EP3222390A1 - Burin - Google Patents

Burin Download PDF

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Publication number
EP3222390A1
EP3222390A1 EP16161839.2A EP16161839A EP3222390A1 EP 3222390 A1 EP3222390 A1 EP 3222390A1 EP 16161839 A EP16161839 A EP 16161839A EP 3222390 A1 EP3222390 A1 EP 3222390A1
Authority
EP
European Patent Office
Prior art keywords
longitudinal axis
webs
chisel
circumferential direction
web
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.)
Withdrawn
Application number
EP16161839.2A
Other languages
German (de)
English (en)
Inventor
Zsolt Kosa
Aviral Shrot
Carsten Peters
Attila Kenéz
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
Priority to EP16161839.2A priority Critical patent/EP3222390A1/fr
Priority to US16/084,058 priority patent/US11213939B2/en
Priority to CN201780018420.4A priority patent/CN108883524B/zh
Priority to EP17712130.8A priority patent/EP3433057B1/fr
Priority to PCT/EP2017/056617 priority patent/WO2017162623A1/fr
Publication of EP3222390A1 publication Critical patent/EP3222390A1/fr
Withdrawn legal-status Critical Current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
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/211—Cross-sections of the tool

Definitions

  • the present invention relates to a bit for mining mineral building materials, e.g. concrete, in particular a pointed chisel.
  • Pointed chisel with a point-shaped tip are for example from the US 6,981,496 US 9,221,164 . US 9,085,074 . CN 201922428 U . DE 1846211 U . DE 202013003876 U1 . DE 19914522 A1 . DE 828385 A and DE 463571 A known.
  • the chisels are driven by means of a pneumatic or electro-pneumatic chisel hammer into a subsoil.
  • the bit must withstand the impact forces, tensile forces and shear forces that occur.
  • increasing the cross-section or the core diameter increases the stability. However, this also increases the mass of the chisel, which requires a more powerful chisel hammer.
  • the bit according to the invention has a tip, a working portion and a striking surface and a longitudinal axis passing through the tip, the working portion and the striking surface.
  • the working section has a plurality of webs extending along the longitudinal axis and distributed in the circumferential direction about the longitudinal axis. In at least one of the webs, a dimension in the circumferential direction increases by at least one third, for example by at least half, by at least three quarters, with increasing distance to the longitudinal axis.
  • the webs are significantly slimmer ergo outward towards the longitudinal axis significantly wider.
  • a widest point is at least a third wider than the narrowest point.
  • the core contributes less than one third of the mass of the working section, ie its circular area is less than one third of the cross sectional area through the working section.
  • a height of the webs of the webs is preferably at least as large as half the core diameter, ie the ratio of the outer diameter of the Working section to the core diameter is greater than two to one, preferably greater five to two. The running between the webs grooves cut accordingly deep into the chisel.
  • the at least one web has a first, in a circumferential direction facing side surface and a second, facing the circumferential direction, side surface.
  • the first side surface and the second side surface are inclined to each other and apart with increasing distance to the longitudinal axis.
  • the side surfaces are preferably predominantly in the circumferential direction, i. the solder on the side surfaces and the direction of rotation enclose an angle of less than 45 degrees.
  • the inclined side surfaces may together constitute one third of the entire surface of the web, e.g.
  • the first side surface may form at least one sixth of the surface of the web and / or the second side surface at least one sixth of the surface of the web.
  • an angular dimension in the circumferential direction about the longitudinal axis can remain the same or increase with increasing distance to the longitudinal axis.
  • the working section has at least three webs.
  • the webs may be arranged distributed at identical angular intervals about the longitudinal axis.
  • One embodiment provides that an inclination of the webs with respect to the longitudinal axis is less than 10 degrees.
  • the webs can rotate around less than 90 degrees about the longitudinal axis.
  • An embodiment provides that the webs are wavy. Averaged over the longitudinal axis slope is preferably less than 5 degrees.
  • a groove is arranged between two adjacent webs.
  • the groove has a circumferentially decreasing dimension continuously in the direction of the longitudinal axis.
  • the opposite side surfaces of the webs are inclined to each other, preferably inclined at an angle of more than 10 degrees, preferably more than 20 degrees.
  • the webs can be made by rolling or impressing the grooves.
  • Fig. 1 shows a side view of an exemplary chisel 1 for removing concrete, rock or other mineral building materials.
  • the chisel 1 has a tip 2 at one end and an impact surface 3 at an end facing away from the tip 2.
  • the chisel 1 is attached with its tip 2 to a base 4 .
  • a percussion mechanism of a machine tool strikes in a striking direction 5 on the face 3 of the bit 1.
  • the tip 2 in the direction of impact 5 is driven into the ground.
  • a working portion 6 adjoining the tip 2 spreads the substrate 4 radially until the substrate 4 breaks due to the stresses.
  • the chisel 1 as a whole is a substantially rod-shaped body.
  • the bit 1 has a longitudinal axis 7 which runs through the tip 2 and the club face. 3
  • the following room descriptions axial, radial, radial direction and circumferential direction relate to this longitudinal axis 7.
  • the radial direction has its origin in the longitudinal axis 7 and points to the outside.
  • the bit 1 has its largest dimension along the longitudinal axis 7; the dimensions perpendicular to the longitudinal axis 7 are significantly lower.
  • the chisel 1 has, starting from the striking face 3 , along the longitudinal axis 7 successively the striking surface 3, a shank 8, a working section 6 and the tip 2.
  • the chisel 1 is described below divided into several parts, which have certain geometrical or functional differences. However, the parts preferably form a monolithic body without joining zones, this is especially true for the base body 9 consisting of the shaft 8 and the working section 6.
  • the base body 9 is made of a steel and the parts are not joined, so neither welded, soldered, screwed , etc ..
  • the tip 2 can be monolithically fabricated with the base body. 9
  • the exemplary bit 1 is a so-called pointed chisel.
  • the chisel 1 has exactly one tip 2, which lies on the longitudinal axis 7 .
  • the tip 2 is largely in the form of a body of revolution;
  • the tip 2 is conical, dome-shaped or pyramidal.
  • the mutually orthogonal dimensions of the tip 2 in the planes perpendicular to the longitudinal axis 7 are approximately equal.
  • the mutually orthogonal dimensions differ by less than a third.
  • the shaft 8 is a rod-shaped body.
  • a longitudinal axis of the shaft 8 coincides with the longitudinal axis 7 of the bit 1 , ie the shaft 8 is coaxial with the longitudinal axis 7.
  • the illustrated shaft 8 is prismatic with a hexagonal cross-section.
  • the prismatic shaft 8 may have, inter alia, a square, hexagonal, octagonal, circular or elliptical cross section.
  • the striking surface 3 is formed by an end face of the shaft 8 of the chisel 1 .
  • the striking surface 3 is oriented substantially perpendicular to the longitudinal axis 7 .
  • the striking surface 3 may be spherical or flat.
  • An insertion end 10 immediately adjoins the striking surface 3 .
  • the insertion end 10 is inserted into a tool holder of the machine tool.
  • the insertion end 10 may be provided with structures which serve to secure the bit 1 in the tool holder.
  • the insertion end 10 has one or more locking grooves 11 , which are closed on both sides along the longitudinal axis 7 .
  • the locking grooves 11 for example, have a length of 1 cm to 4 cm. Instead of or in addition to the locking grooves 11 may be provided an annular collar.
  • the working section 6 is a continuous, rod-shaped body.
  • a longitudinal axis of the working portion 6 coincides with the longitudinal axis 7 of the bit 1 , ie the working portion 6 is coaxial with the longitudinal axis 7.
  • the working portion 6 is preferably its largest dimension length 12 along the longitudinal axis 7; the dimensions transverse to the longitudinal axis 7 are significantly less than the length 12, for example, more than one third.
  • the working section 6 has a cylindrical core 13 and a plurality of webs 14.
  • the webs 14 extend over the entire length 12 of the working portion 6.
  • the webs 14 are distributed in the circumferential direction 15 around the core 13. Between adjacent in the circumferential direction 15 webs 14 is a respective groove 16.
  • the arrangement of the webs 14 results over the entire length 12 a star-shaped cross-sectional profile, such as the chisel 1 of Fig. 1 in the Fig. 2 to Fig. 5 is shown.
  • the surface of the working section 6 is composed of the surface 17 of the webs 14 .
  • the exemplary illustrated surface is formed by the four webs 14 and their surfaces 17 .
  • the webs 14 completely enclose the core 13 located on the longitudinal axis 7 .
  • the surface 17 of the web 14 has two mutually remote side surfaces 18, 19 and a back surface 20.
  • the side surfaces 18, 19 and the back surfaces extend along the longitudinal axis 7; that is, their largest dimension, the side surfaces 18, 19 and the back surface 20 along the longitudinal axis 7.
  • a first of the side surfaces 18 has mainly in the circumferential direction 15; a second of the side surfaces 19 is predominantly against the circumferential direction 15.
  • the back surface 20 has predominantly in the radial direction.
  • a solder to a point of the surface 17 can be decomposed into a vector typically in proportion in the radial direction and a vector component in the circumferential direction of 15 °. In this context, predominantly means that the vector component with the larger contribution determines the direction in which the surface 17 points at the point.
  • the surface 17 may have transition surfaces 21 , which connect the side surfaces 18, 19 of adjacent webs 14 together.
  • the transition surfaces 21 form the bottom of the grooves 16.
  • the transition surfaces 21 may have predominantly in the radial direction.
  • the webs 14 have a longitudinal axis 7 consistent or largely constant cross-section.
  • the cross section is predetermined by the side surfaces 18, 19 and the back surface 20 of the web 14 .
  • the entire surface of the working section 6 is correspondingly predetermined solely by the webs 14 .
  • the exemplary web 14 has a largely trapezoidal cross-section.
  • the back surface 20 forms one of the bases; the side surfaces 19 form the legs.
  • the Back surface 20 may be convex.
  • the exemplary side surfaces 19 may be flat.
  • An imaginary foot surface 22, which faces the back surface 20 forms the other of the bases.
  • the foot surfaces 22 connect the lowest points of the grooves 16.
  • the imaginary foot surfaces 22 of the webs 14 enclose the core 13.
  • the core 13 is preferably the largest convex prismatic body which can be disposed within the surface of the working section 6 .
  • the core 13 touches the grooves 16 at their longitudinal axis 7 next points, ie at their lowest points.
  • the core 13 is a circular cylinder which contacts all the grooves 16 .
  • a radius 23 of the core 13 is equal to the radial distance of the grooves 16 to the longitudinal axis 7.
  • the core diameter is twice the radius 23.
  • the core 13 has a small proportion of the mass of the working portion 6.
  • the core diameter is preferably less than half of the outer diameter 24 of the working portion 6, for example, less than 40% of the outer diameter 24.
  • the cross-sectional area of the core 13 has a proportion of less than one Third of the total cross-sectional area, eg less than a quarter.
  • the webs 14 contribute accordingly to at least two-thirds of the cross-sectional area and the mass of the working portion 6 at.
  • the web 14 has a waist with the smallest dimension 25 in the circumferential direction 15.
  • the waist is preferably close to the core 13.
  • the web 14 is wider starting from the waist with increasing distance 26 to the longitudinal axis 7 .
  • the dimension 27 in the circumferential direction 15 preferably increases continuously.
  • the dimension 27 in the circumferential direction 15 in this case refers to the distance, in a measure of length, between the opposite side surfaces 18, 19 in the respective radial distance 26 to the longitudinal axis 7.
  • the ratio of the shoulder to the waist is pronounced.
  • the shoulder is at least a third wider than the waist, preferably by half, for example by three quarters.
  • the increase in the circumferential dimension 15 is preferably carried out over a large part of the height 29 (radial dimension) of the web 14, at least over half the height 29.
  • the dimension 27 in the circumferential direction 15 may increase from the waist toward the
  • the side surfaces 18, 19 are inclined to each other and, viewed from the core 13, move away from each other.
  • An imaginary line of intersection of the inclined side surfaces 18, 19 lies on the side of the foot surface 22, preferably within the core 13.
  • the two Side surfaces 18, 19 of the four webs 14 include an angle 30 between 33 degrees and 54 degrees. For example, given a number N of lands 14 , the angle 30 may be selected between 75% of 180 / N degrees and 120% of 180 / N degrees.
  • the mutually inclined side surface 18, 19 have a dominant share of the surface 17 of the webs 14.
  • the two side surfaces 18, 19 together form at least half of the entire surface 17.
  • the side surfaces 18, 19 are over a substantial portion of the height 29 of the web 14 inclined to each other in the manner described above.
  • side surfaces 18, 19 for at least half are inclined at least three quarters of the height 29 of the web 14 to each other.
  • the distance 31 of the waist to the widest point may be greater than half the height 29 , for example, greater than three quarters of the height 29th
  • the web 14 is significantly wider at the back surface 20 than at the foot surface 22.
  • the smallest width is for example between 20% to 75% of the largest width.
  • the height 29 denotes the largest dimension in the radial direction of the webs 14.
  • the height 29 can be determined as the difference between the radial distance of the back surface 20 to the longitudinal axis 7 and the radial distance of the groove 16 to the longitudinal axis 7 .
  • the height 29 largely corresponds to the radial dimension of the side surfaces 18, 19.
  • the grooves 16 are wider from the core 13 to its opening.
  • a dimension 32 in the circumferential direction 15 of the grooves 16 increases with increasing radial distance 26 from the longitudinal axis 7 .
  • Opposing side surfaces 18, 19 of two adjacent webs 14 are inclined relative to each other and, viewed from the core 13, move away from each other.
  • the inclination of the opposite side surfaces 19 is preferably greater than 10 degrees, eg greater than 20 degrees, and for example less than 45 degrees. The slope promotes efficient rolling and forging processes.
  • the exemplary working section 6 has a four-fold rotational symmetry about the longitudinal axis 7.
  • the four webs 14 are formed identical and in each case by 90 degrees to their respective adjacent webs 14 offset in the circumferential direction 15 are arranged. Although a number of four webs 14 are preferred for reasons of stability and manufacturing, the working section 6 may have at least three webs and a maximum of eight webs.
  • the webs 14 are preferably formed identically, in particular in an odd number. In an even number, in particular at four, the webs 14 may be formed in pairs identical.
  • the webs 14 are preferably arranged distributed equidistantly in the circumferential direction 15 .
  • the working section 6 can taper in a region 33 adjoining the tip 2 .
  • the height 29 of the webs 14 decreases in the direction of impact 5 continuously, for example, to zero adjacent to the top 2.
  • the grooves 16 are thus always flatter.
  • the radius 23 of the core 13 may be the same over the entire length 12 of the working section 6 .
  • the core 13 is exposed near the top 2 .
  • a length of the conical region 33 can lie between one third and one half of the length 12 of the working section 6 .
  • the height 29 of the webs 14 is constant in the other remaining area 34 of the working portion 6 .
  • the webs 14 may be parallel to the longitudinal axis 7 .
  • the webs 14 may also be inclined by an angle of inclination 35 with respect to the longitudinal axis 7 .
  • the inclination 35 can be determined, for example, from the highest point 36 of the back surface 20, the side surfaces 18, 19 or a profile of the centroid 37 in the cross sections along the longitudinal axis 7 .
  • the inclination 35 of the web 14 with respect to the longitudinal axis 7 is preferably less than 10 degrees.
  • the web 14 runs over the entire length 12 of the working portion 6 by less than 90 degrees about the longitudinal axis 7.
  • the webs 14 exemplified are wavy.
  • the web 14 has multiple alternating left-handed sections 38 and right-handed sections 39 along the longitudinal axis 7.
  • Within a left-handed section 38 of the web 14 is inclined in a clockwise direction about the longitudinal axis 7 ; within a clockwise portion 39 of a web 14 is inclined in a counterclockwise direction.
  • the inclination 35 is determined, for example, based on the highest point 36 .
  • the inclination 35 of the web 14 with respect to the longitudinal axis 7 can change continuously.
  • the absolute maximum slope 35 of the web 14 with respect to the longitudinal axis 7 is preferably less than 10 degrees.
  • the webs 14 thus have left turning points, for example in level III-III, and right turning points, for example in the level IV-IV.
  • the left turning points are preferably on a straight line parallel to the longitudinal axis 7 ; the right turning points are preferably on a straight line parallel to the longitudinal axis 7 .
  • the deflection in the circumferential direction 15 of the left-handed sections 38 and right-hand sections 39 preferably compensates, ie the deflections are equal in magnitude.
  • the web 14 extends in the middle parallel to the longitudinal axis 7.
  • Averaged over the length 12 of the working portion 6 slope 35 is preferably less than 5 degrees, for example less than 2 degrees, preferably equal to zero.
  • the web 14 is shifted in the left turning points by less than a quarter of its width relative to itself in the right turning points in the circumferential direction 15 , for example by less than 15%, preferably by more than 7%.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Percussive Tools And Related Accessories (AREA)
EP16161839.2A 2016-03-23 2016-03-23 Burin Withdrawn EP3222390A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP16161839.2A EP3222390A1 (fr) 2016-03-23 2016-03-23 Burin
US16/084,058 US11213939B2 (en) 2016-03-23 2017-03-21 Chisel
CN201780018420.4A CN108883524B (zh) 2016-03-23 2017-03-21 凿刀
EP17712130.8A EP3433057B1 (fr) 2016-03-23 2017-03-21 Burin
PCT/EP2017/056617 WO2017162623A1 (fr) 2016-03-23 2017-03-21 Trépan

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16161839.2A EP3222390A1 (fr) 2016-03-23 2016-03-23 Burin

Publications (1)

Publication Number Publication Date
EP3222390A1 true EP3222390A1 (fr) 2017-09-27

Family

ID=55640568

Family Applications (2)

Application Number Title Priority Date Filing Date
EP16161839.2A Withdrawn EP3222390A1 (fr) 2016-03-23 2016-03-23 Burin
EP17712130.8A Active EP3433057B1 (fr) 2016-03-23 2017-03-21 Burin

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP17712130.8A Active EP3433057B1 (fr) 2016-03-23 2017-03-21 Burin

Country Status (4)

Country Link
US (1) US11213939B2 (fr)
EP (2) EP3222390A1 (fr)
CN (1) CN108883524B (fr)
WO (1) WO2017162623A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD923447S1 (en) 2019-05-06 2021-06-29 Milwaukee Electric Tool Corporation Chisel
USD921465S1 (en) 2019-05-06 2021-06-08 Milwaukee Electric Tool Corporation Mortar knife
USD922842S1 (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
USD922840S1 (en) 2019-05-06 2021-06-22 Milwaukee Electric Tool Corporation Chisel

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE463571C (de) 1928-08-01 Ed Doerrenberg Soehne Ohg Mehrkantiges Spitzeisen fuer Abbauhaemmer
GB512830A (en) * 1938-03-17 1939-09-27 John Joseph Rawlings Improvements in percussion drills
DE828385C (de) 1950-11-21 1952-01-17 Stahlhammerwerk Kruener G M B Spitzeisen fuer Abbauhaemmer
DE1846211U (de) 1961-06-07 1962-02-08 Guenther W Hammer Spitzeisen fuer abbauhaemmer.
DE19914522A1 (de) 1999-03-30 2000-10-05 Wacker Werke Kg Brechwerkzeug, insbesondere Meißel für maschinell angetriebene Schlagwerkzeuge
US6981496B2 (en) 2002-09-25 2006-01-03 Hilti Aktiengesellschaft Point chisel
EP1849955A1 (fr) * 2006-04-28 2007-10-31 HILTI Aktiengesellschaft Forêt de percussion avec une tige hélicoïdale à quatre rainures
CN201922428U (zh) 2010-11-27 2011-08-10 浙江永盛工具有限公司 凿尖
DE202013003876U1 (de) 2013-03-04 2013-06-25 BBG Baugeräte GmbH Brechwerkzeug
US20130205603A1 (en) * 2012-02-15 2013-08-15 Hilti Aktiengesellschaft Chisel
US9085074B2 (en) 2011-03-22 2015-07-21 Black & Decker Inc. Chisels

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US751403A (en) * 1904-02-02 Chisel
US1243504A (en) * 1917-02-02 1917-10-16 Frank Olwin Furber Broaching-tool.
US2028993A (en) * 1934-10-26 1936-01-28 Arrow Tools Inc Chisel
DE685529C (de) 1936-02-27 1939-12-20 Richard Emde Stosswerkzeug, insbesondere fuer Presslufthaemmer
FR2486853B1 (fr) * 1980-07-18 1985-12-20 Brunon Louis Outil de choc comportant une extremite de frappe et une extremite active de coupe, et son procede de fabrication
DE3853518T3 (de) 1987-12-14 2004-06-03 Mitsubishi Materials Corp. Spiralbohrer.
DE10057124A1 (de) * 1999-11-17 2001-05-23 Hawera Probst Gmbh Meißel
DE102010051740A1 (de) 2010-11-19 2012-05-24 Phenox Gmbh Thrombektomievorrichtung
KR20130140007A (ko) * 2010-11-26 2013-12-23 씨피엘 홀딩스 피티와이 엘티디 드릴 비트
US10646985B2 (en) * 2015-09-11 2020-05-12 The United States Of America, As Represented By The Secretary Of The Navy Method and apparatus for limiting equipment burden when penetrating a mixed or composite material structure including metal utilizing a hammer-drill

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE463571C (de) 1928-08-01 Ed Doerrenberg Soehne Ohg Mehrkantiges Spitzeisen fuer Abbauhaemmer
GB512830A (en) * 1938-03-17 1939-09-27 John Joseph Rawlings Improvements in percussion drills
DE828385C (de) 1950-11-21 1952-01-17 Stahlhammerwerk Kruener G M B Spitzeisen fuer Abbauhaemmer
DE1846211U (de) 1961-06-07 1962-02-08 Guenther W Hammer Spitzeisen fuer abbauhaemmer.
DE19914522A1 (de) 1999-03-30 2000-10-05 Wacker Werke Kg Brechwerkzeug, insbesondere Meißel für maschinell angetriebene Schlagwerkzeuge
US6981496B2 (en) 2002-09-25 2006-01-03 Hilti Aktiengesellschaft Point chisel
EP1849955A1 (fr) * 2006-04-28 2007-10-31 HILTI Aktiengesellschaft Forêt de percussion avec une tige hélicoïdale à quatre rainures
CN201922428U (zh) 2010-11-27 2011-08-10 浙江永盛工具有限公司 凿尖
US9085074B2 (en) 2011-03-22 2015-07-21 Black & Decker Inc. Chisels
US20130205603A1 (en) * 2012-02-15 2013-08-15 Hilti Aktiengesellschaft Chisel
US9221164B2 (en) 2012-02-15 2015-12-29 Hilti Aktiengesellschaft Chisel
DE202013003876U1 (de) 2013-03-04 2013-06-25 BBG Baugeräte GmbH Brechwerkzeug

Also Published As

Publication number Publication date
EP3433057A1 (fr) 2019-01-30
WO2017162623A1 (fr) 2017-09-28
CN108883524A (zh) 2018-11-23
US20200122309A1 (en) 2020-04-23
EP3433057B1 (fr) 2022-03-02
US11213939B2 (en) 2022-01-04
CN108883524B (zh) 2022-08-26

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