DE2709127A1 - MIXER - Google Patents
MIXERInfo
- Publication number
- DE2709127A1 DE2709127A1 DE19772709127 DE2709127A DE2709127A1 DE 2709127 A1 DE2709127 A1 DE 2709127A1 DE 19772709127 DE19772709127 DE 19772709127 DE 2709127 A DE2709127 A DE 2709127A DE 2709127 A1 DE2709127 A1 DE 2709127A1
- Authority
- DE
- Germany
- Prior art keywords
- bearing
- mixer according
- mixing screw
- stage
- pin
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/12—Sliding-contact bearings for exclusively rotary movement characterised by features not related to the direction of the load
- F16C17/24—Sliding-contact bearings for exclusively rotary movement characterised by features not related to the direction of the load with devices affected by abnormal or undesired positions, e.g. for preventing overheating, for safety
- F16C17/243—Sliding-contact bearings for exclusively rotary movement characterised by features not related to the direction of the load with devices affected by abnormal or undesired positions, e.g. for preventing overheating, for safety related to temperature and heat, e.g. for preventing overheating
-
- 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
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C11/00—Pivots; Pivotal connections
- F16C11/04—Pivotal connections
- F16C11/06—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints
- F16C11/0619—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints the female part comprising a blind socket receiving the male part
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/10—Sliding-contact bearings for exclusively rotary movement for both radial and axial load
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/52—Bearings with rolling contact, for exclusively rotary movement with devices affected by abnormal or undesired conditions
- F16C19/525—Bearings with rolling contact, for exclusively rotary movement with devices affected by abnormal or undesired conditions related to temperature and heat, e.g. insulation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/54—Systems consisting of a plurality of bearings with rolling friction
- F16C19/545—Systems comprising at least one rolling bearing for radial load in combination with at least one rolling bearing for axial load
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Accessories For Mixers (AREA)
- Rolling Contact Bearings (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Mixers With Rotating Receptacles And Mixers With Vibration Mechanisms (AREA)
Description
Nautamix Patent AG, Zug (Schweiz) Nautamix Patent AG, Zug (Switzerland)
?. März 1977?. March 1977
Mischermixer
Die vorliegende Erfindung betrifft einen Mischer mit einem Mischgefäss und mindestens einer Mischschnecke, welche zum gleichzeitigen Drehen um ihre Achse und Abwälzen längs der Gefässinnenwand in einem am Boden des Gefässes und in der Achse der Mischschnecke angeordneten Lager gelagert ist.The present invention relates to a mixer having a Mixing vessel and at least one mixing screw, which for simultaneous rotation around its axis and rolling along the Inner wall of the vessel in one at the bottom of the vessel and in the Axis of the mixing screw arranged bearing is mounted.
Mischer der beschriebenen Art sind bereits bekannt. Eines der ungelösten Probleme bei diesen Mischern ist die Ueberwachung der Wärmeentwicklung im Lager der Mischschnecke. Wenn die Mischschnecke beim Mischen schwer mischbarer Materialien stark überlastet ist oder wenn das Lager verschmutzt ist, kann die Wärmeentwicklung so stark werden, dass die Mischschnecke im Lager festläuft und der Mischer unbrauchbar oder beschädigt wird.Mixers of the type described are already known. One of the unsolved problems with these mixers is monitoring the heat development in the bearing of the mixing screw. When the mixing screw is used when mixing materials that are difficult to mix is heavily overloaded or if the bearing is dirty, the heat development can be so strong that the mixing screw seizes in the warehouse and the mixer becomes unusable or damaged.
Es ist das Ziel der vorliegenden Erfindung, den beschriebenen Nachteil zu beheben und einen Mischer anzugeben, bei dem das Lager der Mischschnecke bei allen Betriebsbedingungen gegen Beschädigung durch Ueberhitzen geschützt ist.It is the aim of the present invention to remedy the described disadvantage and to provide a mixer in which the bearing of the mixing screw is protected against damage from overheating under all operating conditions.
Dieses Ziel wird erfindungsgemäss dadurch erreicht, dass imThis goal is achieved according to the invention in that in
709837/0740709837/0740
Lager für die Mischschnecke mindestens ein zum Messen unerwünschter Temperaturänderungen vorgesehener Temperaturfühler angeordnet ist.Bearing for the mixing screw at least one undesirable for measuring Temperature changes provided temperature sensor is arranged.
Mit dem neuen Mischer kann das Mischen rechtzeitig unterbrochen werden« wenn die Temperatur des Mischschneckenlagcrs über einen zulässigen Wert ansteigt.With the new mixer, mixing can be interrupted in good time when the temperature of the mixing screw bearing is reached rises above a permissible value.
Bei einer bevorzugten Ausführungsform des erfindungsgemässen Mischers ist das Lager als Kugelgelenk ausgebildet, und der mindestens eine Temperaturfühler ist in der Gelenkkugel angeordnet. Diese Ausführungsform kann für viele unterschiedliche Arten von Mischschnecken und von Lagern für Mischschnek- ken verwendet werden.In a preferred embodiment of the mixer according to the invention, the bearing is designed as a ball joint, and the at least one temperature sensor is arranged in the joint ball. This embodiment can be used for many different types of mixing screws and bearings for mixing screws .
Im folgenden wird die Erfindung mit Hilfe der Figuren an einigen bevorzugten Ausführungsformen beschrieben. Es zeigen:In the following, the invention is described with the aid of the figures in a few preferred embodiments. Show it:
Fig. 1 die schematische, teilweise geschnittene Seitenansicht eines Kugelgelenks am unteren Ende der WeIIe einer Mischschnecke, und1 shows the schematic, partially sectioned side view of a ball joint at the lower end of the shaft of a Mixing screw, and
Fig. 2 eine andere Ausführungsform eines Kugelgelenks.Fig. 2 shows another embodiment of a ball joint.
Bei der in Fig. 1 gezeigten ersten Ausführungsform des neuen Kugelgelenks weist die Welle der Mischschnecke 1 am unteren Ende einen Verschlussring 2 auf, in dessen zentraler Bohrung ein Radialgleitlager 3 gehaltert ist. Dazu weist die zentrale Bohrung des Verschlussrings 2 an ihrem in der Figur oberen Ende eine ringförmige Ausnehmung 5 auf, in die ein Aussenf lansch 4 des Radialgleitlagers 3 eingepasst ist. In dem Radialgleitlager ist eine Gelenkkugel 6 angeordnet, die Teil eines Gelenkbolzens ist, der in eine im Bodenteil 10 des Mischers befestigte Hülse 9 eingeführt ist und einen auf derIn the first embodiment shown in Fig. 1 of the new As a ball joint, the shaft of the mixing screw 1 has a locking ring 2 at the lower end, in its central bore a radial sliding bearing 3 is supported. For this purpose, the central bore of the locking ring 2 has at its upper one in the figure At the end, an annular recess 5 into which an outer flange 4 of the radial sliding bearing 3 is fitted. By doing Radial sliding bearing is a joint ball 6, which is part of a hinge pin, which is in a in the bottom part 10 of the mixer fixed sleeve 9 is inserted and one on the
709837/0740709837/0740
Hülse 9 aufsitzenden zylindrischen Teil 8 und einen den Uebergang vom zylindrischen Teil zur Gelenkkugel bildenden konischen Teil 7 aufweist.Sleeve 9 seated cylindrical part 8 and a conical transition from the cylindrical part to the joint ball forming Part 7 has.
In der Gelenkkugel 6 sind mehrere Temperaturfühler 11, 12, 13 und 14 angeordnet. Diese Temperaturfühler sind mit einem elektrischen Messkreis 22 verbunden, zu dem ein elektrisches Messgerät 16 gehört. Das Messgerät wirkt vorzugsweise mit einer nicht gezeigten Alarmeinrichtung zusammen, welche ausgelöst wird, sobald die Temperatur des Kugelgelenks einen vorgegebenen Grenzwert überschreitet.Several temperature sensors 11, 12, 13 and 14 are arranged in the joint ball 6. These temperature sensors come with a electrical measuring circuit 22 connected, to which an electrical measuring device 16 belongs. The measuring device preferably works with a not shown together alarm device, which is triggered as soon as the temperature of the ball joint a predetermined Exceeds limit.
Bei der in Fig. 2 gezeigten Ausführungsform weist das untere Ende der Welle der Mischschnecke 1 eine mehrstufige, axiale Ausnehmung auf. Der Durchmesser der Stufen dieser Ausnehmung nimmt von unten nach oben bzv/. von aussen nach innen ab. In diese mehrstufige Ausnehmung ist ein abgesetzter Lagerzapfen 22 eingesetzt, der mehrere koaxial zueinander angeordnete, zylindrische Absätze aufweist, deren Durchmesser ebenfalls von unten nach oben abnimmt. Der Lagerzapfen 22 ist in die erste Stufe 29 der Ausnehmung eingeführt und mit einer ringförmigen Dichtung 28 abgedichtet. Der erste zylindrische Absatz 21 des Zapfens ist mittels eines Radiallagers 20 in der zweiten Stufe der Ausnehmung gelagert. Eine ringförmige Planfläche zwischen dem ersten und dem zweiten zylindrischen Absatz 21 bzv/. 24 liegt an einem Axialdrucklager 25 an, und der zweite zylindrische Absatz 24 ist mittels eines v/eiteren Radiallagers 26 in einer vierten Stufe der Ausnehmung gelagert. Die verwendeten Lager sind vorzugsweise als Walzen- oder Nadellager ausgebildet.In the embodiment shown in Fig. 2, the lower End of the shaft of the mixing screw 1 has a multi-stage, axial recess. The diameter of the steps of this recess takes from bottom to top or /. from the outside to the inside. In this multi-stage recess is a stepped bearing pin 22 is used, which has a plurality of coaxially arranged, cylindrical shoulders, the diameter of which also decreases from bottom to top. The bearing pin 22 is inserted into the first step 29 of the recess and has an annular shape Seal 28 sealed. The first cylindrical shoulder 21 of the pin is by means of a radial bearing 20 in the second stage of the recess stored. An annular flat surface between the first and second cylindrical shoulder 21 or /. 24 rests on a thrust bearing 25, and the second cylindrical shoulder 24 is by means of a further radial bearing 26 stored in a fourth stage of the recess. The bearings used are preferably roller or needle bearings educated.
Der Lagerzapfen weist auf der aus der Welle der Mischschnekke 1 herausragenden Stirnfläche eine kugelförmige Lagerpfanne 29 für die Gelenkkugel 6 auf. An der gleichen StirnflächeThe bearing journal has a spherical bearing socket on the end face protruding from the shaft of the mixing screw 1 29 for the joint ball 6. On the same face
709837/0740709837/0740
ist mit nicht gezeigten Schrauben ein Verschlussring 27 befestigt, der verhindert, dass die Gelenkkugel 6 aus der Lagerschale herausspringt.a locking ring 27 is attached with screws (not shown), which prevents the joint ball 6 from jumping out of the bearing shell.
Auch bei dieser Ausführungsform sind in der Gelenkkugel 6 Temperaturfühler 11, 12, 13 und 14 angeordnet und mit einem ein Messgerät 16 enthaltenden Messkreis 15 verbunden. Auch diesem Messgerät kann eine Alarmeinrichtung zugeordnet werden.In this embodiment, too, there are 6 temperature sensors in the joint ball 11, 12, 13 and 14 and connected to a measuring circuit 15 containing a measuring device 16. Also this one An alarm device can be assigned to the measuring device.
Die beiden beschriebenen Ausführungsformen können auf vielerlei Weise abgeändert und an spezielle Betriebsbedingungen angepasst werden. Beispielsweise kann der mindestens eine Temperaturfühler wahlweise auch in dem die Lagerpfanne 23 tragenden abgesetzten Zapfen 22 oder in dem Verschlussring 27, der die Gelenkkugel in der Lagerpfanne haltert, befestigt sein.The two embodiments described can be modified in many ways and adapted to special operating conditions will. For example, the at least one temperature sensor can optionally also be located in the one that supports the bearing socket 23 offset pin 22 or in the locking ring 27, which holds the joint ball in the bearing socket be.
