EP0153810B1 - Outil et procédé pour la fabrication d'articles creux - Google Patents

Outil et procédé pour la fabrication d'articles creux Download PDF

Info

Publication number
EP0153810B1
EP0153810B1 EP85300486A EP85300486A EP0153810B1 EP 0153810 B1 EP0153810 B1 EP 0153810B1 EP 85300486 A EP85300486 A EP 85300486A EP 85300486 A EP85300486 A EP 85300486A EP 0153810 B1 EP0153810 B1 EP 0153810B1
Authority
EP
European Patent Office
Prior art keywords
elements
tool
grooves
portions
article
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
Application number
EP85300486A
Other languages
German (de)
English (en)
Other versions
EP0153810A1 (fr
Inventor
Edward Alfred Langford
Geoffrey Allen Morden
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.)
PFD Ltd
Original Assignee
PFD Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by PFD Ltd filed Critical PFD Ltd
Priority to AT85300486T priority Critical patent/ATE35784T1/de
Publication of EP0153810A1 publication Critical patent/EP0153810A1/fr
Application granted granted Critical
Publication of EP0153810B1 publication Critical patent/EP0153810B1/fr
Expired legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/76—Making machine elements elements not mentioned in one of the preceding groups
    • B21K1/762—Coupling members for conveying mechanical motion, e.g. universal joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
    • B21J5/12—Forming profiles on internal or external surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/76—Making machine elements elements not mentioned in one of the preceding groups
    • B21K1/762—Coupling members for conveying mechanical motion, e.g. universal joints
    • B21K1/765—Outer elements of coupling members

