EP0187582B1 - Pressscheibe zum Strangpressen von Metall - Google Patents

Pressscheibe zum Strangpressen von Metall Download PDF

Info

Publication number
EP0187582B1
EP0187582B1 EP85402437A EP85402437A EP0187582B1 EP 0187582 B1 EP0187582 B1 EP 0187582B1 EP 85402437 A EP85402437 A EP 85402437A EP 85402437 A EP85402437 A EP 85402437A EP 0187582 B1 EP0187582 B1 EP 0187582B1
Authority
EP
European Patent Office
Prior art keywords
face
recess
billet
advancing
cylindrical
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
EP85402437A
Other languages
English (en)
French (fr)
Other versions
EP0187582A1 (de
Inventor
Guy Bessey
Jean-Pierre Angeli
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.)
Clecim SAS
Original Assignee
Clecim SAS
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=9310406&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0187582(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Clecim SAS filed Critical Clecim SAS
Priority to AT85402437T priority Critical patent/ATE43519T1/de
Publication of EP0187582A1 publication Critical patent/EP0187582A1/de
Application granted granted Critical
Publication of EP0187582B1 publication Critical patent/EP0187582B1/de
Expired legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C26/00—Rams or plungers; Discs therefor

Definitions

  • the subject of the invention is a metal thrust grain in a spinning press comprising a container in which is formed a cylindrical housing centered on a spinning axis and in which can be placed a billet of metal to be spun and a pushing ram of the billet against a die closing the housing, the gland being constituted by a rod centered on the spinning axis, capable of penetrating into the housing under the action of thrust means, parallel to the axis, and provided, at its end facing the billet, a thrust grain consisting of a cylindrical hollow disc, of outside diameter slightly smaller than that of the housing and having a transverse thrust face on the billet in which is formed a concave recess comprising a flat bottom transverse to the spinning axis and a frustoconical spacer face centered on the axis and opening towards the billet, said recess being occupied by a spacer wedge comprising one of frustoconical face of the same conicity as the frustoconical spacing face of the recess and cooperating with
  • This thrust grain can be used for a spinning press for non-ferrous metallic materials, in particular aluminum.
  • a press for spinning non-ferrous metals generally comprises a container provided with a cylindrical housing in which is placed a billet, that is to say a section of bar constituting the metal to be spun.
  • a billet that is to say a section of bar constituting the metal to be spun.
  • One of the ends of the housing is closed by a bottom carrying a die centered on the axis of the housing and against which the billet is pushed with strong pressure to form by extrusion a profile whose cross section corresponds to that of the die.
  • the spinning pressure is exerted by a pushing ram consisting of a rod centered on the spinning axis and moving parallel to the axis under the action of pushing means, penetrating into the housing to extrude the metal by the sector.
  • the rod constituting the gland is fixed on a movable cross member mounted to slide parallel to the spinning axis and actuated by a main jack which is supported on a fixed cylinder head, the container itself bearing on a fixed bed base placed on the other side of the press and on which is mounted a tool holder assembly carrying a die centered on the spinning axis and forming the container housing, on the side opposite the gland.
  • the gland is mounted on the fixed tool holder and carries the die at its end.
  • the container is then pushed by the movable cross member towards the gland on which it is threaded by forcing the metal of the billet to pass through the die placed at the end of the gland, the latter being provided with an axial bore for the passage of the extruded profile.
  • the invention applies more particularly to direct spinning presses in which the container is fixed and as well as the die placed at one end of the housing in which the gland , actuated by the movable cross member, penetrates from the other end.
  • the stem of the gland is provided at its end turned towards the billet, with a thrust grain made up of a metal part in the form of a cylindrical disc whose outside diameter is slightly less than that of the housing so as to facilitate loading. grain in the container.
  • a thrust grain made up of a metal part in the form of a cylindrical disc whose outside diameter is slightly less than that of the housing so as to facilitate loading. grain in the container.
  • the clearance left between the grain and the housing allows the formation of a metal film along the internal wall of the housing during the advancement of the gland and the grain.
  • an attempt is made to reduce the thickness of the metal film, but this must however have a minimum value so as to avoid steel-to-steel contact of the side wall of the grain against the internal wall of the housing.
  • This reduction in play is generally ensured by virtue of the transverse deformation of the grain which is crushed under the spinning pressure.
  • this crushing must be calculated so that, in service, there remains a minimum clearance between the grain and the internal wall of the housing for the formation of the protective film
  • the extruded profile remains fixed on a metal base which remains between the thrust face of the grain and the bottom of the container carrying the die.
  • the profile is sheared so as to separate it from the base but the grain remains wedged between the base and the aluminum film which remains inside the housing and it is no longer possible to return it back through the container without scrape the internal wall of the housing, removing the film and risking scratching the housing.
  • it is generally preferred to separate the grain from the gland and remove it with the base on the side opposite to that of the gland. The grain must then be cleaned and then replaced at the end of the gland for a new spinning operation.
  • the grain is generally fixed at the end of a bar which crosses the gland and which is provided with a threaded end engaging in an internally threaded bore formed on the rear face of the grain, this bar being immobilized in rotation to allow mounting and dismounting of the grain from the front of the gland.
  • the outer part of the grain is constituted by a cylindrical hollow disc whose outer diameter is less than that of the clearance of the play necessary for the removal of the grain after spinning.
  • a concave recess in which is placed a wedge-shaped part allowing to flare the side wall of the recess.
  • it is provided with a frustoconical spacer face centered on the axis and opening on the side of the billet.
  • the spacer has a frustoconical face of the same conicity as the spacer face of the recess and cooperating with the latter to cause the expansion of the side wall of the recess during spinning.
  • the thrust force is then essentially supported by the transverse face of the corner facing the billet, the hollow disc resting on the billet only by an annular face surrounding the corner (SU-A-170 905).
  • the housing protection film In order for the housing protection film to keep a minimum thickness, it is necessary to limit the expansion of the grain when it has taken the desired diameter.
  • the spacer wedge can be provided, on the side opposite to the billet, with a circular face transverse to the axis and which comes to rest on a flat face formed at the bottom of the recess, both transverse support faces being separated by a clearance which allows a depression of the corner limited to the value necessary to obtain the desired increase in diameter.
  • the bottom of the recess must be connected to its side wall by a rounded face, which increases the thickness of the side wall at the base of the recess and, above all, decreases the section of the flat face constituting the bottom of the recess, and which is already reduced by the passage of a corner fixing rod on the gland, as well as that of the face corner support (SU-A-170 905).
  • a corner fixing rod on the gland as well as that of the face corner support (SU-A-170 905).
  • the subject of the invention is a new arrangement which makes it possible on the one hand to limit the crushing of the grain and on the other hand to better control its increase in diameter and consequently the thickness of the protective film.
  • the hollow disc forming the outer part of the grain consists of two separate parts, respectively a front part in the form of a cylindrical sleeve whose internal face constitutes the side wall of the recess and a rear part forming a part.
  • a transverse face constituting the bottom of the recess inside the sleeve and having a circular section of diameter substantially equal to that of the small base of the frustoconical spacer face of the corner placed at the front of the internal face of the sleeve, the expansion force being supported only by said cylindrical sleeve and the compression force by said rear part for fixing the hollow disc .
  • the internal face of the cylindrical sleeve comprises, in the extension of the frustoconical spacing face, a cylindrical face centered on the spinning axis and which is connected at a sharp angle, towards the front to the small base. from the frustoconical face and towards the rear on the circular edge of the bottom of the recess.
  • the frustoconical spacing face of the corner is extended towards the inside of the recess by a substantially cylindrical lateral face, spaced from the internal face of the recess by a slight play and connecting at a sharp angle, towards the 'front, at the small base of the frustoconical spacing face and, towards the rear, at the circular edge of the transverse bearing face of the corner.
  • the cylindrical sleeve is fitted without play on a cylindrical part projecting from the front of the grain fixing part and the front end of which constitutes the bottom of the recess.
  • the fixing part is traversed, on its peripheral part outside the projecting part, by a plurality of bores parallel to the axis in which pass screws whose threaded ends engage in bores corresponding, internally threaded from the cylindrical sleeve.
  • the grain fixing part is made of a metal hard enough to resist crushing and the cylindrical sleeve is made of a less hard and more elastic metal to facilitate its expansion.
  • Figure 1 schematically shows, in axial section, a spinning press follower provided with a thrust grain according to the invention.
  • Figure 2 is a detail view in axial section, showing the grain of thrust on an enlarged scale.
  • FIG 1 there is shown only the gland 1 of a spinning press, fixed on a movable cross member 11, actuated by a thrust cylinder not shown.
  • the gland 1 enters the interior of a housing 2 formed in a container 21 which bears on the bed base 22 by means of the die 23 centered on the axis 10 of the housing 2 and closing the latter.
  • the general arrangement of a spinning press has been known for a long time and does not require a detailed description.
  • the gland 1 consists of a rod 12 fixed by a base 13 on the movable cross member 11 and at the other end of which is placed a thrust grain 3. During spinning, it penetrates inside the housing 2 of the container 21 and pushes a billet 4 of metal to be spun against a die 23 mounted in a fixed tool holder assembly 24 closing the end of the housing 2 opposite the gland.
  • the arrangements according to the invention are specially provided for the use of a harnessed grain.
  • the grain 3 is fixed to the end of a rod 14 which passes through the gland 1 in the axis thereof and whose, for example, the threaded end 15 can engage on a bore 31 internally threaded and formed on the rear face 32 of the grain 3 facing the gland.
  • the face 33 of the grain 3 facing the billet 4 is provided with a concave recess 35 in which is housed a spacer corner 5.
  • This corner 5 is provided, on the side of the billet, with a flat front face 51 and fixed, on the side of the gland, on the rear part 3, by a rod 52 centered on the axis 10 and passing through the front end of the part 3 to open into the bottom of the bore 31.
  • the rod 52 is provided with a threaded end on which a nut 53 is screwed making it possible to fix the wedge 5 on the hollow disc 3 while leaving a clearance necessary for the depression of the wedge.
  • the hollow disc 3 consists of two separate parts, respectively a cylindrical sleeve 6 and a rear fixing part 3.
  • the sleeve 6 is formed of a tubular wall whose thickness and length "L" are determined according to the nature of the metal so that the lip formed by the sleeve 6 around the corner 5 can undergo the necessary diameter variations without excessive fatigue.
  • the lip 6 is limited towards the outside by a substantially cylindrical side wall 61 which forms the external face of the grain and which, according to a known arrangement, can flare very slightly forward, on the side of the billet, so to rely on the protective film by a front portion 62 of reduced length.
  • the internal face of the sleeve 6 is constituted, towards the front by the frustoconical face 63 on which the frustoconical spacing face 54 of the corner 5 rests and towards the rear, by a cylindrical face 64 centered on the axis 10 and of diameter equal to that of the small base 66 of the frustoconical face 63.
  • the fixing part 30 constituting the grain body has, for the most part, an outside diameter equal to that of the lateral face 61 of the sleeve 6. However, it is provided towards the front with a projecting part 7 limited by a transverse face 71 perpendicular to the axis and, laterally, by a cylindrical face centered on the axis 10 and of diameter equal to that of the cylindrical internal face 64 of the sleeve 6. The latter can therefore fit without play on the projecting part 7, the length sufficient to allow the socket to be held.
  • the recess 35 is made up of two parts, a frustoconical front part and a rear part of rectangular section, bounded laterally by the face 64 of the socket 6 which is connected at a sharp angle to the circular edge 73 of the end 71 of the projecting part 7 constituting the bottom of the recess 35.
  • the corner 5 comprises a frustoconical front part limited by the spacer face 54 and a rear part of rectangular section limited by a substantially cylindrical side face 55 and by a transverse face 56 which constitutes the bearing face of the corner on the bottom 71 of the recess.
  • the cylindrical lateral face 55 of the wedge is spaced from the cylindrical face 54 of the bush 6 by a clearance that is simply sufficient to allow the displacement of the wedge without other friction than that of the frustoconical faces 54 and 63 one on the other.
  • the lateral face 55 of the corner is connected at a sharp angle towards the front to the small base 57 of the frustoconical face 54 and towards the rear to the circular edge 58 of the bearing face 56.
  • the bottom 71 of the recess therefore has the maximum possible diameter compatible with the thickness that must be given to the socket 6 and the bearing face 56 of the corner also has the maximum possible diameter, slightly less than the diameter of the bottom 71 of the recess 35, the difference corresponding simply to the clearance (a) which must exist between the cylindrical faces 55 and 64. Therefore, for the same external dimension of the grain, the bearing surface of the corner on the bottom of the recess can be increased by around 130% compared to the previous arrangement, which allows a reduction in the stress rate 30% for an identical thrust effort.
  • the expansion force is supported only by the sleeve 6 and the compression force by the projecting part 7 of the rear part 30, these two parts can be made of metals whose composition and heat treatment are specially adapted to the effort collected.
  • the fixing part 30 will be made of a metal hard enough to resist crushing while the cylindrical sleeve will be made, on the contrary, of a less hard and more elastic metal so as to better deform by expansion. There would be less risk, in this way, of deteriorating the internal wall of the housing 2 in case it comes into contact with the grain.
  • the deformation of the bush 6 can be calculated with precision as a function of the thrust force.
  • We can, in particular, determine the inclination of the frustoconical walls 54 and 63 and the clearance between the transverse bearing faces 56 and 71 so that the sleeve 6 takes the desired diameter from the start of the spinning, all of the 'thrust force that can be collected by the fixing piece 30 thanks to the increase in the support surface.
  • the grain 3 must be removed from the housing 2 with the gland.
  • the sleeve 6 is kept fitted on the projecting part 7 by the conical face 54 of the corner, but this holding may not be sufficient to avoid displacement of the sleeve. This is why a certain number of bores 36 parallel to the axis 10 and in which pass with play of bolts 37 whose heads rest on will be provided on the peripheral part of the fixing piece 30 external to the cylindrical wall 72 on counterbores formed on the fixing part 3 and whose threaded ends mesh in corresponding bores 65 internally threaded and formed on the rear face 67 of the socket 6.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
  • Extrusion Of Metal (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)

Claims (7)

1. Preßscheibe für Metall in einer Strangpresse mit einem Behälter (21), in welchem ein zylindrischer Raum (2) angeordnet ist, der auf einer Strangpreßachse (10) zentriert ist und in dem ein Preßblock (4) von strangzupressendem Metall angeordnet sein kann sowie ein Preßstempel für den Block (4) gegen eine Matrize (23), welches den Raum (2) schließt, wobei der Stempel (1) aus einer Stange (12) gebildet ist, die auf der Strangpreßachse (10) zentriert ist, geeignet ist, in den Raum (2) unter der Wirkung von Preßmitteln (11) parallel zu der Achse einzutreten, und an ihrem dem Block (4) zugewandten Ende mit einer Preßscheibe versehen ist, die aus einer zylindrischen hohlen Scheibe mit einem Außendurchmesser gebildet ist, der etwas kleiner als der des Raumes ist, und eine querliegende Preßfläche (33) am Block aufweist, in welcher eine konkave Aussparung (35) angeordnet ist, die einen ebenen Boden (71) quer zur Strangpreßachse (10) und eine kegelstumpfförmige Abstandsfläche (63) aufweist, die auf der Achse (10) zentriert ist und sich zum Block (4) öffnet, wobei die Aussparung (35) durch einen Abstandskeil (5) besetzt ist, der eine kegelstumpfförmige Fläche (54) derselben Konizität aufweist wie die kegelstumpfförmige Abstandsfläche der Aussparung und mit letzterer zusammenarbeitet, und eine Kreisfläche (56) quer zur Achse unter Abstützung auf dem Boden (71) der Aussparung (35) nach der Ausdehnung der Scheibe durch Eindringen des Keils (5) während des Pressens aufweist, dadurch gekennzeichnet, daß die hohle Scheibe aus zwei unterschiedlichen Teilen besteht, einem vorderen Teil (6) in Form eines zylindrischen Ringes, dessen Innenfläche die Seitenwand der Aussparung (35) bildet, und einem hinteren Teil (30), der ein Befestigungsstück für die Stampferstange (12) bildet und auf der Seite des Blocks (4) durch eine Querfläche (71) begrenzt ist, welche den Boden der Aussparung (35) im Inneren des Ringes (6) bildet und einen kreisförmigen Querschnitt mit einem Durchmesser hat, der im wesentlichen gleich dem der kleinen Basis (66) der kegelstumpfförmigen Abstandsfläche (63) der Aussparung (35) ist, die vor der inneren Fläche des Ringes angeordnet ist, wobei die Ausdehnungsbeanspruchung einzig durch den zylindrischen Ring (6) und die Kompressionsbeanspruchung durch den hinteren Teil (30) für die Befestigung der hohlen Scheibe gehalten werden.
2. Preßscheibe nach Anspruch 1, dadurch gekennzeichnet, daß die Innenfläche des zylindrischen Ringes (6) in Verlängerung der kegelstumpfförmigen Abstandsfläche (63) eine zylindrische Fläche (64) aufweist, die sich mit scharfem Winkel am kreisförmigen Rand (73) des Bodens der Aussparung (35) anschließt.
3. Preßscheibe nach Anspruch 2, dadurch gekennzeichnet, daß die kegelstumpfförmige Fläche (54) des Keiles (5) zum Inneren der Aussparung (35) durch eine im wesentlichen zylindrische Querfläche (55) verlängert ist, die von der inneren Fläche (64) des Ringes (6) mit leichtem Spiel in Abstand gehalten ist und mit scharfem Winkel zum Vorderteil hin mit der kleinen Basis (66) der kegelstumpfförmigen Abstandsfläche (63) und zum hinteren Teil mit dem kreisförmigen Rand (58) der Querfläche (56) unter Abstützung des Keiles (5) Anschluß hat.
4. Preßscheibe nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet, daß der zylindrische Ring (6) ohne Spiel in ein zylindrisches Teil (7) eingepaßt ist, welches vor dem Befestigungsstück (30) der Scheibe vorspringend angeordnet ist und deren Vorderende (71) den Boden der Aussparung (35) bildet.
5. Preßscheibe nach Anspruch 4, dadurch gekennzeichnet, daß der zylindrische Ring (6) an seinem hinteren Ende mit einem Innengewinde versehen ist, welches sich auf ein Außengewinde schraubt, welches auf dem vorspringenden Teil (7) des Befestigungsstückes (30) angeordnet ist.
6. Preßscheibe nach Anspruch 4, dadurch gekennzeichnet, daß das Befestigungsstück (30) am Außenumfang seines vorspringenden Teils (7) von einer Vielzahl von Bohrungen (36) durchquert wird, die parallel zur Achse liegen und in welche Schrauben (37) eindringen, deren mit Gewinde versehene Enden in die entsprechenden Bohrungen (65) des zylindrischen Ringes (6) in Eingriff treten, die mit Innengewinde versehen sind.
7. Preßscheibe nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Befestigungsstück (30) aus einem ziemlich harten Metall hergestellt ist, um dem Druck zu widerstehen, und daß der zylindrische Ring (6) aus einem weniger harten und elastischeren Material hergestellt ist.
EP85402437A 1984-12-10 1985-12-06 Pressscheibe zum Strangpressen von Metall Expired EP0187582B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85402437T ATE43519T1 (de) 1984-12-10 1985-12-06 Pressscheibe zum strangpressen von metall.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8418810 1984-12-10
FR8418810A FR2574321B1 (fr) 1984-12-10 1984-12-10 Grain de poussee pour le filage de metal

Publications (2)

Publication Number Publication Date
EP0187582A1 EP0187582A1 (de) 1986-07-16
EP0187582B1 true EP0187582B1 (de) 1989-05-31

Family

ID=9310406

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85402437A Expired EP0187582B1 (de) 1984-12-10 1985-12-06 Pressscheibe zum Strangpressen von Metall

Country Status (4)

Country Link
EP (1) EP0187582B1 (de)
AT (1) ATE43519T1 (de)
DE (1) DE3570611D1 (de)
FR (1) FR2574321B1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5918498A (en) * 1996-07-18 1999-07-06 Robbins; Paul H. Dummy block construction

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2925176A (en) * 1956-09-14 1960-02-16 Kaiser Aluminium Chem Corp Dummy head or block for end of extrusion ram
US3731519A (en) * 1971-07-29 1973-05-08 Aluminum Co Of America Two piece flexing die holder
GB2067944B (en) * 1980-01-26 1983-03-23 Centry Aluminium Co Ltd Extrusion process

Also Published As

Publication number Publication date
ATE43519T1 (de) 1989-06-15
FR2574321A1 (fr) 1986-06-13
EP0187582A1 (de) 1986-07-16
FR2574321B1 (fr) 1987-02-27
DE3570611D1 (en) 1989-07-06

Similar Documents

Publication Publication Date Title
EP0034549B1 (de) Verfahren zum Einrollen von Rohren in Platten und Werkzeug zur Durchführung dieses Verfahrens
EP2259901B1 (de) Wiederverwendbare vorübergehende befestigungsvorrichtung zur vormontage von mindestens zwei vorab durchlochten bauteilen
EP3539685B1 (de) Werkzeug und verfahren zum setzen einer blindbefestigung
CA2913861C (fr) Dispositif de fixation de deux pieces entre elles
FR2597058A1 (fr) Dispositif de serrage a liberation rapide pour moyeu de bicyclette
EP0381556B1 (de) Hohlbolzen mit inneren Ausbuchtungen und deren Herstellung
FR2700193A1 (fr) Dispositif d'étanchéité en métal.
FR2956340A1 (fr) Procede et dispositif de demontage d'une bague fermement ajustee dans un alesage
EP1941167A1 (de) Blindniet und verfahren zu dessen entfernung
EP0117213A1 (de) Vorrichtung zur Kaltverformung metallischer Werkstücke mit entgegengesetzten Axialteilen
EP0187582B1 (de) Pressscheibe zum Strangpressen von Metall
EP0329567B1 (de) Verfahren zum Strangpressen von Metall, insbesondere von Aluminium und Strangpresse zur Durchführung des Verfahrens
EP0533561A1 (de) Abnehmbare Vorrichtung zum Zusammenfügen von Unterteilen die mit einem Loch vorsehen sind
EP0623402B1 (de) Verfahren zum Strangpressen von Metall und Strangpresse
EP0062567B1 (de) Fahrzeugscheibenbremse
EP0106751A1 (de) Verfahren zur Herstellung zylindrischer Werkstücke mit fortschreitend wachsenden Durchmessern und Vorrichtung zur Durchführung des Verfahrens
EP0506932A1 (de) Verfahren und vorrichtung zum einsetzen von einem o-ring in eine nut
FR2524112A1 (fr) Joint tubulaire filete muni d'un dispositif de freinage
FR2537672A1 (fr) Appareil de fixation aveugle et assemblage comportant un tel appareil
CH303009A (fr) Clavette disque.
CH649237A5 (fr) Outil annulaire de coupe pour percer des trous dans des pieces a usiner.
FR2959431A1 (fr) Dispositif d'assemblage a sertir
FR2556058A1 (fr) Vis a filetage court et empreinte " etoile " cote filetage, et procede pour sa fabrication
FR2750901A1 (fr) Procede de deblocage d'une billette dans une presse a filer
FR2710307A1 (fr) Anti-vol notamment pour moto à freinage à disques.

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 DE GB IT

17P Request for examination filed

Effective date: 19860618

17Q First examination report despatched

Effective date: 19871030

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: CLECIM SA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE DE GB IT

REF Corresponds to:

Ref document number: 43519

Country of ref document: AT

Date of ref document: 19890615

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3570611

Country of ref document: DE

Date of ref document: 19890706

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

Ref country code: GB

Payment date: 19891231

Year of fee payment: 5

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

26 Opposition filed

Opponent name: SMS HASENCLEVER MASCHINENFABRIK GMBH

Effective date: 19900228

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

Ref country code: GB

Effective date: 19901206

GBPC Gb: european patent ceased through non-payment of renewal fee
ITTA It: last paid annual fee
PLBN Opposition rejected

Free format text: ORIGINAL CODE: 0009273

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: OPPOSITION REJECTED

27O Opposition rejected

Effective date: 19910712

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

Ref country code: AT

Payment date: 19931203

Year of fee payment: 9

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

Ref country code: AT

Effective date: 19941206

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

Ref country code: BE

Payment date: 19941212

Year of fee payment: 10

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

Ref country code: DE

Payment date: 19950124

Year of fee payment: 10

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

Ref country code: BE

Effective date: 19951231

BERE Be: lapsed

Owner name: S.A. CLECIM

Effective date: 19951231

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

Ref country code: DE

Effective date: 19960903

APAH Appeal reference modified

Free format text: ORIGINAL CODE: EPIDOSCREFNO