EP0293706A1 - Outil de vissage - Google Patents

Outil de vissage Download PDF

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Publication number
EP0293706A1
EP0293706A1 EP88108204A EP88108204A EP0293706A1 EP 0293706 A1 EP0293706 A1 EP 0293706A1 EP 88108204 A EP88108204 A EP 88108204A EP 88108204 A EP88108204 A EP 88108204A EP 0293706 A1 EP0293706 A1 EP 0293706A1
Authority
EP
European Patent Office
Prior art keywords
screwdriver according
housing
electric motor
screwdriver
motor
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
Application number
EP88108204A
Other languages
German (de)
English (en)
Other versions
EP0293706B1 (fr
Inventor
Heinz-Gerhard Dipl.-Ing. Anders
Wolfgang Alender
Franz Heim
Eugen Mattheiss
Hans Dipl.-Ing.(Fh) Roemischer
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.)
Deutsche Gardner Denver GmbH
Original Assignee
Gardner Denver Deutschland GmbH
Deutsche Gardner Denver GmbH
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 Gardner Denver Deutschland GmbH, Deutsche Gardner Denver GmbH filed Critical Gardner Denver Deutschland GmbH
Publication of EP0293706A1 publication Critical patent/EP0293706A1/fr
Application granted granted Critical
Publication of EP0293706B1 publication Critical patent/EP0293706B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
    • B25B23/147—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for electrically operated wrenches or screwdrivers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
    • 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
    • B25F5/008—Cooling means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25G—HANDLES FOR HAND IMPLEMENTS
    • B25G1/00—Handle constructions
    • B25G1/10—Handle constructions characterised by material or shape
    • B25G1/105—Handle constructions characterised by material or shape for screwdrivers, wrenches or spanners

Definitions

  • the invention relates to a screwdriver according to the preamble of claim 1.
  • the housing that accommodates the transmission and the drive is made in two parts from a plastic.
  • the electric motor and the gearbox are inserted into one housing shell and then held in their installed position by fitting the other housing shell.
  • This method of assembly is complex because the individual components have to be inserted exactly into one housing shell so that the other housing shell can be put on without difficulty.
  • the electric motor generates considerable heat during use of the screwdriver, which is absorbed by the housing. Since it is made of plastic, it heats up relatively strongly and generally requires cooling.
  • the invention has for its object to design the generic screwdriver so that the electric motor and the gear can be mounted in the housing without difficulty, which is designed in this way should be that it does not heat up excessively during operation of the screwdriver.
  • the housing is made in one piece.
  • the housing does not have to be assembled in a special operation.
  • the electric motor and the gearbox can rather be pushed directly into the housing. Since it is formed by an extruded profile part, it can easily be produced in the desired shape. This also eliminates the need for adhesive and / or screwing work, as is required in two-part housings, to connect the housing parts to one another.
  • the housing is formed by an extruded profile part, the cooling fins provided on its outside can already be provided during the extrusion process, so that the cooling fins then no longer have to be separately mounted on the housing.
  • the cooling fins ensure that the housing does not heat up significantly even when the screwdriver according to the invention is in continuous operation. As a result of the cooling fins, no separate cooling of the screw housing is necessary as with housings which are made of plastic.
  • 1 to 8 is an electric screwdriver with a housing 1, in which control electronics 2 (FIG. 4), a motor 3 and a gear unit 4 are accommodated. At one end of the housing 1 there is a sensor 5 with which the applied torque and the angle of rotation can be determined in a known manner. In the area below the transducer 5, an output shaft 6 protrudes from the housing 1, on which a screwing tool holder 7 is seated. The output shaft 6 runs in the axial direction of the housing.
  • sockets 8 and 9 are provided for connecting a measuring case and a power unit.
  • adjusters 10, 11 (FIG. 2) on this rear side of the housing, by means of which two potentiometers 12 (FIG. 4) accommodated in the housing 1 can be set for setting two torques. 4 shows only one of the two potentiometers.
  • the drive shaft 6a is arranged at right angles to the longitudinal axis of the housing 1.
  • a handle 13 with an on-off switch 14 is connected to the opposite end of the housing, with which the screwdriver can be switched by hand.
  • the housing 1 is of the same design as in the screwdriver according to FIGS. 1 and 2.
  • the housing 1 is provided on the outside with cooling fins 15 which extend over the entire length of the housing. 6 shows, the cooling fins 15 are on the opposite longitudinal sides and on the underside intended.
  • the housing is made of metal and is formed by an extruded profile part, which is particularly easy to manufacture.
  • the housing 1 can be easily produced by separating it from the extruded profile part.
  • the cooling fins 15 provided for cooling the housing 1 are formed in one piece with the housing and, since it is extruded, are already present after the extrusion process, so that the cooling fins 15 do not have to be retrofitted or worked out of the housing.
  • the cooling fins 15 ensure sufficient cooling when the screwdriver is in use, so that the heat generated by the electric motor 3 does not lead to excessive heating of the housing 1 even during continuous operation of the screwdriver.
  • the housing 1 of the screwdriver itself forms a heat sink, so that no separate cooling of the housing is required.
  • the housing 1 has two receiving spaces 16 and 17 which are separated from one another by an intermediate wall 18. It is formed in one piece with the housing.
  • the receiving space 16 has a rectangular outline, while the receiving space 17 has a circular outline (Fig. 6).
  • the control electronics 2 are accommodated in the receiving space 16, while the electric motor 3 and the gear unit 4 are located in the receiving space 17.
  • the receiving space 16 is closed at one end by a connection 19 for the sensor 5.
  • the intermediate wall 18 has the advantage that the electric motor 3 and the gear unit 4 are supported and supported over their entire circumference and that the control electronics 2 are completely separate from the electric motor and the gear unit.
  • the gear unit is usually lubricated with grease so that there would be the danger, if there were no partition, that grease would get to the electronic parts of the control electronics and could lead to failure of the control electronics. Since the intermediate wall 18 is made in one piece with the housing 1 is formed, it arises during extrusion, so that no additional assembly work is necessary to provide the partition.
  • the intermediate wall 18 does not extend over the entire length of the housing 1.
  • the intermediate wall 18 ends with Distance from an end cover 21, with which the receiving spaces 16 and 17 can be closed at the end opposite the drive shaft.
  • the end cover 21 is screwed onto the corresponding end face of the housing 1.
  • a through opening 22 for the electrical feed lines 20 is formed between the end cover 21 and the intermediate wall 18.
  • the housing 1 is designed so that the parts to be accommodated in the housing can be easily assembled. They can be inserted into the corresponding receiving spaces 16 and 17 from the ends of the housing.
  • the electric motor 3, which has a cylindrical housing, is pushed into the receiving space 17 from this end of the housing before the end cover 21 is attached.
  • the wall of the receiving space 17 is provided with a radially inwardly projecting preferably circumferential stop shoulder 23 (FIG. 4) which serves as a stop when the electric motor 3 is inserted.
  • the corresponding boards 24 of the control electronics 2 are pushed into the receiving space 16.
  • the circuit board 24 is designed such that it is secured in the longitudinal direction in the assembled position in the receiving space 16.
  • the end cover 21 is placed on the housing end and screwed on.
  • the engine 3 is interposed by At least one spring, in the exemplary embodiment of a plurality of plate springs 25, is axially secured to the end cover 21 in the receiving space 17 via ribs 40 located on a spacer sleeve 26.
  • the plate springs 25 surround the spacer sleeve 26, which is preferably made of electrically insulating plastic. It lies over its base 27 on the inside of the end cover 21 and ends at an axial distance from the motor 3 (FIG. 5).
  • the socket 9 for the power section projects through the bottom 27 of the spacer sleeve 26 and through the end cover 21. Since the electrical leads 20 are also led to the socket 9, the spacer sleeve 26 is provided with a corresponding through opening 28 for the leads.
  • the spacer sleeve 26 is provided with barbs 29 distributed over its circumference, which protrude beyond the side of the spacer sleeve facing away from the base 27 and prevent the disk springs 25 from falling off the spacer sleeve during dismantling. In the installation position shown in FIG. 5, the barbs 29 protrude into recesses 30 in the end of the housing of the motor 3.
  • the socket 9 has a flange 31 which is held between the bottom 27 of the spacer sleeve 26 and the end cover 21.
  • the socket 8 On the spacer sleeve 26, the socket 8 is also attached for the connection of a measuring case. It also has an annular collar 32 which is held between the end cover 21 and a flange 33 which is fastened to the bottom 27 of the spacer sleeve 26.
  • the socket 8 itself is arranged outside the spacer sleeve 26 and abuts against it.
  • the socket 8 is also below the opening 34 of the end cover 21st
  • the gear unit 4 After assembly of the motor 3 and the end cover 21, the gear unit 4 is pushed into the receiving space 17 from the opposite end face 35 of the housing 1.
  • the gear unit 4 has a cylindrical housing which on its side facing the motor has axially projecting form-locking parts 36 (FIG. 4) which engage in corresponding counter-form-locking parts 37 on the outside of the housing of the motor 3.
  • the housing of the gear unit 4 preferably has two diametrically opposed form-locking parts 36, which are lobe-shaped and taper towards their free end. When the gear unit 4 is inserted, the form-locking parts 36 thereby easily enter the counter-form-locking parts 37 of the motor 3 designed as recesses or recesses.
  • the form-locking parts 36 ensure an exact alignment between the motor 3 and the gear unit 4 during insertion.
  • the drive connection between a (not shown) pinion shaft of the motor 3 and a (not shown) driver of the gear unit 4 is achieved.
  • the housing of the gear unit 4 like the housing of the motor 3, lies over its entire circumference on the inner wall of the receiving space 17, so that both components are properly secured in position.
  • the gear unit 4 is then held in the receiving space 17 by the driven part 38 (FIG. 1), 39 (FIG. 3) with the respective output shaft 6, 6a.
  • the output parts 38 and 39 are designed such that the gear unit 4 is displaced in the receiving space 17 when the output parts are attached to the motor 3.
  • the motor 3 is moved against the force of the plate springs 25 in the receiving space 17, so that it is spaced from the Stop shoulder 23 has (Fig. 4).
  • the plate springs 25 are thus under tension and ensure that the pinion shaft of the motor and the driver of the gear unit 4 are firmly engaged with each other.
  • the motor 3 is not positively connected to the housing 1, but is only coupled to the gear unit 4.
  • the reaction torque occurring during screwing is passed through the gear unit 4 into the driven part 38, 39, which absorbs these reaction torques via a spline (not shown). Since the motor 3 is not connected to the housing 1, it does not have to absorb the reaction forces, so that in particular the screwdriver according to FIG. 3, which is held by the user in the hand, can be handled easily.
  • the spacer sleeve 26 is provided over its circumference with ribs 40 (FIG. 5) which extend forward from the bottom 27, but are shorter than the spacer sleeve.
  • the plate springs 25 are supported on the ribs 40.
  • the ribs 40 rest on the wall of the receiving space 17. As a result, the spacer sleeve 26 is also held correctly in the installed position and aligned with the motor 3.
  • the housing 1 is narrower in the area of the receiving space 16 receiving the control electronics 2 than in the area having the receiving space 17.
  • the housing 1 therefore takes up relatively little space despite the two receiving spaces 16, 17 and can be installed in a space-saving manner at the respective place of use.
  • eight screwdrivers are arranged in a circle.
  • the screwdrivers although they have the two receiving spaces 16 and 17 and are therefore larger than the housing of known screwdrivers, can be set as closely circularly as these known but smaller housings.
  • the housing 1 is provided on its one outer side 41 (FIG. 6) with small elevations (not shown), between which a type plate can be inserted, which bears against these elevations and is thus secured against unintentional loosening.
  • the nameplate is attached to the housing 1 in a known manner.
  • the end cover 21 forms a connector plate in which the sockets 8 and 9 are mounted. Since the sockets 8 and 9 are clamped via their flanges 31 and 33 between the end cover and the bottom 27 of the spacer sleeve 26, the sockets can be arranged loosely in the end cover. Only when the end cover is screwed on are the sockets fastened in their respective positions. To position the sockets 8 and 9, the spacer sleeve 26 is provided with retaining cams 42 and 45 which engage in corresponding recesses 44 and 45 in the flange 31 and 33 of the sockets.
  • the end cover 21 can be replaced with the handle 13 (Fig. 3).
  • the sockets 8 and 9, which are loosely arranged in the end cover, remain in the housing 1 when the end cover is removed and are then centered and held in the housing again by the handle 13.
  • the handle 13 has a connecting plate 46 (FIG. 3) which is screwed onto the end face of the housing 1 in the same way as the end cover 21.
  • the supply line to the sockets 8 and 9 runs in the handle 13, at the end of which the corresponding supply lines are then connected can be. With the handle 13, the screwdriver can be converted into a handheld screwdriver in a few simple steps.
  • the motor 3 is usually a direct current motor, the carbon brushes of which generate abrasion. So that these carbon abrasion particles do not get into the housing 1, the housing of the motor 3 is sealed off from the wall of the receiving space 17, preferably with 0-rings.
  • One of the screws 47, with which the end cover 21 is fastened to the housing 1, is longer than the other screws 47.
  • the longer screw 47 is screwed into an end threaded hole 48 in the motor housing.
  • This longer screw 47 can be used as a tension screw and removal aid if the motor housing should get caught in the receiving space 17.
  • the end cover 21 or the handle 13 is removed from the housing 1 and then the longer screw is screwed into the threaded hole 48 of the motor housing.
  • This screw can be gripped from the outside, so that the motor 3 can then be easily pulled out of the housing 1 with the aid of this tension screw.
  • the transducer 5 During the screwing process, the transducer 5 generates an output signal which is fed to an encoder amplifier 49 (FIG. 7). It amplifies the signal supplied by the transducer 5 and feeds it to an evaluation unit 50. It compares the actual value determined by the transducer 5 with a predetermined target value, which is entered via the potentiometer 12. With one potentiometer, the setpoint value of the torque can be specified with which the screwdriver is screwed onto the part to be screwed until the screw head or nut is put on. With the other The tightening torque with which the screws or nuts should be tightened can be set using the potentiometer. When the actual value of the torque has reached the predetermined target value of the torque, the evaluation unit 50 emits an output signal.
  • This output signal is fed to switching control electronics 53, which in turn outputs an output signal to a control circuit 54. It ensures that the direction of rotation of the screwdriver motor is reversed.
  • the output signal of the control circuit 54 is fed to an output stage 55, which is a 4Q-Mos power output stage. The output signal is then used to reverse the direction of rotation of the screwdriver motor.
  • the encoder amplifier 49, the evaluation unit 50, the switching control electronics 53, the control circuit 54 and the output stage 55 are supplied with the required voltage by a supply part 56.
  • the switching control electronics has an evaluation output 57, a start input 58 and an input for the torque switch 59.
  • the respective torque value can be recorded at the evaluation output 57.
  • the motor 3 of the spindle can be stopped or started with the start input 58.
  • the respective tightening torque can be set with the torque switch 59.
  • a signal necessary for rotating the motor 3 or the drive shaft 6, 6a is given via the control circuit 54 to the output stage 55.
  • the drive shaft 6, 6a rotates to the right, the screw or nut being screwed in.
  • the transducer 5 measures the torque during the screwing process and, in accordance with the respective actual torque, sends signals to the transmitter amplifier 49, which amplifies these signals and sends them to the evaluation unit 50.
  • the Evaluation unit 50 compares the actual value of the torque with the target value of the torque, which is set with the potentiometers 12. When the predetermined target torque is reached, the evaluation unit 50 outputs a switching signal to the switching control electronics 53.
  • the control circuit 54 (FIG. 8) has a differential amplifier 60 and a semiconductor switch 61 which is connected to the output of the differential amplifier 60.
  • the motor 3 of the screwdriver is a direct current motor, the armature voltage of which is tapped directly and fed to the differential amplifier 60. As long as the drive shaft 6, 6a turns to the right to tighten the screws or nuts, there is a minus potential at the differential amplifier 60. The negative output signal of the differential amplifier 60 is fed to the semiconductor switch 61.
  • the evaluation unit 50 determines that the actual torque corresponds to the target torque, the evaluation unit 50 sends a signal to the switching control electronics 53, which then outputs an output signal to the semiconductor switch 61 of the control circuit 54.
  • the semiconductor switch 61 is switched over so that the control loop circuit now receives the minus signal of the differential amplifier 60.
  • the control circuit 54 then outputs a corresponding signal via the output stage 55 to the motor 3 such that it is braked.
  • the engine 3 is thereby reduced in its speed until it reaches the value 0. This braking process takes place within a very short time because the semiconductor switch 61 switches suddenly and the output stage 55 can switch even at low voltages or powers.
  • a 4Q-Mos power output stage is preferably used as the output stage, the transistors of which react extremely quickly.
  • the semiconductor switch 61 preferably fast-reacting MOS transistors are used.
  • the armature voltage is therefore used, with which the switch-off process can be carried out more precisely than with the current.
  • the training described ensures that the screwdriver 3 switches off immediately when the set limit torque is reached and has no overrun. As a result, the screws or nuts are tightened to the desired specified target value torque.
  • a counter torque is applied to the motor 3, which leads to the rapid and precise switching off of the motor.
  • control electronics 2 are accommodated in the receiving space 16. It is also possible to accommodate the control electronics in a separate housing part that is attached to the screw housing.
EP88108204A 1987-06-05 1988-05-21 Outil de vissage Expired - Lifetime EP0293706B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873718804 DE3718804A1 (de) 1987-06-05 1987-06-05 Schrauber
DE3718804 1987-06-05

Publications (2)

Publication Number Publication Date
EP0293706A1 true EP0293706A1 (fr) 1988-12-07
EP0293706B1 EP0293706B1 (fr) 1991-09-04

Family

ID=6329091

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88108204A Expired - Lifetime EP0293706B1 (fr) 1987-06-05 1988-05-21 Outil de vissage

Country Status (2)

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EP (1) EP0293706B1 (fr)
DE (2) DE3718804A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0842743A1 (fr) * 1996-11-19 1998-05-20 Atlas Copco Tools Ab Clé motorisée avec connexion pour câble à plusieurs conducteurs
EP1398864A2 (fr) * 2002-09-10 2004-03-17 Matsushita Electric Works, Ltd. Outil électrique
EP1682297A1 (fr) * 2003-10-28 2006-07-26 Ibex Industries Limited Outil a main electrique
EP1890844A1 (fr) * 2005-05-20 2008-02-27 Atlas Copco Construction Tools AB Outil electrique portable a moteur et commande electronique et module de communication
EP2036681A1 (fr) * 2007-09-14 2009-03-18 Alexander Kipfelsberger Visseuse, en particulier visseuse de court-circuit
FR2983107A1 (fr) * 2011-11-25 2013-05-31 Renault Georges Ets Visseuse electrique de type broche destinee a etre fixee sur un bati.
EP2502711A3 (fr) * 2011-03-22 2013-08-14 Makita Corporation Outil électrique

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3938787A1 (de) * 1989-11-23 1991-05-29 Gardner Denver Gmbh Elektroschrauber
US5361853A (en) * 1991-11-29 1994-11-08 Ryobi Limited Power tool
DE102004047606A1 (de) * 2004-09-30 2006-04-06 Hilti Ag Bohr- und/oder Meisselhammer
DE102012223717A1 (de) * 2012-12-19 2014-06-26 Robert Bosch Gmbh Handwerkzeugmaschine
DE102012223715A1 (de) * 2012-12-19 2014-06-26 Robert Bosch Gmbh Handwerkzeugmaschine
DE102018201074A1 (de) * 2018-01-24 2019-07-25 Robert Bosch Gmbh Verfahren zur Steuerung eines Schlagschraubers
US11139722B2 (en) 2018-03-02 2021-10-05 Black & Decker Inc. Motor having an external heat sink for a power tool

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU495107B2 (en) * 1974-08-08 1977-02-10 Olympic Power Tool Service And Supply Pty. Ltd. Method of manufacturing electrical machines and components therefor
DE2651905A1 (de) * 1975-11-14 1977-05-18 Atlas Copco Ab Elektrischer mutternschrauber
US4153990A (en) * 1976-10-09 1979-05-15 Ebrains, Inc. Power tool
EP0088836A1 (fr) * 1982-03-11 1983-09-21 Katsuyuki Totsu Tournevis électrique
DE3332036A1 (de) * 1982-09-11 1984-03-15 Robert Bosch Gmbh, 7000 Stuttgart Anordnung zur halterung einer elektrischen kleinmaschine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU495107B2 (en) * 1974-08-08 1977-02-10 Olympic Power Tool Service And Supply Pty. Ltd. Method of manufacturing electrical machines and components therefor
DE2651905A1 (de) * 1975-11-14 1977-05-18 Atlas Copco Ab Elektrischer mutternschrauber
US4153990A (en) * 1976-10-09 1979-05-15 Ebrains, Inc. Power tool
EP0088836A1 (fr) * 1982-03-11 1983-09-21 Katsuyuki Totsu Tournevis électrique
DE3332036A1 (de) * 1982-09-11 1984-03-15 Robert Bosch Gmbh, 7000 Stuttgart Anordnung zur halterung einer elektrischen kleinmaschine

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0842743A1 (fr) * 1996-11-19 1998-05-20 Atlas Copco Tools Ab Clé motorisée avec connexion pour câble à plusieurs conducteurs
US5893420A (en) * 1996-11-19 1999-04-13 Atlas Copco Tools Ab Multi-core cable connector for power wrench
EP1398864A2 (fr) * 2002-09-10 2004-03-17 Matsushita Electric Works, Ltd. Outil électrique
EP1398864A3 (fr) * 2002-09-10 2006-07-12 Matsushita Electric Works, Ltd. Outil électrique
EP1682297A1 (fr) * 2003-10-28 2006-07-26 Ibex Industries Limited Outil a main electrique
EP1682297A4 (fr) * 2003-10-28 2009-11-11 Ibex Ind Ltd Outil a main electrique
EP1890844A1 (fr) * 2005-05-20 2008-02-27 Atlas Copco Construction Tools AB Outil electrique portable a moteur et commande electronique et module de communication
EP1890844A4 (fr) * 2005-05-20 2010-01-27 Atlas Copco Constr Tools Ab Outil electrique portable a moteur et commande electronique et module de communication
EP2036681A1 (fr) * 2007-09-14 2009-03-18 Alexander Kipfelsberger Visseuse, en particulier visseuse de court-circuit
EP2502711A3 (fr) * 2011-03-22 2013-08-14 Makita Corporation Outil électrique
FR2983107A1 (fr) * 2011-11-25 2013-05-31 Renault Georges Ets Visseuse electrique de type broche destinee a etre fixee sur un bati.

Also Published As

Publication number Publication date
DE3718804A1 (de) 1988-12-15
DE3864589D1 (de) 1991-10-10
EP0293706B1 (fr) 1991-09-04

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