EP4392204A1 - Profilstruktur für ein bauteil einer werkzeugmaschine und werkzeugmaschine mit einer profilstruktur - Google Patents
Profilstruktur für ein bauteil einer werkzeugmaschine und werkzeugmaschine mit einer profilstrukturInfo
- Publication number
- EP4392204A1 EP4392204A1 EP22762047.3A EP22762047A EP4392204A1 EP 4392204 A1 EP4392204 A1 EP 4392204A1 EP 22762047 A EP22762047 A EP 22762047A EP 4392204 A1 EP4392204 A1 EP 4392204A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- profile structure
- component
- beads
- machine tool
- cutting arm
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/02—Frames; Beds; Carriages
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B27/00—Other grinding machines or devices
- B24B27/06—Grinders for cutting-off
- B24B27/08—Grinders for cutting-off being portable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
- B25F5/006—Vibration damping means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
Definitions
- the invention is located in the technical field of machine tools, in particular in the field of cutting or separating devices.
- gasoline-powered devices are known there, for example cut-off grinders, the grinding wheel of which is driven by an internal combustion engine, with the transmission of a movement from a motor of the cut-off grinder to the cutting wheel often being carried out with a belt drive.
- cutting or separating devices are often provided with a protective hood, on which, for example, an opening for attaching a dust extraction device can be provided.
- power cutters have a cutting arm that connects a first unit of the machine tool made of motor and handle with a second unit made of guard and cutting disc.
- This cutting arm can be subjected to such high loads during operation of the machine tool that, in the worst case, the cutting arm can break. Such a breakage of the cutting arm can lead to undesired injuries and hazards for the user of the machine tool.
- the mechanical stresses that can cause the cutting arm to break can be caused, for example, by imbalances in the rapidly rotating cutting blade or due to strong vibrations at high engine speeds or engine speeds.
- the cutting arm of a machine tool is also referred to as a boom in the literature.
- DE 10 2016 013 907 A1 describes a boom for a hand-held implement.
- the boom is fastened to a motor housing of the working device, so that a two-part configuration is disclosed in the sense that the motor housing and the boom represent separate components of the working device that are separate from one another.
- cantilevers designed in two parts are disadvantageous because an interface is required for their attachment, which often represents a predetermined breaking point on a machine tool due to the vibrations and mechanical loads, such as bending or torsion.
- forces are only transmitted at the screw points and contact surfaces between the individual parts of the boom.
- the basic structure of the boom must have particularly thick walls, which can lead to increased material consumption during production and thus higher material costs.
- the machine tool can have an undesirably increased weight due to such a two-part boom.
- the cantilevers In order to simplify the manufacture of the cantilevers, they are often used using the pot geometry. Cantilevers made using the pot geometry have indentations located either only on the front or only on the back. Due to this one-sided arrangement of the indentations, the cantilevers produced using the pot geometry often have reduced mechanical stability and robustness against tension and torsion.
- An example of a cantilever that can be made using the pot geometry is described in DE 10 325 663 A1.
- the object on which the present invention is based is to overcome the above-described deficiencies and disadvantages of the prior art and to provide a profile structure for a component of a machine tool, with which, for example, a cutting arm with improved stability and rigidity against various mechanical loads is provided can be.
- a machine tool is to be specified which has a cutting arm with improved stability.
- a further concern of the invention is to keep the overall weight of the machine tool as low as possible, ie to specify a particularly light machine tool.
- the invention in a first aspect, relates to a profile structure for a component of a machine tool, the profile structure having a front side and a rear side, the profile structure having at least two beads on one of the two sides and at least one bead on the other side.
- a bead preferably represents a channel-shaped indentation, which is used in the context of the present invention to stiffen the component of the machine tool against deformations or vibrations.
- the proposed profile structure is surprisingly stable in terms of bending around a horizontal or vertical axis or in terms of torsions.
- the increased mechanical stability is particularly evident when various of these load types interact, so that the component with the corresponding profile structure is subjected to particularly high and inhomogeneous loads.
- the component with the proposed profile structure with at least two beads has advantageously proven to be particularly robust and resistant to any damage or even breakage.
- the profile structure has a front and a rear, with the front and rear of the profile structure preferably being referred to as “sides of the profile structure”.
- the front side of the profile structure is preferably on the front side of the component, while the back side of the profile structure is present on the back side of the component.
- at least two beads are provided on the front side of the profile structure, while at least one bead is provided on the rear side of the profile structure.
- the beads can also be distributed the other way around on the front and back.
- the profile structure has an odd number of beads, for example three, five or seven beads, without being limited thereto.
- profile structures with five beads are always shown, with three beads on the front and two beads on the Rear of the profile structure are arranged. This arrangement of the beads has proven to be mechanically particularly stable and robust.
- the beads are arranged on both sides of the profile structure.
- the invention thus turns away from those cantilevers or machine tool components that are produced using the pot geometry, in which cavities or depressions are only arranged on one side of the cantilever or component.
- the beads are present on both sides of the profile structure, so that a mechanically particularly stable two-sided or double-sided arrangement of the beads is advantageously obtained.
- n beads are provided on the front side of the profile structure, while a number (n-1) beads is provided on the rear side of the profile structure.
- n-1) beads is provided on the rear side of the profile structure.
- the profile structure preferably being embodied symmetrically around a virtual central axis of the component.
- the beads of the profile structure are distributed or arranged symmetrically around the virtual central axis of the component.
- forces that occur can be particularly well distributed and mutually canceled out.
- the profile structure can have five beads, three of which are open in a “forward” spatial direction, while two beads are open in a “backward” spatial direction.
- the first, third and fifth beads can be arranged on the front side of the profile structure and the second and fourth beads on its rear side. Since the number of beads is preferably odd, the profile structure preferably has a "middle" bead, through which the virtual central axis of the profile structure or the cutting arm preferably runs.
- the third bead which is preferably located on the front of the profile structure, represents this middle bead.
- the first and third beads can preferably be designed to be open to the front, while the second, i.e. the middle bead, is open to the front is open at the back.
- the component of the machine tool that comprises the profile structure is a cutting arm or a boom for a cutting device or a saw
- axes can be motor, transmission or tool axes, for example.
- the corresponding axes are shown in FIG. 4, for example.
- the axes may pass substantially centrally through cylinders extending from the front of the tread structure toward the rear of the tread structure. In other words, this means that the cylinders run transversely through the component, this transverse direction running essentially perpendicular to a longitudinal direction of the component.
- the motor axis, gear axis and/or tool axis run essentially parallel or collinear to one another and they are essentially perpendicular to the virtual central axis of the component of the machine tool that includes the profile structure.
- the cylinders running through the engine axis, the transmission axis and/or the tool axis can preferably be referred to as engine cylinders, transmission cylinders and/or tool cylinders within the meaning of the invention.
- devices are provided for connecting the engine cylinders, transmission cylinders and/or tool cylinders to the engine, transmission and/or tool of the machine tool.
- These preferably have a substantially circular base area, which is preferably larger than a likewise substantially circular opening of the cylinder in the component of the machine tool that includes the profile structure.
- a bead area extends between the device for connecting the gear cylinder to the gear and between the device for connecting the tool cylinder to the tool.
- the bead area can preferably form in the area between the devices with the smallest distance.
- the bead area of the profile structure extends between the device for connecting the gear cylinder to the gear and the device for connecting the tool cylinder to the tool, specifically in the area of the smallest distance between these devices.
- the position of the bead area of the profile structure is shown in FIG. 7, for example.
- a bead area is arranged between a gear cylinder and a tool cylinder of the component of the machine tool.
- a bead area extends between a device for connecting a gear cylinder to a gear of the machine tool and a device for connecting a tool cylinder to a tool of the machine tool, with the bead area extending in particular in an area of the smallest Distance between a device for connecting a transmission cylinder with a transmission of the machine tool and a device for connecting a tool cylinder with a tool of the machine tool.
- the area of the smallest distance between the device for connecting the gear cylinder to the gear and the device for connecting the tool cylinder to the tool is referred to as the bead area within the meaning of the invention.
- the area mentioned is preferably also referred to as the length of the profile structure, so that in an alternative formulation it can be said that the beads run continuously through the profile structure.
- the beads of the profile structure are formed continuously within the component of the machine tool, ie are not interrupted in the longitudinal direction of the component. According to the invention, it is particularly preferred that the beads extend between the gear cylinder and the tool cylinder of the component of the machine tool, which is preferably designed as an extension arm or cutting arm.
- the profile structure has solid surfaces on its front side.
- the solid surfaces are present in particular on the front side of the component of the machine tool, with the component comprising the profile structure.
- the profile structure or the component can have two solid surfaces, which are preferably arranged symmetrically around a virtual central axis of the component. Examples of solid surfaces and their arrangement in a component, which is designed as a cutting arm, for example, are shown in FIG.
- the solid surfaces preferably ensure particularly low tensile stresses within the component that includes the profile structure, and thus particularly favorable mechanical properties with regard to stability and robustness of the component of the machine tool.
- the provision of the solid surfaces on the front side of the profile structure and/or the component of the machine tool counteracts severe deflection, which can disadvantageously lead to high tensile stresses and damage to the profile structure and/or the component of the machine tool.
- the at least two beads of the proposed profile structure run in the longitudinal direction of the component.
- the beads can run essentially parallel to the belt drive of the machine tool if the profile structure forms a cutting arm of a machine tool, for example.
- the invention in a second aspect, relates to a cutting arm for a machine tool, the cutting arm comprising a proposed profile structure with at least two beads.
- the cutting arm is preferably designed in one piece. It is preferred within the meaning of the invention that the proposed cutting arm represents a component of the machine tool within the meaning of the invention.
- the invention relates to a Cutting arm for a machine tool, wherein the cutting arm has a profile structure with at least two beads and the cutting arm is designed in one piece.
- the concept of one-piece preferably means that a motor housing of the machine tool and the component form a unit. Tests have shown that one-piece cutting arms with the same weight usually have a higher mechanical stability than two-piece cutting arms of the same weight. In addition, no interfaces are required, which are often complex to integrate and can further reduce the mechanical stability.
- the component can be made particularly light by providing the at least two beads, so that overall a machine tool with a low overall weight can be provided.
- the invention preferably relates to a profile structure for a component of a machine tool, the profile structure having at least two beads in a vertical sectional view.
- this preferably means that the shape and configuration of the profile structure with the at least two beads is particularly visible when a representation of a vertical section through the component is viewed.
- the proposed profile structure can be made visible through a vertical section through the component. It is preferred within the meaning of the invention that the proposed profile structure is visible in a vertical section at different points along the component.
- the proposed profile structure is preferably present at more than 50% of the total length of the component, with different profile structures or profiles also being able to occur at individual points or areas of the component. These points or areas of the component with deviating profile structures or profiles preferably make up less than 50%, ie a smaller part of the component of the machine tool.
- the proposed profile structure preferably represents a slender structure for absorbing loads, which in particular combines various approaches from the theory of strength.
- the proposed profile structure represents a non-obvious combination of a vertical I-beam profile, a horizontal I-beam profile, i.e. rotated by essentially 90 degrees compared to the upright I-beam profile, and a thin-walled tube where the vertical I-beam profile is designed to be particularly stable with respect to bending around the horizontal axis, the horizontal I-beam profile is designed to be particularly stable with regard to bending around the vertical axis and the thin-walled tube is designed to be particularly resistant and robust to torsion .
- the horizontal axis is preferably substantially perpendicular to a surface of the cutting arm, i.e. substantially perpendicular to a plane spanned by the cutting arm.
- the horizontal axis also runs essentially perpendicularly to a plane that is spanned by the preferably disc-shaped tool of the machine tool.
- the planes mentioned, which are spanned by the surface of the cutting arm and the preferably disk-shaped tool of the machine tool, are preferably designed to be essentially parallel.
- a bend around a horizontal axis of the cutting arm is shown in FIG. 6 as an example.
- the vertical axis When bending about the vertical axis, the vertical axis preferably runs through the plane that is spanned by the cutting arm or the preferably disc-shaped tool of the machine tool. In other words, the vertical axis lies in this plane, in particular in a vertical direction, ie in the sense of the invention preferably from top to bottom or from bottom to top.
- a bend around a vertical axis of the cutting arm is shown in FIG. 5 as an example.
- the axis of rotation preferably runs within the plane that is spanned by the cutting arm or the preferably disc-shaped tool of the machine tool, but in a horizontal direction, i.e., in the sense of the invention, preferably from front to back or from back to front, with the tool of the machine tool preferably marks the front area of the machine tool and the main body of the machine tool, which can have a motor or handles, for example, the rear area of the machine tool.
- a torsion about a virtual central axis of the cutting arm is shown in FIG. 4 as an example.
- the invention represents a combination of the theoretically optimal cross-sections of a cutting arm which, due to its delicate structure and the at least two beads, is particularly well suited to absorbing or withstanding the loads of the different load types or a possible combination of the different load types particularly well. In this way, the component with the proposed profile structure is protected particularly effectively against breakage and other mechanical damage.
- the profile structure has stiffening ribs. These stiffening ribs can be arranged in particular in the beads.
- the profile structure can be further reinforced by the provision of the stiffening ribs.
- thrusts between the different areas of the component can be transferred particularly well. It is a significant advantage of the invention that, due to these shear fields, the unfavorable forms of loading “bending” and “torsion” from the point of view of lightweight construction can be converted into the more favorable forms of loading “tension” or “compression” because they can be better endured. can be redirected. As a result, the component can be made particularly robust and stiff.
- the stiffening ribs enclose an angle alpha with the beads, the angle alpha being in a range of 30 to 60°.
- the stiffening ribs can preferably run offset at an angle of 30 to 60° to the beads.
- the wording that "the stiffening ribs form an angle alpha with the beads" means in the context of the invention in particular that the stiffening ribs form an angle with a virtual central axis of the cutting arm, with this angle being in a range of 30 to 60°.
- the stiffening ribs can run offset at a 45° angle to the beads.
- the stiffening ribs run, in particular, obliquely within the beads, it being possible for a degree for the inclination of the stiffening ribs to be specified by the angle alpha.
- the profile structure forms a sandwich structure.
- the sandwich effect which contributes to the particularly high mechanical stability and robustness of the proposed profile structure or the proposed component, can be achieved in particular by the preferably slender, load-bearing profile structure, which has at least two beads, and the preferably thin-walled stiffening ribs or stiffeners.
- the design of the proposed profile structure enables an optimized flow of forces within the component.
- an optimized or ideal flow of forces is characterized in that predominantly tensile or compressive loads occur in relation to the component of the machine tool.
- the profile structure and/or the stiffening ribs are closed over the entire length of the component of the machine tool.
- the profile structure and/or the stiffening ribs are not closed over the entire length of the component of the machine tool.
- they can be, for example, partially open and partially closed over the length of the component.
- the component can be perforated, include, but are not limited to, perforated and/or cut out structures or portions.
- the profile structure comprises a profile structure wall.
- the profile structure wall can preferably have different thicknesses in different areas. In the context of the invention, this preferably means that the profile structure wall can have different thicknesses in different areas.
- the term "thickness of the profile structure wall” is preferably to be understood in the context of the invention as the material or wall thickness of that material from which the component of the machine tool is made. This is preferably the thickness of the material in the area of the proposed profile structure, as shown in FIGS. 1 to 3.
- the profile structure and the stiffening ribs can preferably vary in thickness over the length and/or the width of the component of the machine tool. In the context of the invention, this preferably means that the profile structure wall can have different thicknesses in different areas of the component. In other words, the material of the component can have different material or wall thicknesses in different areas.
- the profile structure wall can preferably have a thickness in a range from 1 to 5 mm, preferably in a range from 2 to 3 mm.
- the profile structure and the stiffening ribs are designed to be planar, level and/or rectilinear. However, within the meaning of the invention, it can also be preferred that, deviating from this, they are not designed to be planar, level and/or rectilinear.
- the profile structure has areas with honeycomb and/or lattice structures. This can be achieved, for example, in that the ribs run obliquely and/or diagonally and in this way form honeycombs and/or grids or other structures. It is particularly preferred within the meaning of the invention that the ribs run obliquely and/or diagonally in the edge and/or outer areas of the profile structure or the cutting arm.
- the profile structure is made of more than one material.
- a basic structure of the profile structure can include a metal, while the stiffening ribs include a plastic.
- the basic structure of the profile structure can include a carbon fiber reinforced plastic (CFRP), while the stiffening ribs are formed from a different plastic or metal.
- CFRP carbon fiber reinforced plastic
- aluminum is preferably used due to its light weight.
- other metals or alloys are also possible.
- the proposed profile structure is optimized with regard to possible natural frequencies that occur in the component.
- simulation methods can be used, for example, which are used to further optimize the profile structure of the component and to achieve increased component rigidity.
- the invention relates to a machine tool with a component that includes a profile structure with at least two beads.
- the component is a cutting arm for a machine tool, the cutting arm being formed in one piece.
- the machine tool is preferably a cutting or separating device, with the machine tool preferably having a disc-shaped tool.
- the disk-shaped tool can in particular be a cutting disk or a cutting blade, the preferably disk-shaped tool being preferably arranged in a front area of the machine tool or the cutting arm of the machine tool.
- Figure 6 Side view of a preferred embodiment of the cutting arm, the cutting arm performing a flexion about a horizontal axis
- the profile structure 1 thus has a total of five beads 2 .
- the profile structure 1 has profile structure walls 4, which can have different thicknesses.
- the profile structure walls 4 can be made thicker in the transition areas between a bead and a profile surface of the profile structure 1 than in the area of the side walls of the beads 2.
- the outwardly facing surfaces of the component 20 of the machine tool 10 are preferably referred to as profile surfaces within the meaning of the invention.
- the exemplary embodiment of the invention shown in FIG. 1 essentially represents a basic structure 5 of the profile structure 1, the profile structure 1 shown in FIG. 1 having no stiffening ribs 3, for example.
- the beads 2 are open on the left-hand side and closed on the right-hand side of the figure.
- Figures 4-6 show side views of preferred embodiments of cutting arm 50.
- Figure 4 shows cutting arm 50 torsioning about a central axis D of cutting arm 50
- Figures 5 and 6 show flexures about a vertical (Fig. 5) and a horizontal (Fig. 6) axis of the cutting arm 50 are shown.
- the central axis, as well as the vertical and horizontal axes of the cutting arm 50 are represented in FIGS. 4 to 6 by dashed lines passing through the cutting arm 50 or lying within the cutting arm 50.
- the directions of bending or rotation of the cutting arm 50 for the respective types of loading are indicated in FIGS. 4 to 6 by the round arrows at the ends of the axles.
- FIG. 4 also shows the three axes A, B and C, which can run through different points of the cutting arm 50.
- the first axis A represents the motor axis of the machine tool 10.
- the second axis B represents the transmission axis of the machine tool 10 and is connected to one of the two pulleys of the belt drive of the machine tool 10.
- the third axis C represents the tool axis of the machine tool 10 and is connected to the other of the two pulleys of the belt drive of the machine tool 10 .
- the tool 11 of the machine tool 10 can rotate about the third or tool axis C of the proposed cutting arm 50 .
- FIG. 5 shows solid surfaces 6 which are arranged in particular on the front side V of the profile structure 1 or of the cutting arm 50 . These solid surfaces 6 are preferably distributed essentially symmetrically around the virtual central axis D of the cutting arm 50 .
- the solid surfaces 6 advantageously prevent bending of the cutting arm 50 and thus lead to a reduced tensile stress within the component 20 or the cutting arm 50. As a result, the component 20 or the cutting arm 50 of the machine tool 10 is particularly effectively protected from damage caused by excessive tensile stress.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
- Sawing (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP21192816.3A EP4140647A1 (de) | 2021-08-24 | 2021-08-24 | Profilstruktur für ein bauteil einer werkzeugmaschine und werkzeugmaschine mit einer profilstruktur |
| PCT/EP2022/072173 WO2023025577A1 (de) | 2021-08-24 | 2022-08-08 | Profilstruktur für ein bauteil einer werkzeugmaschine und werkzeugmaschine mit einer profilstruktur |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4392204A1 true EP4392204A1 (de) | 2024-07-03 |
Family
ID=77465898
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21192816.3A Withdrawn EP4140647A1 (de) | 2021-08-24 | 2021-08-24 | Profilstruktur für ein bauteil einer werkzeugmaschine und werkzeugmaschine mit einer profilstruktur |
| EP22762047.3A Pending EP4392204A1 (de) | 2021-08-24 | 2022-08-08 | Profilstruktur für ein bauteil einer werkzeugmaschine und werkzeugmaschine mit einer profilstruktur |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21192816.3A Withdrawn EP4140647A1 (de) | 2021-08-24 | 2021-08-24 | Profilstruktur für ein bauteil einer werkzeugmaschine und werkzeugmaschine mit einer profilstruktur |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20240375240A1 (de) |
| EP (2) | EP4140647A1 (de) |
| WO (1) | WO2023025577A1 (de) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10325663B4 (de) * | 2003-06-06 | 2023-03-16 | Andreas Stihl Ag & Co. Kg | Trennschleifer |
| WO2006101423A1 (en) * | 2005-03-23 | 2006-09-28 | Husqvarna Ab | Improvements relating to a cutting or sawing machine |
| US8347513B2 (en) * | 2010-12-21 | 2013-01-08 | Marshall Buster Lee | Hand-held saw with rigid frame |
| DE102016013907A1 (de) | 2016-11-22 | 2018-05-24 | Andreas Stihl Ag & Co. Kg | Handgeführtes Arbeitsgerät |
| EP3620262A1 (de) * | 2018-09-10 | 2020-03-11 | Hilti Aktiengesellschaft | Handgeführter trennschleifer |
| EP3670078B1 (de) * | 2018-12-21 | 2024-05-22 | Hilti Aktiengesellschaft | Handgeführter trennschleifer |
| EP3670077B1 (de) * | 2018-12-21 | 2024-05-15 | Hilti Aktiengesellschaft | Handgeführter trennschleifer |
| GB202102708D0 (en) * | 2021-02-25 | 2021-04-14 | Decom Eng Ltd | Cutting apparatus |
-
2021
- 2021-08-24 EP EP21192816.3A patent/EP4140647A1/de not_active Withdrawn
-
2022
- 2022-08-08 EP EP22762047.3A patent/EP4392204A1/de active Pending
- 2022-08-08 US US18/291,505 patent/US20240375240A1/en active Pending
- 2022-08-08 WO PCT/EP2022/072173 patent/WO2023025577A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| EP4140647A1 (de) | 2023-03-01 |
| US20240375240A1 (en) | 2024-11-14 |
| WO2023025577A1 (de) | 2023-03-02 |
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