EP3505717B1 - Trépan - Google Patents

Trépan Download PDF

Info

Publication number
EP3505717B1
EP3505717B1 EP18214476.6A EP18214476A EP3505717B1 EP 3505717 B1 EP3505717 B1 EP 3505717B1 EP 18214476 A EP18214476 A EP 18214476A EP 3505717 B1 EP3505717 B1 EP 3505717B1
Authority
EP
European Patent Office
Prior art keywords
bit
drill bit
reamer blade
ring
drilled
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.)
Active
Application number
EP18214476.6A
Other languages
German (de)
English (en)
Other versions
EP3505717A1 (fr
Inventor
Hannu Paasonen
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.)
Robit PLC
Original Assignee
Tri-Mach Oy
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 Tri-Mach Oy filed Critical Tri-Mach Oy
Priority to PL18214476T priority Critical patent/PL3505717T3/pl
Publication of EP3505717A1 publication Critical patent/EP3505717A1/fr
Application granted granted Critical
Publication of EP3505717B1 publication Critical patent/EP3505717B1/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
    • E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
    • E21B10/32—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools
    • E21B10/327—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools the cutter being pivoted about a longitudinal axis
    • 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
    • E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
    • E21B10/32—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools
    • 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
    • E21B10/36—Percussion drill bits
    • E21B10/40—Percussion drill bits with leading portion
    • 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
    • E21B10/42—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
    • 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
    • E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids
    • 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
    • E21B10/64—Drill bits characterised by the whole or part thereof being insertable into or removable from the borehole without withdrawing the drilling pipe
    • E21B10/66—Drill bits characterised by the whole or part thereof being insertable into or removable from the borehole without withdrawing the drilling pipe the cutting element movable through the drilling pipe and laterally shiftable
    • 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
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/20—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes
    • E21B7/208—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes using down-hole drives

