DE2437941A1 - DEVICE FOR KEEPING TENSIONED OF AN ENDLESS CONVEYOR BELT FACED AROUND TWO ROLLERS, IN PARTICULAR A BAND FILTER SYSTEM WITH LIFTING GRID - Google Patents
DEVICE FOR KEEPING TENSIONED OF AN ENDLESS CONVEYOR BELT FACED AROUND TWO ROLLERS, IN PARTICULAR A BAND FILTER SYSTEM WITH LIFTING GRIDInfo
- Publication number
- DE2437941A1 DE2437941A1 DE19742437941 DE2437941A DE2437941A1 DE 2437941 A1 DE2437941 A1 DE 2437941A1 DE 19742437941 DE19742437941 DE 19742437941 DE 2437941 A DE2437941 A DE 2437941A DE 2437941 A1 DE2437941 A1 DE 2437941A1
- Authority
- DE
- Germany
- Prior art keywords
- conveyor belt
- pivot
- endless conveyor
- filter system
- pulley
- 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
- 230000002459 sustained effect Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 description 4
- 239000012065 filter cake Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/09—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with filtering bands, e.g. movable between filtering operations
- B01D29/096—Construction of filtering bands or supporting belts, e.g. devices for centering, mounting or sealing the filtering bands or the supporting belts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
- B01D25/12—Filter presses, i.e. of the plate or plate and frame type
- B01D25/127—Filter presses, i.e. of the plate or plate and frame type with one or more movable filter bands arranged to be clamped between the press plates or between a plate and a frame during filtration, e.g. zigzag endless filter bands
- B01D25/1275—Filter presses, i.e. of the plate or plate and frame type with one or more movable filter bands arranged to be clamped between the press plates or between a plate and a frame during filtration, e.g. zigzag endless filter bands the plates or the frames being placed in a non-vertical position
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtration Of Liquid (AREA)
- Paper (AREA)
- Cigarettes, Filters, And Manufacturing Of Filters (AREA)
- Advancing Webs (AREA)
- Structure Of Belt Conveyors (AREA)
Description
PATENTANWALT DIPLrING. C. Ü. BOECKER 2437941PATENT ADVOCATE DIPLRING. C. Ü. BOECKER 2437941
6670 ST.INGBERT(SAAR), ENSHEIMERSTR.486670 ST.INGBERT (SAAR), ENSHEIMERSTR. 48
s 548-Boe-Aib 0 δ. Aug. 1974s 548-Boe-Aib 0 δ. Aug 1974
Maschinenfabrik SACK GmbH
4000 Düsseldorf-RathMaschinenfabrik SACK GmbH
4000 Düsseldorf-Rath
Vorrichtung zum Gespannthalten eines um zwei Umlenkrollen gelegten endlosen Förderbandes insbesondere einer Bandfilteranlage mit anhebbarem SpaltsiebrostDevice for holding an endless conveyor belt around two pulleys under tension in particular a belt filter system with a slotted screen that can be raised
Die Erfindung betrifft eine Vorrichtung zum Gespannthalten eines um zwei Umlenkrollen gelegten endlosen Förderbandes unter Verwendung einer beweglichen, unter nachhaltiger Spannkraft stehenden Umlenkrolle, wobei das Obertrum des Förderbandes über eine unabhängig von den Umlenkrollen anhebbare Unterlage geführt ist, insbesondere für das Förderband einer Bandfilteranlage mit anhebbarem Spaltsiebrost.The invention relates to a device for keeping an endless conveyor belt placed around two deflection rollers tensioned using a movable deflection pulley under sustained tensioning force, the upper run of the Conveyor belt is guided over a base that can be raised independently of the pulleys, in particular for the conveyor belt a belt filter system with a liftable slotted screen.
Es besteht beim Fördern von Gegenständen mittels eines umlaufenden, endlosen Förderbandes häufig die Notwendigkeit, die Unterlage, über die das Obertrum des Förderbandes läuft, anzuheben. Wenn dabei das Förderband nicht dehnbar ist, muß sich dadurch der Abstand zwischen den beiden Umlenkrollen des Förderbandes verkürzen. Dieser Forderung kann man dadurch begegnen, daß eine Umlenkrolle unter nachhaltiger Spannkraft beweglich angeordnet wird, wobei die Spannkraft von Federn aufgebracht wird. Je nach der erforderlichen Verlagerung der beweglichen Umlenkrolle wächst jedoch bei einer Spannfeder die zu überwindende Kraft, die von dem Förderband unter Zugbeanspruchung aufgenommen werden muß. Insbesondere bei Bandfilteranlagen muß aber eine zu große Änderung in der Zugbeanspruchung des Förderbandes vermiedenWhen conveying objects by means of a circulating, endless conveyor belt often the need to move the surface over which the upper run of the conveyor belt runs, to raise. If the conveyor belt is not stretchable, the distance between the two pulleys must be increased shorten the conveyor belt. This requirement can be met by having a pulley under sustainable Clamping force is arranged to be movable, the clamping force being applied by springs. Depending on the required Displacement of the movable pulley increases with a tension spring, the force to be overcome, which of the Conveyor belt must be taken up under tensile stress. In the case of belt filter systems in particular, however, an excessively large Changes in the tensile stress on the conveyor belt avoided
609808/0145609808/0145
Telefon: (06894) 14396, Wohnung 7124 · Konten !Postscheckamt Essen 101328-438, Gebr.Röchling Bank St. Ingbert 20.013.490Telephone: (06894) 14396, apartment 7124 · Accounts! Postscheckamt Essen 101328-438, Gebr.Röchling Bank St. Ingbert 20.013.490
werden, wenn dieses Förderband ein bandartiges Filtermaterial mitführt/ das keine Zerrungen in der Längsrichtung verträgt.if this conveyor belt carries a belt-like filter material with it / which cannot tolerate pulling in the longitudinal direction.
Der Erfindung liegt die Aufgabe zugrunde, die nachhaltige Spannkraft für eine Umlenkrolle eines endlosen Förderbandes federlos aufzubringen, wobei eine Verkürzung des Abstandes der beiden Umlenkrollen durch zwangweises Hochheben des Obertrums des Förderbandes eher zu einer Verringerung· der unvermeidlichen Zugspannung im Förderband führt als zu einer Vergrößerung. Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die bewegliche Umlenkrolle an Schwenkhebeln gelagert ist, deren Schwenkachse zwischen der Umlenkrolle und der anhebbaren Unterlage sowie tiefer als die Rollenachse bei der tiefsten, durch Anschlag begrenzten Schwenklage der Umlenkrolle angeordnet ist. Bei dieser Anordnung der beweglichen Umlenkrolle wird das Förderband allein durch das Kraftmoment, das die Umlenkrolle infolge ihres Gewichtes gegenüber der Schwenkachse ausführt, gespannt gehalten. Der das Moment bestimmende Hebelarm wird um so kürzer, je mehr sich bei der erfindungsgemäß definierten Lage der Schwenkachse sich die bewegliche Umlenkrolle auf einem Kreisbogen um die Schwenkachse hebt, wenn das Obertrum des endlosen Förderbandes durch die bewegliche Unterlage angehoben wird. Die Zugspannung im Obertrum des Förderbandes wird also mit dem kleiner werdenden Moment ebenfalls kleiner, was zu erreichen war.The invention is based on the object of providing the sustained tensioning force for a deflection roller of an endless conveyor belt To be applied without a spring, with a shortening of the distance between the two pulleys by forcibly lifting the upper run of the conveyor belt leads to a decrease in the unavoidable tension in the conveyor belt rather than to an increase. This object is achieved according to the invention in that the movable deflection roller is mounted on pivot levers, its pivot axis between the deflection roller and the liftable base and lower than the roller axis at the lowest, is arranged by stop limited pivot position of the pulley. With this arrangement, the movable pulley is the conveyor belt solely through the moment of force that the deflection roller executes due to its weight in relation to the pivot axis, kept tense. The lever arm determining the moment becomes shorter, the more it changes according to the invention defined position of the swivel axis, the movable deflection roller is raised on an arc around the swivel axis when the Upper run of the endless conveyor belt is raised by the movable base. The tension in the upper run of the conveyor belt So with the decreasing moment, what was to be achieved also becomes smaller.
Zur Einstellung der Ausgangslage der beweglichen Umlenkrolle wird zweckmäßig der Anschlag zur unteren Begrenzung der Schwenklage der Schwenkarme höhenverstellbar gemacht. Die Anfangsspannung im Förderband kann dadurch eingestellt werden, daß die Schwenkachse in Gleitsteinen geführt ist, die in waagerechten Schlitzen ortsfester Rahmenteile verstellbar und festklemmbar ist.To set the starting position of the movable deflection roller, the stop for the lower limit of the pivot position is expedient the swivel arms made adjustable in height. The initial tension in the conveyor belt can be adjusted in that the pivot axis is guided in sliding blocks, which can be adjusted and clamped in horizontal slots in stationary frame parts is.
609808/0 145609808/0 145
In der Zeichnung ist ein Ausführungsbeispiel der erfindungsgemäßen Vorrichtung zum Gespannthalten eines endlosen Förderbandes anhand einer Bandfilteranlage dargestellt. Die Zeichnung zeigt einen senkrechten Längsschnitt durch die Filterkammer 1 der Bandfilteranlage, in der ein Spaltsiebrost 2 höhenveränderlich geführt ist. Dieses Spaltsiebrost 2 ist einheitlich mit umlaufenden Dichtrahmenteilen 4 und kann über ebenso im Rechteck umlaufend angeordnete Druckbälge 3 hochgesteuert werden. Die rechte Zeichnungshälfte zeigt das hochgesteuerte Spaltsiebrost 2 mit den Dichtrahmenteilen 4 unter Anlage an ortsfesten Gegendichtrahmenteilen 5, die mit einer umlaufenden Schnurdichtung 6 versehen sind.In the drawing is an embodiment of the invention Device for keeping an endless conveyor belt tensioned using a belt filter system. The drawing shows a vertical longitudinal section through the filter chamber 1 of the belt filter system, in which a slotted screen grate 2 is guided variable in height. This slotted screen grate 2 is uniformly with circumferential sealing frame parts 4 and can be controlled upward via pressure bellows 3 likewise arranged circumferentially in a rectangle. The right half of the drawing shows the highly controlled slotted screen grate 2 with the sealing frame parts 4 below Plant on stationary counter sealing frame parts 5, which with a circumferential cord seal 6 are provided.
Im Ausführungsbeispiel wird das Obertrum 8 eines endlosen Förderbandes über das Spaltsiebrost 2 geführt. Das endlose Förderband ist um eine ortsfeste und angetriebene Umlenkrolle 7 sowie um eine bewegliche Rolle 10 herumgeführt. Das Filterband wird von einer Vorratsrolle 9, die durch Eigengewicht auf der einlaufseitigen beweglichen Umlenkrolle 10 anliegt, abgegeben.In the exemplary embodiment, the upper run 8 of an endless conveyor belt is guided over the slotted screen grate 2. The endless one Conveyor belt is around a stationary and driven pulley 7 and guided around a movable roller 10. The filter belt is from a supply roll 9, which is by its own weight rests on the movable deflection roller 10 on the inlet side, released.
Wenn zu Beginn eines Filtervorganges das Spaltsiebrost 2 mit dem Obertrum 8 des endlosen Förderbandes sowie dem durchgezogenen Filterband hochgesteuert wird, um das von der Filterflüssigkeit beaufschlagte Rechteck des Filterbandes außen abzudichten, so muß sich zwangsläufig der Abstand zwischen den Achsen der Umlenkrollen 7 und Io verringern, wenn das Förderband nicht dehnbar ist. Hierzu ist erfindungsgemäß die Achse der einlaufseitigen beweglichen Umlenkrolle 10 in zwei Schwenkhebeln 12 gelagert, die um eine Schwenkachse 13 aus der definierten unteren Schwenklage im Uhrzeigersinn schwenken können, wenn das Obertrum 8 des Förderbandes durch Hochsteuern des Spaltsiebrostes 2 mit den umlaufenden Dichtrahmenteilen 4 auf das in der rechten Zeichnungshälfte dargestellten Niveau mitangehoben wird. Da die Schwenkachse 13 erfindungsgemäß zwischenIf at the beginning of a filtering process, the slotted screen grate 2 with the upper run 8 of the endless conveyor belt as well as the continuous The filter belt is raised to seal the outside of the rectangle of the filter belt that is exposed to the filter fluid, so the distance between the axes of the pulleys 7 and Io must inevitably decrease when the conveyor belt is not stretchable. For this purpose, according to the invention, the axis of the movable deflection roller 10 on the inlet side is in two pivot levers 12 mounted, which can pivot clockwise about a pivot axis 13 from the defined lower pivot position, when the upper run 8 of the conveyor belt by moving up the slotted screen grate 2 with the surrounding sealing frame parts 4 the level shown in the right half of the drawing is also raised. Since the pivot axis 13 according to the invention between
609808/0U5609808 / 0U5
der Umlenkrolle 10 und der anhebbaren Unterlage bzw. dem anhebbaren Spaltsiebrost 2 und dabei tiefer als die Rollenachse 11 bei der tiefsten, durch Anschlag begrenzten Schwenklage der Umlenkrolle angeordnet ist, verkürzt sich der zwischen der Rollenachse 11 und der Schwenkachse 13 eingestellte Hebelarm, womit sich das von dem Gewicht der Vorratsrolle ausgeübte Krafjtmoment in dem Maße verringert, wie Einheit 2,4 hochgesteuert wird. Der Abstand der Achsen der Umlenkrollenthe deflection roller 10 and the liftable base or the liftable slotted screen grate 2 and thereby deeper than the roller axis 11 is arranged at the deepest, limited by the stop pivot position of the pulley, the shortened between the roller axis 11 and the pivot axis 13 adjusted lever arm, whereby the weight of the supply roll exerted force torque is reduced as unit 2,4 is raised. The distance between the axes of the pulleys
7 und 11 verringert sich also wunschgemäß unter Herabsetzung der Zugspannung im endlosen Förderband und damit auch in dem mitgeführten Filterband, womit der Hub der Einheit 2,4 verhältnismäßig groß eingestellt werden kann, um den Filterkuchen auf dem Filterband auf eine wirtschaftliche Höhe anwachsen lassen zu können. Der Filterkuchen muß bekanntlich unter Einschaltung des Förderbandes durch öffnungen in einer Seitenwand der Filterkammer 1 ausgetragen werden können.7 and 11 is therefore reduced as desired while reducing the tensile stress in the endless conveyor belt and thus also in the filter belt carried along, with which the stroke of the unit 2.4 can be set relatively large to the filter cake to be able to grow on the filter belt to an economical level. As is well known, the filter cake must can be discharged through openings in a side wall of the filter chamber 1 with the use of the conveyor belt.
Die untere Begrenzung der Schwenklage der Schwenkarme 12, die im übrigen winkelförmig ausgebildet sind, kann durch einen verstellbaren Anschlag, dargestellt durch Stellschrauben 14, höhenverstellbar gemacht sein. Zum Spannen des endlosen Förderbandes mit dem Obertrum 8 ist die Schwenkachse 13 in Gleitsteinen 15 geführt, die in waagerechten Schlitzen 16 der ortsfesten Tragrahmen 17 für die Vorratsrolle 9 und die Umlenkrolle Io verstellbar und festklemmbar sind. Zum Festklemmen dienen Stellschrauben 18.The lower limit of the pivot position of the pivot arms 12, which are otherwise angular, can be adjusted by an Stop, represented by adjusting screws 14, be made adjustable in height. For tensioning the endless conveyor belt with the upper run 8, the pivot axis 13 is guided in sliding blocks 15, which are in horizontal slots 16 of the stationary Support frame 17 for the supply roll 9 and the pulley Io are adjustable and can be clamped. For clamping are used for adjusting screws 18.
609808/0145609808/0145
Claims (3)
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19742437942 DE2437942C2 (en) | 1974-08-07 | 1974-08-07 | Belt filter system for liquids |
DE19742437940 DE2437940A1 (en) | 1974-08-07 | 1974-08-07 | BAND FILTER SYSTEM FOR LIQUIDS WITH A SCREEN GRATE |
DE19742437941 DE2437941C2 (en) | 1974-08-07 | 1974-08-07 | Device for keeping an endless conveyor belt tensioned |
IT2601775A IT1040309B (en) | 1974-08-07 | 1975-08-01 | BELT FILTRATION DEVICE BELT FILTRATION SYSTEM FOR LIQUIDS WITH SCREEN SIEVE GRID |
IT2601675A IT1040308B (en) | 1974-08-07 | 1975-08-01 | Belt filter with cloth overlay - having continuous belt around rollers fed from roll of overlay |
JP50095330A JPS5142170A (en) | 1974-08-07 | 1975-08-05 | |
FR7524495A FR2281152A1 (en) | 1974-08-07 | 1975-08-06 | BAND FILTER DEVICE |
FR7524494A FR2281151A1 (en) | 1974-08-07 | 1975-08-06 | Belt filter with cloth overlay - having continuous belt around rollers fed from roll of overlay |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19742437942 DE2437942C2 (en) | 1974-08-07 | 1974-08-07 | Belt filter system for liquids |
DE19747426814 DE7426814U (en) | 1974-08-07 | 1974-08-07 | BAND FILTER DEVICE |
DE19742437940 DE2437940A1 (en) | 1974-08-07 | 1974-08-07 | BAND FILTER SYSTEM FOR LIQUIDS WITH A SCREEN GRATE |
DE19742437941 DE2437941C2 (en) | 1974-08-07 | 1974-08-07 | Device for keeping an endless conveyor belt tensioned |
Publications (2)
Publication Number | Publication Date |
---|---|
DE2437941A1 true DE2437941A1 (en) | 1976-02-19 |
DE2437941C2 DE2437941C2 (en) | 1986-10-09 |
Family
ID=27431879
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19742437942 Expired DE2437942C2 (en) | 1974-08-07 | 1974-08-07 | Belt filter system for liquids |
DE19742437940 Withdrawn DE2437940A1 (en) | 1974-08-07 | 1974-08-07 | BAND FILTER SYSTEM FOR LIQUIDS WITH A SCREEN GRATE |
DE19742437941 Expired DE2437941C2 (en) | 1974-08-07 | 1974-08-07 | Device for keeping an endless conveyor belt tensioned |
Family Applications Before (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19742437942 Expired DE2437942C2 (en) | 1974-08-07 | 1974-08-07 | Belt filter system for liquids |
DE19742437940 Withdrawn DE2437940A1 (en) | 1974-08-07 | 1974-08-07 | BAND FILTER SYSTEM FOR LIQUIDS WITH A SCREEN GRATE |
Country Status (3)
Country | Link |
---|---|
DE (3) | DE2437942C2 (en) |
FR (2) | FR2281152A1 (en) |
IT (1) | IT1040309B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3320913A1 (en) * | 1983-06-09 | 1984-12-13 | Luigi Moruzzo Zaccaron | Bucket chain conveyor |
DE4233131A1 (en) * | 1992-10-02 | 1994-04-07 | Bosch Gmbh Robert | Continuous conveyor belt assembly - running between drive and deflector, has rotary belt roller |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE840850C (en) * | 1950-12-08 | 1952-06-05 | Krauss Maffei Ag | Cable guide on cable car supports, especially for single cable cars using flexible means, e.g. B. rubber |
DE1901380U (en) * | 1964-06-27 | 1964-09-24 | Beumer Maschf Bernhard | DEVICE FOR TENSIONING CONVEYOR BELTS. |
FR2092836A7 (en) * | 1970-06-24 | 1972-01-28 | Clement Vantajour Claude | |
DE2221548A1 (en) * | 1972-05-03 | 1973-11-15 | Zippe Kg | SCRAPER CONVEYOR |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE7317897U (en) * | 1974-07-18 | Faudi Feinbau Gmbh | ||
NL264745A (en) * | 1961-05-25 |
-
1974
- 1974-08-07 DE DE19742437942 patent/DE2437942C2/en not_active Expired
- 1974-08-07 DE DE19742437940 patent/DE2437940A1/en not_active Withdrawn
- 1974-08-07 DE DE19742437941 patent/DE2437941C2/en not_active Expired
-
1975
- 1975-08-01 IT IT2601775A patent/IT1040309B/en active
- 1975-08-06 FR FR7524495A patent/FR2281152A1/en active Granted
- 1975-08-06 FR FR7524494A patent/FR2281151A1/en active Granted
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE840850C (en) * | 1950-12-08 | 1952-06-05 | Krauss Maffei Ag | Cable guide on cable car supports, especially for single cable cars using flexible means, e.g. B. rubber |
DE1901380U (en) * | 1964-06-27 | 1964-09-24 | Beumer Maschf Bernhard | DEVICE FOR TENSIONING CONVEYOR BELTS. |
FR2092836A7 (en) * | 1970-06-24 | 1972-01-28 | Clement Vantajour Claude | |
DE2221548A1 (en) * | 1972-05-03 | 1973-11-15 | Zippe Kg | SCRAPER CONVEYOR |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3320913A1 (en) * | 1983-06-09 | 1984-12-13 | Luigi Moruzzo Zaccaron | Bucket chain conveyor |
DE4233131A1 (en) * | 1992-10-02 | 1994-04-07 | Bosch Gmbh Robert | Continuous conveyor belt assembly - running between drive and deflector, has rotary belt roller |
Also Published As
Publication number | Publication date |
---|---|
DE2437940A1 (en) | 1976-02-19 |
DE2437941C2 (en) | 1986-10-09 |
IT1040309B (en) | 1979-12-20 |
FR2281152B1 (en) | 1979-03-09 |
FR2281151A1 (en) | 1976-03-05 |
DE2437942C2 (en) | 1984-08-09 |
DE2437942A1 (en) | 1976-02-19 |
FR2281151B1 (en) | 1981-10-09 |
FR2281152A1 (en) | 1976-03-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OGA | New person/name/address of the applicant | ||
8110 | Request for examination paragraph 44 | ||
8127 | New person/name/address of the applicant |
Owner name: MDS MANNESMANN DEMAG SACK GMBH, 4000 DUESSELDORF, |
|
8127 | New person/name/address of the applicant |
Owner name: MANNESMANN AG, 4000 DUESSELDORF, DE |
|
D2 | Grant after examination | ||
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |