EP2716414B1 - Schraubvorrichtung ohne Reaktion im Griff - Google Patents

Schraubvorrichtung ohne Reaktion im Griff Download PDF

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Publication number
EP2716414B1
EP2716414B1 EP13187303.6A EP13187303A EP2716414B1 EP 2716414 B1 EP2716414 B1 EP 2716414B1 EP 13187303 A EP13187303 A EP 13187303A EP 2716414 B1 EP2716414 B1 EP 2716414B1
Authority
EP
European Patent Office
Prior art keywords
housing
reducer
reaction
gear
planet
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
Application number
EP13187303.6A
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English (en)
French (fr)
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EP2716414A1 (de
Inventor
Nicolas Le Du
Damien Limousin
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.)
Georges Renault SAS
Original Assignee
Georges Renault SAS
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Filing date
Publication date
Application filed by Georges Renault SAS filed Critical Georges Renault SAS
Publication of EP2716414A1 publication Critical patent/EP2716414A1/de
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Publication of EP2716414B1 publication Critical patent/EP2716414B1/de
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Classifications

    • 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
    • B25F5/001—Gearings, speed selectors, clutches or the like specially adapted for rotary tools
    • 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
    • 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
    • B25B23/0078—Reaction arms
    • 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
    • B25F5/02—Construction of casings, bodies or handles
    • B25F5/025—Construction of casings, bodies or handles with torque reaction bars for rotary tools

Definitions

  • the field of the invention is that of the design and manufacture of screwdrivers.
  • the invention relates to a screw device according to the preamble of claim 1, the housing comprises a portion having a gripping handle and a portion housing a reduction, these two portions being connected by a rotary junction.
  • a screw device according to the preamble of claim 1
  • the housing comprises a portion having a gripping handle and a portion housing a reduction, these two portions being connected by a rotary junction.
  • the screwdrivers are currently used, mainly in industry, to allow operators to proceed to the screwing of connecting elements of the parts of an assembly.
  • the screwdrivers conventionally comprise a housing having a handle and housing motor means whose output is connected to the input of a reduction, the output of this reduction being itself connected to a terminal rotary member intended to cooperate with a screw element.
  • the screwdrivers therefore often include a reaction bar secured to the housing. This reaction bar is intended to be placed in abutment against a fixed element to absorb, during a screwing operation, the reaction torque of the tool.
  • reaction bar may be ripe from the fulcrum against which it is blocked. In such a situation, if the operator continues to pull the trigger, this can cause injury.
  • screwdrivers comprising on the one hand a gripper housing having a handle and housing the drive means, and on the other hand a reduction housing housing a reduction.
  • the reduction casing is secured to the gripping casing by a rotary connection.
  • the gripper and reduction casings are rotatable relative to each other.
  • such an assembly allows the operator to adjust the angular position of the handle relative to the reduction housing to find the working position that seems most comfortable for him to perform the screwing operation he has the charge.
  • Screwdrivers of this type therefore have the advantages of offering a high level of safety and good ergonomics. They can still be improved.
  • reaction transmitted by the handle to the hand of the operator during a screwing operation without reaction bar is relatively small, it is not completely negligible.
  • reaction torque generated by the internal transmission of the screwdriver at the rotational junction between the gripper housing and the reduction housing.
  • This torque is in fact the torque of the motor means, that is to say the product of the engine torque by one or more reduction stages. Its value is generally around 10 Nm. Such levels of reaction torque are sufficient to constitute a source of fatigue for the operator.
  • the invention particularly aims to overcome these disadvantages of the prior art.
  • an object of the invention is to improve, in at least one embodiment, the safety of use and the ergonomics of the screwdrivers with rotating gripping casing.
  • an object of the invention is to provide, in at least one embodiment, such a screwdriver which generates no reaction in the hand of the operator during a screwing operation, or at least which generates a reaction whose value is low enough not to cause him injury and / or fatigue.
  • Another object of the invention is to implement such a screwdriver which allows, in at least one embodiment, to control the tightening torque to which a fastener is screwed by means of the screwdriver.
  • the invention also aims to provide such a screwdriver which is, in at least one embodiment, simple design and / or reliable and / or cheap.
  • a screw device comprising a gripper housing and a reduction casing, said gripping casing comprising a handle and housing motor means, said reduction casing housing a gear reduction whose input cooperates with the output of said motor means, said reduction comprising a single output cooperating with a rotary end member intended to cooperate with a screw element, said reduction casing; being connected to said gripping case by rotary connection means.
  • said rotary connection means are configured in such a way that a negligible reaction force is transmitted during a screwing operation to said gripping case.
  • the invention is based on a completely original approach which consists in linking the reduction casing and the gripping casing of a screwdriver by rotary connection means designed in such a way that only a negligible reaction force is transmitted during from a screwing operation to the gripping case.
  • negligible reaction effort is meant a force which is sufficiently small not to risk causing injury or discomfort to the operator.
  • the value of such a torque is generally less than 5 Nm
  • the implementation of the technique according to the invention thus makes it possible to improve the safety of use of a screwdriver and to improve its ergonomic qualities.
  • Said rotary linking means comprise means for transmitting to said gripping casing a reaction torque of substantially identical intensity and direction opposite to the reaction torque transmitted by said reduction to said motor means.
  • reaction torques When these reaction torques have identical values, no reaction force is transmitted by the handle to the hand of the operator.
  • these couples have different values, a reaction force is transmitted by the handle to the operator.
  • the transmission means will therefore be determined in such a way that the reaction forces transmitted to the operator are at most negligible, that is to say that they are sufficiently weak not to cause him injury or simply discomfort. In practice, the value of one of these reaction couples will be equal to that of the other at approximately 20%.
  • said reduction comprises a first epicyclic gear train having a first solar solid with said motor means, first satellites mounted on a first planet carrier, and a ring mounted free to rotate in said reduction case, said means for transmission comprising a second epicyclic gear train having a second sun rotatable with respect to said first sun and fixed to said gripping casing, second satellites mounted on a second planet carrier fixed to said reduction casing, and said ring gear.
  • This implementation makes it possible to ensure efficiently and simply that only a zero or negligible reaction force is transmitted to the handle during a screwing operation.
  • the numbers of teeth respectively of the solar, satellites and the ring gear of the first epicyclic gear are preferably identical to those of the solar, satellites and the ring of the second epicyclic gear
  • first and second trains have therefore identical reduction ratios.
  • a device preferably comprises means for measuring information representative of the tightening torque of said element to be screwed, said measuring means comprising at least one torque sensor integrated in said transmission means.
  • Said torque sensor is preferably mounted on said second solar.
  • the first satellite gate is directly linked to the rotary terminal member.
  • the transmission and measurement means are thus very close to the output of the transmission. The accuracy of the measurement of the tightening torque is then improved.
  • Said sensor advantageously incorporates strain gages.
  • strain gauges are connected to an electronic card housed in the gripping case. This is made possible by the fact that the solar supporting the sensor is fixed on the gripper housing which allows the passage of power supply son of strain gauges and recovery of the signal.
  • a device according to the invention comprises a gearbox interposed between said motor means and said reduction.
  • a device according to the invention may comprise means for shifting by reversing the direction of rotation of said motor means.
  • the axis of said gearbox and said reduction extends parallel and offset from the axis of said motor means.
  • a device according to the invention may comprise a reaction bar integral with said reduction casing.
  • the general principle of the invention is based on the implementation of rotary connection means, between the reduction casing and the gripping casing of a screwdriver, designed in such a way that no reaction force is transmitted during a screwing operation to the gripping case.
  • the invention thus provides an ergonomic screwdriver whose safety of use is increased.
  • such a screwdriver comprises a gripping casing 10 and a reduction casing 11.
  • the output 121 of the motor 12 cooperates with the input 131 of the gearbox 13 via an intermediate transmission comprising an epicyclic gear whose solar is integral with the output shaft of the motor 12, the crown is fixed, the planet carrier comprises an external toothing which meshes with gears which mesh themselves with the input 131 of the gearbox.
  • the gearbox with change of speed by reversing the direction of rotation of the engine is known in itself and is not described here in detail.
  • Such a gearbox is for example described in the patent application FR-A1-2 913 361 .
  • the output of the gearbox is linked to a motor shaft 15 capable of being rotated in one direction by at least two speeds by the engine and the gearbox.
  • the inverting means 14 which are known to those skilled in the art and are therefore not described in detail, can allow an operator to reverse the direction of rotation of the motor shaft 15 to perform an operation of unscrewing.
  • the reduction housing 11 houses gear reduction 16. This reduction comprises a single output provided to cooperate with a terminal rotary member 17 intended to cooperate with a screw element.
  • the reduction casing 11 is connected to the gripping casing 10 by rotary connection means.
  • a sliding bearing is provided between the surface 111 of the reduction casing 11, the surface 102 of the gripping casing 10 and the plate 21 whose implementation is described later.
  • the reduction casing 11 and the gripping casing 10 can thus rotate with respect to one another about the axis of rotation of the end member 17.
  • these rotary connection means are configured in such a way that no reaction force is transmitted during a screwing operation to the gripping casing 10.
  • the screwdriver may not include any gearbox or gear change means by reversing the direction of rotation of the motor.
  • the motor output can be directly connected to the input of the reduction.
  • the reduction comprises a first epicyclic gear train.
  • This first epicyclic gear includes a first solar 161 which is rotatably connected to the drive shaft 15. It also comprises first satellites 162 mounted for rotation on axes 163 integral with a first planet carrier 164, and a ring 160 The ring gear 160 is rotatably mounted inside the reduction casing 11.
  • this reduction comprises another epicyclic gear train. It comprises a solar 165 which is secured to the first planet carrier 164, satellites 166 mounted rotatably on axes 167 integral with a planet carrier 168, and a ring 169, fixed relative to the reduction case 11 , and engraining with satellites 166.
  • the terminal member 17 is integral with the planet carrier 168.
  • the rotary connection means comprise transmission means 20 to the gripping casing 10 of a reaction torque of identical intensity and direction opposite to the reaction torque transmitted by the reduction 16 to the motor means.
  • This second epicyclic gear includes a second solar 200.
  • This solar 200 is rotatably mounted around a shaft formed in the extension of the first solar 161 and integral therewith. It is extended by a shaft portion 211 at the end of which is placed flange 210.
  • This flange 210 is fixed to the gripping casing 10 via a plate 21.
  • This second epicyclic gear comprises second satellites 201 rotatably mounted on wheels. 202 axes secured to a second planet carrier 203.
  • This second planet carrier 203 is fixed to the reduction housing 11. The second satellites mesh with the ring gear 160.
  • the number of teeth of the solar 161 is identical to that of the solar 200.
  • the number of teeth of the satellites 162 is identical to that of the satellites 201.
  • the portion of the crown 160 in engagement with the satellites 162 has a number of teeth identical to the portion of the crown 160 in engagement with the satellites 201.
  • the first and second epicyclic gear trains have identical gear ratios.
  • the second planet carrier 203 is fixed with respect to the reduction casing 11.
  • the axes 202 are therefore fixed with respect to the reduction casing 11.
  • the second satellites 201 can rotate about the axes 202.
  • the ring gear 160 is thus stopped in rotation in the reduction casing 11 although it is mounted free to rotate, that is to say floating.
  • the ring 200 being floating, the gripping casing 10 and the reduction casing 11 can rotate relative to each other.
  • the screwdriver comprises a reaction bar (not shown) which is integral with the reduction casing 11.
  • the screwdriver comprises means for measuring information representative of the tightening torque to which a screw-in element is screwed by means of the screwdriver.
  • These measuring means comprise a torque sensor which comprises strain gauges integral with the second solar unit 200.
  • the screwdriver is connected to control means such as a control box (not shown).
  • the operator grasps the screwdriver and makes the end rotary member 17 cooperate with the element to be screwed on. It then blocks the reaction bar against a fixed element for example integral with the assembly to be made. It finally actuates the trigger 101 to command the start of the engine 12.
  • the drive shaft 15 is then rotated by the engine and the gearbox clockwise from the rear of the engine, according to a first fast speed called speed of foresight.
  • the first solar 161 is rotated clockwise by the drive shaft 15.
  • the first satellites 162 are driven counterclockwise by the first solar 161.
  • the first planet carrier 164 rotates clockwise.
  • the solar 165 then rotates clockwise and drives the satellites 166 counterclockwise while the planet carrier 168 turns clockwise.
  • the end member 17 then rotates at a fast speed in the clockwise direction so that the element to be screwed undergoes a precleaning phase.
  • the driver then delivers a given biasing torque.
  • the ring 160 exerts a reaction torque on the second satellites 201 tending to drive them counterclockwise.
  • the second satellite carrier 203 is stationary, the second satellites 201 exert a reaction torque tending to cause the second sun 200 to rotate in a clockwise direction.
  • the second sun 200 therefore transmits a first reaction torque CR 1 in the clockwise direction via the flange 210 to the gripping housing 10 which it is secured.
  • the reduction 16 transmits a second reaction torque CR 2 counterclockwise to the drive shaft 15 via the first solar 161.
  • the system formed by the gripping casing 10, the handle and the mechanical elements in question undergoes two pairs of reaction of opposite directions and of equal intensities.
  • the sum of couples transmitted to the gripping case is therefore zero or at least negligible.
  • the reaction torque transmitted to the hand of the operator by the handle 100 is therefore negligible.
  • a screwdriver according to the invention therefore has great comfort and great safety of use.
  • the reaction torque transmitted to the gripping case 10 by the second solar 200 is measured by the torque sensor and the control box. This reaction torque is proportional to the tightening torque to which is screwed the element to be screwed.
  • control box detects that the value of this first reaction torque CR 1 reaches a first predetermined threshold value corresponding generally to the moment when the element to be screwed lands against a piece of the assembly to be carried out, the control box controls the stopping of the precleaning phase and the beginning of the screwing phase.
  • the control box then actuates the means for reversing the direction of rotation of the motor.
  • the direction of rotation of the motor 12 is thus reversed.
  • the drive shaft 15 is rotated clockwise at a second, slower speed called the screwing speed.
  • the first solar 161 is rotated clockwise by the drive shaft 15.
  • the first satellites 162 are driven counterclockwise by the first solar 161.
  • the first planet carrier 164 rotates clockwise.
  • the solar 169 then rotates clockwise and drives the satellites 166 counterclockwise while the planet carrier 168 rotates clockwise.
  • the end member 17 also rotates in the clockwise direction so that the screw member undergoes a screwing phase at a slower speed until the desired torque is reached.
  • the screwdriver then delivers a tightening torque whose value is greater than that of the prying torque.
  • control unit When the control unit detects that the first reaction torque CR 1 reaches a second predetermined threshold value corresponding to the end of the screwing, it controls the stopping of the screwdriver.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Retarders (AREA)

Claims (12)

  1. Schraubvorrichtung, welche ein Greifgehäuse (10) und ein Untersetzungsgehäuse (11) umfasst, wobei das Greifgehäuse (10) einen Griff (100) umfasst und Antriebsmittel (12, 121, 13, 14, 15) aufnimmt, wobei das Untersetzungsgehäuse (11) eine Räderuntersetzung (16) aufnimmt, deren Eingang (161) mit dem Ausgang (15) der Antriebsmittel (12, 121, 13, 14, 15) zusammenwirkt, wobei die Räderuntersetzung (16) einen einzigen Ausgang (168) umfasst, der mit einem rotierenden Endorgan (17) zusammenwirkt, das dazu bestimmt ist, mit einem zu schraubenden Element zusammenzuwirken, wobei das Untersetzungsgehäuse (11) mit dem Greifgehäuse (10) durch Drehverbindungsmittel verbunden ist,
    dadurch gekennzeichnet, dass die Drehverbindungsmittel Mittel zur Übertragung eines Reaktionsmoments auf das Greifgehäuse (10) umfassen, welches im Wesentlichen dieselbe Größe und eine entgegengesetzte Richtung wie das Reaktionsmoment aufweist, das von der Räderuntersetzung (16) auf die Antriebsmittel (12, 121, 13, 14, 15) übertragen wird, derart, dass bei einem Schraubvorgang eine vernachlässigbare Reaktionskraft auf das Greifgehäuse (10) übertragen wird.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Räderuntersetzung (16) einen ersten Planetengetriebezug umfasst, der ein erstes Sonnenrad (161), das mit den Antriebsmitteln fest verbunden ist, erste Planetenräder (162), die auf einem ersten Planetenradträger (164) angebracht sind, und ein Hohlrad (160), das frei drehbar in dem Untersetzungsgehäuse (11) angebracht ist, aufweist, wobei die Mittel zur Übertragung einen zweiten Planetengetriebezug umfassen, der ein zweites Sonnenrad (200), das bezüglich des ersten Sonnenrades (161) drehbeweglich ist und an dem Greifgehäuse (10) befestigt ist, zweite Planetenräder (201), die auf einem zweiten Planetenradträger (203) angebracht sind, der an dem Untersetzungsgehäuse (11) befestigt ist, und das Hohlrad (160) aufweist.
  3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass die Zähnezahlen des Sonnenrades (161), der Planetenräder (162) bzw. des Hohlrades (160) des ersten Planetengetriebezuges mit denjenigen des Sonnenrades (200), der Planetenräder (201) bzw. des Hohlrades (160) des zweiten Planetengetriebezuges identisch sind.
  4. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass der Eingang des ersten Planetengetriebezuges das Sonnenrad (161) ist und dass sein Ausgang der Planetenradträger (164) ist, dadurch, dass der Eingang des zweiten Planetengetriebezuges das Sonnenrad (200) ist und sein Ausgang der Planetenradträger (203) ist, und dadurch, dass der erste und der zweite Planetengetriebezug identische Untersetzungsverhältnisse aufweisen.
  5. Vorrichtung nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, dass der erste Planetenradträger (164) direkt mit dem rotierenden Endorgan (17) verbunden ist.
  6. Vorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass sie Mittel zum Messen einer Information umfasst, die für das Anzugsdrehmoment des zu schraubenden Elements repräsentativ ist, wobei die Mittel zum Messen wenigstens einen Drehmomentsensor umfassen, der in die Mittel zur Übertragung integriert ist.
  7. Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, dass der Drehmomentsensor an dem zweiten Sonnenrad (200) angebracht ist.
  8. Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, dass in den Sensor Dehnungsmessstreifen integriert sind.
  9. Vorrichtung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass sie ein Getriebegehäuse (13) umfasst, das zwischen den Antriebsmitteln (12) und der Räderuntersetzung (16) angeordnet ist.
  10. Vorrichtung nach Anspruch 9, dadurch gekennzeichnet, dass sie Mittel zur Geschwindigkeitsänderung durch Umkehr der Drehrichtung der Antriebsmittel (12) umfasst.
  11. Vorrichtung nach Anspruch 9 oder 10, dadurch gekennzeichnet, dass sich die Achse des Getriebegehäuses (13) und der Räderuntersetzung (16) parallel zur Achse der Antriebsmittel (12) und versetzt bezüglich dieser erstreckt.
  12. Vorrichtung nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, dass sie eine Drehmomentstütze umfasst, die mit dem Untersetzungsgehäuse (11) fest verbunden ist.
EP13187303.6A 2012-10-05 2013-10-04 Schraubvorrichtung ohne Reaktion im Griff Active EP2716414B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1259458A FR2996483B1 (fr) 2012-10-05 2012-10-05 Dispositif de vissage sans reaction dans la poignee

Publications (2)

Publication Number Publication Date
EP2716414A1 EP2716414A1 (de) 2014-04-09
EP2716414B1 true EP2716414B1 (de) 2015-12-23

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP13187303.6A Active EP2716414B1 (de) 2012-10-05 2013-10-04 Schraubvorrichtung ohne Reaktion im Griff

Country Status (3)

Country Link
US (1) US9555534B2 (de)
EP (1) EP2716414B1 (de)
FR (1) FR2996483B1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE539469C2 (en) * 2015-01-21 2017-09-26 Atlas Copco Ind Technique Ab Method for determining the magnitude of the output torque and a power wrench
FR3055235B1 (fr) * 2016-08-23 2019-06-28 Etablissements Georges Renault Dispositif de vissage a mesure de couple de sortie optimisee, et procede de determination du couple de sortie correspondant

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1116575A (en) * 1965-08-11 1968-06-06 Pametrada Improvements in and relating to change speed gears
US4448098A (en) * 1982-03-10 1984-05-15 Katsuyuki Totsu Electrically driven screw-driver
US5238461A (en) * 1991-02-11 1993-08-24 Gotman Alexander S Reactionlless differential rotary driver having optimized output torques
US5540629A (en) * 1991-02-11 1996-07-30 Gene W. Arant Mechanism for conteracting reaction torque in a powered, reversible, hand-held rotary driver
US6435285B1 (en) * 2002-01-04 2002-08-20 Feng-Chun Tsai Structure for enhancing torque output of electric drill
US6796921B1 (en) * 2003-05-30 2004-09-28 One World Technologies Limited Three speed rotary power tool
CA2471616C (en) * 2004-06-21 2009-12-22 Dan Provost Torque tool
SE534183C2 (sv) * 2006-04-28 2011-05-24 Unex Corp Motordriven vridmomentsförstärkare
JP5201842B2 (ja) * 2007-01-29 2013-06-05 勝行 戸津 電動ドライバーのねじ締めトルク検出装置
FR2913361B1 (fr) * 2007-03-08 2009-09-04 Georges Renault Soc Par Action Dispositif de transmission pour outil de vissage et outil de vissage portatif correspondant
US7794355B2 (en) * 2007-05-15 2010-09-14 Snap-On Incorporated Planetary gear set centering ring
SE531646C2 (sv) * 2007-10-17 2009-06-16 Atlas Copco Tools Ab Skruvdragare med organ för övervakning av en reaktionsarm
US8251156B2 (en) * 2008-10-30 2012-08-28 Black & Decker Inc. Compliant shifting mechanism for right angle drill
WO2011056344A1 (en) * 2009-11-03 2011-05-12 The Timken Company Modular assembly for an integrated flex pin drive with generator
DE102010024920A1 (de) * 2010-06-18 2011-12-22 C. & E. Fein Gmbh Schrauber

Also Published As

Publication number Publication date
EP2716414A1 (de) 2014-04-09
FR2996483B1 (fr) 2015-04-17
US20140096989A1 (en) 2014-04-10
FR2996483A1 (fr) 2014-04-11
US9555534B2 (en) 2017-01-31

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