Definitions

  • This invention relates to the manufacture of hollow articles.
  • the invention has been developed for the manufacture of the outer member of a constant velocity universal joint of the cross-groove type.
  • a constant velocity universal joint of the cross-groove type In such a joint, there is an inner member and an outer member, the outer member having an internal cylindrical surface and the inner member an external cylindrical surface which surfaces are grooved and there are two sets of, preferably, helical grooves in each member, the grooves of the two sets being on helices of opposite hand.
  • the grooves may be straight and inclined to the rotational axis of the joint member, instead of being truly helical.
  • Balls are engaged in the grooves and are held in a cage and because of the crossed configuration of the grooves the balls are held in the bisector plane of the joint as the parts of the joint articulate, to give the joint constant velocity ratio (homokinetic) properties.
  • the invention has been developed for making outer members for such cross-groove constant velocity joints it is applicable generally to the manufacture of hollow articles of the type, hereinafter referred to as being of the type specified, having at least two grooves in the internal surface thereof, the grooves having longitudinal axes of symmetry (as hereinafter defined) which differ (as hereinafter defined).
  • the article may have at least two sets of grooves with the grooves in each set being spaced round the longitudinal axis of the bore and having longitudinal axes of symmetry which are the same (as hereinafter defined), the longitudinal axes of symmetry of the grooves in one set being different from the longitudinal axes of symmetry of the grooves in the other set.
  • longitudinal axis of symmetry of a groove we mean the imaginary line which is equally spaced from the edges of the groove and which lies in an imaginary surface forming a continuation of the bore surface and containing said edges.
  • the longitudinal axes of symmetry are the same we mean that the loci of points moving in synchronism from the one ends of said axes to the other bear a fixed relation to one another.
  • the longitudinal axes of symmetry differ we mean that the loci of such moving points do not lie in a fixed relation to one another.
  • the axes could be on helices of different hand, or of the same hand and different pitch or on helices of different pitch and hand. Some of the axes could be straight and others could be helical.
  • a tool for use in manufacture of an outer member of a constant velocity ratio universal joint comprising a number of first and second elements which together define the shape required in the interior of the joint member, and an internal cavity into which an expander fits to hold the elements in their operative positions. After removal of the expander from the cavity, the first elements can be moved radially inwardly and withdrawn from the joint member, after which the second elements can in turn be withdrawn.
  • Such a tool is not applied to making an article with sets of grooves therein, the grooves in each set having longitudinal axes of symmetry which are the same as one another while the axes of symmetry of the grooves in one set are different from those of the grooves in the other set.
  • the present invention provides a tool for use in manufacture of a hollow article, said tool comprising a plurality of elements having portions which are together adapted to define a substantially complete external surface having a configuration corresponding to that required in the internal surface of the article and an internal cavity into which an expander member is movable to hold said elements in positions in which they define said external surface, said elements comprising first elements and second elements interposed between them, and the arrangement being such that the expander member can be withdrawn from said cavity to permit said first elements of the tool to be moved inwardly into said cavity and said portions thereof withdrawn from said article to leave a space or spaces to permit said portions of said second elements subsequently to be moved inwardly into said space(s) to disengage them from said internal surface, and withdrawn from said article, characterised in that the tool is adapted to make an article having at least two sets of grooves in said internal surface thereof said sets of grooves having longitudinal axes of symmetry which differ such that the loci of points moving in synchronism from one end of said axes to the other do
  • a substantially complete surface we mean one in which there are no gaps or discontinuities sufficient for the material of the article to enter during the forming process, and which material would have to be removed subsequently, e.g. by machining.
  • the requirement for finish machining of the article can be reduced or eliminated.
  • each of said portions of said first elements has a formation adapted to form one of said grooves of one set thereof, and each portion of a second element has a formation adapated to form one of said grooves of another set thereof which differs from said one set.
  • the second elements may be supported by the side faces of the first elements, rather than directly by the expander member.
  • Figures 1 and 2 show the outer member of a cross groove constant velocity ratio universal joint, which is a hollow article with a cylindrical internal bore having a number of grooves therein.
  • the central axis of the cylindrical bore which is the rotational axis of the joint member in use, is indicated at 100.
