EP0222933B1 - Mischvorrichtung mit Mischschnecke und konischem Behälter - Google Patents

Mischvorrichtung mit Mischschnecke und konischem Behälter Download PDF

Info

Publication number
EP0222933B1
EP0222933B1 EP85201905A EP85201905A EP0222933B1 EP 0222933 B1 EP0222933 B1 EP 0222933B1 EP 85201905 A EP85201905 A EP 85201905A EP 85201905 A EP85201905 A EP 85201905A EP 0222933 B1 EP0222933 B1 EP 0222933B1
Authority
EP
European Patent Office
Prior art keywords
mixing
vessel
plate
secured
mixing apparatus
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
EP85201905A
Other languages
English (en)
French (fr)
Other versions
EP0222933A1 (de
Inventor
Jan Willem Jolink
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.)
Hosokawa Micron Europe Bv Te Haarlem
Original Assignee
Isem BV
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 Isem BV filed Critical Isem BV
Priority to DE8585201905T priority Critical patent/DE3568141D1/de
Priority to AT85201905T priority patent/ATE40654T1/de
Priority to EP85201905A priority patent/EP0222933B1/de
Publication of EP0222933A1 publication Critical patent/EP0222933A1/de
Application granted granted Critical
Publication of EP0222933B1 publication Critical patent/EP0222933B1/de
Expired legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
    • B01F27/95—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with stirrers having planetary motion, i.e. rotating about their own axis and about a sun axis
    • B01F27/953—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with stirrers having planetary motion, i.e. rotating about their own axis and about a sun axis using only helical stirrers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/40—Mounting or supporting mixing devices or receptacles; Clamping or holding arrangements therefor
    • B01F35/41—Mounting or supporting stirrer shafts or stirrer units on receptacles
    • B01F35/412—Mounting or supporting stirrer shafts or stirrer units on receptacles by supporting both extremities of the shaft
    • B01F35/4121—Mounting or supporting stirrer shafts or stirrer units on receptacles by supporting both extremities of the shaft at the top and at the bottom of the receptacle, e.g. for performing a conical orbital movement about a vertical axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/30—Driving arrangements; Transmissions; Couplings; Brakes
    • B01F2035/35—Use of other general mechanical engineering elements in mixing devices
    • B01F2035/352—Bearings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/60—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis
    • B01F27/61—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis about an inclined axis

Definitions

  • the invention relates to a mixing apparatus having at least one mixing vessel with a conical side wall and vertical axis and having in this mixing vessel a mixing screw which may be driven from above only, which mixing screw is simultaneously rotatable around its axis and around the mixing vessel axis which extends under an angle therewith, the mixing screw shaft being journalled adjacent to its lower end in a rotatable bearing, provided in a housing portion of the mixing apparatus below the vessel bottom, the screw shaft extending through an opening in the vessel bottom and is sealed at the position of this opening by means of a sealing element shaped as a spherical part.
  • Such mixing apparatus are known, e.g. from the NL-C-162.850. According to that publication the mixing screw shaft is journalled below the vessel bottom by means of the rotary bearing and a universal joint in order to avoid contamination of the bearings by the material to be mixed.
  • a spherical segment with stuffing box at the position of the vessel bottom and a sealing element relative to the screw shaft serve for permitting the passage of the screw shaft through the bottom without loss of contents of the vessel.
  • the invention aims at removing this disadvantage.
  • the lower end of the mixing screw shaft carries a hinge pin with which a vertical connection piece to a vertical inner bearing sleeve of the rotary bearing is articulated, said hinge pin being situated at the position of the opening in the vessel bottom
  • the lower housing portion of the mixing apparatus comprising an annular horizontal plate which is secured spaced from the vessel bottom through a plurality of vertical columns to said bottom, a second plate, being in engagement with the lower side of said plate, being removably connected therewith, an outer bearing sleeve of the rotary bearing being secured to said second plate.
  • the packing around the sealing element may be easily reached, as well at the lower side of, and also from the lateral side between, the column fixtures.
  • the universal joint may be omitted. Due to the fixation through the columns and the absence of the moving universal joint it will now also being visible at an earlier stage when the bottom seal leaks than with the known structure in which material could accumulate within the spherical segment, namely when it is pasty, and then yet could penetrate into the rotary bearing.
  • the connecting piece is secured to the inner bearing sleeve through a central threaded bolt, which is inserted from below through said sleeve.
  • the head of the central bolt is of such width in radial direction that through it fasteners for clamping the bearing sleeve to the connecting piece may be screwed.
  • a so-called quick service connection of both housing plates is obtained if the second plate of the lower mixer housing part is connected at a point of its circumference through a hinge connection to a superimposed point of the circumference of the first plate, eye bolts being further, circumferentially spaced, secured to one of the plates for releasably clamping the second to the first plate.
  • the sphere centre of the sphere part shaped sealing element is situated in the axis of the hinge pin and is this element substantially rotationally symmetrical with reference to that centre and releasably connected to the screw.
  • the screw is fixedly connected with the shaft which rotates relative to the sealing element.
  • the screw rotates relative to the shaft and the sphere may be secured to the screw, since the sphere centre is in the hinge pin and the sphere radius may consequently be small.
  • the spherical surface may then also contain a larger part of the theoretical sphere, on which it is based, than the known sphere segments and yet has sufficient sealing surface. Due to the smaller diameter rotation together with the screw (e.g. 70 rpm) is permitted.
  • the large diameter of the known segment (caused in that the centre must be situated in the axis of the universal joint) would produce excessive heat generation and quick wear of the packing.
  • the small diameter results in less space occupied by the sealing element so that it is more compact.
  • the sealing means cooperating with the sphere part shaped sealing element may be a stuffing box or a fluid (air) seal.
  • the vessel bottom has a ring part which is releasably secured in the bottom around the sealing element.
  • the mixing vessel has a bottom 2.
  • a mixing screw 3 extends into the mixing vessel, said screw being drivable in a known manner (not further shown) at the upper end around its axis with a number of revolutions of e.g. 70 rpm and also, through a swinging arm (not shown), in the position parallel to the conical wall 1 in a rotary movement along said wall and around the mixing vessel axis which includes an angle with the screw.
  • the screw 3 is rotatable around a non-rotating screw shaft 6 through axial slide- thrust bearings 4 and a radial roller bearing 5.
  • the screw shaft 6 has a clevis-shaped portion, which engages around a vertical connecting piece 7, a hinge pin 8 being provided in transverse direction through said parts.
  • the connecting piece 7 is secured, in a manner further to be described, to an inner bearing sleeve 9 of a vertical rotary bearing which in the embodiment shown is constituted by two conical roller bearings 10 which are radially enclosed by an outer bearing sleeve 11 and axially by a closure ring 13, secured by bolts 12.
  • An annular horizontal housing plate 15 is secured to the vessel bottom through columns 14 which are equally spaced around the circumference, e.g. pipe lengths, which are welded to the vessel bottom 2.
  • a second housing plate 16 is releasably secured against the under side of the first housing plate 15 and said second plate is welded by radial connecting strips 17 to the outer bearing sleeve 11 of the rotary bearing.
  • the second plate 16 is connected to the first plate 15 by means of a hinge 18 having a horizontal hinge pin 19.
  • Spaced around its circumference pins 20 for eye bolts 21 are provided on the lower plate 16, said bolts being pivotable around the pins 20 and the bolt shank of each of which may be placed vertically, as seen in figure 1, through radial recesses extending from the outer circumference of the plates 15, 16, whereafter the shanks may be clamped against the upper side of the plate 15 through a nut 22 and a washer 23, whereby both plates 15, 16 may be fixedly mutually clamped.
  • the connecting piece 7 is secured to the inner bearing sleeve 9 through a central bolt 24, which extends from below through the closure ring 13 and the sleeve 9 and is screwed into a threaded opening at the lower end of the connecting piece 7.
  • a widened head 25 is connected to the bolt head through a transverse pin 26, extending radially through the widened head and the bolt head. Stud bolts 27, four in the embodiment shown, are screwed into corresponding threaded apertures of the widened head 25.
  • the connection may be tensioned by screwing home the studs 27 which are in engagement with the lower side of the closure ring 16 and thereby tension the bolt 24 through the head 25. Thereby it is prevented that when screwing the bolts 24 in or out, the screw thread thereof or of the corresponding opening is damaged.
  • roller bearings 10 are sealed through a cup ring seal 28 at the lower side of the outer bearing sleeve 11.
  • the rotary bearing is closed at its lower end by a cover 29, which is secured to the sleeve 11 through bolts 30.
  • a sphere part shaped sealing element 32 is secured to the lower end of the screw through bolts 31, around the lower end of the screw shaft 6, at the position of the hinge pin 8.
  • Said sphere part shaped element contains a large portion of a sphere and is provided in a corresponding opening in a ring 33, which is secured in the vessel bottom 2 through bolts 34.
  • a packing 35 with packing gland 36 and press bolts 37 may serve, such as shown in the left portion of figure 1.
  • the sealing means may also be constituted by a fluid or aerodynamic seal, constituted by two vertically spaced discs 38, which are mutually and relative to the sphere part element 35 biased by a spring 39 engaged around a bolt 40 secured in the upper element 38, a plurality of which are provided spaced around the circumference. Through one or more apertures 41 air having a predetermined pressure may be supplied between the elements 38.
  • the bottom cover 29 is removed by removing the bolts 30, whereby the bolts 27 may be released so that the tension in the connection between the bolt 24 and the connection piece 7 is removed. Thereafter the bolt 24 may be unscrewed by hand and may be taken out. Subsequently the nuts 22 of the eye bolts 21 are released so far that the bolts 21 may be pivoted around the pivot pins 20.
  • the second or lower plate 16 of the housing Prior to pivoting the last bolt, the second or lower plate 16 of the housing is retained in position through the handle 17' and thereafter the lower plate may be pivoted around the hinge pin 19 together with the rotary bearing 9 -11 secured therein. Then the plate 16 may be released and is vertically suspended. If necessary, replacement of the roller bearings 10 or of the seals for the rotary bearing is now easy.
  • the packing gland 36 is now accessible from the under side through the central opening in the annular first or upper plate 15 of the housing, so that the bolts 37 thereof may be taken out, said bolts being also accessible from the side between the columns 14.
  • the packing 35 may be replaced.
  • the springs 39 may be removed from the bolts 40, whereafter the lower ring 38 may be removed and the 0-ring, provided thereon and not indicated by a reference number, may be replaced.
  • the sphere part element 32 may be released from the screw shaft 6 and removed through releasing the bolts 34, whereafter the ring 33 may be taken out.
  • Remounting may be established by taking the above mentioned steps in reverse order.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Accessories For Mixers (AREA)

Claims (8)

1. Mischer mit wenigstens einem kegeligen Mischbehälter mit kegliger Seitenwand und senkrechter Achse und innerhalb dieses Mischbehälters versehen mit einer Mischschnecke welche nur von der Oberseite, das heisst von der Seite des weitesten Teils des kegeligen Mischbehälters, antreibbar ist und gleichzeitig um ihre Achse und um die Mischbehälterachse rotierbar ist, von welchen die Schneckenachse einen Winkel mit der Mischbehälterachse einschliesst, die Mischschneckenachse in der Nähe ihres unteren Endes in einem Drehlager gelagert ist, welches in einem Gehäuseteil des Mischers unterhalb des Behälterbodens angeordnet ist, während die Schneckenachse sich durch eine Öffnung im Behälterboden erstreckt und an der Stelle dieser Öffnung mittels eines Dichtungsteils in Form eines Kugelteils abgedichtet ist, dadurch gekennzeichnet, dass das untere Ende der Mischschneckenachse (6) einen Gelenkbolzen (8) trägt, mit welchem ein senkrechter Verbindungsteil (7) mit einer senkrechten inneren Lagerbüchse (9) des Drehlagers gelenkig verbunden ist, welcher Gelenkbolzen (8) in der Höhe der Öffnung im Behälterboden (2) liegt, während der untere Mischergehäuseteil eine ringförmigewaagerechte Platte (15) aufweist, welche in einem Abstand vom Behälterboden (2) an diesem Boden mittels einer Anzahl senkrechter Säulen (14) befestigt ist und eine zweite Platte (16), welche die Unterseite der Platte (15) berührt, lösbar an erstgenannter befestigt ist, und eine äussere Lagerbüchse (11) des Drehlagers an der zweiten Platte befestigt ist.
2. Mischer nach Anspruch 1, dadurch gekennzeichnet, dass der Verbindungsteil (7) an der inneren Lagerbüchse (9) mittels eines zentralen Schraubbolzens (24) befestigt ist, welcher sich von unten durch die Büchse hindurch erstreckt.
3. Mischer nach Anspruch 2, dadurch gekennzeichnet, dass der Kopf (25) des zentralen Bolzens (24) in radialer Richtung derart erweitert ist, dass Klemmschrauben (27) zur Festklemmung der Lagerbüchse (9) am Verbindungsteil (7) durch diesen Kopf hindurch schraubbar sind.
4. Mischer nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die zweite Platte (16) des unteren Mischergehäuseteils in einem Punkt ihres Umfangs mittels einer Gelenkverbindung (18, 19) verbunden ist mit einem darüber liegenden Punkt des Umfangs der ersten Platte (15), während weitere Augenbolzen (21) an einer der Platten befestigt sind, gleichmässig um ihren Umfang verteilt, zur lösbaren Festklemmung der zweiten Platte (16) an der ersten Platte (15).
5. Mischer nach Anspruch 1, dadurch gekennzeichnet, dass der Kugelmittelpunkt des kugelteilförmigen Dichtungselements (32) in der Achse des Gelenkbolzens (8) liegt, welches Element in der Hauptsache umdrehungssymmetrisch gegenüber diesem Mittelpunkt und lösbar mit der Schnecke (3) verbunden ist.
6. Mischer nach Anspruch 5, dadurch gekennzeichnet, dass eine Stopfbüchse (35, 36) um das Dichtungselement (32) im Behälterboden (2) herum vorgesehen ist, welche Stopfbüchse einen Packungsdrücker (36) aufweist, welcher unterhalb des Bodens liegt.
7. Mischer nach Anspruch 5, dadurch gekennzeichnet, dass eine Mediumsdichtung (38, 39), mit unterhalb des Bodens liegenden Vorspannorganen (39, 40), um das Dichtungselement (32) herum im Behälterboden (2) vorgesehen ist.
8. Mischer nach einem der Ansprüche 5-7, dadurch gekennzeichnet, dass der Behälterboden (2) einen Ringteil (33) aufweist, welcher lösbar darin um das Dichtungselement (32) herum befestigt ist.
EP85201905A 1985-11-18 1985-11-18 Mischvorrichtung mit Mischschnecke und konischem Behälter Expired EP0222933B1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE8585201905T DE3568141D1 (en) 1985-11-18 1985-11-18 Mixing apparatus having a mixing screw and a conical mixing vessel
AT85201905T ATE40654T1 (de) 1985-11-18 1985-11-18 Mischvorrichtung mit mischschnecke und konischem behaelter.
EP85201905A EP0222933B1 (de) 1985-11-18 1985-11-18 Mischvorrichtung mit Mischschnecke und konischem Behälter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP85201905A EP0222933B1 (de) 1985-11-18 1985-11-18 Mischvorrichtung mit Mischschnecke und konischem Behälter

Publications (2)

Publication Number Publication Date
EP0222933A1 EP0222933A1 (de) 1987-05-27
EP0222933B1 true EP0222933B1 (de) 1989-02-08

Family

ID=8194084

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85201905A Expired EP0222933B1 (de) 1985-11-18 1985-11-18 Mischvorrichtung mit Mischschnecke und konischem Behälter

Country Status (3)

Country Link
EP (1) EP0222933B1 (de)
AT (1) ATE40654T1 (de)
DE (1) DE3568141D1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU621054B2 (en) * 1987-06-25 1992-03-05 Dundee Trading Company Pty. Ltd. Improved mixing machine
GB2206813B (en) * 1987-06-25 1991-09-25 Dundee Trading Company Pty Ltd Food processing apparatus
US20020181325A1 (en) 2001-06-05 2002-12-05 Engel David J Mixer seal and bearing apparatus and method
US6715913B2 (en) * 2002-03-29 2004-04-06 Spx Corporation Shaft bearing support method and apparatus

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1906016A1 (de) * 1969-02-07 1970-08-20 Gewerk Eisenhuette Westfalia Verfahren und Vorrichtung zur Durchfuehrung des Verfahrens zum Auswechseln von Gleitringdichtungen an Ruehrerwellen
BE757618A (fr) * 1969-11-07 1971-04-01 Fries Sohn Fa J S Articulation a rotule munie d'un accouplement interieur a croisillon
DD110768A1 (de) * 1974-04-08 1975-01-12
DE3245935A1 (de) * 1982-12-11 1984-06-14 Sen Alfred Bolz Konus-schneckenmischer

Also Published As

Publication number Publication date
DE3568141D1 (en) 1989-03-16
ATE40654T1 (de) 1989-02-15
EP0222933A1 (de) 1987-05-27

Similar Documents

Publication Publication Date Title
US2627171A (en) Agitator drive assembly
EP0222933B1 (de) Mischvorrichtung mit Mischschnecke und konischem Behälter
US4535656A (en) Integral tensioner assembly for tensioning, inserting and removing a stud
JPS6355638B2 (de)
US4095856A (en) Adjustable bottom step bearing
CA2205891C (en) Blender construction
US4588301A (en) Conical screw mixer
GB2286134A (en) A rotating mixing tool with removable blades
JPS62241533A (ja) ミキサ駆動装置
US5094540A (en) Sealed mixer paddle shaft assembly
JPH02115051A (ja) 破砕機を内蔵した流動物取扱い装置
US3976252A (en) Chopping machine
EP0791395B1 (de) Refiner und Verfahren zur Befestigung seiner Scheiben
JPH0233412B2 (de)
CA1238901A (en) Conical screw mixer
JPH0378518B2 (de)
CN1072520C (zh) 自调节稳态轴承支撑装置
GB2260113A (en) Shotcrete gun
US4498339A (en) Method for inspecting interior of a pressure vessel having replaceable plug assembly
US7681819B2 (en) Disc adjustment system for chipper apparatus
RU2214875C2 (ru) Устройство для фиксации подшипникового узла на шейке валка в прокатном стане (варианты)
US5505392A (en) Mill having a rotary drive coupling
CN218522962U (zh) 一种鼓形滤网刹车装置
US5200076A (en) Easily disassembled rotor system
US4449330A (en) Resurfacing process and tool for installing catridge-type

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 CH DE FR GB IT LI LU NL SE

17P Request for examination filed

Effective date: 19871028

17Q First examination report despatched

Effective date: 19880603

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

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

REF Corresponds to:

Ref document number: 40654

Country of ref document: AT

Date of ref document: 19890215

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3568141

Country of ref document: DE

Date of ref document: 19890316

ET Fr: translation filed
ITF It: translation for a ep patent filed

Owner name: MODIANO & ASSOCIATI S.R.L.

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
ITTA It: last paid annual fee
ITPR It: changes in ownership of a european patent

Owner name: FUSIONI;HOSOKAWA MICRON EUROPE B.V.

REG Reference to a national code

Ref country code: CH

Ref legal event code: PUE

Owner name: HOSOKAWA MICRON EUROPE B.V.

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732

REG Reference to a national code

Ref country code: FR

Ref legal event code: TP

NLS Nl: assignments of ep-patents

Owner name: HOSOKAWA MICRON EUROPE B.V. TE HAARLEM.

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

Ref country code: GB

Payment date: 19921118

Year of fee payment: 8

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

Ref country code: SE

Payment date: 19921119

Year of fee payment: 8

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

Ref country code: BE

Payment date: 19921125

Year of fee payment: 8

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

Ref country code: FR

Payment date: 19921127

Year of fee payment: 8

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

Ref country code: NL

Payment date: 19921130

Year of fee payment: 8

Ref country code: LU

Payment date: 19921130

Year of fee payment: 8

Ref country code: AT

Payment date: 19921130

Year of fee payment: 8

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

Ref country code: DE

Payment date: 19921224

Year of fee payment: 8

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

Ref country code: CH

Payment date: 19930224

Year of fee payment: 8

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

Ref country code: LU

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

Effective date: 19931118

Ref country code: GB

Effective date: 19931118

Ref country code: AT

Effective date: 19931118

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

Ref country code: SE

Effective date: 19931119

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

Ref country code: LI

Effective date: 19931130

Ref country code: CH

Effective date: 19931130

Ref country code: BE

Effective date: 19931130

BERE Be: lapsed

Owner name: HOSOKAWA MICRON EUROP B.V.

Effective date: 19931130

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

Ref country code: NL

Effective date: 19940601

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

Effective date: 19931118

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19940729

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

Ref country code: DE

Effective date: 19940802

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

EUG Se: european patent has lapsed

Ref document number: 85201905.8

Effective date: 19940610