EP2628572B1 - Burin - Google Patents

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Publication number
EP2628572B1
EP2628572B1 EP13155007.1A EP13155007A EP2628572B1 EP 2628572 B1 EP2628572 B1 EP 2628572B1 EP 13155007 A EP13155007 A EP 13155007A EP 2628572 B1 EP2628572 B1 EP 2628572B1
Authority
EP
European Patent Office
Prior art keywords
axis
chisel
ribs
deflection
rib
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
EP13155007.1A
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German (de)
English (en)
Other versions
EP2628572A1 (fr
Inventor
Jens Schneider
Karsten Brandenburg
Zsolt Kosa
Lajos Tóth
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.)
Hilti AG
Original Assignee
Hilti AG
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 Hilti AG filed Critical Hilti AG
Publication of EP2628572A1 publication Critical patent/EP2628572A1/fr
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Publication of EP2628572B1 publication Critical patent/EP2628572B1/fr
Active legal-status Critical Current
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D17/02—Percussive tool bits
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D3/00—Hand chisels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/211—Cross-sections of the tool
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/305—Twisted part of a chisel or percussive non-drilling tool bit

Definitions

  • the present invention relates to a chisel, in particular for a hand-held machine tool.
  • Generic chisel according to the preamble of claim 1 are for example from the WO 9740965 A and the DE 1846211 U known.
  • Chisels are to divide a subsoil into several fragments.
  • a user attaches the chisel to the ground.
  • the chisel first penetrates along its axis into the ground.
  • the chisel displaces material while building up compressive stresses. If the stresses exceed the load capacity of the substrate, it breaks up around the chisel. If, however, the ground resists the tensions, the chisel clamps itself into the underground. The user can only pull the chisel out of the ground with great physical effort.
  • the chisel according to the invention has a lower tendency to jam in a substrate.
  • the bit has an impact face, a shank, a spreader and a tip sequentially on an axis in the direction of impact.
  • the spreader has distributed around the axis arranged a plurality of ribs extending along the axis.
  • the ribs are each wave-shaped with a tangential to the axis deflection. The tangential deflection is perpendicular to the radial direction and perpendicular to the axis.
  • the tangential deflection may be curved, eg, circular along a circumferential direction about the axis or straight along a tangent to the circumferential direction or a combination of the circular and rectilinear deflections.
  • the waveform unlike a helix, causes the rib to be deflected alternately circumferentially and circumferentially about the axis.
  • the alternating deflection causes shear stresses in the ground which reduce a tendency of the bit to jam.
  • the amplitude of the deflection is advantageously limited.
  • the amplitude denotes the distance between two consecutive extrema of the deflection.
  • the amplitude of the deflection is advantageously smaller than a width of the rib.
  • the amplitude of a Deflection in a circumferential direction about the axis may be equal to an amplitude of the deflection against the circumferential direction.
  • the amplitude of the deflection can be between 5 degrees and 20 degrees.
  • At least one of the ribs may be deflected to itself in parallel in a circumferential direction about the axis through the tangential undulating deflection.
  • a shape of a cross section perpendicular to the axis changes continuously along the axis.
  • At least one of the ribs may be rotated in a circumferential direction about the axis through the tangential undulating deflection.
  • a cross section perpendicular to the axis rotates along the axis while maintaining its shape alternately in the circumferential direction and against the circumferential direction.
  • the deflection causes the rib to tilt relative to the axis 15.
  • the tilt varies in synchronism with the waveform.
  • the inclination is advantageous to prevent jamming.
  • a large amount of slope proves to be a hindrance to a high mining efficiency.
  • the periodically changing angle (34) along the axis (2) assumes a minimum and maximum value. The smallest value is preferably in the range between -20 degrees and -3 degrees and the largest value is between 3 degrees and 20 degrees.
  • the bit preferably has at least three wave trains.
  • Fig. 1 1 shows an exemplary chisel 1 in a side view .
  • the chisel 1 has a tip 3 lying on an axis 2 at one end and a striking surface 4 at an opposite end .
  • a shock applied by a striking body 5, 56 of a handheld power tool 6 to the striking surface 4 becomes in the direction of impact 7 along the axis 2 of the club face 4 in the top 3 forwarded.
  • the striking surface 4 is formed by a front side of a shaft 8 of the chisel 1 .
  • the end face is oriented substantially perpendicular to the axis 2 and spherical or flat.
  • the preferably coaxial with the axis 2 formed shaft 8 has a prismatic, such as hexagonal, or cylindrical, for example, circular cylindrical, cross-section.
  • a portion of the shaft 8 immediately adjacent to the striking surface 4 may be formed as a spigot 9 for a hammer drill 6 or a chisel hammer.
  • groove-shaped recesses 10 are introduced along the axis 2 in the shaft 8 , in which locking elements of the power tool 6 can engage.
  • an annular collar 11 may be provided on the shaft 8 . The radially projecting collar 11 can be engaged behind by a stirrup of the hammer drill 6 for axially securing the chisel 1 .
  • the tapering in the direction of impact 7 tip 3 is preferably formed symmetrically to the axis 2 .
  • the tip 3 is pyramidal or conical.
  • an expansion body 12 is arranged, which reduces jamming of the bit 1 in a substrate.
  • the expansion body 12 is made of the same material as the entire tip 3, preferably made of a steel.
  • Fig. 2 illustrates a cross section through the exemplary expansion body 12 in the plane II-II, Fig. 3 a cross section in the plane III-III and Fig. 4 a cross section in the plane IV-IV.
  • Level III-III lies midway between levels II-II and IV-IV.
  • the exemplary rod-shaped spreading body 12 has a plurality of longitudinal axis 2 extending ribs 13, which are arranged distributed around the axis. 2 The ribs 13 preferably all start from the tip 3.
  • the ribs 13 are preferably arranged at equidistant angles 15 about the axis 2 . In the exemplary illustrated embodiment, the ribs 13 are identical and formed parallel to each other.
  • the ribs 13 are wave-shaped with a tangential to the axis 2 changing deflection. Characteristic of the waveform are local minima 16 and maxima 17 of the deflection, which occur along the axis 2 . Starting from a minimum 16 , the deflection of the rib 13 continuously increases in the circumferential direction 18 up to the following maximum 17, running along the direction of impact 7. In the illustration of the figures, the circumferential direction 18 is viewed in the direction of impact 7 looking counterclockwise. From the maximum 17 , the deflection of the rib 13, running continuously along the direction of impact 7 , decreases continuously counter to the circumferential direction 18 up to the next minimum 16. The deflection tangential to the axis 2 changes, for example, sinusoidally along the axis 2.
  • the average deflection of the rib 13 is preferably equal to zero, the deflections in the circumferential direction 18 and the deflections counter to the circumferential direction 18 are the same size.
  • the minima 16 of a rib 13 are all in alignment along the axis 2.
  • the minima 16 of a rib 13 are offset from each other along the axis 2 , but otherwise have the same angular position 19 relative to the axis 2.
  • Equally, preferably all maxima 17 are the The rib 13 in alignment with the axis 2 at an angular position 20.
  • the symmetrical structure promotes a uniform introduction of forces in and against the circumferential direction 18 and improved behavior with respect to the jamming of the bit 1 in the ground.
  • the extremities 16, 17 are preferably at a constant distance 21 along the axis 2.
  • the ribs 13 are thus over a longer portion mirror-symmetrical to a plane perpendicular to the axis 2, for example one of the levels II-II or IV-IV, which by one of the minima 16 or one of the maxima 17 run.
  • the number of ribs 13 is exemplary, preferably between three ribs 13 for narrow chisel 1 and six ribs 13 for thick chisel 1 are provided.
  • the ribs 13 are preferably distributed uniformly about the axis 2 .
  • the structure is rotationally symmetric, so that the forces in and against the circumferential direction 18 are equal.
  • the ribs 13 can all have the same shape, resulting in a fourfold rotational symmetry in the construction shown by way of example.
  • diametrically opposed ribs are the same but different formed to their adjacent ribs. The rotational symmetry is thus only appris Congress Congressig with four ribs.
  • the ribs 13 of the exemplary expansion body 12 each have three minima 16 and three maxima 17, that is three wave trains 22.
  • the number of extremes 17, 16 depends on the length 14 of the expansion body 12 .
  • a distance 21 of one extremum 16, 17 to a next extremum 17, 16 is preferably in the range between 1 cm and 3 cm.
  • the bit 1 typically penetrates up to 10 cm when working on a substrate and with more than one wave 22 .
  • the rib 13 has a back 23 and adjacent to the back 23 against a circumferential direction 18 adjacent a first flank and in the circumferential direction 18 adjacent a second flank.
  • a surface of the rib 13 is composed largely of a circumferentially oriented 18 first side surface 24, the back 23 and a counter to the circumferential direction 18 facing second side surface 25 together.
  • the first side surface 24 has exclusively in the circumferential direction 18.
  • the first side surface 24 is inclined in the circumferential direction 18 only in the direction of the axis 2 .
  • the first side surface 24 is contiguous and extends over the entire axial dimension 14 of the rib 13.
  • the second side surface 25 has, as a counterpart to the first side surface 24 only against the circumferential direction 18.
  • the second side surface 25 increases in the circumferential direction 18 everywhere, ie away from the axis 2.
  • the second side surface 25 extends along the entire length 14 of the rib 13 and is continuous.
  • the second side surface 25 extends along the axis 2 preferably parallel to the first side surface 24.
  • a curvature in the direction of impact 7 of the first side surface 24 is equal to the curvature in the direction of impact 7 of the second side surface 25.
  • a width 26 of the rib 13 is constant along the axis 2 , The width 26 can be determined quantitatively at half the height 27 of the rib 13 .
  • the half height 27 is half the radial distance between the back 23 and foot 28 or half the arithmetic mean of outer diameter 29 and inner diameter 30.
  • the coverage of the circumference by the plurality of ribs 13 is at half height 27 between 90 degrees and 150 degrees.
  • the width 26 of the ribs 13 in the spreader body 12 with four ribs 13 is at an angle between 22.5 degrees and 37.5 degrees.
  • the rib 13 preferably has a mirror-symmetrical profile. Cross sections of the rib 13 perpendicular to the axis 2 are mirror-symmetrical to a plane passing through the back 23 mirror axis 31 . From the back 23, extending in the radial direction, is a Curvature along the radial direction of the first side surface 24 mirror-symmetrical to (the negative) of a curvature along the radial direction of the second side surface 25th
  • the back 23 may be planar or, as in the example shown, linear.
  • the ridge 23 extends tangentially to the circumferential direction 18.
  • the two side surfaces 24, 25 adjoining the ridge 23 fall in or against the circumferential direction 18 from the ridge 23 in the direction of the axis 2 .
  • the spine 23 is made up of the points at the surface of the rib 13, which have in the planes perpendicular to the axis 2 of the largest radial distance to the axis. 2
  • a distance of the back 23 to the axis 2 preferably decreases continuously along the direction of impact 7, in particular in the region of the tip 3 , the back 23 monotonically approaches the axis 2 .
  • the distance 23 may alternatively increase and decrease periodically along the axis 2 .
  • the points of the surface closest to the axis 2 form a foot 28 of the rib 13.
  • a distance 30 of the foot 28 to the axis 2 is preferably constant over the entire length 14 of the expansion body 12 .
  • the foot 28 of a rib 13 can pass into the foot 28 of a circumferentially 18 adjacent rib 13 .
  • the arranged around the axis 2 ribs 13 shape a non-convex shape of the spreader 12.
  • the recessed in the radial direction relative to the back 23 side surfaces 24, 25 define between the ribs 13 extending gears 32.
  • the gears 32 are located within a convex envelope of the Spreader body 12.
  • An outer diameter 29, given by the double distance of the back 23 from the axis 2, is preferably at least 50% larger than an inner diameter 30, given by twice the distance of the foot 28 from the axis 2, the spreader 12.
  • the ribs 13 can protrude radially from a soul 33 .
  • the core 33 is a convex solid body, eg a body of revolution or cylinder concentric with the axis 2 .
  • the first side surface 24 is corrugated corresponding to the rib 13 .
  • An angle 34 between the first side surface 24 and the axis 2 changes alternately along the axis 2.
  • the angle 34 assumes in particular negative and positive values, whereby the structure significantly different from a helix with a constant angle and a fixed sense of rotation.
  • the angle 34 changes by way of example sinusoidally along the axis 2.
  • the maximum value of the angle 34 is between 3 degrees and 20 degrees, the minimum value is between 3 degrees and 20 degrees.
  • the first side surface 24 is divided along the axis 2 into alternately successive first portions 35 and second portions 36 .
  • the first side surface 25 is in the first Sections 35 inclined at a positive angle 34 to the axis 2 .
  • the first side surface 25 increases following the direction of impact 7 in the circumferential direction 18 .
  • the first side surface 25 inclined in the first sections 35 and their perpendiculars 37 point in the direction of impact 7.
  • the second sections 36 are opposite to the first sections 35 .
  • the first side surface 24 occupies a negative angle 34 to the axis 2 .
  • the first side surface 24 is opposite to the circumferential direction 18 .
  • the first side surface 24 and its perpendiculars 38 point opposite to the direction of impact 7 towards the striking surface 4.
  • the tangential deflection of the rib 13 takes place for example by a parallel offset.
  • the first side surface 24 is parallel at a minimum 16 to itself at a maximum 17 and preferably all other cross sections perpendicular to the axis 2 .
  • the inclination 34 of the first side surface 24 to the axis 2 changes repeatedly along the axis 2, but is constant in the radial direction.
  • the parallel offset can, for example, take place along a straight line 39 , which is perpendicular to the axis 2 and tangentially bears against a point of the back 23 of the rib 13 .
  • the location is, for example, in the middle 40 (level III-III) between a minimum 16 and a maximum 17.
  • Each of the ribs 13 is associated with its own this straight line 39 , which are equal to the angle 15 between the ribs 13 also arranged at this angle 15 about the axis 2 .
  • the parallel offset takes place for the different ribs 13, in each case by a direction 15 rotated by the direction.
  • the profile of the spreading body 12 changes along the axis 2.
  • the cross-sections through the expander 12 at the minima 16, the center 40 and the peaks 17 vary in their shape.
  • the cross sections can not be brought into coincidence by a rotation about the axis 2 .
  • the cross-section in the middle 40 is, for example, mirror-symmetrical to the mirror axis 31.
  • the cross-sections through the minima 16 and the maxima 17, however, have no mirror symmetry, but may be designed mirror-symmetrically to each other.
  • Fig. 4 shows in addition to the cross-section by the maximum of 17 has a cross-section through the minimum 16. In particular, none of the ribs intersect 13.
  • the amplitude of the displacement between each two adjacent extrema 16, 17 is at most so large that an overlapping surface 41 of the cross-section of the rib 13 in one of the extrema 16, eg minimum, and the cross-section through the same rib 13 in the other of the extrema 17, eg Maximum, at least 25% of the cross-sectional area of the rib 13 is.
  • the amplitude of the deflection ie the distance from minimum 16 to maximum 17, is less than 75% of the width 26 of the rib 13.
  • the amplitude is at least so large that the overlapping surface 41 ( FIG. crossed hatching) of the cross sections of the rib 13 in the minimum 16 and at the maximum 17 is less than 75% of the cross-sectional area of the rib 13 .
  • the amplitude corresponds to about 25% of the width 26 of the rib 13th
  • the amplitude given as the angular offset 42 in and against the circumferential direction 18 between the maxima 17 and adjacent minima 16 is less than 30 degrees and preferably greater than 5 degrees.
  • the ribs 13 extend within the first portions 35 by at least 5 degrees and less than one twelfth of a revolution in the circumferential direction 18 to extend in the immediately adjacent second portion 36 by at least 5 degrees against the circumferential direction 18 .
  • the circulation in the opposite direction in the second section 36 is also limited to one-twelfth of one revolution.
  • the flights 32 between the ribs 13 have a straight line along the axis 2 extending core having a width 43 of at least 30 degrees.
  • the angular dimensions are preferably determined based on a contour line at half height 27 of the ribs 13 .
  • Fig. 5 to Fig. 7 show cross sections through an expansion body 12th Fig. 5 passes through a minimum of deflection corresponding to level II-II, Fig. 7 by a maximum of the deflection according to the level IV-IV and Fig. 6 by a level in the middle between minimum and maximum according to level III-III.
  • the expansion body 44 has a plurality of ribs 45, which are arranged distributed about the axis 2 .
  • the ribs 45 which extend along the axis 2, are wave-shaped, wherein the deflection takes place tangentially to the axis 2 .
  • the ribs 45 each have a contiguous first side surface 24, which has only in the circumferential direction 18 , and a contiguous second side surface 25 which faces only the circumferential direction 18 .
  • the two side surfaces 24, 25 form the surface of the rib 45 and preferably parallel to each other. For more details of the ribs 45 will be on description of the Fig. 2 to Fig. 4 directed.
  • the rib 45 is wound around the axis 2 .
  • the tangential deflection is effected by rotating the rib 45 about the axis 2.
  • Cross-sections perpendicular to the axis 2 through the spreader 12 have the same shape; they can be turned by turning the axis 2 in Covering be brought.
  • the cross section may, for example, be mirror-symmetrical to the mirror axes 31 of the ribs 45 .
  • Fig. 7 shows next to the cross section through the maximum 17 (hatched) a cross section through the minimum 16 (not hatched).
  • the angular offset 42 between the minimum 16 and the maximum 17 is less than 30 degrees.
  • the angular offset 42 is greater than 5 degrees.
  • the angular offset 42 is preferably equal in magnitude between all extremes 16, 17 (see Fig. 1 ).
  • a width 26 of the rib 45 is preferably greater than the angular offset 42.
  • the width 26 of the rib 45 is selected, for example, such that the ribs 45 cover at half height 27 between 90 degrees and 150 degrees of the circumference. In the exemplary expansion body 12 with four ribs 45 , the width 26 is between 22.5 degrees and 37.5 degrees.
  • the tangential deflection of the width 46 of the ribs 45 adapted limited to the extent that the ribs 45 do not cross each other.
  • the angle 34 between the first side surface 24 and the axis 2 increases in the radial direction to the back 23rd
  • Fig. 8 shows as an example of a chiseling hand tool machine schematically a hammer 6.
  • the hammer 6 has a tool holder 47, in which a spigot 9 of the chisel 1, can be used.
  • a primary drive of the hammer drill 6 forms a motor 48, which drives a striking mechanism 49 and an output shaft 50 .
  • a user can guide the hammer 6 by means of a handle 51 and take means of a system switch 52 to the hammer 6 in operation. In operation, the hammer 6 strikes the drill bit 53 in the impact direction 7 along the working axis 54 in a substrate.
  • the percussion mechanism 49 is, for example, a pneumatic percussion mechanism 49.
  • An exciter 55 and a racket 5 are movably guided in the striking mechanism 49 along the working axis 54 .
  • the exciter 55 is coupled via an eccentric 56 or a wobble finger to the motor 48 and forced to a periodic, linear movement.
  • An air spring formed by a pneumatic chamber 57 between exciter 55 and racket 5 couples a movement of the racket 5 to the movement of the exciter 55 at.
  • the racket 5 can strike directly on a rear end of the chisel 1 or indirectly transfer part of its momentum to the drill bit 53 via a substantially stationary intermediate racket 58 .
  • the percussion mechanism 49 and preferably the further drive components are arranged within a machine housing 59 .

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Earth Drilling (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)

Claims (10)

  1. Ciseau (1) comportant successivement sur un axe (2) dans une direction de percussion (7), une surface de percussion (4), une tige (8), un élément d'expansion (12) et une pointe (3), dans lequel l'élément d'expansion (12) contient plusieurs nervures (13, 45) s'étendant le long de l'axe (2) et agencées de manière répartie autour de l'axe (2),
    caractérisé en ce que les nervures (13, 45) sont respectivement formées de manière ondulée avec une déviation tangentielle à l'axe (2).
  2. Ciseau (1) selon la revendication 1, caractérisé en ce qu'une amplitude (42) de la déviation est plus petite qu'une largeur (26) de la nervure (13, 45).
  3. Ciseau (1) selon l'une des revendications précédentes, caractérisé en ce qu'une amplitude (42) d'une déviation de portions de la nervure (13, 45) s'étendant dans une direction circonférentielle (18) est égale à une amplitude (42) de la déviation de portions de la nervure (13, 45) s'étendant à l'opposé de la direction circonférentielle (18).
  4. Ciseau (1) selon l'une des revendications précédentes, caractérisé en ce que l'amplitude (42) de la déviation est comprise entre 5 degrés et 30 degrés.
  5. Ciseau (1) selon l'une des revendications précédentes, caractérisé en ce qu'au moins une des nervures (13) est déviée parallèlement à elle-même dans une direction circonférentielle (18) autour de l'axe (2) par la déviation ondulée tangentielle.
  6. Ciseau (1) selon la revendication 5, caractérisé en ce qu'une forme d'une section transversale per-pendiculaire à l'axe (2) varie de manière continue le long de l'axe (2).
  7. Ciseau (1) selon l'une des revendications 1 à 4 précédentes, caractérisé en ce qu'au moins une des nervures (45) est pivotée dans une direction circonférentielle (18) autour de l'axe (2), par la déviation ondulée tangentielle.
  8. Ciseau (1) selon la revendication 7, caractérisé en ce qu'une section transversale perpendiculaire à l'axe (2) tourne le long de l'axe (2) en conservant sa forme de manière alternée dans la direction circonférentielle (18) et à l'opposé de la direction circonférentielle (18).
  9. Ciseau (1) selon l'une des revendications précédentes, caractérisé en ce que le ciseau (1) comporte au moins deux trains d'ondulation (22).
  10. Ciseau (1) selon l'une des revendications précédentes, caractérisé en ce que la nervure (13, 45) est inclinée par rapport à l'axe (2) d'un angle (34) qui varie périodiquement le long de l'axe (2) et une plus petite valeur de l'angle (34) est comprise entre - 20 degrés et - 3 degrés et une plus grande valeur de l'angle (34) est comprise entre 3 degrés et 20 degrés.
EP13155007.1A 2012-02-15 2013-02-13 Burin Active EP2628572B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102012202300A DE102012202300A1 (de) 2012-02-15 2012-02-15 Meißel

Publications (2)

Publication Number Publication Date
EP2628572A1 EP2628572A1 (fr) 2013-08-21
EP2628572B1 true EP2628572B1 (fr) 2016-06-01

Family

ID=47748416

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13155007.1A Active EP2628572B1 (fr) 2012-02-15 2013-02-13 Burin

Country Status (10)

Country Link
US (1) US9221164B2 (fr)
EP (1) EP2628572B1 (fr)
JP (1) JP6104628B2 (fr)
CN (1) CN103252753B (fr)
AR (1) AR089953A1 (fr)
BR (1) BR102013003513A2 (fr)
DE (1) DE102012202300A1 (fr)
ES (1) ES2589279T3 (fr)
PL (1) PL2628572T3 (fr)
RU (1) RU2620526C2 (fr)

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USD752937S1 (en) * 2013-06-18 2016-04-05 Hilti Aktiengesellschaft Chisel
WO2015061370A1 (fr) 2013-10-21 2015-04-30 Milwaukee Electric Tool Corporation Adaptateur pour dispositifs d'outil électrique
USD756741S1 (en) * 2014-04-10 2016-05-24 Robert Bosch Gmbh Chisel
RU2606688C1 (ru) * 2015-10-05 2017-01-10 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Ставропольский государственный аграрный университет" Ручной инструмент ударного действия для разделения на части рулона сена
EP3222390A1 (fr) 2016-03-23 2017-09-27 HILTI Aktiengesellschaft Burin
EP3281748A1 (fr) * 2016-08-08 2018-02-14 HILTI Aktiengesellschaft Burin
CN106312941B (zh) * 2016-11-04 2018-09-11 杭州中杰工具有限公司 一种高效率组合式连体凿的制备方法
CA186295S (en) * 2018-09-07 2020-09-02 Arbortech Industries Ltd Chisel attachment for a power tool
USD921465S1 (en) 2019-05-06 2021-06-08 Milwaukee Electric Tool Corporation Mortar knife
USD923447S1 (en) * 2019-05-06 2021-06-29 Milwaukee Electric Tool Corporation Chisel
USD922842S1 (en) * 2019-05-06 2021-06-22 Milwaukee Electric Tool Corporation Chisel
USD922840S1 (en) 2019-05-06 2021-06-22 Milwaukee Electric Tool Corporation Chisel
USD922841S1 (en) * 2019-05-06 2021-06-22 Milwaukee Electric Tool Corporation Chisel

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Publication number Publication date
RU2013106398A (ru) 2014-08-20
EP2628572A1 (fr) 2013-08-21
JP6104628B2 (ja) 2017-03-29
DE102012202300A1 (de) 2013-08-22
AR089953A1 (es) 2014-10-01
US9221164B2 (en) 2015-12-29
BR102013003513A2 (pt) 2015-06-16
PL2628572T3 (pl) 2016-12-30
RU2620526C2 (ru) 2017-05-26
CN103252753B (zh) 2016-08-10
US20130205603A1 (en) 2013-08-15
JP2013166239A (ja) 2013-08-29
CN103252753A (zh) 2013-08-21
ES2589279T3 (es) 2016-11-11

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