EP0288780B1 - Strangpresswerkzeug zur Herstellung eines Bohrerrohlings mit mindestens einer innenliegenden, wendelförmig verlaufenden Spülbohrung - Google Patents

Strangpresswerkzeug zur Herstellung eines Bohrerrohlings mit mindestens einer innenliegenden, wendelförmig verlaufenden Spülbohrung Download PDF

Info

Publication number
EP0288780B1
EP0288780B1 EP88105349A EP88105349A EP0288780B1 EP 0288780 B1 EP0288780 B1 EP 0288780B1 EP 88105349 A EP88105349 A EP 88105349A EP 88105349 A EP88105349 A EP 88105349A EP 0288780 B1 EP0288780 B1 EP 0288780B1
Authority
EP
European Patent Office
Prior art keywords
nozzle
mandrel
press tool
extrusion press
tool according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP88105349A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0288780A2 (de
EP0288780A3 (en
Inventor
Peter Cleve
Alfons Lomberg
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.)
Fried Krupp AG
Original Assignee
Fried Krupp AG
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 Fried Krupp AG filed Critical Fried Krupp AG
Priority to AT88105349T priority Critical patent/ATE69744T1/de
Publication of EP0288780A2 publication Critical patent/EP0288780A2/de
Publication of EP0288780A3 publication Critical patent/EP0288780A3/de
Application granted granted Critical
Publication of EP0288780B1 publication Critical patent/EP0288780B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids
    • E21B10/61—Drill bits characterised by conduits or nozzles for drilling fluids characterised by the nozzle structure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/02—Making uncoated products
    • B21C23/04—Making uncoated products by direct extrusion
    • B21C23/08—Making wire, rods or tubes
    • B21C23/10—Making finned tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/02—Making uncoated products
    • B21C23/04—Making uncoated products by direct extrusion
    • B21C23/14—Making other products
    • B21C23/147—Making drill blanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C25/00—Profiling tools for metal extruding

Definitions

  • the invention relates to an extrusion tool for producing a drill blank with at least one internal, helically running flushing bore made of a plastic raw material made of hard metal or ceramic, with a nozzle which delimits a mold space and a mandrel arranged in its inlet area, which at least one in the outside of the nozzle longitudinal axis Bearing protruding, elastically deformable wire, wherein the inner wall of the nozzle is provided with at least one helical device in such a way that the raw material passing through the nozzle is twisted.
  • the mandrel of the extrusion tool is equipped with one or more wires made of an elastically deformable material in accordance with the number of flushing holes desired; this should be such that each wire adapts to the screwing motion of the raw material in the area of the nozzle with the least possible resistance to deformation and in this way causes the formation of the helical flushing hole in the plastic raw material.
  • Possible elastic wire materials are: copper, copper or bundle metal alloys, iron, iron alloys, light metals and light metal alloys using aluminum in particular;
  • plastics such as polyamide has proven to be particularly advantageous, and also as a coating for otherwise metallic wires.
  • the angle between the respective connecting lines can be 0 ° or 90 ° or else Accept the desired intermediate values.
  • the spiral angle of the helical projection in the nozzle should be chosen somewhat larger than the spiral angle desired for the drill blank; usually the relevant oversize is on the order of 3 to 7 °.
  • the disadvantage of the prior art in question is that the mandrel and accessories and the nozzle are only accessible after the removal of the extrusion tool from the associated holding structure and therefore a fine adjustment or readjustment of the extrusion tool is cumbersome and time-consuming.
  • the object is achieved by an extrusion tool which has the features of claim 1.
  • the basic idea of the invention consists in a design of the extrusion tool, in which the nozzle and the mandrel can be held in different positions. This means the possibility, on the one hand, of designing and arranging the nozzle and the mandrel to be displaceable relative to one another and, on the other hand, of locking the two components mentioned in a desired mutual association; the subject of the invention should preferably be such that the mutual assignment can be changed continuously.
  • the mode of operation of the extrusion tool - and thus the design of the drill blank to be produced - can be set within the scope of the inventive concept in that the nozzle and the mandrel are held rotatable relative to one another about the longitudinal axis of the nozzle; the rotary adjustment in question has the result that the at least one internal flushing bore with respect to the drill blank - for example with respect to an associated helical groove - assumes a different angular position compared to a previously assumed starting position.
  • the subject of the invention can also be designed in such a way that the nozzle and the mandrel are held only in the longitudinal direction either only or in addition to the possibility of rotary adjustment relative to one another.
  • the position of the elastically deformable wire with respect to the longitudinal axis of the nozzle can be changed in a certain area. If, for example, the mandrel protruding into the inlet area of the nozzle is moved slightly away from the molding space, the at least one wire experiences a somewhat greater deformation in the direction of the longitudinal axis of the nozzle compared to the initial position; this has the consequence that the distance of the rinsing hole formed during the extrusion process to the longitudinal axis of the nozzle is reduced. By longitudinally displacing the mandrel in the opposite direction, the distance between the at least one flushing bore and the longitudinal axis of the nozzle may be increased.
  • a retaining ring carrying the mandrel is detachably connected via a tension ring to the nozzle holder, on which the tension ring is rotatably supported.
  • the nozzle is movably supported on its holder via a straight guide;
  • the straight guide can be realized in a simple manner in that the outside of the nozzle has a longitudinal groove in which the nozzle holder engages via a projection, for example in the form of a cylindrical pin.
  • the nozzle on its outlet side facing away from the mandrel is held by an adjusting ring, the support surface of which lies against the nozzle and can be moved in the longitudinal direction of the nozzle holder with respect to the latter in different positions.
  • the mobility of the support surface can be made possible by the fact that the adjusting ring can itself be displaced in the longitudinal direction of the nozzle holder and can be fixed by means of a clamping element.
  • the subject of the invention can also be designed so that the Locking ring forms a screw connection with the nozzle holder and carries a locking screw that can be clamped with the nozzle holder; with the rotation of the locking ring, its support surface also performs a movement in the longitudinal direction of the nozzle holder, with the result that the nozzle can also change its position with respect to the holder.
  • the nozzle and the inlet area preceding it which has an inlet bore narrowing in the direction of movement of the raw material, can in principle be of multiple parts; the inlet area is preferably attached to the nozzle, if possible also detachably.
  • the mandrel In order to ensure that the plastic raw material completely fills the molding space immediately following the mandrel outside the area of the at least one wire, the mandrel is conical in the area in question of its front section; the cone angle should be at least 90 °, but preferably around 120 °.
  • each helical device of the nozzle is designed as a groove or as a projection projecting in the direction of the longitudinal axis of the nozzle. It is possible to equip the drill blank with either a few grooves or protrusions, which can serve as a starting point for the manufacture of chip chambers.
  • the subject of the invention can also be designed in such a way that the nozzle inner wall as helical devices has a plurality of grooves with a small cross section.
  • grooves ensure that the plastic raw material undergoes the necessary twisting as it passes through the nozzle, with the production of a correspondingly shaped flushing hole or several correspondingly shaped flushing holes; After the production of the drill blank, the flat projections caused by the grooves can be removed with little effort by a grinding process.
  • the extrusion tool points in the direction of extrusion (arrow 1) - i.e. Seen from left to right in FIG. 1 - the main components are a retaining ring 2 with a connection threaded bore 2a and external adjustment grooves 2b, a clamping ring 3 with external adjustment grooves 3a, an essentially tubular nozzle holder 4 with radially arranged adjustment bores 4a and a locking ring 5 with an end face arranged adjustment holes 5a.
  • the extrusion tool can be fastened to a support structure, not shown, via which the plastic raw material to be processed is fed via the connection threaded bore 2a.
  • the retaining ring 2 carries on three radially aligned webs 2c a hub 2d in which a mandrel 6 is detachably held by means of a cylindrical pin 7; securing the mandrel in the longitudinal direction (ie in Direction of arrow 1) takes place via a paragraph 6a.
  • Two wires 8 made of elastic plastic emerge from the conical front section 6b of the mandrel; these merge into one another within the mandrel and are therefore part of the same wire section.
  • the plastic should be such that it opposes the deformation occurring during the extrusion process as little as possible resistance to deformation and has the lowest possible frictional resistance with respect to the plastic raw material.
  • the part 6c of the front section, in which the wires 8 protrude beyond it, has the shape of a cone with a cone angle of 120 °; in contrast, the part of the front section in front of it is designed as an acute-angled cone.
  • the wire section forming the two wires 8 is held in the mandrel via two bores 6d and fastened to it by gluing.
  • the detachable connection between the holder 2 and the nozzle holder 4 consists of the already mentioned clamping ring 3, which is supported on the one hand on a flange 4b of the component 4 and on the other hand forms a screw connection via its threaded bore 3c with a threaded section 2d of the holding ring.
  • a rigid connection can be established between the components 2 and 4 either via the sealing surface 4c or the possibility of a rotary adjustment can be created.
  • the nozzle holder 4 has a cylindrical bore 4e between a narrowing initial bore 4d and an expanding end bore 4f, in which there is a nozzle 9 with an upstream inlet region 9a in the longitudinal direction movably supported; the longitudinal axis of the nozzle, which coincides with the axis of the mandrel 6, is designated by 10.
  • the straight guide of the nozzle 9 and the inlet area 9a attached to it consists of a guide pin 11 connected to the nozzle holder 4, which engages in a longitudinal groove 9b in the outer surface of the nozzle. While the nozzle 9 delimits a generally cylindrical mold space 9c, the inlet region 9a has an inlet bore 9d narrowing in the direction of extrusion.
  • the position of the nozzle 9 and the inlet area 9a with respect to the nozzle holder 4 and with respect to the mandrel 6 can be determined or changed by means of the locking ring 5, which forms a screw connection with the nozzle holder 4 in the region of the end bore 4f; this is composed on the one hand of the threaded bore 5b of the component 5 and on the other hand of a threaded section 4g of the component 4.
  • the nozzle 9 is supported on its outlet side facing away from the mandrel 6 on a support surface 5c of the locking ring 5; by rotating the locking ring, the support surface 5c can either be moved towards or away from the mandrel 6.
  • a locking screw 12 is used, via which the components 4 and 5 can be immovably clamped together.
  • the bore 5d of the locking ring 5 is in any case dimensioned larger than the cross section of the molding space 9c.
  • the position of the nozzle 9 and the inlet area 9a with respect to the parts 6b and 6c of the mandrel 6 is Insofar as it changes the deformation of the wires 8 with respect to the longitudinal axis 10 under the influence of the supplied plastic raw material (for example hard metal): the further the part 6c in front of the nozzle 9, the more the wires 8 have the possibility of being underneath Reducing their mutual distance to approach the longitudinal axis 10 of the nozzle.
  • the position of the rinsing bores generated by means of the wires 8 (cf. FIG. 5) within the drill blank can thus be changed continuously and delicately in the desired manner without much time and effort by turning the adjusting ring 5.
  • the nozzle 9 can be designed differently with regard to the design of its inner wall 9c delimiting the molding space 9c (cf. FIGS. 3, 4, 6 and 7). It is essential for the production of a drill blank with at least one internal, helical flushing bore that the inner wall has at least one helical device for twisting the plastic raw material supplied; this twisting device should be such that the raw material is guided at least over an angle of 90 °, preferably over an angle of at least 180 °.
  • the nozzle 9 is equipped with two projections 9e which are opposite each other with respect to the longitudinal axis 10 and project in the direction of these and which extend helically over an angular range of 90 °.
  • the drill blank 13 sketched in FIG. 5 has a helical groove 14 and two internal rinsing holes 15 which are offset to the groove 14. The latter has been produced (in contrast to FIGS. 3 and 4) with a nozzle which only has a projection projecting in the direction of the longitudinal axis of the nozzle.
  • a nozzle 9 shown in Fig. 6 has on the inner space 9c delimiting the inner space 9 'two with respect to the longitudinal axis 10 opposite, cross-sectionally semicircular grooves 9f, which also extend helically over an angular range of 90 °.
  • the use of such a nozzle leads to the formation of a drill blank which has an outer contour equipped with two helical ribs.
  • the inner wall of the nozzle 9 is equipped with a large number of closely spaced grooves 9h, which have a small cross-section and also extend helically over a sufficiently dimensioned angular range, for example of at least 90 °.
  • the advantage of this embodiment is that the small-sized grooves 9h ensure sufficient twisting of the plastic raw material and that a raw tool with a smooth, cylindrical surface can be produced from the resulting drill bit with at least one internal flushing hole with little effort by grinding.
  • the position of the at least one internal flushing hole with respect to the at least one groove or Rib of the drill blank can be influenced in a simple manner in that after loosening the clamping ring, the nozzle holder 4 with the fixing ring 5 attached thereto is rotated with respect to the holding ring 2 by the desired angular dimension, with the result that the position of the on the mandrel 6 held wires 8 changes with respect to the nozzle 9 moving with the nozzle holder 4 (cf. FIG. 1).
  • the eccentrically attached to the mandrel wires 8 are such that they deform helically without great resistance to deformation - the twisting of the plastic raw material in the nozzle - and thus lead to the formation of the internal flushing holes already mentioned.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Extrusion Of Metal (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)
  • Drilling Tools (AREA)
  • Powder Metallurgy (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Forging (AREA)
EP88105349A 1987-04-30 1988-04-02 Strangpresswerkzeug zur Herstellung eines Bohrerrohlings mit mindestens einer innenliegenden, wendelförmig verlaufenden Spülbohrung Expired - Lifetime EP0288780B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88105349T ATE69744T1 (de) 1987-04-30 1988-04-02 Strangpresswerkzeug zur herstellung eines bohrerrohlings mit mindestens einer innenliegenden, wendelfoermig verlaufenden spuelbohrung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3714479 1987-04-30
DE19873714479 DE3714479A1 (de) 1987-04-30 1987-04-30 Strangpresswerkzeug zur herstellung eines bohrerrohlings mit mindestens einer innenliegenden, wendelfoermig verlaufenden spuelbohrung

Publications (3)

Publication Number Publication Date
EP0288780A2 EP0288780A2 (de) 1988-11-02
EP0288780A3 EP0288780A3 (en) 1990-06-13
EP0288780B1 true EP0288780B1 (de) 1991-11-27

Family

ID=6326617

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88105349A Expired - Lifetime EP0288780B1 (de) 1987-04-30 1988-04-02 Strangpresswerkzeug zur Herstellung eines Bohrerrohlings mit mindestens einer innenliegenden, wendelförmig verlaufenden Spülbohrung

Country Status (5)

Country Link
US (1) US4831859A (enrdf_load_stackoverflow)
EP (1) EP0288780B1 (enrdf_load_stackoverflow)
JP (1) JPS63278612A (enrdf_load_stackoverflow)
AT (1) ATE69744T1 (enrdf_load_stackoverflow)
DE (2) DE3714479A1 (enrdf_load_stackoverflow)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3814687A1 (de) * 1988-04-30 1989-11-09 Krupp Widia Gmbh Strangpresswerkzeug
AT400687B (de) * 1989-12-04 1996-02-26 Plansee Tizit Gmbh Verfahren und strangpresswerkzeug zur herstellung eines rohlings mit innenliegenden bohrungen
US5000025A (en) * 1990-04-30 1991-03-19 Brazeway, Inc. Extrusion machinery
DE4120166C2 (de) * 1991-06-19 1994-10-06 Friedrichs Konrad Kg Strangpreßwerkzeug zur Herstellung eines Hartmetall- oder Keramikstabes mit gedrallten Innenbohrungen
WO1993020961A1 (de) * 1992-04-08 1993-10-28 Gühring, Jörg Verfahren und vorrichtung zur kontinuierlichen herstellung von zylindrischen stäben mit zumindest einem innenliegenden, wendelförmigen kanal, und nach diesem verfahren hergestellter sinterrohling
US5220791A (en) * 1992-06-01 1993-06-22 Antonio Bulzomi Heat resistant work shoe
SE516268C2 (sv) * 1999-06-03 2001-12-10 Seco Tools Ab Metod och anordning med radiellt rörliga backar för strängpressning av roterande verktyg
US6878069B2 (en) * 2003-06-05 2005-04-12 Sps Technologies, Inc. Helical groove fasteners and methods for making same
SE527475C2 (sv) * 2004-05-04 2006-03-21 Sandvik Intellectual Property Metod och anordning för tillverkning av ett borrämne eller fräsämne
CN103447339A (zh) * 2013-08-23 2013-12-18 浙江工业大学 三轴高频复合颤振冷挤压模具

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1325301A (en) * 1919-12-16 of paris
US2422994A (en) * 1944-01-03 1947-06-24 Carboloy Company Inc Twist drill
US2954121A (en) * 1955-03-14 1960-09-27 Donald O Benson Extrusion of spirally formed article
US3242712A (en) * 1961-12-04 1966-03-29 Gen Dynamics Corp Apparatus for the forming of articles
GB971398A (en) * 1962-08-14 1964-09-30 William Shiel Caisley Improvements relating to the extrusion of fluted rod-like articles
US3186210A (en) * 1963-01-21 1965-06-01 Cleveland Twist Drill Co Extrusion die
US3302440A (en) * 1963-03-20 1967-02-07 Schloemann Ag Extrusion presses, particularly cable-sheathing presses
JPS441244Y1 (enrdf_load_stackoverflow) * 1966-02-16 1969-01-18
US3363469A (en) * 1966-03-29 1968-01-16 Mose S. Crane Segmented measuring cup
US3605475A (en) * 1969-06-19 1971-09-20 Nat Machinery Co The Method and apparatus for extruding gear blanks
US4059031A (en) * 1974-03-28 1977-11-22 Erdelyi Frank F Method and apparatus for the production of machine tools
JPS61227101A (ja) * 1985-03-29 1986-10-09 Mitsubishi Metal Corp ドリル用押し出し成型機
DE8536805U1 (de) * 1985-10-31 1986-08-21 Fried. Krupp Gmbh, 4300 Essen Strangpreßwerkzeug zur Herstellung eines Hartmetall- oder Keramikbohrerrohlings
DE3600681A1 (de) * 1985-10-31 1987-05-07 Krupp Gmbh Hartmetall- oder keramikbohrerrohling sowie verfahren und strangpresswerkzeug zu seiner herstellung
DE8530884U1 (de) * 1985-10-31 1986-08-14 Fried. Krupp Gmbh, 4300 Essen Hartmetall- oder Keramikbohrerrohling

Also Published As

Publication number Publication date
JPH0450085B2 (enrdf_load_stackoverflow) 1992-08-13
EP0288780A2 (de) 1988-11-02
ATE69744T1 (de) 1991-12-15
EP0288780A3 (en) 1990-06-13
JPS63278612A (ja) 1988-11-16
DE8717444U1 (de) 1989-01-12
DE3714479C2 (enrdf_load_stackoverflow) 1989-06-15
DE3714479A1 (de) 1988-11-17
US4831859A (en) 1989-05-23

Similar Documents

Publication Publication Date Title
DE19644447C2 (de) Verfahren und Vorrichtung zur kontinuierlichen Extrusion von mit einem wendelförmigen Innenkanal ausgestatteten Stäben aus plastischem Rohmaterial
DE3600681C2 (enrdf_load_stackoverflow)
DE4120165C2 (de) Strangpreßwerkzeug zur Herstellung eines Hartmetall- oder Keramikstabes
EP0431681B1 (de) Verfahren und Strangpresswerkzeug zur Herstellung eines Rohlings mit innenliegenden Bohrungen
EP0288780B1 (de) Strangpresswerkzeug zur Herstellung eines Bohrerrohlings mit mindestens einer innenliegenden, wendelförmig verlaufenden Spülbohrung
DE69309101T2 (de) Extrudereinrichtung mit mitteln zur anpassung des abgabenendes einer extrusionsdüse relativ zu einem extruder zur ausrichtung einer stromabwärts liegenden vorrichtung
EP1042086B1 (de) Verfahren zur herstellung eines bohrwerkzeugs für werkzeugmaschinen
EP0340495A2 (de) Strangpresswerkzeug
DE69218350T2 (de) Konische Reibahle
DE10229325B4 (de) Strangpresswerkzeug zur Herstellung eines aus plastischer Masse bestehenden zylindrischen Körpers
DE19522141C2 (de) Rotierendes Schaftwerkzeug
DE10157190B4 (de) Kalibriervorrichtung für ein extrudiertes Kunstoffrohr
EP2254715B1 (de) Werkzeug
DE69701815T2 (de) Schutzhülle für extrusionsmaschine
EP2223752B1 (de) Werkzeugbausatz zum Ausbilden von an einer Werkzeugeinheit einer Biegemaschine ankoppelbaren Biegewerkzeugen zum Biegen oder Wickeln strangförmiger Werkstücke
DE4021383A1 (de) Hartmetall- oder keramikstab, verfahren zu seiner herstellung und strangpresswerkzeug zur durchfuehrung des verfahrens
DE4211827C2 (de) Verfahren und Strangpreßwerkzeug zur kontinuierlichen Herstellung von zylindrischen Stäben mit zumindest einem innenliegenden, wendelförmigen Kanal, und nach diesem Verfahren hergestellter Stab
EP0406226B1 (de) Wendelkopfverteiler für eine Kunststoff-Extrusionseinrichtung
WO2004002642A1 (de) Strangpresswekzeug zur herstellung eines aus plastischer masse bestehenden zylindrischen körpers
DE102008015581A1 (de) Werkzeug
DE19920521A1 (de) Ausrichtvorrichtung zum Einpassen eines Kraftfahrzeugschweinwerfers in einen Karosserieausschnitt
EP3106265A1 (de) Handwerkzeug und verfahren zu dessen herstellung
EP0910445A1 (de) Flüssigkeitsverteiler für eine stoffaustauschkolonne
DE29624253U1 (de) Vorrichtung zur kontinuierlichen Extrusion von mit einem wendelförmigen Innenkanal ausgestatteten Stäben aus plastischem Rohmaterial
EP0128134A2 (de) Querspritzkopf zur Kabelummantelung

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): AT BE CH ES FR GB GR IT LI LU NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

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

17P Request for examination filed

Effective date: 19900512

17Q First examination report despatched

Effective date: 19901213

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 ES FR GB GR IT LI LU NL SE

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 FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;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: 19911127

Ref country code: ES

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19911127

Ref country code: BE

Effective date: 19911127

Ref country code: NL

Effective date: 19911127

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19911127

REF Corresponds to:

Ref document number: 69744

Country of ref document: AT

Date of ref document: 19911215

Kind code of ref document: T

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
ET Fr: translation filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Effective date: 19920430

Ref country code: LU

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

Effective date: 19920430

Ref country code: LI

Effective date: 19920430

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
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: CH

Ref legal event code: PL

EAL Se: european patent in force in sweden

Ref document number: 88105349.0

REG Reference to a national code

Ref country code: FR

Ref legal event code: TP

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

REG Reference to a national code

Ref country code: FR

Ref legal event code: CD

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: SE

Payment date: 20070412

Year of fee payment: 20

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

Ref country code: AT

Payment date: 20070413

Year of fee payment: 20

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

Ref country code: GB

Payment date: 20070426

Year of fee payment: 20

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

Expiry date: 20080401

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

Ref country code: FR

Payment date: 20070416

Year of fee payment: 20

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 EXPIRATION OF PROTECTION

Effective date: 20080401

EUG Se: european patent has lapsed