EP1852223A2 - Tool holder for percussion tool - Google Patents
Tool holder for percussion tool Download PDFInfo
- Publication number
- EP1852223A2 EP1852223A2 EP07106821A EP07106821A EP1852223A2 EP 1852223 A2 EP1852223 A2 EP 1852223A2 EP 07106821 A EP07106821 A EP 07106821A EP 07106821 A EP07106821 A EP 07106821A EP 1852223 A2 EP1852223 A2 EP 1852223A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- tool
- free space
- seal
- work spindle
- impact tool
- 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.)
- Granted
Links
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
- B25D17/08—Means for retaining and guiding the tool bit, e.g. chucks allowing axial oscillation of the tool bit
- B25D17/084—Rotating chucks or sockets
- B25D17/088—Rotating chucks or sockets with radial movable locking elements co-operating with bit shafts specially adapted therefor
-
- 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
- B25D17/20—Devices for cleaning or cooling tool or work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D2217/00—Details of, or accessories for, portable power-driven percussive tools
- B25D2217/0057—Details related to cleaning or cooling the tool or workpiece
- B25D2217/0061—Details related to cleaning or cooling the tool or workpiece related to cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D2217/00—Details of, or accessories for, portable power-driven percussive tools
- B25D2217/0057—Details related to cleaning or cooling the tool or workpiece
- B25D2217/0065—Use of dust covers
- B25D2217/0069—Protecting chucks against entering of chip dust
-
- 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
- B25D2250/365—Use of seals
Definitions
- the invention relates to a hand tool with a Schlagwerkmaschinesch, in particular a chisel hammer, combination hammer, etc. with an internal cooling fan for generating a cooling air flow for the engine cooling.
- the limitation of the abrasive dust entry into dust-sensitive assemblies such as the striker or the inner surface of the guide sleeve of the impact tool holder is a significant contribution to increasing the maintenance-free service life.
- the cooling air flow of the engine cooling system guided in a cooling air duct within an outer housing and radially outside a work spindle of the power tool, is guided up to an impact tool receptacle integrated into the tool spindle and into a free space radially adjacent the work spindle for cooling the outer surface of the guide sleeve used, which is strongly heated by the sliding friction of this limited axially movable impact tool.
- the object of the invention is to realize a protected against dust entry impact tool holder for a striking hand tool high impact performance.
- an at least partially hammering hand tool machine designed for a limited axially movable guided impact tool impact tool receptacle, which is arranged on a work spindle with a coaxial inner striker, wherein at least one within an outer housing and radially outside the work spindle extending cooling air duct in a radially outward to the Working spindle adjacent space of the impact tool holder opens, which is closed via a arranged between the outer housing and the impact tool holder seal to the outside flow-tight and connected via at least one air opening of the work spindle with its interior through-flow.
- the air opening of the work spindle is arranged on the tool side in front of a tool-side reversal point of the striker, as a result of which it is never closed in a flow-tight manner by the axially reciprocating striker.
- the free space adjoins at least one, designed to receive a radially displaceable locking body, locking opening of the work spindle, whereby the free space is connected through the formed between the locking hole and the locking body air opening with the interior of the workspindle.
- the seal is designed as a ring diaphragm seal, further advantageously made of acrylonitrile-butadiene rubber (NBR), which extends elastically radially biased completely circumferentially over an annular space adjacent to the free space, between the outer housing (usually the tool-side flange) and the impact tool holder (usually the machine side, axially displaceable actuating sleeve) forms, whereby the free space is closed to the outside flow-tight.
- NBR acrylonitrile-butadiene rubber
- Such a ring diaphragm seal is particularly suitable for non-rotating driven impact tool receiving a chisel hammer.
- the seal is designed as a ring labyrinth seal, further advantageously made of polyacetal (POM), which extends without contact completely encircling the annular space adjacent to the free space, whereby the free space is closed to the outside flow-tight, since only a negligible leakage through the labyrinth possible is.
- POM polyacetal
- Such a ring labyrinth seal is particularly suitable for a rotationally driven impact tool holder of a combination hammer.
- FIG. 2 an only partially shown, along the axis
- the work spindle 4 is tapered on the tool side for guiding the impact tool 2 in the manner of a guide sleeve.
- a within a outer housing 6 and radially outside the work spindle 4 extending cooling air channel 7 opens into a radially outwardly adjacent to the work spindle 4 space 8 of the impact tool receptacle 3, which via a arranged between the outer housing 6 and the impact tool holder 3 seal 9, 9 'to the outside closed in a flow-tight manner and over several, on the tool side, in front of a tool side Turning point of the anvil 5 arranged, air openings 10, 10 'of the work spindle 4 is connected to the interior of which flows through.
- the seal 9 is formed as a thin annular diaphragm seal of acrylonitrile-butadiene rubber in a non-rotating driven impact tool holder 3, which extends elastically radially biased completely encircling an adjacent to the free space 8 annular gap 11, which between the tool-side cylindrical connecting flange 12 of the outer housing 6 and the machine side, axially displaceable actuating sleeve 13 of the impact tool holder 3 is formed.
- the seal 9 extends tool-sealingly to the receiving housing 14th
- the seal 9 ' is designed as a ring labyrinth seal made of polyacetal in a rotationally driven impact tool holder 3, which is contactless at a distance of 0.1 mm (not visible in the illustrated scale) completely circumferential over the free space 8 adjacent annular gap 11 extends, which is formed between the tool-side cylindrical connecting flange 12 of the outer housing 6 and the machine side, axially displaceable actuating sleeve 13 of the impact tool holder 3.
Abstract
Description
Die Erfindung bezeichnet eine Handwerkzeugmaschine mit einer Schlagwerkzeugaufnahme, insbesondere einen Meisselhammer, Kombihammer usw. mit einem internen Kühlgebläse zur Erzeugung eines Kühlluftstromes für die Motorkühlung.The invention relates to a hand tool with a Schlagwerkzeugaufnahme, in particular a chisel hammer, combination hammer, etc. with an internal cooling fan for generating a cooling air flow for the engine cooling.
Gerade bei zum schlagenden Abbau von Gestein zweckentsprechend benutzten Elektrohandwerkzeugmaschinen stellt die Begrenzung des abrasiven Staubeintrags in staubempfindliche Baugruppen wie den Döppervorraum oder die Innenfläche der Führungshülse der Schlagwerkzeugaufnahme einen wesentlichen Beitrag zur Erhöhung der wartungsfreien Nutzungsdauer dar.Especially with electric hand-held power tools used suitably for the striking removal of rock, the limitation of the abrasive dust entry into dust-sensitive assemblies such as the striker or the inner surface of the guide sleeve of the impact tool holder is a significant contribution to increasing the maintenance-free service life.
Nach der
Nach der
Zudem wird nach der
Die Aufgabe der Erfindung besteht in der Realisierung einer vor Staubeintrag geschützten Schlagwerkzeugaufnahme für eine schlagende Handwerkzeugmaschine hoher Schlagleistung.The object of the invention is to realize a protected against dust entry impact tool holder for a striking hand tool high impact performance.
Die Aufgabe wird im Wesentlichen durch die Merkmale des Anspruchs 1 gelöst. Vorteilhafte Weiterbildungen ergeben sich aus den Unteransprüchen.The object is essentially achieved by the features of
So weist eine zumindest teilweise schlagende Handwerkzeugmaschine eine für ein axial begrenzt beweglich geführtes Schlagwerkzeug ausgebildete Schlagwerkzeugaufnahme auf, die an einer Arbeitsspindel mit einem koaxial innenliegenden Döpper angeordnet ist, wobei zumindest ein innerhalb eines Aussengehäuses sowie radial ausserhalb der Arbeitsspindel verlaufender Kühlluftkanal in einen radial aussen an die Arbeitsspindel angrenzenden Freiraum der Schlagwerkzeugaufnahme einmündet, der über eine zwischen dem Aussengehäuse und der Schlagwerkzeugaufnahme angeordnete Dichtung nach aussen strömungsdicht geschlossen und der über zumindest eine Luftöffnung der Arbeitsspindel mit deren Inneren durchströmbar verbunden ist. Dies gilt ohne Einschränkung analog für eine Führungshülse einer lösbar an der Arbeitsspindel montierbaren separaten Schlagwerkzeugaufnahme.Thus, an at least partially hammering hand tool machine designed for a limited axially movable guided impact tool impact tool receptacle, which is arranged on a work spindle with a coaxial inner striker, wherein at least one within an outer housing and radially outside the work spindle extending cooling air duct in a radially outward to the Working spindle adjacent space of the impact tool holder opens, which is closed via a arranged between the outer housing and the impact tool holder seal to the outside flow-tight and connected via at least one air opening of the work spindle with its interior through-flow. This applies without limitation analogous to a guide sleeve of a detachably mounted on the work spindle separate impact tool holder.
Durch die nach aussen strömungsdichte und mit dem Inneren der Arbeitsspindel, welche maschinenseitig ein kurzer kompakter Döpper abdichtet, durchströmbar verbundenen Freiraum der Schlagwerkzeugaufnahme kann die einströmende Kühlluft im wesentlichen nur werkzeugseitig entweichen, wobei diese allfällig vorhandenen Staubeintrag mitnimmt bzw. einem neuen Staubeintrag entgegenwirkt. Bei eingesetztem zugeordneten Schlagwerkzeug baut sich im Freiraum genau der zeitlich gemittelte Überdruck auf, der die zugeführte Kühlluftmenge durch den Radialspalt zwischen dem als Führungshülse der integrierten Schlagwerkzeugaufnahme ausgebildetem werkzeugseitigen Ende der Arbeitsspindel und dem Werkzeug abzuführen gestattet.Due to the outward flow-tight and with the interior of the work spindle, which seals a short, compact Doppper machine-side, free space of impact tool holder, the inflowing cooling air essentially only escape tool on the side, which entrains any existing dust entry or counteracts a new dust entry. When inserted associated impact tool builds in the free space exactly the time-averaged overpressure, which allows the supplied amount of cooling air through the radial gap between the trained as a guide sleeve integrated impact tool holder tool-side end of the work spindle and the tool to dissipate.
Vorteilhaft ist die Luftöffnung der Arbeitsspindel werkzeugseitig vor einem werkzeugseitigen Umkehrpunkt des Döppers angeordnet, wodurch diese niemals vom axial hin- und herbewegten Döpper strömungsdicht geschlossen wird.Advantageously, the air opening of the work spindle is arranged on the tool side in front of a tool-side reversal point of the striker, as a result of which it is never closed in a flow-tight manner by the axially reciprocating striker.
Vorteilhaft grenzt der Freiraum an zumindest eine, zur Aufnahme eines radial versetzbaren Verriegelungskörpers ausgebildete, Verriegelungsöffnung der Arbeitsspindel, wodurch der Freiraum durch die zwischen der Verriegelungsöffnung und dem Verriegelungskörper ausgebildete Luftöffnung mit dem Inneren der Arbeitsspindel durchströmbar verbunden ist.Advantageously, the free space adjoins at least one, designed to receive a radially displaceable locking body, locking opening of the work spindle, whereby the free space is connected through the formed between the locking hole and the locking body air opening with the interior of the workspindle.
Vorteilhaft ist die Dichtung als eine Ringmembrandichtung ausgebildet, weiter vorteilhaft aus Acrylnitril-Butadien-Kautschuk (NBR), die sich elastisch radial vorgespannt vollständig umlaufend über einen an den Freiraum angrenzenden Ringspalt erstreckt, der zwischen dem Aussengehäuse (zumeist dem werkzeugseitigen Anschlussflansch) und der Schlagwerkzeugaufnahme (zumeist der maschinenseitigen, axial versetzbaren Betätigungshülse) ausbildet, wodurch der Freiraum nach aussen strömungsdicht geschlossen ist. Eine derartige Ringmembrandichtung ist insbesondere für eine nichtdrehend angetriebene Schlagwerkzeugaufnahme eines Meisselhammers geeignet.Advantageously, the seal is designed as a ring diaphragm seal, further advantageously made of acrylonitrile-butadiene rubber (NBR), which extends elastically radially biased completely circumferentially over an annular space adjacent to the free space, between the outer housing (usually the tool-side flange) and the impact tool holder (usually the machine side, axially displaceable actuating sleeve) forms, whereby the free space is closed to the outside flow-tight. Such a ring diaphragm seal is particularly suitable for non-rotating driven impact tool receiving a chisel hammer.
Alternativ vorteilhaft ist die Dichtung als eine Ringlabyrinthdichtung ausgebildet, weiter vorteilhaft aus Polyazetal (POM), die sich berührungsfrei vollständig umlaufend über den an den Freiraum angrenzenden Ringspalt erstreckt, wodurch der Freiraum nach aussen strömungsdicht geschlossen ist, da nur eine vernachlässigbare Leckströmung durch das Labyrinth möglich ist. Eine derartige Ringlabyrinthdichtung ist insbesondere für eine drehend angetriebene Schlagwerkzeugaufnahme eines Kombihammers geeignet.Alternatively advantageously, the seal is designed as a ring labyrinth seal, further advantageously made of polyacetal (POM), which extends without contact completely encircling the annular space adjacent to the free space, whereby the free space is closed to the outside flow-tight, since only a negligible leakage through the labyrinth possible is. Such a ring labyrinth seal is particularly suitable for a rotationally driven impact tool holder of a combination hammer.
Die Erfindung wird bezüglich eines vorteilhaften Ausführungsbeispiels näher erläutert mit:
- Fig. 1 als Handwerkzeugmaschine mit Schlagwerkzeugaufnahme
- Fig. 2 als Variante
- Fig. 1 as a hand tool with impact tool holder
- Fig. 2 as a variant
Nach Fig. 1 und Fig. 2 weist eine nur teilweise dargestellte, längs der Achse A schlagende Handwerkzeugmaschine 1 eine für ein nur teilweise dargestelltes axial begrenzt beweglich geführtes Schlagwerkzeug 2 ausgebildete, integrierte Schlagwerkzeugaufnahme 3 auf, die an einer Arbeitsspindel 4 mit einem koaxial innenliegenden, kurzen kompakten Döpper 5 angeordnet ist. Die Arbeitsspindel 4 ist werkzeugseitig verjüngt zur Führung des Schlagwerkzeugs 2 in der Art einer Führungshülse ausgebildet. Ein innerhalb eines Aussengehäuses 6 sowie radial ausserhalb der Arbeitsspindel 4 verlaufender Kühlluftkanal 7 mündet in einen radial aussen an die Arbeitsspindel 4 angrenzenden Freiraum 8 der Schlagwerkzeugaufnahme 3 ein, der über eine zwischen dem Aussengehäuse 6 und der Schlagwerkzeugaufnahme 3 angeordnete Dichtung 9, 9' nach aussen strömungsdicht geschlossen und der über mehrere, werkzeugseitig vor einem werkzeugseitigen Umkehrpunkt des Döppers 5 angeordnete, Luftöffnungen 10, 10' der Arbeitsspindel 4 mit deren Inneren durchströmbar verbunden ist.1 and FIG. 2, an only partially shown, along the axis A
Nach Fig. 1 ist bei einer nichtdrehend angetriebenen Schlagwerkzeugaufnahme 3 die Dichtung 9 als eine dünne Ringmembrandichtung aus Acrylnitril-Butadien-Kautschuk ausgebildet, die sich elastisch radial vorgespannt vollständig umlaufend über einen an den Freiraum 8 angrenzenden Ringspalt 11 erstreckt, der zwischen dem werkzeugseitigen zylinderförmigen Anschlussflansch 12 des Aussengehäuses 6 und der maschinenseitigen, axial versetzbaren Betätigungshülse 13 der Schlagwerkzeugaufnahme 3 ausbildet ist. Zudem erstreckt sich die Dichtung 9 werkzeugseitig dichtend zum Aufnahmegehäuse 14.According to Fig. 1, the
Nach Fig. 2 ist im Unterschied zu Fig. 1 bei einer drehend angetriebenen Schlagwerkzeugaufnahme 3 die Dichtung 9' als eine Ringlabyrinthdichtung aus Polyazetal ausgebildet, die sich berührungsfrei im Abstand von 0.1 mm (im dargestellten Massstab nicht erkennbar) vollständig umlaufend über den an den Freiraum 8 angrenzenden Ringspalt 11 erstreckt, der zwischen dem werkzeugseitigen zylinderförmigen Anschlussflansch 12 des Aussengehäuses 6 und der maschinenseitigen, axial versetzbaren Betätigungshülse 13 der Schlagwerkzeugaufnahme 3 ausbildet ist. Zudem erstreckt sich die Dichtung 9' werkzeugseitig dichtend zum Aufnahmegehäuse 14. Der Freiraum 8 grenzt an zwei, zur Aufnahme je eines radial versetzbaren Verriegelungskörpers 15 ausgebildete, Verriegelungsöffnungen 16 der Arbeitsspindel 4, wobei der Freiraum 8 ausschlisslich durch die jeweils zwischen den Verriegelungsöffnungen 16 und den Verriegelungskörpern 15 ausgebildeten Luftöffnungen 10' mit dem Inneren der Arbeitsspindel 4 durchströmbar verbunden ist.According to FIG. 2, in contrast to FIG. 1, the seal 9 'is designed as a ring labyrinth seal made of polyacetal in a rotationally driven impact tool holder 3, which is contactless at a distance of 0.1 mm (not visible in the illustrated scale) completely circumferential over the free space 8 adjacent annular gap 11 extends, which is formed between the tool-side cylindrical connecting
Claims (5)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006000209A DE102006000209A1 (en) | 2006-05-05 | 2006-05-05 | Hand tool machine with impact tool holder |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1852223A2 true EP1852223A2 (en) | 2007-11-07 |
EP1852223A3 EP1852223A3 (en) | 2013-01-02 |
EP1852223B1 EP1852223B1 (en) | 2014-04-23 |
Family
ID=38328913
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07106821.7A Expired - Fee Related EP1852223B1 (en) | 2006-05-05 | 2007-04-24 | Tool holder for percussion tool |
Country Status (5)
Country | Link |
---|---|
US (1) | US8176997B2 (en) |
EP (1) | EP1852223B1 (en) |
JP (1) | JP5032882B2 (en) |
CN (1) | CN101066588A (en) |
DE (1) | DE102006000209A1 (en) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007000216B4 (en) * | 2007-04-11 | 2022-10-27 | Hilti Aktiengesellschaft | Electric reciprocating saw |
DE102009028890B4 (en) * | 2009-08-26 | 2014-11-20 | Hilti Aktiengesellschaft | tool holder |
CA2796622A1 (en) * | 2010-04-21 | 2011-10-27 | Michael Taylor | Grout removal tool |
DE102010028302A1 (en) * | 2010-04-28 | 2011-12-01 | Hilti Aktiengesellschaft | drilling |
US20130299207A1 (en) * | 2012-05-10 | 2013-11-14 | Black & Decker, Inc. | Power tool cooling |
JP5984658B2 (en) * | 2012-12-25 | 2016-09-06 | 株式会社マキタ | Impact tool |
EP3189940B1 (en) | 2012-12-25 | 2018-01-31 | Makita Corporation | Impact tool |
EP2871030A1 (en) | 2013-11-06 | 2015-05-13 | HILTI Aktiengesellschaft | Manual tool machine |
EP2918376A1 (en) * | 2014-03-12 | 2015-09-16 | HILTI Aktiengesellschaft | Chiselling hand-held machine tool |
JP6339421B2 (en) * | 2014-06-06 | 2018-06-06 | 古河ロックドリル株式会社 | Chisel for excavator and excavator provided with the same |
JP6863704B2 (en) | 2016-10-07 | 2021-04-21 | 株式会社マキタ | Strike tool |
US10875168B2 (en) | 2016-10-07 | 2020-12-29 | Makita Corporation | Power tool |
WO2019079560A1 (en) | 2017-10-20 | 2019-04-25 | Milwaukee Electric Tool Corporation | Percussion tool |
WO2019147919A1 (en) | 2018-01-26 | 2019-08-01 | Milwaukee Electric Tool Corporation | Percussion tool |
US11117249B2 (en) * | 2018-05-23 | 2021-09-14 | Illinois Tool Works Inc. | Powered fastener driving tool |
JP7246202B2 (en) | 2019-02-19 | 2023-03-27 | 株式会社マキタ | Power tool with vibration mechanism |
JP7229807B2 (en) | 2019-02-21 | 2023-02-28 | 株式会社マキタ | Electric tool |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2091304A5 (en) * | 1970-05-15 | 1972-01-14 | Hilti Ag | |
US5307881A (en) * | 1992-10-02 | 1994-05-03 | Ingersoll-Rand Company | Flushing system for a percussive, fluid-activated apparatus |
EP1252976A1 (en) * | 2001-04-20 | 2002-10-30 | Black & Decker Inc. | Percussion hammer with vibration damping mechanism |
US20040226729A1 (en) * | 2003-05-12 | 2004-11-18 | Nitto Kohki Co., Ltd. | Impact tool |
WO2006004547A1 (en) * | 2004-07-05 | 2006-01-12 | Atlas Copco Construction Tools Ab | Impact tool with a movably supported impact mechanism |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2214800A (en) * | 1939-06-29 | 1940-09-17 | Ingersoll Rand Co | Percussive tool |
US3718193A (en) * | 1971-02-18 | 1973-02-27 | Bosch Gmbh Robert | Cooling system for portable impulse transmitting machines |
DE2844086A1 (en) * | 1978-10-10 | 1980-04-30 | Bosch Gmbh Robert | HAND MACHINE, IN PARTICULAR HAMMER |
JP2000153473A (en) * | 1998-11-19 | 2000-06-06 | Makita Corp | Hammering tool |
EP1106307A1 (en) * | 1999-12-10 | 2001-06-13 | Vittorio Bertolla | Mechanical hammer |
ATE361182T1 (en) * | 2001-10-15 | 2007-05-15 | Hilti Ag | COOLING AIR LINE FOR AN ELECTRICAL HAND TOOL WITH ELECTROPNEUMATIC IMPACT MACHINE |
DE102004058696A1 (en) * | 2004-12-06 | 2006-06-08 | Hilti Ag | Electric power tool |
DE102005000018A1 (en) * | 2005-03-07 | 2006-09-14 | Hilti Ag | header |
-
2006
- 2006-05-05 DE DE102006000209A patent/DE102006000209A1/en not_active Withdrawn
-
2007
- 2007-04-24 EP EP07106821.7A patent/EP1852223B1/en not_active Expired - Fee Related
- 2007-04-29 CN CNA2007101011412A patent/CN101066588A/en active Pending
- 2007-05-02 JP JP2007121809A patent/JP5032882B2/en not_active Expired - Fee Related
- 2007-05-03 US US11/800,487 patent/US8176997B2/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2091304A5 (en) * | 1970-05-15 | 1972-01-14 | Hilti Ag | |
US5307881A (en) * | 1992-10-02 | 1994-05-03 | Ingersoll-Rand Company | Flushing system for a percussive, fluid-activated apparatus |
EP1252976A1 (en) * | 2001-04-20 | 2002-10-30 | Black & Decker Inc. | Percussion hammer with vibration damping mechanism |
US20040226729A1 (en) * | 2003-05-12 | 2004-11-18 | Nitto Kohki Co., Ltd. | Impact tool |
WO2006004547A1 (en) * | 2004-07-05 | 2006-01-12 | Atlas Copco Construction Tools Ab | Impact tool with a movably supported impact mechanism |
Also Published As
Publication number | Publication date |
---|---|
EP1852223B1 (en) | 2014-04-23 |
US8176997B2 (en) | 2012-05-15 |
CN101066588A (en) | 2007-11-07 |
JP5032882B2 (en) | 2012-09-26 |
JP2007296634A (en) | 2007-11-15 |
US20070261871A1 (en) | 2007-11-15 |
EP1852223A3 (en) | 2013-01-02 |
DE102006000209A1 (en) | 2007-11-15 |
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