Definitions

  • the invention relates to a drill bit meant for drilling into the ground or rock.
  • WO publication 2015/059341 A1 discloses a drilling device which comprises a pilot bit drilling a middle portion of a hole and, detachably connectable to it, a ring bit which drills the outer circle of the hole, as well as an arrangement for pulling a protective pipe into said hole during drilling,
  • a problem with a drilling device of the kind referred to in the above example is that as the drilling device is pulled out of said drilled hole so that the protective pipe is left in place in the drilled hole, it is also necessary to leave in place the ring bit drilling the outer circle of the hole at the bottom of the drilled hole at the end of the protective pipe.
  • the drill bit according to the invention is characterized by what is disclosed in the independent claim.
  • the invention is based on the drill bit comprising reamer blade wings moving outward from a side of a body of the drill bit, which are arranged, when the drill bit is rotated in the intended drilling direction, to move outwards from the side of the body of the drill bit, extending past the largest outer diameter of the drill bit to enlarge the hole being drilled, and as the drill bit is rotated in the opposite direction, to return back inside the largest outer diameter of the drill bit in order to pull out the drill bit from the hole being drilled.
  • the reamer blade wings moving outwards and back inwards from the side of the body of the drill bit and extending, at least in their outmost position, outside the largest outer diameter of the drill bit, enlarge the hole being drilled as the drill bit is being rotated in the intended drilling direction and in such a situation being outwards from the side of the body of the drill bit, so that the protective pipe to be placed in the hole being drilled fits in the drilled hole.
  • the reamer blade wings are arranged to move back inwards whereby the outer diameter of the drill bit returns to substantially its original dimension whereby the drill bit in its entirety has room to be pulled out of the drilled hole through the protective pipe. In such a case, none of the drill bit parts need to be left in drilled hole.
  • Figure 1 schematically shows a side view of a drill bit 1, partly in cross-section, intended for drilling into the ground or rock.
  • Figure 1 further shows, in cross section, a protective pipe 10 which is adapted in a hole being drilled during drilling and which the drill bit 1 is adapted to pull with it during drilling.
  • Figure 2 is a schematic top view of the drill bit 1 of Figure 1 , open at the reamer blade wings 21 of the drill bit 1.
  • Figures 1 and 2 show the drill bit 1 in an unused position or alternatively in such a usage situation where the drill bit 1 is rotated in the opposite direction in relation to the intended drilling direction R in which the drill bit 1 is intended to be rotated during drilling.
  • Figure 3 shows in a schematic manner a side view of the drill bit 1 of Figure 1 , partly in cross-section, during use of the drill bit 1 as the drill bit 1 is rotated in the drilling direction indicated by the arrow R
  • Figure 4 is a schematic top view of the drill bit 1 of Figure 1 , open at the reamer blade wings 21 of the drill bit 1, in a drill bit 1 usage situation of Figure 3 .
  • the drill bit 1 comprises a body 2 of the drill bit 1 and a stem 3 of the drill bit 1, which is of one uniform structure with the body 2 of the drill bit, that is, joining seamlessly to the body 2 of the drill bit 1, by means of which stem 3 the drill bit 1 may be connected to a drill rod of a drilling device.
  • the body 2 and stem 3 of the drill bit 1 may be separate parts and joined together by a screw joint, for example.
  • the drilling device may comprise a rotating device, only, to rotate the drill rod, whereby the drill rod is adapted to transmit only the rotational movement of the rotating device to the drill bit 1 for the purpose of rotating the drill bit 1 around its centre axis C.
  • the drilling device may also comprise a percussion device to direct a percussive motion to the drill rod, whereby the drill rod is adapted to transmit both the rotational movement of the rotating device to the drill bit 1 for the purpose of rotating the drill bit 1 and the percussive motion of the percussive device to drive the drill bit 1 against the ground or rock being drilled. Therefore, the drill bit 1 may be intended either for drilling that only comprises rotating the drill bit 1, or drilling comprising both the rotating and percussion of the drill bit 1.
  • the body 2 of the drill bit 1 comprises a face 4 directed toward a hole to be drilled, and a rear surface 5 directed away from the hole to be drilled, to which rear surface 5 the stem part 3 of the drill bit 1 is connected, and which rear surface 5 is, as a surface around the stem 3, a circular surface.
  • a side 6 of the body 2 of the drill bit 1 which determines the outer circle and outer diameter of the drill bit 1.
  • the side 6 comprises, in the direction of the centre axis C of the drill bit 1, a front part 6a located on the side of the face 4 and ending at it, and a rear part 6b located on the side of the rear surface 5 and ending at it.
  • the outer diameter of the rear part 6b has been dimensioned larger than the outer diameter of the front part 6a, whereby a flange 7 is formed on the side 6 at the rear part 6b and protruding outwards from the side 6, at which the dimension of the outer diameter of the body 2 of the drill bit 1 and the circumference of the outer circle of the brill bit 1 are at their maximum.
  • a protective pipe 10 may be used when ramming pipe piles, for example.
  • a protective pipe 10 may also be used, for example, to support the walls of a hole drilled in a soft ground so that the hole walls do not collapse inside the hole being drilled.
  • a protective pipe 10 may also be used as an installation channel, for example, for wires, pipes, cables etc. to be placed underground.
  • the body 2 of the drill bit 1 further comprises a cylinder-formed recess 8 directed from the face 4 towards the rear surface 5, the centre axis of which is substantially equal to the centre axis C of the drill bit 1.
  • the face 4 of the body 2 of the drill bit 1 is circular.
  • the purpose of the recess 8 is to receive a part of a pilot bit 13 intended for drilling the centre of the hole being drilled, to be described in more detail below, and to fasten the pilot bit 13 to the body 2 of the drill bit 1 by the inner thread 9 on the circle of the recess 8.
  • the drill bit 1 further includes a set of bits to break the ground or rock being drilled.
  • the set of bits of the drill bit 1 comprises a pilot bit 13 meant for drilling the centre of the hole to be drilled, the diameter of which is notably smaller than the outer diameter of the drill bit 1.
  • the pilot bit 13 comprises a bit part 14 directed towards the hole to be drilled, and a stem part 15 directed away from the hole to be drilled, which in the embodiment shown in the figures are of one uniform structure, so seamlessly join each other.
  • the bit part 14 and stem part 15 may be separate parts and joined together by a screw joint, for example.
  • the stem part 15 has an external thread 16 which corresponds to the inner thread 9 on the recess 8 of the body 2 of the drill bit 1, referred to in the above, whereby the pilot bit 13 may be fastened to the body 2 of the drill bit 1 by inserting the stem part 15 of the pilot bit 13 in said recess 8 and turning the pilot bit 13 so that the external thread 16 on the stem part 15 of the pilot bit 13 turns into contact with the inner thread 9 on the recess 8 of the body 2 of the drill bit 1.
  • the bit part 14 of the pilot bit 13 comprises a face 14a of the bit part 14, directed towards a hole to be drilled, and a rear surface 14b of the bit part 14, directed away from the hole to be drilled, which, as a surface positioned around the stem part 15, is a circular surface.
  • the face 14a comprises bit pins breaking the surface to the drilled and/or bit edges cutting the surface to be drilled. For reasons of clarity, the figures do not show said bit pins and/or bit edges.
  • the face 14a of the bit part 14 of the pilot bit 13 forms the face of the drill bit 1, which is adapted to first meet the surface being drilled.
  • the set of bits of the drill bit 1 further comprises a ring bit 17 meant for drilling the outer circle of the hole to be drilled.
  • the ring bit 17 has a face 17a directed towards the hole to be drilled, and a rear surface 17b directed away from the hole to be drilled.
  • the face 17a comprises bit pins breaking the surface to the drilled and/or bit edges cutting the surface to be drilled. For reasons of clarity, the figures do not show said bit pins and/or bit edges.
  • the ring bit 17 is adapted around the stem part 15 of the pilot bit 13 between the pilot bit 13 and the body 2 of the drill bit 1 so that the face 17a of the ring bit 17 is positioned towards the rear surface 14b of the bit part 14 of the pilot bit 13 and substantially against it whereby the rear surface 14b of the bit part 14 of the pilot bit 13 to some extent covers the face 17a of the ring bit 17 on its inner circle.
  • the rear surface 17b of the ring bit 17 sets towards the face 4 of the body 2 of the drill bit 1 and substantially against it.
  • the outer diameter of the ring bit 17 is dimensioned substantially as large as the outer diameter of the face 4 of the body 2 of the ring bit 1, whereby the rear surface 17b of the ring bit 17 substantially in its entirety covers the face 4 of the body 2 of the ring bit 1.
  • the body 2, pilot bit 13, and ring bit 17 of the drill bit 1 have been arranged to be adapted in relation to each other with such clearances between the pilot bit 13 and ring bit 17, as well as the ring bit 17 and the body 2 of the drill bit 1, that the ring bit 17 may substantially without obstruction turn, in relation to the body 2 and the pilot bit 13 of the drill bit 1, around the rotation axis formed by the stem part 15 of the pilot bit 13.
  • the drill bit 1 further comprises along the centre axis C of the drill bit 1 a flushing medium channel 18 running through the stem 3, body 2, and pilot bit 13 of the drill bit 1.
  • flushing medium such as air or water
  • the flushing medium channel 18 may extend all the way to the face 14a of the bit part 14 of the pilot bit 13, whereby the face 14a of the bit part 14 of the pilot bit 13 may comprise flushing grooves, not shown in the figures for reasons of clarity, for removing drilling waste from the front of the pilot bit 13 towards the outer circle of the drill bit 1.
  • Part of the flushing medium may be fed to the face 17a of the ring bit 17, whereby the face 17a of the ring bit 17 may comprise flushing grooves, not shown in the figures for reasons of clarity, for removing drilling waste from the front of the ring bit 17 towards the outer circle of the drill bit 1.
  • flushing grooves 19 have in turn been formed, through which the drilling waste coming off the hole being drilled is able to pass behind the drill bit 1, from where the drilling waste may further travel along a channel formed between the protective pipe 10 and the stem 3 of the drill bit 1 and the drilling device drill rod, as its extension, out of the hole being drilled.
  • the body 2 of the drill bit 1 further comprises, on its face 4, recesses 20 open upward in the direction of the ring bit 17.
  • the recesses 20 proceed or extend in a curved manner, that is, they have an imaginary centre line from the inner circle of the body 2 of the drill bit 1 all the way to the outer circle of the body 2 of the drill bit 1 in a region defined by the front part 6a of the side 6 of the body 2 of the drill bit 1.
  • the curving direction of the recesses 20 from the inner circle of the body 2 of the drill bit 1 to the outer circle of the body 2 of the drill bit 1 is in the opposite direction in relation to the intended rotation direction R of the drill bit 1.
  • the recess 20 has a first end 20' located on the inner circle of the body 2 of the drill bit 1, and a second end 20" located on the outer circle of the body 2 of the drill bit 1.
  • the recesses 20 are thus in the front part 6a of the side 6 of the body 2 of the drill bit 1, and open to the outer circle of the body 2 of the drill bit 1.
  • Each recess 20 is located in portions of the body 2 of the drill bit 1 between flushing grooves 19 formed in the side 6 of the body 2 of the drill bit 1 in the direction of the circle of the drill bit 1.
  • each recess 20 has further been installed, whereby each recess 20 forms a reamer blade wing space 20 for the reamer blade wing 21.
  • Each reamer blade wing 21 is arranged movably in a corresponding reamer blade wing space 20 so that the reamer blade wing 21 is able to partly move out from the reamer blade wing space 20, extending in part out of the reamer blade wing space 20 all the way beyond the largest outer diameter of the drill bit 1, that is, outside the rear part 6b of the side 6 of the body 2 of the drill bit 1, so outside the flange part 7, as will be disclosed in closer detail below, when the rotation of the drill bit 1 is started in the intended drilling direction R.
  • the reamer blade wings 21 are arranged to move back inside the reamer blade wing spaces 20.
  • the reamer blade wing 21 has a first end 21' directed towards the inner circle of the body 2 of the drill bit 1, and a second end 21" directed towards the outer circle of the body 2 of the drill bit 1.
  • the reamer blade wing 21 is curved, corresponding to the curvature and direction of curvature of the recesses 20.
  • the purpose of the reamer blade wings 21 is to break or enlarge the hole being drilled on its outer circle so that the protective pipe 10 that the drill bit 1 is pulling with it fits in the hole being drilled. Due to this, the reamer blade wings 21 at their outmost position need to extend beyond the largest outer diameter of the drill bit 1 and at the same time beyond the outer diameter of the protective pipe 10.
  • the reamer blade wings 21 are arranged to return to the reamer blade wing spaces 20.
  • the ring bit 17 is adapted around the stem part 15 of the pilot bit 13 between the bit part 14 of the pilot bit 13 and the body 2 of the drill bit 1 so that there are clearances between the rear surface 14b of the bit part 14 of the pilot bit 13 and the face 17a of the ring bit 17 as well as the face 4 of the body 2 of the drill bit 1 and the rear surface 17b of the ring bit 17, which allow the ring bit 17 to rotate in relation to the stem part 15 of the pilot bit 13.
  • Said rotation of the ring bit 17 in relation to the stem part 15 of the pilot bit 13 is, in turn, adapted to guide the moving of the reamer blade wings 21 out of the reamer blade wing spaces 20 and back into the reamer blade wing spaces 20 by guide elements arranged on and matched together on the rear surface 17b of the ring bit 17 and reamer blade wings 21.
  • the rear surface 17b of the ring bit 17 comprises, as said guide elements on the ring bit 17, curved guide grooves 22 adapted to proceed or run in a curved manner from the direction of the inner circle of the ring bit 17 to the direction of the outer circle of the ring bit 17, the direction or curvature 1 being to the intended rotation direction R of the drill bit 1.
  • the guide groove 22 has a first end 22' in the vicinity of the inner circle of the ring bit 17 at a distance from the inner circle of the ring bit 17 towards the outer circle, and a second end 22" in the vicinity of the outer circle of the ring bit 17 at a distance from the outer circle of the ring bit 17 towards the inner circle.
  • the curved guide groove 22 and the curved guide protrusion 23 of the reamer blade wing 21 adapted on it are adapted to guide the movement of the reamer blade wing 21 outwards from the reamer blade wing space 20 and back into the reamer blade wing space 20 along a curved path defined by the reamer blade wing space 20.
  • the guide protrusion 23 is positioned at the first end 22' of the guide groove 22, from where it transfers to the second end 22" of the guide groove 22 as the rotation of the drill bit 1 starts in the intended drilling direction.
  • a locking element in the embodiment of the figures a locking recess 24 formed in the curved guide groove 22 and directed in the intended rotation direction R of the drill bit 1, the length of which corresponds at least to the length of the guide protrusion 23.
  • each reamer blade wing 21 are adapted to lock into each other at such a position where each reamer blade wing 21 is arranged to extend to its outmost position outside the largest outer diameter of the drill bit 1 and outside the outer diameter of the protective pipe 10 possibly included in the drilling activity, at which position the curved guide protrusion 23 on the reamer blade wing 21 is placed in the locking recess 24 in the curved guide groove 22.
  • the rotation of the drill bit 1 starts in the drilling direction R, whereby the body 2 of the drill bit 1 and the pilot bit 13 fastened thereto start rotating in the drilling direction R.
  • the ring bit 17 rotates in the opposite direction in relation to the drilling direction R compared to the body 2 and pilot bit 13 of the drill bit 1, the ring bit 17 starts, by the mutual interaction of the curved guide groove 22 on its rear surface and the curved guide protrusion 23 on the reamer blade wing 21 placed in the guide groove 22, to push the reamer blade wings 21 outwards from the reamer blade wing spaces 20.
  • the ring bit 17 pushes the reamer blade wings 21 outwards from the reamer blade wing spaces 20 for as long as the curved guide protrusion 23 in the reamer blade wing 21 is at the outmost end of the curved guide groove 22 in the rear surface 17b of the ring bit 17, that is, the second end 22", whereby the guide protrusion 23 ends up in the locking recess 24 at the second end 22" of the guide groove 22.
  • the reamer blade wings 21 are at their outmost position, that is, the second end 21" of the reamer blade wings 21 extends past the largest outer diameter of the drill bit 1, the ring bit 17 and reamer blade wings 21 are locked immovably in place in relation to each other, that is, the ring bit 17 and the reamer blade wings 21 do not move in relation to each other.
  • Figure 4 does not show the reamer blade wings 20.
  • the interlocking of the ring bit 17 and reamer blade wings 21 in practise also results in the immovable locking of the ring bit 17 and reamer blade wings 21 also in relation to the body 2 and pilot bit 13 of the drill bit 1.
  • the ring bit 17 and reamer blade wings 21 also start to rotate together with the body 2 and pilot bit 13 of the drill bit 1 to the intended drilling direction R. In this position, the reamer blade wings 21 break or enlarge the edges of the hole being drilled outside the dimension that the ring bit 17 of the drill bit 1 has drilled so that the protective pipe 10 that the drill bit 1 pulls with it fits to run in the hole being drilled.
  • the reamer blade wings 21 may also be turned outwards in advance by the ring bit 17, whereby the protective pipe 10 may support itself against the reamer blade wings 21 before the friction caused by the walls of the hole being drilled forces the protective pipe 10 and the flange 12 at its mouth 11 to be supported to the support surfaces 7a on the side 6 of the drill bit 1, as referred to in the above.
  • the ring bit 17 may freely rotate in the opposite direction in relation to the drilling direction R by approximately 70 degrees, for example, before the ring bit 17 and reamer blade wings 21 are locked in place. In practise, this means that the ring bit 17 and reamer blade wings 21 are locked in place almost immediately as drilling starts, in practise often even before the drill bit 1 touches the surface to be drilled.
  • the intention is to pull the drill bit 1 out of the drilled hole.
  • rotation of the drill bit 1 is started in the opposite direction in relation to the drilling direction R, whereby the body 2 of the drill bit 1, and the pilot bit 13 fixed thereto, start to rotate in the opposite direction in relation to the drilling direction R.
  • the ring bit 17, in turn, as a result of the associated moment of inertia of the mass and the aforementioned clearances between the body 2 and ring bit 17 of the drill bit 1, and the pilot bit 13 and ring bit 17, at first rotates to the drilling direction R, so the opposite direction in relation to the body 2 of the drill bit 1 and the pilot bit 13 fastened to it.
  • the curved guide protrusion 23 on the reamer blade wing 21 detaches from the locking recess 24 in the guide groove 22 on the rear surface 17b of the ring bit 17, and the ring bit 17 starts, by the mutual interaction of the curved guide groove 22 on its rear surface 17b and the guide protrusion 23 on the reamer blade wing 21 placed in the guide groove 22, to push the reamer blade wings 21 back inwards into the reamer blade wing spaces 20.
  • the ring bit 17 pushes the reamer blade wings 21 inwards into the reamer blade wing spaces 20 for as long as the curved guide protrusion 23 on the reamer blade wing 21 is at the inmost end of the curved guide groove 22 in the rear surface of the ring bit 17, that is, the first end 22'.
  • the reamer blade wings 21 are at their inmost position substantially in their entirety inside the reamer blade wing spaces 20, and the ring bit 17 and reamer blade wings 21 are again locked immovably in place in relation to each other, that is, the ring bit 17 and the reamer blade wings 21 no longer move in relation to each other.
  • the ring bit 17 and reamer blade wings 21 are in practise also locked immovably in place also in relation to the body 2 and pilot bit 13 of the drill bit 1, whereby the ring bit 17 and reamer blade wings 21 also start to rotate with the body 2 and pilot bit 13 of the drill bit 1 into the opposite direction in relation to the intended drilling direction R. Because the reamer blade wings 21 are now substantially in their entirety inside the reamer blade wing spaces 20, the drill bit 1 may be pulled out in its entirety from the drilled hole, because the drill bit 1 has room to pass through in its entirety the space restricted by the flange 12 at the mouth 11 of the protective pipe 10.
  • the reamer blade wings 21 may be manufactured of a plurality of different materials.
  • the reamer blade wings 21 may be manufactured of the same material as the pilot bit and ring bit.
  • the reamer blade wings 21 may also be manufactured of a different material than the pilot bit and ring bit, whereby the service life of the reamer blade wings may differ from that of the pilot bit and ring bit.
  • the reamer blade wings 21 may also be substantially single-use ones, whereby the reamer blade wings 21 may be replaced with new ones after drilling one or a few holes. The replacement of the reamer blade wings 21 takes place easily by removing the pilot bit 13 and ring bit 17, making access possible to the reamer blade wing spaces 20 and the reamer blade wings 21 therein.
  • the reamer blade wings 21 may also be reusable, whereby the portion of the reamer blade wings 21, machining the outer circle of the hole being drilled may resharpened.
  • the drill bit 1 according to the embodiment described in the above is specifically intended for drilling a hole where a protective pipe 10 is meant to be installed.
  • the drill bit 1 of the type described may also be used for enlarging a hole already drilled, for example, whereby it is not necessary at all for the drill bit 1 to have the support surfaces 7a for pulling the protective pipe 10 into the hole being drilled.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)

Claims (11)

  1. Trépan (1) comprenant :
    un corps (2) du trépan (1),
    un trépan pilote (13) pour forer une partie centrale d'un trou à forer,
    un trépan annulaire (17) pour forer un cercle externe du trou qui est foré, et des ailes de lame d'alésoir (21) se déplaçant vers l'extérieur à partir d'un côté (6) du corps (2) du trépan (1), qui sont agencées, lorsque le trépan (1) tourne dans la direction de forage prévue, pour se déplacer vers l'extérieur à partir du côté (6) du corps (2) du trépan (1), s'étendant au-delà du plus grand diamètre externe du corps (2) du trépan (1) pour agrandir le trou foré, et lorsque le trépan (1) tourne dans la direction opposée, pour revenir à l'intérieur du plus grand diamètre externe du corps (2) du trépan (1) pour retirer le trépan (1) du trou foré, caractérisé en ce que le trépan annulaire (17) est adapté pour guider le déplacement des ailes de lame d'alésoir (21).
  2. Trépan selon la revendication 1, caractérisé en ce que le corps (2) du trépan (1) comprend une face (4) dirigée vers le trou à forer, et une surface arrière (5) dirigée à distance du trou à forer également, s'étendant entre elles, un côté (6) du trépan (1), comprenant, dans la direction de l'axe central (C) du trépan (1), une partie avant (6a) positionnée sur le côté de la face (4), et une partie arrière (6b) positionnée sur le côté de la surface arrière (5), dont le diamètre externe est plus grand que le diamètre externe de la partie avant (6a), moyennant quoi au niveau de la jonction de la partie avant (6a) et de la partie arrière (6b), se forme une face (7a) dirigée vers le trou à forer, qui établit une surface de support pour un tuyau de protection (10) tiré dans le trou foré avec le trépan (1).
  3. Trépan (1) selon la revendication 1, caractérisé en ce que le corps (2) du trépan (1) comprend une face (4) dirigée vers le trou à forer, et une surface arrière (5) dirigée à distance du trou à forer, et une tige (3) du trépan (1), agencée en relation avec la surface arrière (5), au moyen de laquelle le trépan (1) peut être fixé en relation avec un dispositif de forage, et en ce que le trépan pilote (13) comprend une partie de trépan (14) qui a une face (14a) dirigée vers le trou à forer, et une surface arrière (14b) dirigée vers le corps (2) du trépan (1) et en relation avec cette dernière, une partie de tige (15) grâce à laquelle le trépan pilote (13) peut être fixé de manière détachable au corps du trépan (1) et en ce que le trépan annulaire (17) est agencé autour de la partie de tige (15) du trépan pilote (13), entre la surface arrière (14b) de la partie de trépan (14) du trépan pilote (13) et la face (4) du corps (2) du trépan (1) et comprend une face (17a) dirigée vers le trou à forer et une partie arrière (17b) dirigée vers la face (4) du corps (2) du trépan (1).
  4. Trépan selon la revendication 3, caractérisé en ce que le corps (2) du trépan (1) comprend un évidement (8) dirigé à partir de la face (4) du corps (2) vers la surface arrière (5) et comprenant un filetage interne (9) pour recevoir la partie de tige (15) du trépan pilote (13) et en ce que le trépan pilote (13) comprend un filetage externe (16) compatible avec ledit filetage interne, moyennant quoi le trépan pilote (13) est adapté pour être fixé au corps (2) du trépan (1) par lesdits filetages (9, 16).
  5. Trépan selon l'une quelconque des revendications précédentes, caractérisé en ce que le trépan (1) comprend des espaces d'aile de lame d'alésoir (20) ouverts vers l'extérieur à partir du côté (6) du corps (2) du trépan (1) et une aile de lame d'alésoir (21) placée dans chaque espace d'aile de lame d'alésoir (20) et agencée de manière mobile par rapport à ce dernier, moyennant quoi lorsque le trépan (1) tourne dans la direction de forage prévue, l'aile de lame d'alésoir (21) est agencée pour se déplacer au moins partiellement hors de l'espace d'aile de lame d'alésoir (20) à travers une seconde extrémité (20") de l'espace d'aile de lame d'alésoir (20), ouvert du côté du corps (2) du trépan (1), à l'extérieur du plus grand diamètre externe du trépan (1) pour agrandir le trou foré et lorsque le trépan (1) tourne dans la direction opposée, pour revenir sensiblement dans son intégralité vers l'espace d'aile de lame d'alésoir (20).
  6. Trépan selon la revendication 5, caractérisé en ce que des espaces d'aile de lame d'alésoir (20) sont agencés sur la face (4) du corps (2) du trépan (1), moyennant quoi la surface arrière (17b) du trépan annulaire (17) est agencée pour relier l'espace d'aile de lame d'alésoir (20) dans la direction indiquée par la face (4) du corps (2) du trépan (1).
  7. Trépan selon l'une quelconque des revendications précédentes, caractérisé en ce que le trépan annulaire (17) est adapté pour guider le déplacement des ailes de lame d'alésoir (21) hors des espaces d'aile de lame d'alésoir (20) et le retour dans les espaces d'aile de lame d'alésoir (20).
  8. Trépan selon l'une quelconque des revendications 3 à 7, caractérisé en ce que le trépan annulaire (17) est adapté autour de la partie de tige (15) du trépan pilote (13) entre la partie de trépan (14) du trépan pilote (13) et le corps (2) du trépan (1) de sorte qu'il y a des jeux entre la surface arrière (14b) de la partie de trépan (14) du trépan pilote (13) et la face (17a) du trépan annulaire (17) ainsi que la face (4) du corps (2) du trépan (1) et la surface arrière (17b) du trépan annulaire (17) qui permet au trépan annulaire (17) de tourner en rotation par rapport à la partie de tige (15) du trépan pilote (13) et en ce que la surface arrière (17b) du trépan annulaire (17) comprend un élément de guidage guidant le déplacement de chaque aile de lame d'alésoir (21), et chaque aile de lame d'alésoir (21) comprend un élément antagoniste en relation avec un élément de guidage correspondant pour agencer l'aile de lame d'alésoir (21) en relation avec le trépan annulaire (17), moyennant quoi ladite rotation du trépan annulaire (17) en relation à la partie de tige (15) du trépan pilote (13) est adaptée pour guider le déplacement des ailes de lame d'alésoir (21) hors des espaces d'aile de lame d'alésoir (20) et le retour dans les espaces d'aile de lame d'alésoir (20).
  9. Trépan selon la revendication 8, caractérisé en ce que ledit élément de guidage du trépan annulaire (17) est une rainure incurvée (22) formée dans la surface arrière (17b) du trépan annulaire (17) et s'étendant à partir de la direction du cercle interne jusqu'à la direction du cercle externe du trépan annulaire (17) et en ce que ledit élément antagoniste de l'aile de lame d'alésoir (21) est une saillie de guidage incurvée (23) formée dans la surface de l'aile de lame d'alésoir (21), dirigée vers le trépan annulaire (17) qui peut s'adapter dans la rainure incurvée (22) formée dans la surface arrière (17b) du trépan annulaire (17).
  10. Trépan selon la revendication 9, caractérisé en ce que la rainure incurvée (22) formée dans la surface arrière (17b) du trépan annulaire (17) comprend une rainure de verrouillage (24), formée au niveau de l'extrémité de la rainure incurvée (22) sur le côté du cercle externe du trépan annulaire (17), grâce à laquelle le trépan annulaire (17) et chaque aile de lame d'alésoir (21) sont adaptés pour se verrouiller entre eux dans une position telle que chaque aile de lame d'alésoir (21) est agencée pour s'étendre vers sa position la plus extérieure hors du plus grand diamètre du trépan (1).
  11. Trépan selon la revendication 9, caractérisé en ce que lorsque l'on commence le forage, le trépan annulaire (17) est agencé pour tourner, suite au moment d'inertie associé de la masse, dans la direction opposée par rapport à la direction de forage prévue (R), moyennant quoi le trépan annulaire (17) est agencé pour pousser les ailes de lame d'alésoir (21) vers l'extérieur des espaces d'aile de lame d'alésoir (20) par l'interaction mutuelle de la rainure de guidage incurvée (22) sur la surface arrière (17b) du trépan annulaire (17) et la saillie de guidage incurvée (23) sur l'aile de lame d'alésoir (21) placée dans la rainure de guidage (22).
EP18214476.6A 2017-12-27 2018-12-20 Trépan Active EP3505717B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL18214476T PL3505717T3 (pl) 2017-12-27 2018-12-20 Narzędzie wiertnicze

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI20176174A FI20176174A1 (fi) 2017-12-27 2017-12-27 Porakruunu

Publications (2)

Publication Number Publication Date
EP3505717A1 EP3505717A1 (fr) 2019-07-03
EP3505717B1 true EP3505717B1 (fr) 2020-11-25

Family

ID=64746370

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18214476.6A Active EP3505717B1 (fr) 2017-12-27 2018-12-20 Trépan

Country Status (5)

Country Link
EP (1) EP3505717B1 (fr)
CN (1) CN109973018B (fr)
ES (1) ES2854996T3 (fr)
FI (1) FI20176174A1 (fr)
PL (1) PL3505717T3 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI130094B (en) * 2019-08-26 2023-01-31 Mincon Nordic Oy Boring unit
CN111206884A (zh) * 2020-03-21 2020-05-29 山东源运通矿山装备科技有限公司 钎杆连接套
EP4198253B1 (fr) * 2021-12-15 2024-04-17 BAUER Maschinen GmbH Outil de forage et procédé de production d'un forage dans le sol

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2316964B (en) * 1996-09-04 2000-06-07 Bulroc Drill means
KR100416209B1 (ko) * 2002-01-29 2004-01-28 임병덕 슬라이드 방식으로 출입하도록 구성한 밀폐형 해머비트
CN2685530Y (zh) * 2004-03-09 2005-03-16 伍利钱 扩孔钻头
KR100685386B1 (ko) * 2004-09-03 2007-02-22 임병덕 인-라인 확장 윙을 갖는 시추공 굴착장치 및 그 구동방법
GB0821564D0 (en) * 2008-11-26 2008-12-31 Bulroc U K Ltd Drill means
KR101658658B1 (ko) * 2014-04-30 2016-09-23 (주)씨엔피텍 굴착용 비트
FI127402B (fi) * 2015-09-14 2018-05-15 Mincon Nordic Oy Poralaite

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
PL3505717T3 (pl) 2021-07-12
CN109973018B (zh) 2021-07-30
ES2854996T3 (es) 2021-09-23
FI20176174A1 (fi) 2019-06-28
EP3505717A1 (fr) 2019-07-03
CN109973018A (zh) 2019-07-05

Similar Documents

Publication Publication Date Title
EP3505717B1 (fr) Trépan
TWI361854B (fr)
JP6208744B2 (ja) 穿孔及び穿孔ライニングのための装置
EP2408996B1 (fr) Ensemble de forage de fond
EP2209964A1 (fr) Trépan à percussion pour forage de roches et procédé de fabrication d'un tel trépan
SE522135C2 (sv) Borrverktyg för sänkborrning
EP2198110B1 (fr) Ensemble foret
JP2009068190A (ja) 掘削工具、掘削ビット及びデバイス
WO2008100194A2 (fr) Trépan et appareil de forage unique
EP3030741A2 (fr) Appareil de fond et procédé associé
KR101961701B1 (ko) 회수형 천공비트
US2239461A (en) Rock boring bit
CN101589206B (zh) 钻头和一步到位的钻孔设备
CA3158682A1 (fr) Trepan pour forer la terre et d'autres materiaux durs
EP3617439B1 (fr) Trépan à rainures de boues incurvées
CN113006703A (zh) 一种耐磨的pdc-牙轮复合钻头
AU2008211808B2 (en) Drilling tool
WO2016016657A2 (fr) Outil de fond de trou, procédé et ensemble
CN205840785U (zh) 一种开岩钻头
EP3175077B1 (fr) Procédé pour assembler un appareil de forage de fond-de-trou pour un forage par tuyau en matière plastique et appareil de forage de fond-de-trou
JP5820573B2 (ja) 掘削工具
KR20090078158A (ko) 일체형 천공비트 장치
EP0402337A2 (fr) Outil de perçage
RU2507362C1 (ru) Расширитель раздвижной

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

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

17P Request for examination filed

Effective date: 20191231

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: 20200625

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: AT

Ref legal event code: REF

Ref document number: 1338504

Country of ref document: AT

Kind code of ref document: T

Effective date: 20201215

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602018010114

Country of ref document: DE

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: FI

Ref legal event code: FGE

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

REG Reference to a national code

Ref country code: NO

Ref legal event code: T2

Effective date: 20201125

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20201125

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: 20210226

Ref country code: RS

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: 20201125

Ref country code: PT

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: 20210325

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

Ref country code: LV

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: 20201125

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: 20210325

Ref country code: BG

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: 20210225

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG9D

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

Ref country code: HR

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: 20201125

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

Ref country code: RO

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: 20201125

Ref country code: LT

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: 20201125

Ref country code: SK

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: 20201125

Ref country code: SM

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: 20201125

Ref country code: EE

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: 20201125

Ref country code: CZ

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: 20201125

RAP2 Party data changed (patent owner data changed or rights of a patent transferred)

Owner name: ROBIT PLC

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602018010114

Country of ref document: DE

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

Ref country code: MC

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: 20201125

Ref country code: DK

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: 20201125

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20201231

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2854996

Country of ref document: ES

Kind code of ref document: T3

Effective date: 20210923

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

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: 20201220

Ref country code: AL

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: 20201125

Ref country code: NL

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: 20201125

26N No opposition filed

Effective date: 20210826

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

Ref country code: SI

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: 20201125

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: 20210325

Ref country code: TR

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: 20201125

Ref country code: MT

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: 20201125

Ref country code: CY

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: 20201125

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

Ref country code: MK

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: 20201125

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

Ref country code: BE

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

Effective date: 20201231

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: LI

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

Effective date: 20211231

Ref country code: CH

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

Effective date: 20211231

REG Reference to a national code

Ref country code: AT

Ref legal event code: UEP

Ref document number: 1338504

Country of ref document: AT

Kind code of ref document: T

Effective date: 20201125

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230522

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

Ref country code: GB

Payment date: 20231215

Year of fee payment: 6

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

Ref country code: SE

Payment date: 20231218

Year of fee payment: 6

Ref country code: NO

Payment date: 20231218

Year of fee payment: 6

Ref country code: IT

Payment date: 20231218

Year of fee payment: 6

Ref country code: IE

Payment date: 20231218

Year of fee payment: 6

Ref country code: FR

Payment date: 20231215

Year of fee payment: 6

Ref country code: FI

Payment date: 20231214

Year of fee payment: 6

Ref country code: DE

Payment date: 20231218

Year of fee payment: 6

Ref country code: AT

Payment date: 20231218

Year of fee payment: 6

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

Ref country code: ES

Payment date: 20240118

Year of fee payment: 6

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

Ref country code: PL

Payment date: 20231207

Year of fee payment: 6