  • the joint member contains two sets of three grooves each, the grooves being of arcuate cross sectional shape and having helical longitudinal axes of symmetry.
  • One set of grooves is indicated at 57, 58, 59 and these grooves are inclined in an anticlockwise helical sense when considered from above the joint member.
  • the other set of grooves 60, 61, 62 are inclined in a clockwise helical sense when considered from above the joint member.
  • each of the grooves is indicated by the number of the groove with the suffix letter a, such axis of symmetry lying equidistant from the edges of the groove and on the imaginary cylinder indicated by line 101, the cylinder containing the bore of the joint member.
  • the grooves are machined in a blank which has been forged or extruded. Because the grooves are inclined in opposite hands, if they were formed by a one piece tool during extrusion of the article the tool would not be able to be removed from the finished article.
  • the present invention provides a tool which is capable of being removed from such a joint outer member.
  • FIG. 3 and 4 of the drawings there is shown a configuration of blank which may with advantage be used with the tool to be described hereafter. It is cup shaped, with its internal and external walls diverging towards its free open end.
  • the internal wall 70 is of generally frusto conical form, with two sets of oppositely inclined recesses therein. One set of recesses is indicated at 71, 72, 73, inclined in one direction, and the other set at 74, 75, 76 inclined in the opposite direction.
  • These recesses which are to form the grooves in the finished joint outer member, are of a configuration such that a one-piece forming tool can be withdrawn axially from the blank after the blank has been formed. Forming the blank to the finished joint outer member is achieved by inserting the tool to be described hereafter into the blank and forcing the blank through a die so as to deform the side wall of the blank inwardly as indicated by arrows 80 in Figure 4.
  • a ram 20 of a press to which is secured, by a screw-threaded connection ring 21, a mandrel 22.
  • the lower end of mandrel 22 has secured to it an elongate cylindrical expander member 23.
  • a sleeve 24 is slidable longitudinally of mandrel 22, between limits determined by a peg 25 extending inwardly from sleeve 24 into a longitudinally extending slot 26 in mandrel 22.
  • the collar 28 is spring biased upwardly by a plurality of tension springs 29 spaced around the collar, only one of which springs is shown in the drawing.
  • the springs 29 engage pins 30 extending into the mandrel 22.
  • the sleeve 24 is provided with three equally circumferentially spaced radial apertures 31.
  • Each aperture 31 receives a ball end of a peg 32 extending outwardly from the upper end of an element 33 having a head 34 at its lower end.
  • Circumferentially spaced about sleeve 24, between the apertures 31, are three slots 35 which extend downwardly from flange 27.
  • Each slot 35 receives a peg 36 extending outwardly from the upper end of an element 37 having a head 38 at its lower end.
  • the pegs 36 are long enough to be engaged by collar 28.
  • the head portions 34, of elements 33, together define parts of an internal cavity 40 which is frusto conical and in which an end portion of the expander member 23 is a close fit.
  • head portions 34, 38 of elements 33, 37 are shown in greater detail in Figures 8 and 9 of the drawings.
  • Head portions 34 have formations 34a thereon which form the grooves of one hand, and head portions 38 have formations 38a which form the grooves of opposite hand in the joint member.
  • head portions 34 have sides which are parallel or converge slightly towards the outside of the tool, while head portions 38 interposed there between are wedge shaped and are supported by the sides of head portions 34 rather than directly by contact with the end portion of the expander member.
  • the assembly of elements 33, 37, with the expander member 23 therein is introduced into a blank as shown in Figures 3 and 4.
  • the press is then used to force the blank with the tool within it into a die 41. This has the effect of deforming inwardly the wall of the blank adjacent its free end, to conform to the surface shape of the assembled tool elements.
  • the elements 33 are now free to tilt inwardly. This tilting is possible by virtue of the ball ends of pegs 32 engaging in apertures 31. Such tilting permits the head portions to be withdrawn from the joint outer member, with continued upward movement of mandrel 22. Head portions 38 of elements 37 remain in contact with the joint outer member, supported by elements 33.
  • the apparatus is used for the manufacture of the outer member of a constant velocity ratio universal joint, it will be appreciated that it is suitable for manufacture of other components of the same general configuration, having an internal surface with grooves of different hand therein. There may be other numbers of elements such as elements 33, 37, according to the shape of the component to be manufactured.
  • the tool assembly is mounted on the ram of the press and the die is fixed on the base of the press, it would be possible for the die rather than the tool assembly to be moved by the press ram. The relative movements occuring between the parts of the tool assembly and the die would be the same.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Dry Shavers And Clippers (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)

