EP3140081B1 - Manual machine tool - Google Patents
Manual machine tool Download PDFInfo
- Publication number
- EP3140081B1 EP3140081B1 EP15713756.3A EP15713756A EP3140081B1 EP 3140081 B1 EP3140081 B1 EP 3140081B1 EP 15713756 A EP15713756 A EP 15713756A EP 3140081 B1 EP3140081 B1 EP 3140081B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- handle
- working axis
- cavity
- machine
- along
- 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
Links
- 229920001971 elastomer Polymers 0.000 claims description 15
- 239000000806 elastomer Substances 0.000 claims description 15
- 238000009527 percussion Methods 0.000 description 6
- 238000013016 damping Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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
- B25D17/04—Handles; Handle mountings
- B25D17/043—Handles resiliently mounted relative to the hammer housing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D16/00—Portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
-
- 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
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D2222/00—Materials of the tool or the workpiece
- B25D2222/54—Plastics
- B25D2222/69—Foamed polymers, e.g. polyurethane foam
Definitions
- the present invention relates to a hand tool according to the preamble of claim 1.
- a hand tool is from DE 195 25 251 A1 known.
- DE 102010040094 A1 and EP 1 752 257 A2 refer to a handheld power tool.
- the hand-held power tool has a tool holder for holding a tool on a working axis and a percussion mechanism, which has a hammer that is periodically moved back and forth on the working axis.
- the hammer mechanism is fixed in a machine housing.
- a handle is attached to the machine body by means of a damper.
- the damper has a machine-side surface connected to the machine housing and a handle-side surface connected to the handle.
- a block of cellular elastomer is disposed adjacent the machine side surface and the handle side surface.
- An air-filled cavity is provided within the block between the machine-side surface and the handle-side surface.
- the cavities within the porous elastomer cause the damper to become stiffer as the user's contact pressure increases.
- the stiffness can easily be adjusted to a desired characteristic.
- the cavities in the block have proven to be sufficiently robust under continuous loading, in particular with regard to abrasion.
- a hammer drill 1 shows a hammer drill 1 as an example of a chiseling hand-held power tool.
- a motor 5, which drives an impact mechanism 6 and an output shaft 7 forms a primary drive of the hammer drill 1 .
- a battery pack 8 or a power line supplies the motor 5 with power.
- a user can guide the hammer drill 1 using a handle 9 and put the hammer drill 1 into operation using a system switch 10 .
- the rotary hammer 1 rotates the drill 4 continuously about a working axis 11 and can hit the drill 4 in the direction of impact 12 along the working axis 11 into a substrate.
- the percussion mechanism 6 is a pneumatic percussion mechanism 6.
- An exciter piston 13 and a beater 14 are movably guided in a guide tube 15 in the percussion mechanism 6 along the working axis 11 .
- the exciter piston 13 is coupled to the motor 5 via an eccentric 16 and is forced to perform a periodic, linear movement.
- a connecting rod 17 connects the eccentric 16 to the exciter piston 13.
- An air spring formed by a pneumatic chamber 18 between the exciter piston 13 and the hammer 14 couples a movement of the hammer 14 to the movement of the exciter piston 13 .
- the striker 14 can strike a rear end of the drill 4 directly or indirectly transmit part of its momentum to the drill 4 via an intermediate striker 19 which is essentially stationary.
- the percussion mechanism 6 and preferably the other drive components are arranged inside a machine housing 20 .
- a recoil of the pneumatic percussion mechanism 6 is transmitted to the handle 9 via the machine housing 20 .
- the handle 9 is suspended from the machine body 20 via a damper 21 to reduce peak recoil loading.
- the damper 21 is in a section in 2 shown.
- the damper 21 has a plunger 22 which is rigidly attached to the handle 9 .
- the stamp 22 is arranged in a cage 23 which is rigidly attached to the machine housing 20 .
- the punch 22 is movable in the cage 23 along the working axis 11 .
- the stamp 22 has an in Impact direction 12 pointing punch surface 24, which is opposite to the impact direction 12 pointing abutment surface 25 of the cage 23.
- the two surfaces 24, 25 are preferably flat or, if curved, have the same curvature.
- the stamping surface 24 is substantially uniform over its entire surface to the stop surface 25 at a distance 26.
- the damper 21 has a porous elastomeric body 27 which is arranged between the plunger 22 and the cage 23 .
- the porous elastomeric body 27 transmits a force from the handle 9 to the machine housing 20 in the direction of impact 12.
- the porous elastomeric body 27 has a buffer section 28 which bears against the stamping surface 24 and the opposing stop surface 25 .
- the dimensions of the buffer section 28 perpendicular to the working axis 11 are equal to the corresponding dimensions of the stamping surface 24, which is attached to the handle 9 here, for example.
- the outer surface of the porous elastomer body 27 pointing in the direction of impact 12 rests flush and completely against the stop surface 25 at least in the buffer section 28 .
- the outer surface of the buffer section 28 pointing counter to the direction of impact 12 rests flush and completely against the punch surface 24 .
- the porous elastomer body 27, in particular the buffer section 28, is compressed when the user presses the handle 9 in the impact direction 12 .
- the vibrations of the rotary hammer 1 act on the porous elastomer body 27 in a dynamic manner.
- the design of the buffer section 28 that rests continuously against the stamp surface 24 and the stop surface 25 effectively prevents the buffer section 28 from moving parallel to the stamp surface 24 and the stop surface 25 during dynamic load changes.
- the porous elastomer body 27 is preferably surrounded by an air gap 29 on its outer surfaces pointing perpendicularly to the working axis 11 surround.
- the air gap 29 is dimensioned sufficiently so that the porous elastomer body 27 does not touch the side of the cage 23 or another housing when compressed due to the contact pressure of the user.
- the porous elastomer body 27 preferably has a prismatic structure.
- the porous elastomer body 27 has a constant cross section ( 2 ).
- the porous elastomer body 27 can thus be cut out of a cuboid by means of a water jet saw.
- the porous elastomer body 27 shown has, for example, two air-filled cavities 30.
- the cavities 30 are arranged within the buffer section 28, ie between the stamping surface 24 and the stop surface 25 .
- the cavities 30 are within the buffer portion 28 in the sense that they do not open onto the punch surface 24 or the stop surface 25 .
- the cavity 30 is closed along the working axis 11 .
- the cavity 30 may open in a direction perpendicular to the working axis 11 .
- the cavities 30 illustrated by way of example have a cylindrical shape with an elliptical cross-section which extends through the entire porous elastomeric body 27 .
- the axes of the cavities 30 are, for example, parallel to the handle axis.
- the largest dimension 31 of the cavity 30 along the working axis 11, here the smaller semi-axis of the ellipse, is between 20% and 50% of the distance 26 of the punch surface 24 from the stop surface 25, i.e. the axial outer dimension of the buffer section 28.
- the axial dimensions of the porous Elastomer body 27 are to be determined without any external force acting on the damper 21 , in particular without the user exerting any pressure on the handle 9.
- the cavities 30 are increasingly compressed until the opposite inner surfaces 32, 33 of the cavity 30 are completely against one another come to the point.
- the rigidity of the buffer section 28 increases with increasing contact pressure until the cavity 30 is closed.
- the damper 21 which is soft with a low holding force, transmits only a few vibrations when the user holds the handle 9 loosely. In principle, as the contact pressure increases, more vibrations are transmitted, but the user's arm also causes natural damping. The latter effect is saturated, which is why a further increase in rigidity is disadvantageous for ergonomics from a medium holding force.
- the cavity 30 preferably has a constant cross-section along an axis.
- the axis is perpendicular or inclined to the working axis 11.
- the cavity 30 is closed annularly in cross-section.
- the cross-section has a dimension 31 along the working axis 11 and a dimension 34 perpendicular to the working axis 11.
- the dimension 34 perpendicular to the working axis 11 is preferably at least twice the dimension 31 along the working axis 11.
- the opposing inner surfaces 32, 33 can touch each other, particularly the points originally farthest along the working axis 11 , without cracking occurring in the porous elastomeric body 27 during dynamic loads.
- the cavity 35 has a teardrop-shaped cross-section.
- An inner surface 36 facing the cage 23 and inner surface 37 opposite this, facing the plunger 22 are essentially planar and converge to a point.
- the two inner surfaces 36, 37 are respectively inclined to each other at an angle of between 30 degrees and 90 degrees.
- the two flat inner surfaces 36, 37 are connected by a semi-cylindrical inner surface.
- An axis of the gob shape, i.e. from the tip to the half-cylinder, is perpendicular to the working axis 11.
- a width 38 of the gob i.e.
- its dimension 31 along the working axis 11 is preferably in the range between 20% and 50% of the distance 26 of the punch face 24 from the stop surface 25.
- the length 39 of the drop, ie along its axis through the tip, is greater than the width 38, preferably at least twice as large.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Percussive Tools And Related Accessories (AREA)
Description
Die vorliegende Erfindung betrifft eine Handwerkzeugmaschine gemäß dem Oberbegriff des Anspruchs 1. Eine solche Handwerkzeugmaschine ist aus der
Die erfindungsgemäße Handwerkzeugmaschine hat einen Werkzeughalter zum Haltern eines Werkzeugs auf einer Arbeitsachse und ein Schlagwerk, das einen auf der Arbeitsachse periodisch vor- und zurückbewegten Schläger aufweist. Das Schlagwerk ist in einem Maschinengehäuse befestigt. Ein Handgriff ist mittels eines Dämpfers an dem Maschinengehäuse befestigt. Der Dämpfer weist eine mit dem Maschinengehäuse verbundene maschinenseitige Fläche und eine mit dem Handgriff verbundene handgriffseitige Fläche auf. Anliegend an der maschinenseitigen Fläche und an der handgriffseitigen Fläche ist ein Block aus einem porigen Elastomer angeordnet. Ein luftgefüllter Hohlraum ist innerhalb des Blocks zwischen der maschinenseitigen Fläche und der handgriffseitigen Fläche vorgesehen.The hand-held power tool according to the invention has a tool holder for holding a tool on a working axis and a percussion mechanism, which has a hammer that is periodically moved back and forth on the working axis. The hammer mechanism is fixed in a machine housing. A handle is attached to the machine body by means of a damper. The damper has a machine-side surface connected to the machine housing and a handle-side surface connected to the handle. A block of cellular elastomer is disposed adjacent the machine side surface and the handle side surface. An air-filled cavity is provided within the block between the machine-side surface and the handle-side surface.
Die Hohlräume innerhalb des porigen Elastomers bewirken eine mit zunehmender Anpresskraft des Anwenders zunehmende Steifigkeit des Dämpfers. Die Steifigkeit kann in einfacher Weise an eine gewünschte Charakteristik angepasst werden. Die in dem Block liegenden Hohlräume erweisen sich als ausreichend robust unter Dauerbelastung, insbesondere gegenüber Abrieb.The cavities within the porous elastomer cause the damper to become stiffer as the user's contact pressure increases. The stiffness can easily be adjusted to a desired characteristic. The cavities in the block have proven to be sufficiently robust under continuous loading, in particular with regard to abrasion.
Die nachfolgende Beschreibung erläutert die Erfindung anhand von exemplarischen Ausführungsformen und Figuren. In den Figuren zeigen:
- Fig. 1
- einen Bohrhammer
- Fig. 2
- Schnitt durch eine Handgriffentkopplung des Bohrhammers in Ebene II
- Fig. 3
- Schnitt durch eine Handgriffentkopplung eines Bohrhammers in Ebene II
- 1
- a hammer drill
- 2
- Section through a handle decoupling of the rotary hammer in level II
- 3
- Section through a handle decoupling of a rotary hammer in level II
Gleiche oder funktionsgleiche Elemente werden durch gleiche Bezugszeichen in den Figuren indiziert, soweit nicht anders angegeben.Elements that are the same or have the same function are indicated by the same reference symbols in the figures, unless otherwise stated.
Das Schlagwerk 6 ist ein pneumatisches Schlagwerk 6. Ein Erregerkolben 13 und ein Schläger 14 sind in einem Führungsrohr 15 in dem Schlagwerk 6 längs der Arbeitsachse 11 beweglich geführt. Der Erregerkolben 13 ist über einen Exzenter 16 an den Motor 5 angekoppelt und zu einer periodischen, linearen Bewegung gezwungen. Ein Pleuel 17 verbindet den Exzenter 16 mit dem Erregerkolben 13. Eine Luftfeder gebildet durch eine pneumatische Kammer 18 zwischen dem Erregerkolben 13 und dem Schläger 14 koppelt eine Bewegung des Schlägers 14 an die Bewegung des Erregerkolbens 13 an. Der Schläger 14 kann direkt auf ein hinteres Ende des Bohrers 4 aufschlagen oder mittelbar über einen im Wesentlichen ruhenden Zwischenschläger 19 einen Teil seines Impuls auf den Bohrer 4 übertragen. Das Schlagwerk 6 und vorzugsweise die weiteren Antriebskomponenten sind innerhalb eines Maschinengehäuses 20 angeordnet.The
Ein Rückstoß des pneumatischen Schlagwerks 6 wird über das Maschinengehäuse 20 auf den Handgriff 9 übertragen. Der Handgriff 9 ist über einen Dämpfer 21 an dem Maschinengehäuse 20 aufgehängt, um die Spitzenbelastung des Rückstoßes zu verringern. Der Dämpfer 21 ist in einem Schnitt in
Der Dämpfer 21 hat einen porigen Elastomerkörper 27, der zwischen dem Stempel 22 und dem Käfig 23 angeordnet ist. Der porigen Elastomerkörper 27 übermittelt in Schlagrichtung 12 eine Kraft von dem Handgriff 9 auf das Maschinengehäuse 20. Der porigen Elastomerkörper 27 hat einen Pufferabschnitt 28, der an der Stempelfläche 24 und an der gegenüberliegenden Anschlagfläche 25 anliegt. Die Abmessungen des Pufferabschnitts 28 senkrecht zu der Arbeitsachse 11 sind gleich den entsprechenden Abmessungen Stempelfläche 24, welche hier beispielsweise an dem Handgriff 9 angebunden ist. Die in Schlagrichtung 12 weisende Außenfläche des porigen Elastomerkörpers 27 liegt wenigstens in dem Pufferabschnitt 28 bündig und vollständig an der Anschlagfläche 25 an. Gleichermaßen liegt die entgegen der Schlagrichtung 12 weisende Außenfläche des Pufferabschnitts 28 bündig und vollständig an der Stempelfläche 24 an. Der porigen Elastomerkörper 27, insbesondere der Pufferabschnitt 28, wird zusammengedrückt, wenn der Anwender den Handgriff 9 in Schlagrichtung 12 andrückt. Zusätzlich zu der Anpresskraft wirken die Vibrationen des Bohrhammers 1 auf den porigen Elastomerkörper 27 in dynamischer Weise ein. Die durchgehend an der Stempelfläche 24 und an der Anschlagfläche 25 anliegende Bauweise des Pufferabschnitts 28 verhindert effektiv, dass der Pufferabschnitt 28 sich bei den dynamischen Lastwechseln parallel zu der Stempelfläche 24 und der Anschlagfläche 25 bewegt. Insbesondere bei der staubigen Arbeitsumgebung des Bohrhammers 1 führt dies zu einem starken Verschleiß der porigen Elastomerkörpers 27, insbesondere eines für die Dämpfung bevorzugten kautschukfreien, offenporigen Elastomerkörpers 27. Der porigen Elastomerkörper 27 ist vorzugsweise an seinen senkrecht zu der Arbeitsachse 11 weisenden Außenflächen von einem Luftspalt 29 umgeben. Der Luftspalt 29 ist ausreichend dimensioniert, so dass der porigen Elastomerkörper 27 bei einer Kompression aufgrund der Anpresskraft des Anwenders den Käfig 23 oder ein anderes Gehäuse nicht seitlich berührt. Der porige Elastomerkörper 27 hat vorzugsweise einen prismatischen Aufbau. Längs einer Achse, hier beispielhaft längs der Griffachse, hat der porigen Elastomerkörper 27 einen gleichbleibenden Querschnitt (
Der dargestellte porigen Elastomerkörper 27 hat, beispielhaft zwei, luftgefüllte Hohlräume 30. Die Hohlräume 30 sind innerhalb des Pufferabschnitts 28, d.h. zwischen der Stempelfläche 24 und der Anschlagfläche 25 angeordnet. Die Hohlräume 30 liegen in dem Sinne innerhalb des Pufferabschnitts 28, als dass sie nicht zu der Stempelfläche 24 oder der Anschlagfläche 25 hin geöffnet sind. Der Hohlraum 30 ist längs der Arbeitsachse 11 geschlossen. Der Hohlraum 30 kann in einer Richtung senkrecht zu der Arbeitsachse 11 geöffnet sein. Die beispielhaft dargestellten Hohlräume 30 haben eine zylindrische Form mit einem elliptischen Querschnitt, der sich durch den gesamten porigen Elastomerkörper 27 erstreckt. Die Achsen der Hohlräume 30 sind hierbei exemplarisch parallel zu der Griffachse. Die größte Abmessung 31 des Hohlraums 30 längs der Arbeitsachse 11, hier die kleinere Halbachse der Ellipse, liegt zwischen 20 % und 50 % des Abstandes 26 der Stempelfläche 24 von der Anschlagfläche 25, also der axialen Außenabmessung des Pufferabschnitts 28. Die axialen Abmessungen des porigen Elastomerkörpers 27 sind ohne externe Krafteinwirkung auf den Dämpfer 21 zu bestimmen, insbesondere ohne Anpresspresskraft des Anwenders auf den Handgriff 9. Beim Andrücken des Handgriffs 9 in Schlagrichtung 12 werden die Hohlräume 30 zunehmend zusammengedrückt, bis die gegenüberliegenden Innenflächen 32, 33 des Hohlraums 30 vollständig aneinander zum Anliegen kommen. Die Steifigkeit des Pufferabschnitts 28 erhöht sich hierdurch mit zunehmender Anpresskraft bis der Hohlraum 30 geschlossen ist. Der bei geringer Haltekraft weiche Dämpfer 21 überträgt nur wenige Vibrationen, wenn der Anwender den Handgriff 9 lose hält. Bei zunehmender Anpresskraft werden im Prinzip mehr Vibrationen übertragen, allerdings bewirkt auch der Arm des Anwenders eine natürliche Dämpfung. Letzter Effekt erfährt eine Sättigung, weshalb ab einer mittleren Haltekraft eine weitere Zunahme der Steifigkeit nachteilig für die Ergonomie ist.The
Der Hohlraum 30 hat vorzugsweise einen längs einer Achse gleichbleibenden Querschnitt. Die Achse ist senkrecht oder geneigt gegenüber der Arbeitsachse 11. Der Hohlraum 30 ist in dem Querschnitt ringförmig geschlossen. Der Querschnitt hat eine Abmessung 31 längs der Arbeitsachse 11 und eine Abmessung 34 senkrecht zu der Arbeitsachse 11. Die Abmessung 34 senkrecht zur Arbeitsachse 11 ist vorzugsweise wenigstens doppelt so groß, wie die Abmessung 31 längs der Arbeitsachse 11. Die gegenüberliegenden Innenflächen 32, 33 können sich berühren, insbesondere die ursprünglich längs der Arbeitsachse 11 am weitest entfernten Punkte, ohne dass es zu einer Rissbildung während den dynamischen Belastungen in dem porigen Elastomerkörper 27 kommt.The
Claims (5)
- Hand-held machine tool (1) comprising:a tool holder (2) for holding a tool (4) on a working axis (11), a striking mechanism (6) having a striker (14) which is periodically moved back and forth on the working axis (11), a machine housing (20) in which the striking mechanism (6) is fastened, a handle (9) which is fastened to the machine housing (20) by means of a damper (21),the damper (21) having a machine-side surface (25) which is connected to the machine housing (20) and a handle-side surface (24) which is connected to the handle (9), and a block (27) made of a porous elastomer being arranged so as to rest against the machine-side surface (25) and the handle-side surface (24),characterized in that an air-filled cavity (30) is provided within the block (27) between the machine-side surface (25) and the handle-side surface (24), the cavity (30) being closed along the working axis (11).
- Hand-held machine tool (1) according to claim 1,
characterized in that a dimension (31, 38) of the cavity (30) along the working axis (11) is between 20% and 50% of the distance (26) of the machine-side surface (25) to the handle-side surface (24) along the working axis (11). - Hand-held machine tool (1) according to either claim 1 or claim 2,
characterized in that the dimension (31) of the cavity (30) along the working axis (11) is less than the dimension (34) of the cavity (30) in directions perpendicular to the working axis (11). - Hand-held machine tool (1) according to any of the preceding claims, characterized in that the cavity (30) has a drop-shaped cross section.
- Hand-held machine tool (1) according to claim 4,
characterized in that the cavity is open along an axis perpendicular to the working axis (11).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP14167638.7A EP2942158A1 (en) | 2014-05-09 | 2014-05-09 | Manual machine tool |
PCT/EP2015/057150 WO2015169515A1 (en) | 2014-05-09 | 2015-04-01 | Hand-held power tool |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3140081A1 EP3140081A1 (en) | 2017-03-15 |
EP3140081B1 true EP3140081B1 (en) | 2022-07-27 |
Family
ID=50678076
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14167638.7A Withdrawn EP2942158A1 (en) | 2014-05-09 | 2014-05-09 | Manual machine tool |
EP15713756.3A Active EP3140081B1 (en) | 2014-05-09 | 2015-04-01 | Manual machine tool |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14167638.7A Withdrawn EP2942158A1 (en) | 2014-05-09 | 2014-05-09 | Manual machine tool |
Country Status (4)
Country | Link |
---|---|
US (1) | US10654158B2 (en) |
EP (2) | EP2942158A1 (en) |
CN (1) | CN106457542A (en) |
WO (1) | WO2015169515A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6620434B2 (en) * | 2015-06-12 | 2019-12-18 | マックス株式会社 | Impact tool |
DE102017002094A1 (en) * | 2017-03-04 | 2018-09-06 | Andreas Stihl Ag & Co. Kg | Electric implement with vibration decoupling |
JP2022128006A (en) * | 2021-02-22 | 2022-09-01 | 株式会社マキタ | impact tool |
US11919138B2 (en) * | 2021-10-19 | 2024-03-05 | Makita Corporation | Impact tool |
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-
2014
- 2014-05-09 EP EP14167638.7A patent/EP2942158A1/en not_active Withdrawn
-
2015
- 2015-04-01 EP EP15713756.3A patent/EP3140081B1/en active Active
- 2015-04-01 WO PCT/EP2015/057150 patent/WO2015169515A1/en active Application Filing
- 2015-04-01 CN CN201580022831.1A patent/CN106457542A/en active Pending
- 2015-04-01 US US15/309,775 patent/US10654158B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
US10654158B2 (en) | 2020-05-19 |
EP3140081A1 (en) | 2017-03-15 |
CN106457542A (en) | 2017-02-22 |
WO2015169515A1 (en) | 2015-11-12 |
US20170144287A1 (en) | 2017-05-25 |
EP2942158A1 (en) | 2015-11-11 |
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