EP3696368A1 - Insert pour une jambe de tourillon d'un outil de forage rotatif - Google Patents

Insert pour une jambe de tourillon d'un outil de forage rotatif Download PDF

Info

Publication number
EP3696368A1
EP3696368A1 EP19157436.7A EP19157436A EP3696368A1 EP 3696368 A1 EP3696368 A1 EP 3696368A1 EP 19157436 A EP19157436 A EP 19157436A EP 3696368 A1 EP3696368 A1 EP 3696368A1
Authority
EP
European Patent Office
Prior art keywords
insert
hat
foot
journal leg
leg
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
Application number
EP19157436.7A
Other languages
German (de)
English (en)
Other versions
EP3696368C0 (fr
EP3696368B1 (fr
Inventor
Raul ROLDAN SALDES
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.)
Sandvik Mining and Construction Tools AB
Original Assignee
Sandvik Mining and Construction Tools AB
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
Priority to EP19157436.7A priority Critical patent/EP3696368B1/fr
Application filed by Sandvik Mining and Construction Tools AB filed Critical Sandvik Mining and Construction Tools AB
Priority to ES19157436T priority patent/ES2963144T3/es
Priority to CN202080010685.1A priority patent/CN113383143A/zh
Priority to CA3126758A priority patent/CA3126758A1/fr
Priority to AU2020221586A priority patent/AU2020221586A1/en
Priority to PCT/EP2020/053522 priority patent/WO2020165199A1/fr
Priority to PE2021001134A priority patent/PE20211437A1/es
Publication of EP3696368A1 publication Critical patent/EP3696368A1/fr
Priority to CL2021002090A priority patent/CL2021002090A1/es
Application granted granted Critical
Publication of EP3696368C0 publication Critical patent/EP3696368C0/fr
Publication of EP3696368B1 publication Critical patent/EP3696368B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • E21B10/50—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of roller type
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • E21B10/56—Button-type inserts

Definitions

  • the present invention relates to an insert for a rotary drill tool and a rotary drill tool comprising an insert.
  • Rotary drills have emerged as an effective tool for specific drilling operations such as the creation of blast holes and geothermal wells.
  • the drill typically comprises a rotary drill bit having three journal legs that mount respective cone-shaped rolling cutters via bearing assemblies that include rollers and balls.
  • the drill bit is attached to one end of a drill string that is driven into the borehole via a rig.
  • the cutting action is achieved by generating axial feed and rotational drive forces that are transmitted to the drill bit via the drill rods coupled end-to-end.
  • Each of the cone-shaped cutters comprise externally mounted hardened cutting buttons positioned at different axial regions for optimised cutting as the drill bit rotates.
  • journal legs come into contact with the wall. Therefore, this area is subject to excessive wear.
  • journal leg wear protection that requires a minimum amount of manual work in manufacturing and that the journal leg wear protection is not worn out faster than the cutting buttons that are used for drilling. It is yet a further specific objective to provide a journal leg with an efficient wear protection that also gives the same protection wherever applied and not gives variation in thickness or hardness or any other kind of variation in hardness, layout and design.
  • an insert adapted to be mounted in a journal leg of a rotary drill tool for cutting rock, the insert being adapted to reinforce the neck of the journal leg.
  • the insert has a mushroom shape comprising a hat and a foot, the hat having a diameter and the foot having a diameter being smaller than the diameter of the hat. This shape of the insert going beyond the diameter of the hole where the insert is located and above the surface of the neck of the journal leg gives good wear protection.
  • the insert with the foot has a certain length from its outer end to the joint of the hat.
  • the foot has a tapered outer end. This results in the insert smoothly fitting into the hole.
  • the insert with the hat has a specific height from upper to lower side ranging from 1 mm to 4 mm. More specifically the height might be 2 mm or 3 mm, or it might even be larger than 4 mm, such as 5 mm or 6 mm. The height gives optimal protection of the journal leg.
  • the insert has a hat with a flat top surface.
  • This surface is mainly parallel with the surface of the journal leg. This gives good wear protection in certain types of drilling machines such as HDD when drilling is performed in horizontal directions.
  • the insert has a hat with a rounded top surface.
  • Any type of round can be used such as conical, spherical, ballistic or pointed.
  • a rounded shape has the advantage of smooth wear protection, that is good in certain types of drilling such as rotary drilling.
  • the insert with the hat has a chamfered lower side. This ensures a good fit in the hole.
  • the insert with the diameter of the hat having a relation to the diameter of the foot that is 1,5. This gives good protection around the hole on the shirt of the journal leg.
  • the insert having a height of the hat in relation to the length of the foot being 30% to 65%.
  • This relation can also be 35%, 40%, 45%, 50%, 55% or 60%.
  • a certain thickness of the hat is needed in order to not brake and last for wear protection.
  • the relation of the height of the hat versus the diameter of the foot is in the range of 20% to 40%, such that it can also be 25%, 30% or 35%.
  • the relation of the height of the hat versus the diameter of the hat is in the range of 10% to 25%, it could also be 15% or 20%.
  • the insert has a circumference or perimeter of the foot with lengthwise extending ridges and grooves. This gives a good grip. It also results in less manual work while manufacturing.
  • journal leg of a rotary drill tool for cutting rock comprising at least one insert.
  • the journal leg of a rotary drill tool comprises a plurality of inserts being arranged at the neck of the journal leg. This is an area that is subject to a lot of wear, so the inserts give good protection.
  • the journal leg comprises at least four inserts being arranged at the shirt of the journal leg.
  • This area is specifically in need of wear protection, so it is advantageous to arrange inserts in this area.
  • the journal leg comprises a plurality of inserts being arranged at the shirt of the journal leg such that the outer circumference of the hat is in line with the outer edge of the shirt.
  • the inserts are placed as close to the edge as possible to in the best possible way protect the area specifically in need of wear protection.
  • the journal leg comprises a plurality of inserts being arranged at the shirt of the journal leg such that the outer circumference of the hat of each insert is arranged adjacent to or on a short distance to the neighbouring insert. This ensures a reliable wear protection.
  • a rotary cutting tool 100 is formed as a cutting bit and comprises a cutting end 101 at an axially forward position and an axially rearward attachment end 102 configured for mounting at one end of a drill string (not shown) forming part of a drill assembly operated via a drilling rig (not shown) configured to provide axial and rotational drive of tool 100.
  • Tool 100 comprises three journal legs 105 projecting axially forward from attachment end 102 and being aligned slightly radially outward such that cutting end 101 comprises a generally larger cross section than attachment end 102.
  • a generally conical shaped cutter 103 is mounted at an end of each journal leg 105 so as to be capable of rotation relative to leg 105 and independent rotation about a separate axis relative to a general rotation of tool 100 and the drill string (not shown).
  • Each cone cutter 103 comprises a generally cone or dome shaped configuration.
  • a plurality of sets of cutting buttons that are used for drilling indicated generally by reference 104 are provided at each respective axial direction of the cone cutter 103.
  • Each cutting button 104 is formed from a wear resistant cemented carbide based material and may comprise any known configuration including semi-spherical, conical, ballistic, semi-ballistic or chisel shaped.
  • the leg 105 may be protected from erosion and abrasion of the cuttings by respective protectors 110 mounted there along.
  • Each leg protector 110 may be an insert mounted in a respective socket formed in the respective leg portion by an interference fit.
  • the leg protectors normally have the same diameter as the hole along the entire length. The diameter of the outer end is normally flush with the outer surface of the neck.
  • a neck 2 is the area of the leg being farthest away from the attachment end to the drill string (seen as 102 in figure 1 ).
  • a shirt 3 of the neck is a cone cutter attached.
  • the neck surface is provided with a number of holes 4 for receiving inserts 10, 20 to act as protectors.
  • the hole 4 has the same diameter along its length with a tapering close to the neck surface, as can be seen in figure 2 .
  • five holes 4, whereof four of them are illustrated to have inserts 10, 20 received therein.
  • the fifth hole is also intended to receive an insert 10, 20.
  • the number of holes 4 with protective inserts can be spread throughout a larger area of the neck surface, e.g. as shown in figure 1 having a large number or protectors 110.
  • Figure 3 discloses a first embodiment of an insert 10 having a general shape of a mushroom.
  • the insert has a foot 13 with a specific length (similar as can be seen in figure 4 ), on top of which foot a hat 16 is connected.
  • the outer diameter of the hat is larger than the outer diameter of the foot (similar as can be seen in figure 4 ).
  • the lower part of the hat 18 connecting to the foot having a chamfered shape to smoothly fit into the tapered hole 4.
  • the outer diameter of the foot 13 has a wave shaped layout with ridges 14 and grooves 15 regularly spread around the perimeter throughout the length of the foot, except for the lower part.
  • the lower part of the foot 17 has a tapered section, where the tapering in radial direction is somewhat larger or going deeper into the core of the foot than the grooves 15. This results in the lower part of foot 17 having no ridges.
  • the length L of the foot is defined as from the outer end defining the extremity of the lower part 17 to where the foot 13 intersects with the hat 16. So the length L of the foot includes the lower tapered section.
  • the foot may be designed without grooves and ridges, such that the diameter is uniform along its length except for the tapered lower part.
  • the first embodiment shown in figure 3 has an upper outer part of the insert being a flat top surface 11 of the hat.
  • the hat contour from the foot and upwards can be described as the chamfered lower part 18 followed by an outer edge of the hat 12, which represents the perimeter of the outer diameter of the hat 16.
  • the outer edge of the hat 12 seen from the side is perpendicular to the top surface 11 or the outer edge of the hat 12 can be said to be parallel with the longitudinal axis of the foot.
  • the contour of the hat also includes a tapered section between the outer edge of the hat 12 and the top surface 11.
  • the height H of the hat 16 is defined as from a point of the horizontal plane that is arranged in the intersection of the chamfered lower part 18 and the outer edge of the hat 12 to the horizontal plane representing the top surface 11.
  • the chamfering 18 fits into the tapered hole 4 (seen in figure 2 ).
  • Figure 4 discloses a second embodiment of an insert 20 having a general shape of a mushroom.
  • the insert has a foot 23 with a specific length L, on top of which foot a hat 26 is connected.
  • the outer diameter of the hat D1 is larger than the outer diameter of the foot D2.
  • the lower part of the hat 28 connecting to the foot having a chamfered shape to smoothly fit into the tapered hole 4.
  • the outer diameter of the foot 23 has a wave shaped layout with ridges and grooves (similar as the design of the foot in figure 3 ) regularly spread around the perimeter throughout the length of the foot, except for the lower part.
  • the lower part of the foot has a tapered section, where the tapering in radial direction is somewhat larger or going deeper into the core of the foot than the grooves. This results in the lower part of foot having no ridges.
  • the length L of the foot is defined as from the outer end to where the foot 23 intersects with the hat 26.
  • the second embodiment shown in figure 4 has an upper outer part of the insert being a rounded top surface 21 of the hat.
  • the top surface 21 can have any rounded shape such as conical, spherical or similar.
  • the hat contour from the foot and upwards can be described as the chamfered lower part 28 followed by an outer edge of the hat 22, which represents the perimeter of the outer diameter of the hat 26.
  • the outer edge of the hat 22 seen from the side is parallel with the longitudinal axis of the foot.
  • the contour of the hat then follows with the round top surface 21, so the round shape is intersecting with the outer edge 22.
  • the height H of the hat 26 is defined as from a point of the horizontal plane that is arranged in the intersection of the chamfered lower part 28 and the outer edge of the hat 22 to a horizontal plane along the tangent of the uppermost point of the rounded top surface 21.
  • the outer edge of the hat 12, 22 corresponding to the circumference of the hat 16, 26 being defined by the outer diameter (corresponding to D1, as seen in figure 4 ).
  • This outer edge 12, 22 of the top of the insert could be arranged close to a neighbouring insert on the journal leg.
  • the outer edge 12, 22 of one insert could even be arranged adjacent to the following insert, such that there is only a very small distance in between. So, nearly in touching relationship with a neighbouring insert.
  • the distance between two inserts following upon each other could also be somewhat larger, i.e. where the edge 3 of the shirttail 2 of the journal leg is more rounded the inserts will be somewhat more distanced due to the curvature of the edge 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
EP19157436.7A 2019-02-15 2019-02-15 Insert pour une jambe de tourillon d'un outil de forage rotatif Active EP3696368B1 (fr)

Priority Applications (8)

Application Number Priority Date Filing Date Title
ES19157436T ES2963144T3 (es) 2019-02-15 2019-02-15 Inserto para una pata de muñón de una herramienta de perforación giratoria
EP19157436.7A EP3696368B1 (fr) 2019-02-15 2019-02-15 Insert pour une jambe de tourillon d'un outil de forage rotatif
CA3126758A CA3126758A1 (fr) 2019-02-15 2020-02-12 Insert pour un pied de tourillon et/ou un dispositif de coupe de cone d'un outil de forage rotatif
AU2020221586A AU2020221586A1 (en) 2019-02-15 2020-02-12 Insert for a journal leg and / or a cone cutter of a rotary drill tool
CN202080010685.1A CN113383143A (zh) 2019-02-15 2020-02-12 用于旋转钻具的轴颈支腿和/或锥形切刀的插入件
PCT/EP2020/053522 WO2020165199A1 (fr) 2019-02-15 2020-02-12 Insert pour un pied de tourillon et/ou un dispositif de coupe de cône d'un outil de forage rotatif
PE2021001134A PE20211437A1 (es) 2019-02-15 2020-02-12 Pieza de insercion para una pata de cojinete y/o un elemento de corte conico de una herramienta de perforacion rotatoria
CL2021002090A CL2021002090A1 (es) 2019-02-15 2021-08-09 Pieza de inserción para una pata de cojinete y/o un elemento de corte cónico de una herramienta de perforación rotatoria.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19157436.7A EP3696368B1 (fr) 2019-02-15 2019-02-15 Insert pour une jambe de tourillon d'un outil de forage rotatif

Publications (3)

Publication Number Publication Date
EP3696368A1 true EP3696368A1 (fr) 2020-08-19
EP3696368C0 EP3696368C0 (fr) 2023-10-11
EP3696368B1 EP3696368B1 (fr) 2023-10-11

Family

ID=65443739

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19157436.7A Active EP3696368B1 (fr) 2019-02-15 2019-02-15 Insert pour une jambe de tourillon d'un outil de forage rotatif

Country Status (8)

Country Link
EP (1) EP3696368B1 (fr)
CN (1) CN113383143A (fr)
AU (1) AU2020221586A1 (fr)
CA (1) CA3126758A1 (fr)
CL (1) CL2021002090A1 (fr)
ES (1) ES2963144T3 (fr)
PE (1) PE20211437A1 (fr)
WO (1) WO2020165199A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3389761A (en) * 1965-12-06 1968-06-25 Dresser Ind Drill bit and inserts therefor
GB1343040A (en) * 1971-04-26 1974-01-10 Stebley F E Insert for drilling unit
EP0083287A1 (fr) * 1981-12-24 1983-07-06 Stenuick Freres S.A. Bouton en matériau dur pour outil de perforation
US5890550A (en) * 1997-05-09 1999-04-06 Baker Hughes Incorporation Earth-boring bit with wear-resistant material
US8522899B2 (en) 2010-10-01 2013-09-03 Varel International, Ind., L.P. Wear resistant material at the shirttail edge and leading edge of a rotary cone drill bit
WO2016209238A1 (fr) * 2015-06-25 2016-12-29 Halliburton Energy Services, Inc. Surfaçage de pièces métalliques

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0912022D0 (en) * 2009-07-10 2009-08-19 Element Six Holding Gmbh Attack tool assembly
EP2434086B1 (fr) * 2010-09-22 2013-05-15 Sandvik Intellectual Property AB Taillant de fleuret et ensemble de forage pour perçage de roche à percussion
DE102012108752B3 (de) * 2012-09-18 2014-01-23 Hartmetall-Werkzeugfabrik Paul Horn Gmbh Schneideinsatz und Werkzeug zur spanenden Bearbeitung eines Werkstücks

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3389761A (en) * 1965-12-06 1968-06-25 Dresser Ind Drill bit and inserts therefor
GB1343040A (en) * 1971-04-26 1974-01-10 Stebley F E Insert for drilling unit
EP0083287A1 (fr) * 1981-12-24 1983-07-06 Stenuick Freres S.A. Bouton en matériau dur pour outil de perforation
US5890550A (en) * 1997-05-09 1999-04-06 Baker Hughes Incorporation Earth-boring bit with wear-resistant material
US8522899B2 (en) 2010-10-01 2013-09-03 Varel International, Ind., L.P. Wear resistant material at the shirttail edge and leading edge of a rotary cone drill bit
WO2016209238A1 (fr) * 2015-06-25 2016-12-29 Halliburton Energy Services, Inc. Surfaçage de pièces métalliques

Also Published As

Publication number Publication date
WO2020165199A1 (fr) 2020-08-20
CL2021002090A1 (es) 2022-02-04
EP3696368C0 (fr) 2023-10-11
ES2963144T3 (es) 2024-03-25
AU2020221586A1 (en) 2021-08-05
EP3696368B1 (fr) 2023-10-11
CN113383143A (zh) 2021-09-10
PE20211437A1 (es) 2021-08-05
CA3126758A1 (fr) 2020-08-20

Similar Documents

Publication Publication Date Title
US6367569B1 (en) Replaceable multiple TCI kerf ring
EP2118431B1 (fr) Outil bilame rotatif
US6105693A (en) Partially enhanced percussive drill bit
EP2902583B1 (fr) Trépan de forage de roche à percussion avec rainures à affleurement
JPH10507238A (ja) ロックドリルビット
US9739095B2 (en) Drill bit having a sunken button and rock drilling tool for use with such a drill bit
US20160090791A1 (en) Percussive rock drill bit
EP3696368B1 (fr) Insert pour une jambe de tourillon d'un outil de forage rotatif
KR20160133445A (ko) 다수 세트의 전방 절삭 인서트들을 가진 타격식 드릴 비트
EP3617439B1 (fr) Trépan à rainures de boues incurvées
JP4706639B2 (ja) 掘削工具
EP3960981B1 (fr) Trépan découpé
JP2018119345A (ja) 掘削工具
AU752097B2 (en) Drill bit
EP3617438A1 (fr) Trépan à percussion avec face avant s'étendant radialement
JP4062216B2 (ja) 掘削工具
EP3690180A1 (fr) Trépan à percussion avec inserts d'usure

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

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20210219

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20220411

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20230526

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602019038981

Country of ref document: DE

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

U01 Request for unitary effect filed

Effective date: 20231101

U07 Unitary effect registered

Designated state(s): AT BE BG DE DK EE FI FR IT LT LU LV MT NL PT SE SI

Effective date: 20231108

REG Reference to a national code

Ref country code: NO

Ref legal event code: T2

Effective date: 20231011

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2963144

Country of ref document: ES

Kind code of ref document: T3

Effective date: 20240325

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

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20240112

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

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20240211

U20 Renewal fee paid [unitary effect]

Year of fee payment: 6

Effective date: 20240229

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

Ref country code: ES

Payment date: 20240306

Year of fee payment: 6

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

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20240211

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20240112