709837/0740709837/0740
Claims (11)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL7602167A NL7602167A (en) | 1976-03-02 | 1976-03-02 | MIXER. |
Publications (2)
Publication Number | Publication Date |
---|---|
DE2709127A1 true DE2709127A1 (en) | 1977-09-15 |
DE2709127C2 DE2709127C2 (en) | 1990-06-07 |
Family
ID=19825725
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19772709127 Granted DE2709127A1 (en) | 1976-03-02 | 1977-03-02 | MIXER |
Country Status (13)
Country | Link |
---|---|
JP (1) | JPS5913250B2 (en) |
AU (1) | AU511896B2 (en) |
BE (1) | BE851936A (en) |
CA (1) | CA1060884A (en) |
CH (1) | CH616089A5 (en) |
DE (1) | DE2709127A1 (en) |
FR (1) | FR2342780A1 (en) |
GB (1) | GB1516056A (en) |
IN (1) | IN149430B (en) |
IT (1) | IT1073279B (en) |
NL (1) | NL7602167A (en) |
SE (1) | SE432533B (en) |
ZA (1) | ZA771202B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007009419A1 (en) * | 2005-07-19 | 2007-01-25 | Zf Friedrichshafen Ag | Ball-and-socket joint for a motor vehicle |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2865187B1 (en) * | 2004-01-21 | 2006-05-19 | Goodrich Actuation Systems | DEVICE FOR DETECTING LOAD TRANSFER BY TEMPERATURE VARIATION |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE324165C (en) * | 1919-03-30 | 1920-08-18 | Walter Reinecke | Device for indicating hot bearings |
DE917156C (en) * | 1953-03-19 | 1954-08-26 | Skf Kugellagerfabriken Gmbh | Device for monitoring oil-lubricated roller bearings |
DE925204C (en) * | 1953-10-08 | 1955-03-14 | Skf Kugellagerfabriken Gmbh | Monitoring device for rolling bearings |
DE927846C (en) * | 1953-12-31 | 1955-05-20 | Skf Kugellagerfabriken Gmbh | Monitoring device for rolling bearings |
DE2428615A1 (en) * | 1973-06-19 | 1975-01-16 | Jenkins Of Retford Ltd | MIXER |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2961875A (en) * | 1959-09-09 | 1960-11-29 | Westinghouse Electric Corp | Device for sensing bearing temperature |
FR1545150A (en) * | 1966-11-23 | 1968-11-08 | Mixing or kneading device | |
US3487467A (en) * | 1968-07-08 | 1969-12-30 | Eaton Yale & Towne | Thermal electric bearing monitoring system |
BE757618A (en) * | 1969-11-07 | 1971-04-01 | Fries Sohn Fa J S | BALL JOINT EQUIPPED WITH AN INTERNAL CROSS-BODY COUPLING |
-
1976
- 1976-03-02 NL NL7602167A patent/NL7602167A/en active Search and Examination
-
1977
- 1977-03-01 BE BE2055701A patent/BE851936A/en not_active IP Right Cessation
- 1977-03-01 FR FR7705929A patent/FR2342780A1/en active Granted
- 1977-03-01 CA CA272,957A patent/CA1060884A/en not_active Expired
- 1977-03-01 ZA ZA00771202A patent/ZA771202B/en unknown
- 1977-03-01 SE SE7702229A patent/SE432533B/en unknown
- 1977-03-01 GB GB8499/77A patent/GB1516056A/en not_active Expired
- 1977-03-01 CH CH255177A patent/CH616089A5/en not_active IP Right Cessation
- 1977-03-02 IT IT67456/77A patent/IT1073279B/en active
- 1977-03-02 JP JP52021656A patent/JPS5913250B2/en not_active Expired
- 1977-03-02 DE DE19772709127 patent/DE2709127A1/en active Granted
- 1977-03-02 AU AU22850/77A patent/AU511896B2/en not_active Expired
- 1977-04-15 IN IN137/BOM/77A patent/IN149430B/en unknown
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE324165C (en) * | 1919-03-30 | 1920-08-18 | Walter Reinecke | Device for indicating hot bearings |
DE917156C (en) * | 1953-03-19 | 1954-08-26 | Skf Kugellagerfabriken Gmbh | Device for monitoring oil-lubricated roller bearings |
DE925204C (en) * | 1953-10-08 | 1955-03-14 | Skf Kugellagerfabriken Gmbh | Monitoring device for rolling bearings |
DE927846C (en) * | 1953-12-31 | 1955-05-20 | Skf Kugellagerfabriken Gmbh | Monitoring device for rolling bearings |
DE2428615A1 (en) * | 1973-06-19 | 1975-01-16 | Jenkins Of Retford Ltd | MIXER |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007009419A1 (en) * | 2005-07-19 | 2007-01-25 | Zf Friedrichshafen Ag | Ball-and-socket joint for a motor vehicle |
Also Published As
Publication number | Publication date |
---|---|
DE2709127C2 (en) | 1990-06-07 |
IN149430B (en) | 1981-12-05 |
NL7602167A (en) | 1977-09-06 |
GB1516056A (en) | 1978-06-28 |
BE851936A (en) | 1977-07-01 |
FR2342780A1 (en) | 1977-09-30 |
AU511896B2 (en) | 1980-09-11 |
SE7702229L (en) | 1977-09-03 |
IT1073279B (en) | 1985-04-13 |
CA1060884A (en) | 1979-08-21 |
FR2342780B1 (en) | 1981-01-09 |
CH616089A5 (en) | 1980-03-14 |
JPS52118666A (en) | 1977-10-05 |
SE432533B (en) | 1984-04-09 |
JPS5913250B2 (en) | 1984-03-28 |
ZA771202B (en) | 1978-09-27 |
AU2285077A (en) | 1978-09-07 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8110 | Request for examination paragraph 44 | ||
D2 | Grant after examination | ||
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |