US20050247462A1 - Hand machine tool with a hammer mechanism - Google Patents

Hand machine tool with a hammer mechanism Download PDF

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Publication number
US20050247462A1
US20050247462A1 US11/120,355 US12035505A US2005247462A1 US 20050247462 A1 US20050247462 A1 US 20050247462A1 US 12035505 A US12035505 A US 12035505A US 2005247462 A1 US2005247462 A1 US 2005247462A1
Authority
US
United States
Prior art keywords
hammer
spring mechanism
tool
machine tool
hand machine
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.)
Abandoned
Application number
US11/120,355
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English (en)
Inventor
Gerhard Meixner
Thilo Henke
Juergen Lennartz
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.)
Robert Bosch GmbH
Original Assignee
Individual
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 Individual filed Critical Individual
Assigned to ROBERT BOSCH GMBH reassignment ROBERT BOSCH GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: LENNARTZ, JUERGEN, HENKE, THILO, MEIXNER, GERHARD
Publication of US20050247462A1 publication Critical patent/US20050247462A1/en
Abandoned legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D11/00—Portable percussive tools with electromotor or other motor drive
    • B25D11/06—Means for driving the impulse member
    • B25D11/12—Means for driving the impulse member comprising a crank mechanism
    • B25D11/125—Means for driving the impulse member comprising a crank mechanism with a fluid cushion between the crank drive and the striking body
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D11/00—Portable percussive tools with electromotor or other motor drive
    • B25D11/06—Means for driving the impulse member
    • B25D11/12—Means for driving the impulse member comprising a crank mechanism
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2216/00—Details of 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
    • B25D2216/0007—Details of percussion or rotation modes
    • B25D2216/0015—Tools having a percussion-only mode
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2216/00—Details of 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
    • B25D2216/0007—Details of percussion or rotation modes
    • B25D2216/0023—Tools having a percussion-and-rotation mode
    • 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
    • B25D2250/185—Pressure equalising means between sealed chambers
    • 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
    • B25D2250/371—Use of springs
    • 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
    • B25D2250/371—Use of springs
    • B25D2250/375—Fluid springs

Definitions

  • the present invention relates to a hand machine tool—preferably a hammer drill and/or slide hammer—equipped with a hammer mechanism, which has a hammer that moves axially back and forth in a guide tube; a spring mechanism is provided, which exerts a force on the hammer and can set the hammer into a movement toward a tool that can be inserted into the hand machine tool.
  • a hand machine tool preferably a hammer drill and/or slide hammer
  • a compression hammer mechanism of this kind which executes repeating hammering movements and is intended for an electro-pneumatic hammer drill and/or slide hammer of the kind known from DE 198 10 088 C1, is comprised of an eccentric drive unit, a piston, and a hammer. These three elements serve to convert a rotating motion into a hammering motion.
  • the axial back-and-forth motion of the hammer in a guide tube occurs in the following way: the piston, which the eccentric drive unit moves forward, compresses the air cushion between the piston and the hammer, thus causing the hammer to fly freely toward the tool inserted in the machine.
  • the hammer imparts its hammering energy to the tool and from it, receives an impetus in the backward direction.
  • the eccentric drive unit also moves the piston backward, which produces a certain vacuum in the air cushion between the piston and the hammer.
  • the piston moves the piston backward, which produces a certain vacuum in the air cushion between the piston and the hammer.
  • the piston reaches its reversal point but the hammer is still flying toward the piston, the air cushion between the two is compressed, generating a compression, which, with a renewed forward motion of the piston, then causes the hammer to fly at an even higher speed in the forward direction toward the tool.
  • a compression hammer mechanism of this kind the piston and the hammer move with the same frequency.
  • a high individual hammering energy at a low hammering frequency is not possible with a hammer mechanism of this kind.
  • an eccentric drive unit sets an angle made of spring steel into an oscillating motion and this spring steel piece drives the hammer forward toward the tool or toward an intermediate anvil provided between the tool and hammer.
  • the recoil energy of the hammer is stored in the spring buckle and released again during forward motion as in a pneumatic hammer mechanism.
  • the object of the present invention is to disclose a hammer mechanism of the type mentioned at the beginning, which can be implemented with the simplest possible technical means and is able to generate a high individual hammering energy at a low hammering frequency.
  • a suitable drive unit for the hammer produces a frictional engagement with the hammer after an impact has been imparted, moves it counter to the force of the spring mechanism, and then releases the frictional engagement again as soon as the hammer has reached a certain position in its movement counter to the force of the spring mechanism.
  • An advantageous spring mechanism is comprised of a pressure reservoir that is filled with a compressible medium and situated in the guide tube, on the side of the hammer oriented away from the tool.
  • the pressure reservoir can be filled with a gas, for example air, or also a fluid.
  • a pump can be provided, which supplies compressible medium to the pressure reservoir to compensate for leakage losses.
  • the pumping capacity of this pump can be very low because it only needs to compensate for leakage losses in the pressure reservoir.
  • Such a pump which does not take up much space or weigh much, can be integrated into the hand machine tool.
  • Another advantageous spring mechanism can be comprised of one or more compression springs and/or tension springs that are supported against the hammer on the one hand and against a shoulder that is stationary in the movement direction of the hammer on the other hand.
  • FIG. 1 shows a longitudinal section through a hammer drill and/or slide hammer equipped with a hammer mechanism and a spring mechanism embodied in the form of a pressure reservoir and
  • FIG. 2 shows a longitudinal section through a hammer drill and/or slide hammer equipped with a hammer mechanism and a spring mechanism embodied in the form of compression/tension springs.
  • FIG. 1 shows a longitudinal section through a hand machine tool equipped with a hammer mechanism.
  • this hand machine tool is a hammer drill and/or slide hammer.
  • the schematic depiction of the hand machine tool shows only the hammer mechanism, which is the subject of the present invention. All other functional units usually provided in a hand machine tool are not shown.
  • the hammer mechanism is comprised in an intrinsically known way of a hammer 1 that is supported so that it can move in a reciprocating fashion in a guide tube 2 .
  • a tool 3 for example a drill bit or chisel, is inserted into a tool socket of the hand machine tool. If the hammer 1 flies forward toward the tool 3 , then the hammer 1 imparts its hammering impetus to the tool 3 . Between the tool 3 and the hammer 1 , it is also possible for an intermediate anvil (not shown here) to be provided in the guide tube 2 , which transmits the hammering impetus from the hammer 1 to the tool 3 .
  • this spring mechanism is a pressure reservoir 4 , which is filled with a compressible medium and is situated in the guide tube 2 on the side of the hammer 1 oriented away from the tool.
  • the pressure reservoir 4 is delimited by the side wall of the guide tube 2 , the hammer 1 sliding in the guide tube, and a back wall 5 of the guide tube 2 at its end oriented away from the tool 3 .
  • a seal 6 is inserted between the hammer 1 and the side wall of the guide tube 2 and prevents the compressible medium from escaping from the pressure reservoir 4 .
  • the compressible medium can be a fluid or a gas.
  • the pressure reservoir 4 is filled with air.
  • the pressure reservoir 4 is connected to a pump 7 that can supply compressible medium to the pressure reservoir 4 in order to compensate for leakage losses. Since it is only necessary to compensate for leakage losses of the compressible medium, it is sufficient to provide a small pump 7 with a low pumping capacity, which can easily be accommodated in the hand machine tool because of its low weight and small volume.
  • the hammer mechanism has a drive unit, which, after each impact with the tool 3 , sets the hammer 1 into a motion counter to the force of the spring mechanism, thus stressing the spring mechanism.
  • the aforementioned drive unit is designed so that after the stressing of the spring mechanism, it abruptly releases the hammer 1 again so that, driven by the spring mechanism, the hammer 1 flies toward the tool. Because the spring mechanism is stressed not only by the recoil force of the hammer 1 , but also actively by the separate drive unit, which exerts a very high stress on it, a very powerful hammering force is imparted to the hammer 1 upon release of the spring mechanism. Consequently, a very high individual hammering energy can be generated, even at a relatively low hammering frequency.
  • the above-described drive unit is embodied as follows:
  • the side of the hammer 1 oriented away from the tool 3 is attached to a rod 8 , which extends in the direction of the longitudinal axis of the guide tube 2 and passes through the back wall 5 of the guide tube 2 .
  • a seal 9 between the rod 8 and the guide opening in the rear wall 5 of the guide tube 2 prevents compressible medium from escaping from the pressure reservoir 4 .
  • the rod 8 ends in the vicinity of a driving gear 10 , which is rotatable around an axis that extends perpendicular to the longitudinal axis of the guide tube 2 .
  • the shaft 11 of a motor not shown, sets the driving gear into rotation, e.g. by means of a parallel shaft gearing (not shown in the drawing).
  • a pin 13 is provided, which protrudes from the driving gear 10 perpendicular to the plane of the drawing.
  • the end of the rod 8 oriented toward the driving gear 10 is embodied in the form of a hook 14 so that when the driving gear 10 rotates, the pin 13 can travel into the hook 14 . If the hammer 1 is moving backward after striking the tool, then the rod with the hook 14 slides toward the driving gear 10 .
  • the pin 13 of the rotating driving gear 10 slides into the hook 14 and carries the rod 8 with the hammer 1 toward the driving gear 10 —clockwise in the exemplary embodiment—so that the hammer 1 moves toward the back wall 5 of the guide tube 2 , thus causing the medium in the pressure reservoir 4 to be compressed. This results in a sharp increase in the pressure on the hammer 1 toward the tool 3 .
  • the driving gear 10 has completed a half rotation and the pin 13 has thus reached a position 13 ′, which is the furthest from the guide tube 2 , then the pin 13 slides back out of the hook 14 again. At this moment, the hammer 1 is released and can move toward the tool 3 to strike it again, driven by the pressure in the pressure reservoir 4 .
  • the rotation speed of the driving gear 10 must be set so that whenever the hammer 1 is traveling backward after an impact, the hook 14 at the end of the rod 8 is situated directly over the pin 13 of the driving gear 10 .
  • FIG. 2 shows a schematic cross section through a hand machine tool in which the spring mechanism is not comprised of a pressure reservoir as in the exemplary embodiment of FIG. 1 , but instead, one or more tension and/or compression springs are used. Aside from the spring mechanism, all other functional elements are the same as in the previously described exemplary embodiment of FIG. 1 and are also provided with the same reference numerals in FIG. 2 as in FIG. 1 .
  • the chamber of the guide tube 2 between the hammer 1 and the back wall 5 of the guide tube contains a compression spring 15 , which rests against the back wall 5 of the guide tube 2 at one end and against the hammer 1 at the other.
  • this compression spring 15 or in addition to it, it is also possible to provide a tension spring 16 on the side of the hammer 1 oriented toward the tool 3 . This tension spring is connected to the hammer 1 at one end and is connected to a shoulder of the guide tube 2 at the other.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
US11/120,355 2004-05-07 2005-05-03 Hand machine tool with a hammer mechanism Abandoned US20050247462A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004022623.7 2004-05-07
DE102004022623A DE102004022623A1 (de) 2004-05-07 2004-05-07 Handwerkzeugmaschine mit einem Schlagwerk

Publications (1)

Publication Number Publication Date
US20050247462A1 true US20050247462A1 (en) 2005-11-10

Family

ID=34684124

Family Applications (1)

Application Number Title Priority Date Filing Date
US11/120,355 Abandoned US20050247462A1 (en) 2004-05-07 2005-05-03 Hand machine tool with a hammer mechanism

Country Status (5)

Country Link
US (1) US20050247462A1 (fr)
CN (1) CN1693034A (fr)
DE (1) DE102004022623A1 (fr)
FR (1) FR2869825A1 (fr)
GB (1) GB2413777A (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7198116B1 (en) * 2005-10-25 2007-04-03 Xiaojun Chen Wholly air-controlled impact mechanism for high-speed energy-accumulating pneumatic wrench
US20090020299A1 (en) * 2007-07-19 2009-01-22 Hilti Aktiengesellschaft Hand-held power tool with a pneumatic percussion mechanism
US20110150590A1 (en) * 2009-12-18 2011-06-23 Buchner David J Installation System for Ceiling Mounted Items
US20130277077A1 (en) * 2012-04-19 2013-10-24 Hilti Aktiengesellschaft Machine tool
CN104227666A (zh) * 2013-06-20 2014-12-24 苏州宝时得电动工具有限公司 一种电动榔头
JP2015517342A (ja) * 2010-12-29 2015-06-22 オルトー テクノロジース エル エル シーＯｒｔｈｏ Ｔｅｃｈｎｏｌｏｇｉｅｓ，Ｌｌｃ 整形外科用衝撃を付与する電気モータ駆動式器具
US10420567B2 (en) 2010-12-29 2019-09-24 DePuy Synthes Products, Inc. Electric motor driven tool for orthopedic impacting
US11076903B2 (en) 2016-08-31 2021-08-03 DePuy Synthes Products, Inc. Orthopedic device delivering a controlled, repeatable impact
US11134962B2 (en) 2016-08-31 2021-10-05 DePuy Synthes Products, Inc. Orthopedic impacting device having a launched mass delivering a controlled, repeatable and reversible impacting force
US11579344B2 (en) 2012-09-17 2023-02-14 Government Of The United States Of America, As Represented By The Secretary Of Commerce Metallic grating
SE2230406A1 (en) * 2022-12-09 2024-03-12 Atlas Copco Ind Technique Ab Hand-held percussive tool

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010029918A1 (de) * 2010-06-10 2011-12-15 Hilti Aktiengesellschaft Werkzeugmaschine
CN101949260B (zh) * 2010-07-22 2013-07-24 浙江师范大学 一种储能后释放的冲击锤的辅锤机构及储能式冲击锤
CN103079771A (zh) * 2010-08-27 2013-05-01 博世电动工具（中国）有限公司 冲击机构
CN110340852B (zh) * 2019-08-13 2024-02-27 油特机械工具（大连）有限公司 一种高精度长寿命充电式冲点枪
CN112296947A (zh) * 2020-02-27 2021-02-02 杨新军 一种滑块撞击式冲击电钻

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US1464824A (en) * 1922-03-22 1923-08-14 Electric Hammer Company Electric hammer
USRE20365E (en) * 1937-05-18 Portable power hammer
US2145760A (en) * 1936-07-24 1939-01-31 Milwaukee Electric Tool Corp Electric hammer
US2501542A (en) * 1947-10-15 1950-03-21 Harold S Sheldon Hammer tool
US2655921A (en) * 1951-07-09 1953-10-20 Edward J Haboush Vibratory tool for operating bone sets, bone chisels, and bone nail drivers
US2905034A (en) * 1958-04-18 1959-09-22 Ralph M Turner Reciprocatory impact hand tool
US3599731A (en) * 1969-12-01 1971-08-17 Del Guy Inc Drilling apparatus
US3887018A (en) * 1974-01-25 1975-06-03 Murray L Jayne Fluid driven hammers
US4030556A (en) * 1975-09-22 1977-06-21 Phillips Raymond J Miniature impact tool
US4567951A (en) * 1983-02-12 1986-02-04 Robert Bosch Gmbh Hammer drill
US5117923A (en) * 1989-01-11 1992-06-02 Sulzer Brothers Limited Hydraulic jackhammer
US6116352A (en) * 1998-03-10 2000-09-12 Robert Bosch Gmbh Drilling and/or percussion power tool
US6523622B1 (en) * 1998-09-23 2003-02-25 Wacker Construction Equipment Ag Pneumatic percussion power tool with pneumatic returning spring

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GB1124527A (en) * 1966-05-19 1968-08-21 Sonomotive Engineers Ltd Improvements in or relating to percussive tools and machines
DE2346519A1 (de) * 1972-09-18 1974-04-11 Technology Inc Const Hydraulisch betriebene schlagvorrichtung
DE3428333C1 (de) * 1984-08-01 1986-03-13 Byrne, Rodger J., 4005 Meerbusch Elektrotacker

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE20365E (en) * 1937-05-18 Portable power hammer
US1464824A (en) * 1922-03-22 1923-08-14 Electric Hammer Company Electric hammer
US2145760A (en) * 1936-07-24 1939-01-31 Milwaukee Electric Tool Corp Electric hammer
US2501542A (en) * 1947-10-15 1950-03-21 Harold S Sheldon Hammer tool
US2655921A (en) * 1951-07-09 1953-10-20 Edward J Haboush Vibratory tool for operating bone sets, bone chisels, and bone nail drivers
US2905034A (en) * 1958-04-18 1959-09-22 Ralph M Turner Reciprocatory impact hand tool
US3599731A (en) * 1969-12-01 1971-08-17 Del Guy Inc Drilling apparatus
US3887018A (en) * 1974-01-25 1975-06-03 Murray L Jayne Fluid driven hammers
US4030556A (en) * 1975-09-22 1977-06-21 Phillips Raymond J Miniature impact tool
US4567951A (en) * 1983-02-12 1986-02-04 Robert Bosch Gmbh Hammer drill
US5117923A (en) * 1989-01-11 1992-06-02 Sulzer Brothers Limited Hydraulic jackhammer
US6116352A (en) * 1998-03-10 2000-09-12 Robert Bosch Gmbh Drilling and/or percussion power tool
US6523622B1 (en) * 1998-09-23 2003-02-25 Wacker Construction Equipment Ag Pneumatic percussion power tool with pneumatic returning spring

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070089890A1 (en) * 2005-10-25 2007-04-26 Xiaojun Chen Wholly air-controlled impact mechanism for high-speed energy-accumulating pneumatic wrench
US7198116B1 (en) * 2005-10-25 2007-04-03 Xiaojun Chen Wholly air-controlled impact mechanism for high-speed energy-accumulating pneumatic wrench
EP2017038B1 (fr) * 2007-07-19 2016-03-09 HILTI Aktiengesellschaft Outil manuel à percussion pneumatique
US20090020299A1 (en) * 2007-07-19 2009-01-22 Hilti Aktiengesellschaft Hand-held power tool with a pneumatic percussion mechanism
US8267189B2 (en) * 2007-07-19 2012-09-18 Hilti Aktiengesellschaft Hand-held power tool with a pneumatic percussion mechanism
US20110150590A1 (en) * 2009-12-18 2011-06-23 Buchner David J Installation System for Ceiling Mounted Items
US9931721B2 (en) * 2009-12-18 2018-04-03 Accelerated Fastening, LLC Installation system for ceiling mounted items
USRE47963E1 (en) 2010-12-29 2020-04-28 DePuy Synthes Products, Inc. Electric motor driven tool for orthopedic impacting
USRE48387E1 (en) 2010-12-29 2021-01-12 DePuy Synthes Products, Inc. Electric motor driven tool for orthopedic impacting
EP2846723A4 (fr) * 2010-12-29 2016-04-13 Ortho Technologies Llc Outil actionné par un moteur électrique pour impaction orthopédique
EP3162314A1 (fr) * 2010-12-29 2017-05-03 Medical Enterprises, LLC Outil entraîné par moteur électrique pour impact orthopédique
JP2018020183A (ja) * 2010-12-29 2018-02-08 メディカル エンタープライゼス， エルエルシー 整形外科用衝撃を付与する電気モータ駆動式器具
USRE49666E1 (en) 2010-12-29 2023-09-26 Depuy Synthes Products, Inc Electric motor driven tool for orthopedic impacting
US10420567B2 (en) 2010-12-29 2019-09-24 DePuy Synthes Products, Inc. Electric motor driven tool for orthopedic impacting
US11076867B2 (en) 2010-12-29 2021-08-03 DePuy Synthes Products, Inc. Electric motor driven tool for orthopedic impacting
USRE47997E1 (en) 2010-12-29 2020-05-19 DePuy Synthes Products, Inc. Electric motor driven tool for orthopedic impacting
USRE48184E1 (en) 2010-12-29 2020-09-01 DePuy Synthes Products, Inc. Electric motor driven tool for orthopedic impacting
USRE48251E1 (en) 2010-12-29 2020-10-13 DePuy Synthes Products, Inc. Electric motor driven tool for orthopedic impacting
JP2015517342A (ja) * 2010-12-29 2015-06-22 オルトー テクノロジース エル エル シーＯｒｔｈｏ Ｔｅｃｈｎｏｌｏｇｉｅｓ，Ｌｌｃ 整形外科用衝撃を付与する電気モータ駆動式器具
USRE48388E1 (en) 2010-12-29 2021-01-12 DePuy Synthes Products, Inc. Electric motor driven tool for orthopedic impacting
US20130277077A1 (en) * 2012-04-19 2013-10-24 Hilti Aktiengesellschaft Machine tool
US11579344B2 (en) 2012-09-17 2023-02-14 Government Of The United States Of America, As Represented By The Secretary Of Commerce Metallic grating
US11733439B2 (en) 2012-09-17 2023-08-22 Government Of The United States Of America. As Represented By The Secretary Of Commerce Process for making a metallic grating
CN104227666A (zh) * 2013-06-20 2014-12-24 苏州宝时得电动工具有限公司 一种电动榔头
US11076903B2 (en) 2016-08-31 2021-08-03 DePuy Synthes Products, Inc. Orthopedic device delivering a controlled, repeatable impact
US11083512B2 (en) 2016-08-31 2021-08-10 DePuy Synthes Products, Inc. Orthopedic device delivering a controlled, repeatable impact
US11134962B2 (en) 2016-08-31 2021-10-05 DePuy Synthes Products, Inc. Orthopedic impacting device having a launched mass delivering a controlled, repeatable and reversible impacting force
US11696770B2 (en) 2016-08-31 2023-07-11 Depuy Synthes Products, Inc Orthopedic impacting device having a launched mass delivering a controlled, repeatable and reversible impacting force
SE2230406A1 (en) * 2022-12-09 2024-03-12 Atlas Copco Ind Technique Ab Hand-held percussive tool
SE545906C2 (en) * 2022-12-09 2024-03-12 Atlas Copco Ind Technique Ab Hand-held percussive tool

Also Published As

Publication number Publication date
CN1693034A (zh) 2005-11-09
DE102004022623A1 (de) 2005-12-08
GB2413777A (en) 2005-11-09
FR2869825A1 (fr) 2005-11-11
GB0509188D0 (en) 2005-06-15

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Legal Events

Date Code Title Description
AS Assignment

Owner name: ROBERT BOSCH GMBH, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:MEIXNER, GERHARD;HENKE, THILO;LENNARTZ, JUERGEN;REEL/FRAME:016315/0146;SIGNING DATES FROM 20050421 TO 20050426

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION