EP0153754A2 - Grinding device for hard material - Google Patents
Grinding device for hard material Download PDFInfo
- Publication number
- EP0153754A2 EP0153754A2 EP85102264A EP85102264A EP0153754A2 EP 0153754 A2 EP0153754 A2 EP 0153754A2 EP 85102264 A EP85102264 A EP 85102264A EP 85102264 A EP85102264 A EP 85102264A EP 0153754 A2 EP0153754 A2 EP 0153754A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- cone
- shaped body
- disc
- axis
- hollow cone
- 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.)
- Withdrawn
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C7/00—Crushing or disintegrating by disc mills
- B02C7/005—Crushers with non-coaxial toothed discs with intersecting axes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
- B02C15/16—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs with milling members essentially having different peripheral speeds and in the form of a hollow cylinder or cone and an internal roller or cone
Definitions
- the invention relates to a device for crushing hard material with a lower disc-shaped body which is rotatable by a drive about a vertical axis, with an upper straight cone, the tip of which faces the disc-shaped body and whose axis to the axis of the disc-shaped body with formation a crushing area between the surface of the disc-shaped body and its conical surface is inclined, with a drive for rotating the upper cone in the direction of rotation of the lower disc-shaped body, with a device for displacing the upper cone along its axis and with one of the upper cone and the lower disc-shaped body enclosing housing in which an inlet for the material to be shredded on the top and an outlet for the shredded material on the underside is provided.
- Such a device known from DE-A-26 06 485 is used for breaking hard material with a low coefficient of friction, as is required in the mining raw materials industry, in construction methods and in ceramics.
- the disc-shaped body has a horizontal surface which forms a crushing gap on the side opposite the material feed with the conical surface of the upper cone, the size of which is set on the basis of the desired crushing size of the comminuted material, the cone is mounted to allow axially parallel suspension.
- the material can be broken, but not gripped and ground, especially if the material has a low friction factor, since the angle of entry for the material into the size reduction area between the conical surface and the disc plane has an oval contour on one side and on the other other side has a straight contour.
- the object underlying the invention is now to design the device of the type mentioned in such a way that it can not only break but also grind with its hard material to be shredded, even if it has a low coefficient of friction.
- the size reduction area of the device according to the invention is located between the lateral surfaces of the cone and the hollow cone results in a curvilinear horn-shaped entry angle for the material to be ground between two oval working zones of the lateral surfaces, which reliably grips the material to be ground, for example mineral raw materials , and thus allows the material to be broken and ground even at high peripheral speeds of the cone and disc.
- the cone angle of the hollow cone is expediently greater than that of the upper cone.
- the upper cone is a device for adjusting the angle of inclination of its axis to the vertical axis of the disc-shaped body connected to the recess in the form of a hollow cone.
- the device shown in Fig. 1 has a frame 1 which carries a housing 2 which is covered by a cover 3.
- a cylindrical disc-shaped body 4 is arranged horizontally, the underside of which rests on a bearing 5 and can be rotated about its axis 20 by a drive 6.
- the disc-shaped body 4 has on its top a depression in the form of a straight hollow cone 7.
- a cone 8 is held via a bearing 9, which is displaceable and resiliently supported in the direction of its axis 21 by means of a device 22.
- a shredding area 18 can be set between the outer surface 19 of the upper cone 8 and the outer surface of the hollow cone 7 in the lower disc-shaped body 4, the surface lines of which lie parallel to one another in the axial section, which is approximately the case with the arrangement according to FIG.
- the intersection of the axes 20 and 21 lies in the tip of the cone 8, or form an acute angle with one another, as can be seen from FIGS. 3 and 4.
- 3 lies in the sectional plane of the bases of the cone 8 and the hollow cone 7, the axes 20 and 21 intersecting at the tip of the hollow cone.
- the tip of the acute angle between the generatrices of the cone 8 and the hollow cone 7 is in the region of the two tips of the cone 8 and the hollow cone 7, the axes 21 and 20 of which intersect in the almost collapsing tips.
- the housing 2 at the top an inlet 16 for the material to be shredded and on the opposite side in the lower region an outlet 17 for the shredded material is provided.
- the hard material to be shredded introduced into the device through the inlet 16 reaches the shredding area 18 between the outer surface 19 of the upper cone 8 and the outer surface of the hollow cone 7 in the disk-shaped body 4, both of which rotate in the same direction.
- the material is broken and ground in the shredding area 18 and leaves the device through the outlet 17.
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
- Disintegrating Or Milling (AREA)
Abstract
Description
Die Erfindung betrifft eine Vorrichtung zum Zerkleinern von hartem Gut mit einem unteren scheibenförmigen Körper, der durch einen Antrieb um eine vertikale Achse drehbar ist, mit einem oberen geraden Kegel, dessen Spitze dem scheibenförmigen Körper zugewandt ist und dessen Achse zur Achse des scheibenförmigen Körpers unter Bildung eines Zerkleinerungsbereichs zwischen der Oberfläche des scheibenförmigen Körpers und seiner Kegelfläche geneigt ist, mit einem Antrieb zum Drehen des oberen Kegels in der Drehrichtung des unteren scheibenförmigen Körpers, mit einer Einrichtung zum Verschieben des oberen Kegels längs seiner Achse und mit einem den oberen Kegel und den unteren scheibenförmigen Körper umschließenden Gehäuse, in welchem ein Einlaß für das zu zerkleinernde Gut auf der Oberseite und ein Auslaß für das zerkleinerte Gut auf der Unterseite.vorgesehen ist.The invention relates to a device for crushing hard material with a lower disc-shaped body which is rotatable by a drive about a vertical axis, with an upper straight cone, the tip of which faces the disc-shaped body and whose axis to the axis of the disc-shaped body with formation a crushing area between the surface of the disc-shaped body and its conical surface is inclined, with a drive for rotating the upper cone in the direction of rotation of the lower disc-shaped body, with a device for displacing the upper cone along its axis and with one of the upper cone and the lower disc-shaped body enclosing housing in which an inlet for the material to be shredded on the top and an outlet for the shredded material on the underside is provided.
Eine solche, aus der DE-A-26 06 485 bekannte Vorrichtung dient zum Brechen von hartem Gut mit niedrigem Reibwert, wie es in der Bergbaugrundstoffindustrie, im Bauweisen und in der Keramik benötigt wird. Der scheibenförmige Körper hat dabei eine horizontale Fläche, die auf der der Gutzuführung gegenüberliegenden Seite mit der Kegelfläche des oberen Kegels einen Brechspalt bildet, dessen Größe ausgehend von der gewünschten Brechgröße des zerkleinerten Guts eingestellt wird, wobei der Kegel eine achsparallele Federung zulassend gelagert ist.Such a device known from DE-A-26 06 485 is used for breaking hard material with a low coefficient of friction, as is required in the mining raw materials industry, in construction methods and in ceramics. The disc-shaped body has a horizontal surface which forms a crushing gap on the side opposite the material feed with the conical surface of the upper cone, the size of which is set on the basis of the desired crushing size of the comminuted material, the cone is mounted to allow axially parallel suspension.
Mit der bekannten Vorrichtung läßt sich zwar das Gut brechen, jedoch nicht greifen und mahlen, insbesondere wenn das Gut einen geringen Reibungsfaktor hat, da der Eintrittswinkel für das Gut in den Zerkleinerungsbereich zwischen der Kegelmantelfläche und der Scheibenebene auf einer Seite eine ovale Kontur und auf der anderen Seite eine gerade Kontur hat.With the known device, the material can be broken, but not gripped and ground, especially if the material has a low friction factor, since the angle of entry for the material into the size reduction area between the conical surface and the disc plane has an oval contour on one side and on the other other side has a straight contour.
Die der Erfindung zugrunde liegende Aufgabe besteht nun darin, die Vorrichtung der eingangs genannten Art so auszubilden, daß sich mit ihr hartes zu zerkleinerndes Gut, auch wenn dieses einen niedrigen Reibungswert hat, nicht nur brechen sondern auch mahlen läßt.The object underlying the invention is now to design the device of the type mentioned in such a way that it can not only break but also grind with its hard material to be shredded, even if it has a low coefficient of friction.
Diese Aufgabe wird ausgehend von der Vorrichtung der eingangs genannten Art dadurch gelöst,daß in der Oberfläche des scheibenförmigen Körpers eine Vertiefung in Form eines geraden Hohlkegels ausgebildet ist, dessen im Achsschnitt liegender Kegelwinkel sich von dem des oberen Kegels unterscheidet.This object is achieved on the basis of the device of the type mentioned at the outset in that a depression is formed in the surface of the disk-shaped body in the form of a straight hollow cone, the cone angle of which lies in the axial section and differs from that of the upper cone.
Dadurch, daß sich der Zerkleinerungsbereich der erfindungsgemäßen Vorrichtung zwischen den Mantelflächen des Kegels und des Hohlkegels befindet, ergibt sich für das zu zerkleinernde Gut ein krummliniger hornförmiger Eintrittswinkel zwischen zwei ovalen Arbeitszonen der Mantelflächen, was ein zuverlässiges Greifen des zu zerkleinernden Guts, beispielsweise von mineralischen Rohstoffen, und somit ein Brechen und Mahlen des Gutes auch bei hohen Umfangsgeschwindigkeiten von Kegel und Scheibe ermöglicht.The fact that the size reduction area of the device according to the invention is located between the lateral surfaces of the cone and the hollow cone results in a curvilinear horn-shaped entry angle for the material to be ground between two oval working zones of the lateral surfaces, which reliably grips the material to be ground, for example mineral raw materials , and thus allows the material to be broken and ground even at high peripheral speeds of the cone and disc.
ZweckmäBigerweiee ist der Kegelwinkel des Hohlkegels größer als der des oberen Kegels.The cone angle of the hollow cone is expediently greater than that of the upper cone.
Zur Einstellung des Zerkleinerungsbereiches zwischen den Mantelflächen von Kegel und Hohlkegel derart, daß die Mantellinien im Achsschnitt zueinander parallel oder spitzwinklig verlaufen, wobei die Spitze des spitzen Winkels den Kegelspitzen oder den Basen der Kegel zugewandt sein kann, ist mit dem oberen Kegel eine Einrichtung zum Einstellen des Neigungswinkels seiner Achse zu der vertikalen Achse des scheibenförmigen Körpers mit der Vertiefung in Form eines Hohlkegels verbunden.To adjust the size reduction area between the lateral surfaces of the cone and the hollow cone such that the surface lines in the axial section run parallel or at an acute angle to one another, the tip of the acute angle being able to face the cone tips or the bases of the cones, the upper cone is a device for adjusting the angle of inclination of its axis to the vertical axis of the disc-shaped body connected to the recess in the form of a hollow cone.
Anhand von Zeichnungen wird die Erfindung beispielsweise näher erläutert. Es zeigt:
- Fig. 1 eine teilweise axial geschnittene Seitenan-- sicht der Vorrichtung,
- Fig. 2 eine axial geschnittene Stirnansicht der Vorrichtung von Fig. 1 und
- Fig. 3 und Fig. 4 schematisch im Axialschnitt unterschiedlich ausgebildete Zerkleinerungsbereiche.
- Fig. 1 is a partially axially sectioned Seitenan- - view of the apparatus,
- Fig. 2 is an axially sectioned end view of the device of Fig. 1 and
- 3 and FIG. 4 schematically, differently designed shredding areas in axial section.
Die in Fig. 1 gezeigte Vorrichtung hat ein Gestell 1, das ein Gehäuse 2 trägt, das von einem Deckel 3 abgedeckt ist.The device shown in Fig. 1 has a
In dem Gehäuse 2 ist ein zylindrischer scheibenförmiger Körper 4 horizontal angeordnet, der mit seiner Unterseite auf einem Lager 5 sitzt und von einem Antrieb 6 um seine Achse 20 in Drehung versetzbar ist. Der scheibenförmige Körper 4 hat auf seiner Oberseite eine Vertiefung in Form eines geraden Hohlkegels 7.In the
Am Deckel 3 ist über ein Lager 9 ein Kegel 8 gehalten, der mit Hilfe einer Einrichtung 22 in Richtung seiner Achse 21 verschiebbar und federnd gelagert ist.On the
Welle und Antrieb 11 des Kegels 8 sind mit einer oberhalb des Deckels 3 befindlichen Traverse 10 verbunden, deren abgewinkeltes Ende sich in eine am Gehäuse 1 befestigte Stütze 13 erstreckt, an dieser Stütze 13 in einem Schwenklager 12 gelagert ist und in einen Einstellbock 15 ragt, der ein Stellglied 14 für das Fixieren der Einstellposition der Traverse 10 aufweist und damit des Winkels, unter dem die Achse 21 des Kegels 8 zur Achse 20 des scheibenförmigen Körpers 4 geneigt ist. Abhängig von dieser Einstellung läßt sich zwischen der Mantelfläche 19 des oberen Kegels 8 und der Mantelfläche des Hohlkegels 7 im unteren scheibenförmigen Körper 4 ein Zerkleinerungsbereich 18 einstellen, dessen Mantellinien im Achsschnitt zueinander parallel liegen, was in etwa bei der Anordnung nach Fig. 1 der Fall ist, wo der Schnittpunkt der Achsen 20 und 21 in der Spitze des Kegels 8 liegt, oder einen spitzen Winkel miteinander bilden, wie dies aus den Fig. 3 und 4 zu ersehen ist. Dabei liegt die Spitze dieses spitzen Winkels bei der Anordnung nach Fig. 3 in der Schnittebene der Basen des Kegels 8 und des Hohlkegels 7, wobei sich die Achsen 20 und 21 in der Spitze des Hohlkegels schneiden. Bei der Anordnung nach Fig. 4 liegt die Spitze des spitzen Winkels zwischen den Mantellinien des Kegels 8 und des Hohlkegels 7 im Bereich der beiden Spitzen des Kegels 8 und des Hohlkegels 7, deren Achsen 21 und 20 sich in den nahezu ineinanderfallenden Spitzen schneiden.Shaft and the
Wie aus Fig. 2 zu ersehen ist, ist in dem Gehäuse 2 an der Oberseite ein Einlaß 16 für das zu zerkleinernde Gut und auf der gegenüberliegenden Seite im unteren Bereich ein Auslaß 17 für das zerkleinerte Gut vorgesehen.As can be seen from FIG. 2, the
Das durch den Einlaß 16 in die Vorrichtung eingebrachte zu zerkleinernde harte Gut gelangt in den Zerkleinerungsbereich 18 zwischen der Mantelfläche 19 des oberen Kegels 8 und der Mantelfläche des Hohlkegels 7 in dem scheibenförmigen Körper 4, die sich beide in der gleichen Richtung drehen. Das Gut wird in dem Zerkleinerungsbereich 18 gebrochen und gemahlen und verläßt die Vorrichtung durch den Auslaß 17.The hard material to be shredded introduced into the device through the
Claims (3)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BG64465/84 | 1984-02-28 | ||
BG6446584A BG39663A1 (en) | 1984-02-28 | 1984-02-28 | Double- cone breaking and grinding machine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0153754A2 true EP0153754A2 (en) | 1985-09-04 |
EP0153754A3 EP0153754A3 (en) | 1986-08-06 |
Family
ID=3913466
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP85102264A Withdrawn EP0153754A3 (en) | 1984-02-28 | 1985-02-28 | Grinding device for hard material |
Country Status (9)
Country | Link |
---|---|
EP (1) | EP0153754A3 (en) |
JP (1) | JPS61458A (en) |
AU (1) | AU3928985A (en) |
BG (1) | BG39663A1 (en) |
ES (1) | ES8602444A1 (en) |
FI (1) | FI850701L (en) |
HU (1) | HUT36399A (en) |
NO (1) | NO850770L (en) |
YU (1) | YU28885A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10015375A1 (en) * | 2000-03-28 | 2001-10-04 | Draiswerke Gmbh | Device for pulverising and dispersing flowing ground material has grinding roller with second rotatable grinding face associated with first rotatable grinding face inside grinding container to define grinding gap inbetween |
WO2011117700A2 (en) | 2010-03-16 | 2011-09-29 | Axel Knobel | Device and method for the continuous treatment of masses and milling material |
EP2471642A1 (en) * | 2010-12-30 | 2012-07-04 | Mufit Caglayan | Micronizing apparatus and method for micronizing of vulcanized elastomeric materials |
CN106732911A (en) * | 2017-03-14 | 2017-05-31 | 贵州大学 | A kind of taper ore mill |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0779967B2 (en) * | 1988-04-25 | 1995-08-30 | 株式会社イセキ開発工機 | Crushing machine |
CN105377440B (en) * | 2013-07-22 | 2018-10-09 | Imp科技私人有限公司 | Adjustable super-fine crusher |
CN111940102B (en) * | 2020-07-16 | 2021-12-10 | 深圳市永祥医药有限公司 | Processing treatment device for biological reagent development |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE588854C (en) * | 1933-11-29 | Karl Friedrich Wilhelm | Device for comminuting raw materials containing oil or extract | |
US4067503A (en) * | 1976-04-12 | 1978-01-10 | Broman John S | Method of grinding in a mill |
US4199113A (en) * | 1975-02-26 | 1980-04-22 | Dso "Cherna Metalurgia" | Disc-type apparatus for crushing hard materials |
-
1984
- 1984-02-28 BG BG6446584A patent/BG39663A1/en unknown
-
1985
- 1985-02-20 FI FI850701A patent/FI850701L/en not_active Application Discontinuation
- 1985-02-25 YU YU28885A patent/YU28885A/en unknown
- 1985-02-26 JP JP3543685A patent/JPS61458A/en active Pending
- 1985-02-26 NO NO850770A patent/NO850770L/en unknown
- 1985-02-27 ES ES540747A patent/ES8602444A1/en not_active Expired
- 1985-02-27 HU HU73085A patent/HUT36399A/en unknown
- 1985-02-28 EP EP85102264A patent/EP0153754A3/en not_active Withdrawn
- 1985-02-28 AU AU39289/85A patent/AU3928985A/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE588854C (en) * | 1933-11-29 | Karl Friedrich Wilhelm | Device for comminuting raw materials containing oil or extract | |
US4199113A (en) * | 1975-02-26 | 1980-04-22 | Dso "Cherna Metalurgia" | Disc-type apparatus for crushing hard materials |
US4067503A (en) * | 1976-04-12 | 1978-01-10 | Broman John S | Method of grinding in a mill |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10015375A1 (en) * | 2000-03-28 | 2001-10-04 | Draiswerke Gmbh | Device for pulverising and dispersing flowing ground material has grinding roller with second rotatable grinding face associated with first rotatable grinding face inside grinding container to define grinding gap inbetween |
EP1138391A1 (en) * | 2000-03-28 | 2001-10-04 | DRAISWERKE GmbH | Device for milling, pulverizing and dispersing of fluid milling material |
US6565023B2 (en) | 2000-03-28 | 2003-05-20 | Draiswerke Gmbh | Apparatus for comminuting, grinding and dispersing flowable grinding stock |
WO2011117700A2 (en) | 2010-03-16 | 2011-09-29 | Axel Knobel | Device and method for the continuous treatment of masses and milling material |
WO2011117700A3 (en) * | 2010-03-16 | 2011-12-08 | Axel Knobel | Device and method for the continuous treatment of masses and milling material |
CN103097031A (en) * | 2010-03-16 | 2013-05-08 | 亚历克斯·诺贝尔 | Device and method for continuously preparing material and grinding material |
AT14216U1 (en) * | 2010-03-16 | 2015-06-15 | Knobel Alex | Apparatus and method for the continuous preparation of masses and regrind |
EP2471642A1 (en) * | 2010-12-30 | 2012-07-04 | Mufit Caglayan | Micronizing apparatus and method for micronizing of vulcanized elastomeric materials |
CN106732911A (en) * | 2017-03-14 | 2017-05-31 | 贵州大学 | A kind of taper ore mill |
Also Published As
Publication number | Publication date |
---|---|
EP0153754A3 (en) | 1986-08-06 |
YU28885A (en) | 1987-10-31 |
ES540747A0 (en) | 1985-12-01 |
FI850701A0 (en) | 1985-02-20 |
BG39663A1 (en) | 1986-08-29 |
JPS61458A (en) | 1986-01-06 |
HUT36399A (en) | 1985-09-30 |
NO850770L (en) | 1985-08-29 |
AU3928985A (en) | 1985-10-31 |
FI850701L (en) | 1985-08-29 |
ES8602444A1 (en) | 1985-12-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0628350B1 (en) | Device and method for comminuting and mixing material | |
DE3883437T2 (en) | Method and device for producing cutting edges. | |
EP0135568B1 (en) | Fine grinding installation for laboratory experiments | |
DE4019035A1 (en) | GRINDING DEVICE | |
DE4338903A1 (en) | Shredding machine and device for adjusting the gap of such a shredding machine | |
EP0153754A2 (en) | Grinding device for hard material | |
DE102006052904B4 (en) | Arrangement for grinding electrodes | |
DE10243210B3 (en) | Device for processing welding electrodes has a grinding plate driven by a shaft and rotating in a housing which is placed flush on another housing | |
DE4319702C2 (en) | Impact crusher | |
EP0221377A2 (en) | Method of finely grinding mineral material and device for carrying out the method | |
DE2519848C2 (en) | Hand mill for making flours from vegetable products | |
DE10053946C2 (en) | Device for mixing, grinding, drying and coating of various materials in the fineness range of 500 mum and below, in particular impact mill | |
DE10114957C1 (en) | Scraper rake, for screen disc cleaning device, has several adjustable tines fitting in tubular rake bar and swiveling about longitudinal axis | |
DE2606485C2 (en) | Disc crusher for crushing hard and abrasive materials | |
DE19848233A1 (en) | Gas-powered shredding machine with a rotating beater wheel system, in particular knife ring cutter | |
DE102007060072B4 (en) | Whirlwind Mill | |
DE3800843A1 (en) | Turbo air classifier | |
DD202195A5 (en) | MATERIAL SORTING MACHINE | |
EP1207010A2 (en) | Grinding machine | |
EP0978317A1 (en) | Air-swept crushing machine with rotary impact rotor | |
DE10018005A1 (en) | Method and device for reducing splinter material to powder feeds material to be processed through an inlet in an external wall into a processing chamber for shredding by a rotor. | |
DE20216056U1 (en) | Device for comminuting feed material | |
DE2814778B2 (en) | Shredding machine for bulk materials | |
DE4219090A1 (en) | Device for breaking up chips produced by metal machining - incorporating grinding discs with adjustable shear groove width | |
DE8901794U1 (en) | Device for crushing steel or metal chips |
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): AT BE CH DE FR GB 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 DE FR GB IT LI LU NL SE |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19870207 |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: DRAKALIISKI, BORIS YORDANOV Inventor name: BAGAROV, STEFAN TODOROV Inventor name: GENEV, IVAN VASSILEV |