Claims (7)

1. Outil destiné à la fabrication d'un objet creux, l'outil comprenant plusieurs éléments (33, 37) ayant des parties (34, 38) qui sont destinées à délimiter ensemble une surface externe pratiquement complète ayant une configuration correspondant à celle que doit avoir la surface interne de l'objet et une cavité interne (40) dans laquelle un organe (23) d'écartement est mobile afin qu'il maintienne les éléments (33,37) en position dans laquelle ils délimitent la surface externe, les éléments comprenant des premiers éléments (33) et des seconds éléments (37) placés entre eux, l'arrangement étant tel que l'organe d'écartement (23) peut être retiré de la cavité afin qu'il permette aux premiers éléments (33) de l'outil de se déplacer vers l'intérieur, dans la cavité, et le retrait desdites parties (34) de l'élément de l'objet afin qu'il reste un ou plusieurs espaces destinés à permettre auxdites parties des seconds éléments (37) de se déplacer ensuite vers l'intérieur dans l'espace ou les espaces et de se séparer de la surface interne et d'être retirées de l'outil, caractérisé en ce que l'outil est destiné à la fabrication d'un objet ayant au moins deux jeux de gorges à sa surface interne, les jeux de gorges ayant des axes longitudinaux de symétrie qui diffèrent de manière que les lieux des points se déplaçant en synchronisme d'une extrémité des axes à l'autre ne présentent pas une disposition relative mutuelle déterminée, alors que les gorges de l'autre jeu ont des axes de symétrie qui sont les mêmes afin que les lieux des points mobiles aient une relation fixe mutuellement, lesdites parties (34, 38) des éléments ayant des saillies (34a, 38a) qui correspondent aux gorges et sont destinées à la formation de celles-ci.
2. Outil selon la revendication 1, caractérisé en outre en ce que des faces latérales desdites parties (34) au moins des premiers éléments (33) qui sont au contact desdites parties (38) au moins des seconds éléments (37) sont parallèles mutuellement ou convergent vers l'extérieur de l'outil.
3. Outil selon la revendication 2, caractérisé en outre en ce que les seconds éléments (37) sont supportés, pendant l'utilisation, par les faces latérales des premiers éléments (33) et non par l'organe d'écartement (23).
4. Outil selon l'une des revendications 2 et 3, caractérisé en outre en ce que chacune desdites parties (34) des premiers éléments (33) a une saillie (37a) destinée à former l'une des gorges d'un premier jeu, et chacune desdites parties (38) des seconds éléments (37) a une saillie (38a) destinée à former l'une des gorges d'un autre jeu.
5. Outil selon l'une quelconque des revendications 2, 3 et 4, caractérisé en outre en ce que l'organe d'écartement (23) a une partie tronconique qui pénètre dans la cavité interne (40) délimitée par les éléments (33, 34, 37, 38) de l'outil afin que le retrait de l'organe d'écartement soit facilité après une opération de mise en forme.
6. Outil selon l'une quelconque des revendications 2 à 5, caractérisé en outre par un organe (24) de maintien des premiers éléments (33) afin qu'il puisse se déplacer vers l'intérieur, l'organe de maintien (24) étant monté afin qu'il puisse se déplacer par rapport à l'organe d'écartement (23), un dispositif (25, 26) de butée coopérant avec l'organe de maintien (24) lorsque l'organe d'écartement (23) est retiré de la cavité (40) afin que les premiers éléments (33) soient retirés de l'objet, et des dispositifs supplémentaires de butée (35, 36) coopérant avec les seconds éléments (37) après retrait supplémentaire de l'organe d'écartement (23) afin que les seconds éléments (37) soient retirés de l'objet.
7. Outil selon la revendication 6, caractérisé en outre par un dispositif à ressorts (29) agissant entre l'organe d'écartement (23) et les premiers et seconds éléments (33, 37) afin qu'il ramène les éléments vers leurs positions de travail et l'organe d'écartement vers la cavité.
EP85300486A 1984-02-18 1985-01-24 Outil et procédé pour la fabrication d'articles creux Expired EP0153810B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85300486T ATE35784T1 (de) 1984-02-18 1985-01-24 Werkzeug und verfahren zur herstellung hohler gegenstaende.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8404321 1984-02-18
GB848404321A GB8404321D0 (en) 1984-02-18 1984-02-18 Tool

Publications (2)

Publication Number Publication Date
EP0153810A1 EP0153810A1 (fr) 1985-09-04
EP0153810B1 true EP0153810B1 (fr) 1988-07-20

Family

ID=10556820

Family Applications (2)

Application Number Title Priority Date Filing Date
EP85900708A Pending EP0201499A1 (fr) 1984-02-18 1985-01-24 Outil et procede pour fabriquer des articles creux
EP85300486A Expired EP0153810B1 (fr) 1984-02-18 1985-01-24 Outil et procédé pour la fabrication d'articles creux

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP85900708A Pending EP0201499A1 (fr) 1984-02-18 1985-01-24 Outil et procede pour fabriquer des articles creux

Country Status (12)

Country Link
EP (2) EP0201499A1 (fr)
JP (1) JPS61501831A (fr)
AT (1) ATE35784T1 (fr)
AU (1) AU583260B2 (fr)
BR (1) BR8507121A (fr)
CA (1) CA1272371A (fr)
DE (1) DE3563821D1 (fr)
ES (1) ES540499A0 (fr)
GB (2) GB8404321D0 (fr)
MX (1) MX162499A (fr)
WO (1) WO1985003655A1 (fr)
ZA (1) ZA85834B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4138126A1 (de) * 1991-11-19 1993-05-27 Fraunhofer Ges Forschung Werkzeug zur spanlosen herstellung von aussen- oder innenkonturen an werkstuecken

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8520641D0 (en) * 1985-08-17 1985-09-25 Pfd Ltd Tool
DE3712301C2 (de) * 1987-04-10 1994-04-28 Loehr & Bromkamp Gmbh Preßwerkzeug
JPH01104441A (ja) * 1987-07-03 1989-04-21 Aida Eng Ltd 等速ジョイント及びその類似物の製造装置
DE3933292A1 (de) * 1989-10-05 1991-04-11 Schoeneweiss & Co Gmbh Spreizwerkzeug fuer eine formungseinrichtung
DE3933293A1 (de) * 1989-10-05 1991-04-11 Schoeneweiss & Co Gmbh Spreizwerkzeug
DE19832503A1 (de) * 1998-07-20 2000-01-27 Schaeffler Waelzlager Ohg Verfahren zum Herstellen eines rotationssymmetrischen Formteils und zugehöriges Werkzeug
US7347077B2 (en) 2003-11-27 2008-03-25 Honda Motor Co., Ltd. Method of manufacturing outer ring member for constant velocity joint
JP4319015B2 (ja) * 2003-11-27 2009-08-26 本田技研工業株式会社 等速ジョイント用外輪部材の製造方法
CN106111863A (zh) * 2016-07-11 2016-11-16 上海纳铁福传动系统有限公司 一种锻件的加工方法及其锻造模具

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2830275C3 (de) * 1978-07-10 1984-02-09 Volkswagenwerk Ag, 3180 Wolfsburg Preßwerkzeug zur Herstellung einer Innenkontur eines vorgeformten Werkstücks
AT358365B (de) * 1978-11-29 1980-09-10 Ver Edelstahlwerke Ag Schmiedegesenk
US4262518A (en) * 1979-07-16 1981-04-21 Caterpillar Tractor Co. Tube expander and method
DE3004024C2 (de) * 1980-02-05 1985-08-01 Liebergeld, Rudolf, Dipl.-Ing., 8500 Nürnberg Werkzeug zum Herstellen eines Gelenkkörpers
JPS571685A (en) * 1980-05-28 1982-01-06 Tokyo Shibaura Electric Co Turning gear holding article
JPS57181737A (en) * 1981-04-28 1982-11-09 Aida Eng Ltd Manufacturing device of parts with opening of reduced smaller diameter than inner part extending over whole circumference
FR2526687B1 (fr) * 1982-05-13 1985-08-30 Luchaire Sa Outil de formage et de calibrage notamment pour bols de fusees de joints homocinetiques
ZA837328B (en) * 1982-10-14 1984-05-30 Pfd Ltd Manufacture of article having undercut internal surface
ZA837329B (en) * 1982-10-14 1984-05-30 Pfd Ltd Tool for and method of making hollow articles

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4138126A1 (de) * 1991-11-19 1993-05-27 Fraunhofer Ges Forschung Werkzeug zur spanlosen herstellung von aussen- oder innenkonturen an werkstuecken

Also Published As

Publication number Publication date
BR8507121A (pt) 1987-07-14
ZA85834B (en) 1985-09-25
DE3563821D1 (en) 1988-08-25
GB2183187A (en) 1987-06-03
CA1272371A (fr) 1990-08-07
ES8603308A1 (es) 1985-12-16
ES540499A0 (es) 1985-12-16
WO1985003655A1 (fr) 1985-08-29
JPS61501831A (ja) 1986-08-28
GB8618146D0 (en) 1986-09-03
AU3887985A (en) 1985-09-10
EP0153810A1 (fr) 1985-09-04
EP0201499A1 (fr) 1986-11-20
AU583260B2 (en) 1989-04-27
MX162499A (es) 1991-05-13
GB8404321D0 (en) 1984-03-21
GB2183187B (en) 1988-06-15
ATE35784T1 (de) 1988-08-15

Similar Documents

Publication Publication Date Title
EP0153810B1 (fr) Outil et procédé pour la fabrication d'articles creux
EP0121531B1 (fr) Outil et procede de fabrication d'articles creux
EP2000688B1 (fr) Procédé de production d'un anneau intérieur forgé pour un joint universel à vitesse constante et son dispositif de fabrication
EP0049474B1 (fr) Matrice de forgeage à fabriquer une piéce munie de rainures intérieures rétrécies
EP0270538B1 (fr) Outil et procede de fabrication d'articles creux
JPS61278467A (ja) 弁スリ−ブおよびその製造方法
EP0122921B1 (fr) Fabrication d'articles ayant une surface interne a depouille
US4428220A (en) Method and tool for the cold forging of internally profiled tubes
JPH0341249B2 (fr)
US5732586A (en) Cold extrusion for helical gear teeth
EP0722372B1 (fr) Appareil de formation par forgeage d'une bague exterieure pour joint homocinetique et procede associe
EP0137580B1 (fr) Procédé et dispositif d'étirage de douilles à paroi épaisse et à surface intérieure poly-étagée
US5660593A (en) Outer joint part produced as a formed plate metal part
GB2129354A (en) Manufacture of article having undercut internal surface
EP0084713B1 (fr) Butée de sertissage
JPH0718452Y2 (ja) 等速ジヨイントの外輪加工用パンチ
JP2001219231A (ja) 成形装置

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

Designated state(s): IT

17P Request for examination filed

Effective date: 19860222

17Q First examination report despatched

Effective date: 19870512

RBV Designated contracting states (corrected)

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

XX Miscellaneous (additional remarks)

Free format text: VERBUNDEN MIT 85900708.0/0201499 (EUROPAEISCHE ANMELDENUMMER/VEROEFFENTLICHUNGSNUMMER) DURCH ENTSCHEIDUNG VOM 28.08.87.

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 FR GB IT LI LU NL SE

REF Corresponds to:

Ref document number: 35784

Country of ref document: AT

Date of ref document: 19880815

Kind code of ref document: T

XX Miscellaneous (additional remarks)

Free format text: VERBUNDEN MIT 85900708.0/0201499 (EUROPAEISCHE ANMELDENUMMER/VEROEFFENTLICHUNGSNUMMER) DURCH ENTSCHEIDUNG VOM 28.08.87.

ITF It: translation for a ep patent filed
REF Corresponds to:

Ref document number: 3563821

Country of ref document: DE

Date of ref document: 19880825

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: AT

Payment date: 19910111

Year of fee payment: 7

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

Ref country code: SE

Payment date: 19910117

Year of fee payment: 7

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

Ref country code: LU

Payment date: 19910128

Year of fee payment: 7

ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19910131

Year of fee payment: 7

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

Ref country code: BE

Payment date: 19910207

Year of fee payment: 7

EPTA Lu: last paid annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19920124

Ref country code: AT

Effective date: 19920124

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

Ref country code: SE

Effective date: 19920125

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

Ref country code: BE

Effective date: 19920131

BERE Be: lapsed

Owner name: PFD LTD

Effective date: 19920131

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

Ref country code: NL

Effective date: 19920801

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
EUG Se: european patent has lapsed

Ref document number: 85300486.9

Effective date: 19920806

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: FR

Payment date: 20030110

Year of fee payment: 19

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

Ref country code: GB

Payment date: 20030122

Year of fee payment: 19

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

Ref country code: CH

Payment date: 20030130

Year of fee payment: 19

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

Ref country code: DE

Payment date: 20030206

Year of fee payment: 19

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: 20040124

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: 20040131

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040131

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: 20040803

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

Effective date: 20040124

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: 20040930

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST