 in it Length is limited, which also serves as an axial stop of the slide shoe 43, 143, 243.
  • the sliding shoe 43 is permanently connected to the rider 15.
  • the holding pin 41 here has a smaller diameter than the cylindrical pin 42 on which the slide shoe 43 is mounted.
  • the retaining pin 41 is riveted, a step surface 53 being in direct contact with a corresponding surface 54 of the rider 15. This surface 54 also serves for the axial guidance of the slide shoe 43.
  • the head 44 of the adjusting bolt 14 has two flats 55, the remaining edge 56 of the head, in cooperation with the end face 46 of the sliding block 43, serving as an axial guide for the sliding block 43.
  • strip-shaped elevations 57 are arranged, the inner surfaces of which lie opposite the flats 55 and delimit with them a gap 58, the width of which determines the possible rotation of the slide shoe 43 on the cylindrical pin 42.
  • the rotation should be limited to about + - 5 degrees.
  • the head 144 is flattened laterally up to a remaining bar, so that, however, protrusions 45 projecting beyond the diameter of the cylindrical pin 142 remain, which engage behind the slide shoe 143 on its end face 146 facing the pump piston .
  • a collar 47 which the other end face of the slide shoe 143 faces and against which this end face also bears.
  • two widenings 49 are provided in the central bore 48 of the slide shoe 143, which are somewhat larger than the projections 45, but so small that the radial guidance of the bore 48 on the Pin 142 is not affected.
  • the projections 45 are pushed through the widenings 49, after which the sliding block is 90 degrees on the Pin 142 is rotated so that a type of bayonet connection is created with axial guidance of the sliding block 143, in which the projections 45 interact with the end face 146 of the sliding block 143.
  • a locking pin 52 is inserted into a bore 51 which penetrates the adjusting bolt 14 and the sliding shoe 43, the ends of which are bent in order to prevent the pin 52 from falling out.
  • the holding pin 41 is hard-soldered in the mounting hole 39.
  • the slide shoe 43 can be replaced after removing the locking pin 52 and rotating it by 90 degrees, which can be advantageous if either there is a corresponding wear on the working surface of the slide shoe or if a slide shoe with other radial dimensions is to be used.
  • the adjusting bolt 14 is detachably anchored in the fastening bore 239 of the slide 215.
  • a cross pin 58 is provided, which is arranged in a continuous bore 59, which passes through the holding pin 241 and corresponding sections of the slide 215 for receiving the cross pin 58.
  • a washer 61 is arranged between the step surface 253 of the adjustment bolt 14 and the surface 254 on the slide 215 opposite it, on which the end face of the sliding block 243 is also supported.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
EP88109629A 1987-07-25 1988-06-16 Pompe d'injection de combustible pour moteurs à combustion interne Expired - Lifetime EP0301222B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3724662 1987-07-25
DE19873724662 DE3724662A1 (de) 1987-03-10 1987-07-25 Kraftstoffeinspritzpumpe fuer brennkraftmaschinen

Publications (3)

Publication Number Publication Date
EP0301222A2 true EP0301222A2 (fr) 1989-02-01
EP0301222A3 EP0301222A3 (en) 1990-02-07
EP0301222B1 EP0301222B1 (fr) 1992-05-06

Family

ID=6332346

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88109629A Expired - Lifetime EP0301222B1 (fr) 1987-07-25 1988-06-16 Pompe d'injection de combustible pour moteurs à combustion interne

Country Status (4)

Country Link
US (1) US4840161A (fr)
EP (1) EP0301222B1 (fr)
JP (1) JPS6445959A (fr)
DE (1) DE3870748D1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3811845A1 (de) * 1988-04-08 1989-10-19 Voest Alpine Automotive Pumpeduese fuer dieselmotoren
DE3813320A1 (de) * 1988-04-08 1989-10-19 Voest Alpine Automotive Pumpenduese fuer dieselmotoren
DE4041656A1 (de) * 1990-12-22 1992-07-02 Bosch Gmbh Robert Kraftstoffeinspritzpumpe fuer brennkraftmaschinen
DE4143040C1 (fr) * 1991-12-24 1993-07-08 Robert Bosch Gmbh, 7000 Stuttgart, De
JPH10231763A (ja) * 1997-02-18 1998-09-02 Zexel Corp 燃料噴射ポンプ
DE19734196A1 (de) * 1997-08-07 1999-02-11 Hatz Motoren Regelvorrichtung sowie Verfahren zu deren Herstellung
JP4467469B2 (ja) * 2005-06-08 2010-05-26 ボッシュ株式会社 燃料供給用ポンプ及びタペット構造体
DE102007034036A1 (de) * 2007-07-20 2009-01-22 Robert Bosch Gmbh Kraftstoffhochdruckpumpe mit Rollenstößel

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1526725C3 (de) * 1966-08-01 1973-10-25 L'orange Kg, 7000 Stuttgart Mehrzylinder Kraftstoffeinspntz pumpe
US3712763A (en) * 1970-09-18 1973-01-23 Caterpillar Tractor Co Sleeve metering collar adjusting lever
DE3105738C2 (de) * 1981-02-17 1983-01-20 Daimler-Benz Ag, 7000 Stuttgart Vorrichtung zur Nacheinstellung des Förderbeginns einer Einspritzpumpe für eine Brennkraftmaschine
JPS5888468A (ja) * 1981-11-24 1983-05-26 Nissan Motor Co Ltd 内燃機関の点火装置
US4531492A (en) * 1984-03-27 1985-07-30 Caterpillar Tractor Co. Fuel injection timing and governor control apparatus
US4541391A (en) * 1984-03-27 1985-09-17 Caterpillar Tractor Co. Timing control for fuel injection apparatus
JPS6114743U (ja) * 1984-06-29 1986-01-28 株式会社ボッシュオートモーティブ システム 燃料噴射装置
DE3435987A1 (de) * 1984-10-01 1986-04-10 Robert Bosch Gmbh, 7000 Stuttgart Kraftstoffeinspritzpumpe fuer brennkraftmaschinen
JPS61123756A (ja) * 1984-11-16 1986-06-11 Diesel Kiki Co Ltd 燃料噴射ポンプ
DE3447375A1 (de) * 1984-12-24 1986-07-03 Robert Bosch Gmbh, 7000 Stuttgart Kraftstoffeinspritzpumpe fuer brennkraftmaschinen
DE3447374A1 (de) * 1984-12-24 1986-07-10 Robert Bosch Gmbh, 7000 Stuttgart Kraftstoffeinspritzpumpe fuer brennkraftmaschinen
DE3522451A1 (de) * 1985-06-22 1987-01-02 Bosch Gmbh Robert Kraftstoffeinspritzpumpe fuer brennkraftmaschinen
DE3546222A1 (de) * 1985-12-27 1987-07-02 Bosch Gmbh Robert Kraftstoffeinspritzpumpe fuer brennkraftmaschinen
DE3707646A1 (de) * 1986-03-24 1987-10-08 Bosch Gmbh Robert Kraftstoffeinspritzpumpe fuer brennkraftmaschinen
US4737086A (en) * 1986-05-27 1988-04-12 Diesel Kiki Co., Ltd. Fuel injection pump having variable prestroke mechanism
DE3644147A1 (de) * 1986-12-23 1988-07-07 Bosch Gmbh Robert Kraftstoffeinspritzpumpe fuer brennkraftmaschinen

Also Published As

Publication number Publication date
DE3870748D1 (de) 1992-06-11
EP0301222B1 (fr) 1992-05-06
JPS6445959A (en) 1989-02-20
US4840161A (en) 1989-06-20
EP0301222A3 (en) 1990-02-07

Similar Documents

Publication Publication Date Title
DE3590194C2 (de) Brennstoff-Einspritzpumpe
EP0335083B1 (fr) Dispositif de déplacement angulaire relatif entre deux arbres en liaison d'entraînement
DE4227853C2 (de) Kraftstoffeinspritzpumpe für Brennkraftmaschinen
DE4210143C2 (de) Ventilantrieb für eine Brennkraftmaschine
DE69716381T2 (de) Ventilsteuerungsvorrichtung für eine Brennkraftmaschine
DE4237777C2 (de) Ventilbetätigungseinrichtung
EP0301222B1 (fr) Pompe d'injection de combustible pour moteurs à combustion interne
DE3326973C2 (fr)
EP0185914B1 (fr) Pompe d'injection de carburant pour moteurs à combustion interne
DE3911160C2 (de) Kraftstoffeinspritzpumpe für Brennkraftmaschinen
DE3201011C2 (fr)
EP0207283A2 (fr) Pompe d'injection de combustible pour moteurs à combustion interne
DE3718499C2 (de) Rotationsverteiler-Kraftstoffeinspritzpumpe
EP0313865B1 (fr) Pompe d'injection de combustible pour moteurs à combustion interne
DE3724409A1 (de) Kraftstoffeinspritzpumpe fuer brennkraftmaschinen
EP0262167B1 (fr) Pompe d'injection de carburant pour moteurs a combustion interne
EP0757174A2 (fr) Procédé de changement de l'avance d'une pompe d'injection de carburant et pompe d'injection de carburant
EP0261155B1 (fr) Pompe d'injection de carburant pour moteurs a combustion interne
DE3138640C2 (fr)
DE3724662A1 (de) Kraftstoffeinspritzpumpe fuer brennkraftmaschinen
WO1986005843A1 (fr) Pompe d'injection de carburant
DE4041503C2 (de) Kraftstoffeinspritzpumpe für Brennkraftmaschinen
AT407427B (de) Kraftstoffeinspritzpumpe für brennkraftmaschinen
DE3320981C2 (fr)
EP0172370B1 (fr) Pompe d'injection de combustible pour un moteur à combustion interne

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: A2

Designated state(s): DE FR GB IT

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE FR GB IT

RHK1 Main classification (correction)

Ipc: F02M 59/24

17P Request for examination filed

Effective date: 19900703

17Q First examination report despatched

Effective date: 19910211

RAP3 Party data changed (applicant data changed or rights of an application transferred)

Owner name: ROBERT BOSCH GMBH

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 IT

REF Corresponds to:

Ref document number: 3870748

Country of ref document: DE

Date of ref document: 19920611

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19920629

Year of fee payment: 5

ET Fr: translation filed
ITF It: translation for a ep patent 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: GB

Payment date: 19930604

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: 19930825

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19940228

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19940616

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19940616

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19950301

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: 20050616

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20070523

Year of fee payment: 20

PGRI Patent reinstated in contracting state [announced from national office to epo]

Ref country code: IT

Effective date: 20091201