DE29606424U1 - Mill for grinding food, luxury foods and for chemical, pharmaceutical and mineral substances - Google Patents
Mill for grinding food, luxury foods and for chemical, pharmaceutical and mineral substancesInfo
- Publication number
- DE29606424U1 DE29606424U1 DE29606424U DE29606424U DE29606424U1 DE 29606424 U1 DE29606424 U1 DE 29606424U1 DE 29606424 U DE29606424 U DE 29606424U DE 29606424 U DE29606424 U DE 29606424U DE 29606424 U1 DE29606424 U1 DE 29606424U1
- Authority
- DE
- Germany
- Prior art keywords
- section
- grinding
- grinding tools
- cross
- rotor
- 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
Links
- 239000000126 substance Substances 0.000 title claims description 8
- 229910052500 inorganic mineral Inorganic materials 0.000 title claims description 3
- 239000011707 mineral Substances 0.000 title claims description 3
- 235000013305 food Nutrition 0.000 title description 3
- 229910010293 ceramic material Inorganic materials 0.000 claims description 8
- 244000299461 Theobroma cacao Species 0.000 description 2
- 235000009470 Theobroma cacao Nutrition 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 244000046052 Phaseolus vulgaris Species 0.000 description 1
- 235000010627 Phaseolus vulgaris Nutrition 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 1
- 239000010428 baryte Substances 0.000 description 1
- 229910052601 baryte Inorganic materials 0.000 description 1
- 235000013361 beverage Nutrition 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 238000005552 hardfacing Methods 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052575 non-oxide ceramic Inorganic materials 0.000 description 1
- 239000011225 non-oxide ceramic Substances 0.000 description 1
- 229910052574 oxide ceramic Inorganic materials 0.000 description 1
- 239000011224 oxide ceramic Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 235000000346 sugar Nutrition 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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
- B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
- B02C13/14—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices
- B02C13/18—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with beaters rigidly connected to the rotor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
- B02C13/26—Details
- B02C13/28—Shape or construction of beater elements
- B02C13/2804—Shape or construction of beater elements the beater elements being rigidly connected to the rotor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
- B02C13/14—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices
- B02C2013/145—Disintegrating by mills having rotary beater elements ; Hammer mills with vertical rotor shaft, e.g. combined with sifting devices with fast rotating vanes generating vortexes effecting material on material impact
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Disintegrating Or Milling (AREA)
- Coloring Foods And Improving Nutritive Qualities (AREA)
- Medicinal Preparation (AREA)
- Crushing And Grinding (AREA)
- Crushing And Pulverization Processes (AREA)
Description
Mühle zum Mahlen von Nahrungsmitteln. Genußmitteln sowie für chemische, pharmazeutische und mineralische Stoffe. Mill for grinding foodstuffs, beverages, chemical, pharmaceutical and mineral substances .
Die Erfindung betrifft eine Mühle nach dem Oberbegriff des Anspruches 1.The invention relates to a mill according to the preamble of claim 1.
Derartige Mühlen sind in den unterschiedlichsten Bauformen bekannt. Diese Mühlen werden eingesetzt, um Kakaokerne und andere Nahrungsmittel fein und feinst zu vermählen. Diese Mühlen werden aber auch in der chemischen und pharmazeuti sehen Industrie zum Mahlen von z. B. Gips, Holzflocken, Schwerspat, Kalkstein, Kaolin und Farbpigmenten eingesetzt. In der Nahrungsmittelindustrie werden neben Kakao, Zucker, Milchpulver, Reis sowie Gemische aus diesen Stoffen und andere vermählen.Such mills are known in a wide variety of designs. These mills are used to grind cocoa beans and other foodstuffs finely and very finely. These mills are also used in the chemical and pharmaceutical industries to grind gypsum, wood flakes, barite, limestone, kaolin and color pigments, for example. In the food industry, cocoa, sugar, milk powder, rice and mixtures of these substances and others are ground.
Die Mahlwerkzeuge, die mit dem Stator den Mahlspalt bilden, sind aus legierten Stählen mit oder ohne Aufpanzerung, aus Hartguß oder Sintermetall hergestellt. Sie sind auswechselbar, da sie verschleißen.The grinding tools, which form the grinding gap with the stator, are made of alloyed steels with or without hardfacing, of chilled cast iron or sintered metal. They are replaceable as they wear out.
Bisher konnten nur Produkte mit derartigen Mühlen bis zu einer Härte von 3-3,5 Mohs verkleinert werden. Hierdurch war das Einsatzgebiet der Mühlen beschränkt und es trat ein entsprechendUntil now, only products with such mills could be reduced to a hardness of 3-3.5 Mohs. This limited the area of application of the mills and resulted in a corresponding
hoher Verschleiß auf. Der Erfindung liegt nun die Aufgabe zugrunde, eine Mühle der eingangs genannten Art zu schaffen, die zur Zerkleinerung von Produkten größerer Härte bis zu 6 Mohs einsatzbar ist.high wear. The invention is based on the object of creating a mill of the type mentioned above, which can be used for crushing products of greater hardness up to 6 Mohs.
Diese Aufgabe wird grundsätzlich durch das Kennzeichen des Anspruches 1 gelöst.This problem is basically solved by the characterising part of claim 1.
Dadurch, daß die Mahlwerkzeuge aus einem keramischen Werkstoff bestehen, können sehr viel härtere Produkte gemahlen werden, ohne daß es zu einem nichtakzeptablen Verschleiß kommt. Diese keramischen Werkstoffe weisen eine Härte von 8-9,8 Mohs auf.Because the grinding tools are made of a ceramic material, much harder products can be ground without unacceptable wear occurring. These ceramic materials have a hardness of 8-9.8 Mohs.
Die verwendeten keramischen Werkstoffe ob nun Oxid-Keramik oder Nichtoxid-Keramik oder Misch-Keramik sind chemisch und mechanisch beständig. Es wird das Mahlgut nicht in irgendeiner Weise chemisch beeinflußt.The ceramic materials used, whether oxide ceramic, non-oxide ceramic or mixed ceramic, are chemically and mechanically resistant. The ground material is not chemically influenced in any way.
Dadurch daß die Mahlwerkzeuge nicht mehr durch Schrauben oder dergleichen, sondern durch einfaches Einstecken in entsprechend gestaltete Schlitze befestigt werden, ist die Befestigung einfach, ihre Formgebung ist unkompliziert und sie lassen sich leicht auswechseln. Ein Auswuchten des Rotors nach dem Auswechseln der Mahlwerkzeuge ist nicht mehr erforderlich, da diese keramischen Werkstoffe ein geringes spezifisches Gewicht haben.Because the grinding tools are no longer attached using screws or the like, but simply by inserting them into appropriately designed slots, they are easy to attach, their shape is uncomplicated and they can be easily replaced. Balancing the rotor after replacing the grinding tools is no longer necessary, as these ceramic materials have a low specific weight.
Besonders vorteilhaft sind die Mahlwerkzeuge so gestaltet, wie in den Unteransprüchen angegeben. Wenn der Querschnitt symetrisch ist mit einem verdickten Abschnitt, und die Halteschlitze in dem Rotor entsprechend gestaltet werden, dann werden die Mahlleisten einfach in diese Halteschlitze im wesentlichen senkrecht zur Drehrichtung des Rotor gesteckt und durch denThe grinding tools are particularly advantageously designed as specified in the subclaims. If the cross section is symmetrical with a thickened section, and the retaining slots in the rotor are designed accordingly, then the grinding bars are simply inserted into these retaining slots essentially perpendicular to the direction of rotation of the rotor and are pushed through the
dickeren Abschnitt in dem entsprechend dickeren Schlitzabschnitt formschlüssig gehalten. Wenn ein Auswechseln erforderlich ist, werden sie einfach herausgezogen und wieder eingesteckt. Die formschlüssige Gestaltung hält die Mahlwerkzeuge sicher auch bei hoher Geschwindigkeit des Rotors.thicker section is held in a form-fitting manner in the correspondingly thicker slotted section. If replacement is required, they are simply pulled out and reinserted. The form-fitting design holds the grinding tools securely even at high rotor speeds.
Die symetrische Ausbildung ob nun so wie in den Ansprüchen 4 und 5 angegeben oder anders geformt, beispielsweise dreieckig, rautenförmig oder dergleichen hat den Vorteil, daß nicht nur der geforderte Formschluß sichergestellt ist, sondern daß auch an einem Mahlwerkzeug mehrere beispielsweise vier Schlagkanten zur Verfügung stehen, die nacheinander zum Einsatz gebracht werden können.The symmetrical design, whether as specified in claims 4 and 5 or shaped differently, for example triangular, diamond-shaped or the like, has the advantage that not only is the required form-fitting connection ensured, but also that several, for example four, striking edges are available on a grinding tool, which can be used one after the other.
Im Folgenden wird die Erfindung unter Hinweis auf die Zeichnung anhand eines Ausführungsbeispieles näher erklärt. Es zeigt:The invention is explained in more detail below with reference to an embodiment example and the drawing. It shows:
Figur 1: einen Querschnitt durch eine Seite eines Rotors; der nicht gezeigte Stator begrenzt diesen Rotor in üblicher Weise;Figure 1: a cross-section through one side of a rotor; the stator, not shown, limits this rotor in the usual way;
Figur 2: eine Ansicht des Rotors der Figur 1 von oben;Figure 2: a view of the rotor of Figure 1 from above;
Figur 3: eine Seitenansicht einer Ausführungsform eines Mahlwerkzeuges aus keramischen Werkstoff; undFigure 3: a side view of an embodiment of a grinding tool made of ceramic material; and
Figur 4: eine Draufsicht auf das Mahlwerkzeug der Figur 3.Figure 4: a top view of the grinding tool of Figure 3.
In den Figuren 1 und 2 ist wie gesagt nur ein Rotor im Ausschnitt dargestellt. Dieser Rotor läuft in einem nichtgezeigten Stator und wird durch einen Motor angetrieben. Die Verbindung zur Rotorwelle, deren Aufnahme mit 4 bezeichnet ist, erfolgt direkt oder indirekt.As mentioned, only a section of a rotor is shown in Figures 1 and 2. This rotor runs in a stator (not shown) and is driven by a motor. The connection to the rotor shaft, whose mount is marked 4, is made directly or indirectly.
Der Rotor 1 wird durch mehrere übereinanderliegende Werkzeughalteringe oder -scheiben 2 gebildet. In diesen WerkzeughalteringenThe rotor 1 is formed by several tool holder rings or disks 2 lying one above the other. In these tool holder rings
sind übereinander, d. h. im Wesentlichen senkrecht zur Drehachse Halteschlitze 6 ausgebildet, deren Querschnitt der Querschnittsform der verwendeten Mahlwerkzeuge 3 entspricht. In diese Halteschlitze werden mehrere Mahlwerkzeuge 3 nacheinander eingesteckt, so daß sie übereinanderliegen.Holding slots 6 are formed one above the other, i.e. essentially perpendicular to the axis of rotation, the cross-section of which corresponds to the cross-sectional shape of the grinding tools 3 used. Several grinding tools 3 are inserted into these holding slots one after the other, so that they lie one above the other.
Die Mahlwerkzeuge werden formschlüssig gehalten. Hierzu weisen sie im Querschnitt einen dickeren Abschnitt 5 auf, der bei der dargestellten Ausführungsform (Figuren 3 und 4) kreisförmig ist. Entsprechend geformt sind die Halteschlitze 6.The grinding tools are held in a form-fitting manner. For this purpose, they have a thicker section 5 in cross-section, which is circular in the embodiment shown (Figures 3 and 4). The holding slots 6 are shaped accordingly.
Beim Betrachten der Figuren 3 und 4 wird deutlich, daß die Mahlwerkzeuge zweifach symmetrisch in Bezug auf ihren Querschnitt ausgebildet sind. Sie weisen vier Schlagkanten 7 auf. Je nach dem wie das Mahlwerkzeug 3 in die Halteschlitze 6 gesteckt wird, kann eine der vier Kanten zum Einsatz kommen. Das Mahlwerkzeug weist also eine hohe Lebensdauer auf, da es einmal aus sehr hartem Werkstoff nämlich keramischem Material besteht, und zum anderen vier Schlagkanten hat, die nacheinander zum Einsatz kommen können.When looking at Figures 3 and 4, it becomes clear that the grinding tools are doubly symmetrical in terms of their cross-section. They have four striking edges 7. Depending on how the grinding tool 3 is inserted into the holding slots 6, one of the four edges can be used. The grinding tool therefore has a long service life because it is made of a very hard material, namely ceramic material, and because it has four striking edges that can be used one after the other.
Anstelle der in Figur 4 gezeigten Querschnittsform sind auch andere Querschnittsformen wie die Rautenform, Dreiecksform und andere Formen denkbar.Instead of the cross-sectional shape shown in Figure 4, other cross-sectional shapes such as diamond shape, triangular shape and other shapes are also conceivable.
Anstelle der gezeichneten Bauform eines konischen Rotors sind auch andere Bauformen mit zylindrischem Rotor, z.B. "Turbo-Mühlen" denkbar, bei denen mehrere Mahlwerkzeuge dann nebeneinander liegen.Instead of the drawn design of a conical rotor, other designs with a cylindrical rotor are also conceivable, e.g. "turbo mills", in which several grinding tools are then located next to each other.
Claims (5)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE29606424U DE29606424U1 (en) | 1996-04-06 | 1996-04-06 | Mill for grinding food, luxury foods and for chemical, pharmaceutical and mineral substances |
| DE19649338A DE19649338A1 (en) | 1996-04-06 | 1996-11-28 | Grinding mill for food, chemical, pharmaceutical and mineral substances |
| JP8784697A JPH1028888A (en) | 1996-04-06 | 1997-04-07 | Mills for grinding food, luxury goods, chemicals, pharmaceuticals and minerals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE29606424U DE29606424U1 (en) | 1996-04-06 | 1996-04-06 | Mill for grinding food, luxury foods and for chemical, pharmaceutical and mineral substances |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE29606424U1 true DE29606424U1 (en) | 1997-07-31 |
Family
ID=8022306
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE29606424U Expired - Lifetime DE29606424U1 (en) | 1996-04-06 | 1996-04-06 | Mill for grinding food, luxury foods and for chemical, pharmaceutical and mineral substances |
| DE19649338A Withdrawn DE19649338A1 (en) | 1996-04-06 | 1996-11-28 | Grinding mill for food, chemical, pharmaceutical and mineral substances |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19649338A Withdrawn DE19649338A1 (en) | 1996-04-06 | 1996-11-28 | Grinding mill for food, chemical, pharmaceutical and mineral substances |
Country Status (1)
| Country | Link |
|---|---|
| DE (2) | DE29606424U1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19844377A1 (en) * | 1998-09-28 | 2000-03-30 | Jackering Altenburger Masch | Grinding step for mill with centrifugal plate has grinding plates detachably fixed and hung from undercut recesses in centrifugal plate to retain radial position under centrifugal force |
| DE10053946A1 (en) * | 2000-09-29 | 2002-04-18 | Noll Gmbh Ulf | Fine-grinding mill rotor is vee-grooved inside for exchangeable foot-adapted grinding tools which alternate with recesses or projections for exchangeable grinding bars using metal or ceramic tooling. |
| EP1579915A1 (en) | 2004-03-24 | 2005-09-28 | HOSOKAWA ALPINE Aktiengesellschaft | Mill with replacable beater strip |
| DE102010009894A1 (en) | 2010-03-02 | 2011-09-08 | Rolf Schatz | Rotor grinding tool for use in rotor impact mills for fine grinding, drying or grind drying, coating or deagglomeration of wet or dry material, has integrated turbo wheel-air classifier |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009020714A1 (en) | 2009-05-11 | 2010-11-18 | Pallmann Maschinenfabrik Gmbh & Co Kg | Device for processing feedstock |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT351909B (en) * | 1978-05-02 | 1979-08-27 | Voest Ag | IMPACT MILL FOR CRUSHING ROCK OR DGL. |
| DD220775A1 (en) * | 1984-01-27 | 1985-04-10 | Eisengiesserei U Maschinenfabr | GRINDING MILLS FOR GRANULATING PRE-COMPRESSED MEDIA, ESPECIALLY FOR BROWN COAL |
| CH651225A5 (en) * | 1980-04-09 | 1985-09-13 | Bhs Bayerische Berg | Horizontal impact crusher |
| DE8632777U1 (en) * | 1986-12-06 | 1987-02-12 | DESI Gesellschaft für Desintegrations-Technologie und Verfahrenstechnik mbH & Co KG, 4500 Osnabrück | Impact mill, especially disintegrator |
| DE3811910A1 (en) * | 1988-04-09 | 1989-10-19 | Mahltechnik Goergens Gmbh | Mill and method for simultaneously grinding and drying a damp product |
| DE4419510A1 (en) * | 1994-06-03 | 1995-12-07 | Hosokawa Alpine Ag | Impact mill hammer unit with impact pin |
-
1996
- 1996-04-06 DE DE29606424U patent/DE29606424U1/en not_active Expired - Lifetime
- 1996-11-28 DE DE19649338A patent/DE19649338A1/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT351909B (en) * | 1978-05-02 | 1979-08-27 | Voest Ag | IMPACT MILL FOR CRUSHING ROCK OR DGL. |
| CH651225A5 (en) * | 1980-04-09 | 1985-09-13 | Bhs Bayerische Berg | Horizontal impact crusher |
| DD220775A1 (en) * | 1984-01-27 | 1985-04-10 | Eisengiesserei U Maschinenfabr | GRINDING MILLS FOR GRANULATING PRE-COMPRESSED MEDIA, ESPECIALLY FOR BROWN COAL |
| DE8632777U1 (en) * | 1986-12-06 | 1987-02-12 | DESI Gesellschaft für Desintegrations-Technologie und Verfahrenstechnik mbH & Co KG, 4500 Osnabrück | Impact mill, especially disintegrator |
| DE3811910A1 (en) * | 1988-04-09 | 1989-10-19 | Mahltechnik Goergens Gmbh | Mill and method for simultaneously grinding and drying a damp product |
| DE4419510A1 (en) * | 1994-06-03 | 1995-12-07 | Hosokawa Alpine Ag | Impact mill hammer unit with impact pin |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19844377A1 (en) * | 1998-09-28 | 2000-03-30 | Jackering Altenburger Masch | Grinding step for mill with centrifugal plate has grinding plates detachably fixed and hung from undercut recesses in centrifugal plate to retain radial position under centrifugal force |
| DE10053946A1 (en) * | 2000-09-29 | 2002-04-18 | Noll Gmbh Ulf | Fine-grinding mill rotor is vee-grooved inside for exchangeable foot-adapted grinding tools which alternate with recesses or projections for exchangeable grinding bars using metal or ceramic tooling. |
| DE10053946C2 (en) * | 2000-09-29 | 2002-08-22 | Noll Gmbh Ulf | Device for mixing, grinding, drying and coating of various materials in the fineness range of 500 mum and below, in particular impact mill |
| EP1579915A1 (en) | 2004-03-24 | 2005-09-28 | HOSOKAWA ALPINE Aktiengesellschaft | Mill with replacable beater strip |
| DE102004014258C5 (en) * | 2004-03-24 | 2010-09-16 | Hosokawa Alpine Ag | Mill with interchangeable blow bars |
| DE102010009894A1 (en) | 2010-03-02 | 2011-09-08 | Rolf Schatz | Rotor grinding tool for use in rotor impact mills for fine grinding, drying or grind drying, coating or deagglomeration of wet or dry material, has integrated turbo wheel-air classifier |
Also Published As
| Publication number | Publication date |
|---|---|
| DE19649338A1 (en) | 1997-10-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R163 | Identified publications notified | ||
| R207 | Utility model specification |
Effective date: 19970911 |
|
| R081 | Change of applicant/patentee |
Owner name: BAUERMEISTER VERFAHRENSTECHNIK GMBH, DE Free format text: FORMER OWNER: GEBRUEDER BAUERMEISTER & CO VERFAHRENSTECHNIK GMBH & CO, 22844 NORDERSTEDT, DE Effective date: 19980514 |
|
| R150 | Utility model maintained after payment of first maintenance fee after three years |
Effective date: 19990427 |
|
| R151 | Utility model maintained after payment of second maintenance fee after six years |
Effective date: 20020429 |
|
| R152 | Utility model maintained after payment of third maintenance fee after eight years |
Effective date: 20040507 |
|
| R071 | Expiry of right |