EP2030738A2 - Vibrating hand machine tool with a locking switch for the motor switch - Google Patents

Vibrating hand machine tool with a locking switch for the motor switch Download PDF

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Publication number
EP2030738A2
EP2030738A2 EP08104836A EP08104836A EP2030738A2 EP 2030738 A2 EP2030738 A2 EP 2030738A2 EP 08104836 A EP08104836 A EP 08104836A EP 08104836 A EP08104836 A EP 08104836A EP 2030738 A2 EP2030738 A2 EP 2030738A2
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EP
European Patent Office
Prior art keywords
switch
operating mode
stop
locking
linkage
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
EP08104836A
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German (de)
French (fr)
Other versions
EP2030738B1 (en
EP2030738A3 (en
Inventor
Franz Mössnang
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Hilti AG
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Hilti AG
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Filing date
Publication date
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Publication of EP2030738A2 publication Critical patent/EP2030738A2/en
Publication of EP2030738A3 publication Critical patent/EP2030738A3/en
Application granted granted Critical
Publication of EP2030738B1 publication Critical patent/EP2030738B1/en
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Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D16/00—Portable percussive machines with superimposed rotation, the rotational movement of the output shaft of a motor being modified to generate axial impacts on the tool bit
    • B25D16/006—Mode changers; Mechanisms connected thereto
    • 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
    • B25D2250/255—Switches
    • 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
    • B25D2250/255—Switches
    • B25D2250/261—Means for locking an operative switch on

Definitions

  • the invention refers to an at least partially beating and rotating hand tool such as a combination hammer with a locking switch of the engine switch for chisel operation.
  • the guide handle with respect to the percussion unit is vibration-decoupled.
  • the motor switch of the motor control is locked in the on state with a locking switch, but not for the rotating other operating modes.
  • percussion unit is also understood to mean a combined motor / percussion unit or a combined motor / gear unit.
  • the locking switch for the motor switch is formed as a in (for appropriate handling) lower handle bar of the guide handle multi-piece hinge-mounted locking clip, which is connected to a nadoversetzbaren mode selection switch the percussion unit.
  • a hand tool vibrating along the striking axis has a motor switch in a guide handle, on whose (with appropriate handling) upper handle a locking switch is arranged, which locks the motor switch in the fully on state.
  • the object is to realize a technologically simple control of the locking switch for the motor switch in a vibration-decoupled guide handle.
  • Another aspect is the space-saving design of the shift linkage.
  • a hand-held power tool that at least partially beats and rotates along a striking axis has a guide handle with a motor control switch for vibration control coupled to a locking switch which can be displaced in a switching range, wherein an operating mode switch is arranged in the striking mechanism assembly, the offset of a shift linkage, which has a stop which protrudes in a rotating operating mode in the shift range, wherein the shift linkage is angled formed with two legs, wherein a rigid leg which forms the stop and is pivotally mounted in a pivot point on the striking mechanism assembly, and the other connected to the Radiomodi inchesschalter, axially extending legs is formed slippery.
  • the lock By controlling the locking function on a loose, not connected to the locking switch stop, the lock is fatigue-free and technologically easy even with a vibration-decoupled to the striking mechanism assembly guide handle.
  • the shift linkage is pivotally mounted in a rotational pivot point, only this leg must be formed sufficiently rigid with the stop, but the other may (should) deform, whereby space and material is saved.
  • a displacement transmission of the stop with respect to the eccentric stroke is possible via the lever joint.
  • the limp formed leg forms near the bend of a film hinge, whereby the caused with the axial displacement of the lead-bladed leg angle change is absorbed elastically and thus free of damage.
  • the limp formed leg forms close to the connection with the Radiomodi Vietnamese switch from another film hinge, which is also the damage caused by the pivoting of the rigid leg angle change of the limp formed leg elastic and thus received without damage.
  • Fig. 1 has a along a striking axis A beating and rotating hand tool 1 in the form of a combination hammer with respect to a percussion unit 2 with a rotatable in the rotating and beating rotary drilling mode and the only beating chisel mode Hormodi inchesschalter 3 ( Fig. 2 ) vibration-decoupled guide handle 4.
  • a motor switch 5 is arranged for motor control, which is lockable with a arranged on the top of the upper handle bar 6 locking switch 7 in the form of an axially longitudinally displaceable slide in the ON state.
  • Fig. 2 To Fig. 2 is a shift linkage 9 axial hammering side offset with the switched in Meissel GmbHsmode Gasmodi inchesschalfier 3 via an eccentric disk 8, whereby a stop 10 does not protrude into the switching range X of the locking switch 7, so that this for locking the motor switch 5 Fig. 1 ) is sufficiently far impact side offset.
  • the switching linkage 9 is offset axially on the handle side with the operating mode selector switch 3 (shown in dashed lines), whereby the stop 10 projects into the switching region X of the locking switch 7, whereby it does not lock the motor switch 5 (FIG. Fig. 1 ) is sufficiently far impact side offset.
  • the shift linkage 9 is angled with two legs 16a, 16b formed, with a rigid (recognizable by the transverse reinforcement) leg 16a, which forms the stop 10 and eccentrically in a rotary pivot point 17 on the percussion unit 2 ( Fig.1 ) is pivotally mounted.
  • the other connected to the mode selector switch 3, axially extending leg 16b is formed slippery (recognizable by the transverse deformation) and has near the bend 18 and close to the connection with the mode selector switch 3 depending on a film hinge 19.
  • the shift linkage 9 is formed as a one-piece injection molded plastic component.

Abstract

The tool has a guide handle including a motor switch for locking a locking switch (7). An operating mode selector switch (3) is arranged in a vibrating striking mechanism unit, and displaces a shift linkage (9) having a stop (10). The stop extends into switching area (X) in a rotary operating mode. The linkage is angularly formed with a rigid arm (16a) that forms the stop, and is pivotably mounted in a rotary and pivotal point (17) on the striking mechanism unit. The linkage is angularly formed with a flexible and axially extending arm (16b) that is connected with the switch (3).

Description

Die Erfindung bezeichnet eine zumindest teilweise schlagende und drehende Handwerkzeugmaschine wie einen Kombihammer mit einem Arretierschalter des Motorschalters für den Meisselbetrieb.The invention refers to an at least partially beating and rotating hand tool such as a combination hammer with a locking switch of the engine switch for chisel operation.

Bei derartigen, längs der Schlagachse schlagenden und drehenden, Handwerkzeugmaschinen ist der Führungshandgriff bezüglich der Schlagwerksbaugruppe vibrationsentkoppelt. Für den rein schlagenden Meisselbetrieb wird üblicherweise der Motorschalter der Motorsteuerung im Einschaltzustand mit einem Arretierschalter arretiert, nicht jedoch für die auch drehenden weiteren Betriebsmodi. Unter dem Begriff Schlagwerksbaugruppe wird im Weiteren auch eine kombinierte Motor/Schlagwerksbaugruppe oder einer kombinierte Motor/Getriebebaugruppe verstanden.In such, along the striking axis beating and rotating, hand tool, the guide handle with respect to the percussion unit is vibration-decoupled. For the pure beating chisel operation usually the motor switch of the motor control is locked in the on state with a locking switch, but not for the rotating other operating modes. The term percussion unit is also understood to mean a combined motor / percussion unit or a combined motor / gear unit.

Nach der DE10034768 ist der Führungshandgriff bezüglich der Schlagwerksbaugruppe vibrationsentkoppelt ausgebildet. Der Arretierschalter für den Motorschalter ist als eine im (bei zweckentsprechender Handhabung) unteren Griffbügel des Führungshandgriffs mehrteilig gelenkgelagerte Rastklammer ausgebildet, die mit einem drehversetzbaren Betriebsmodiwahlschalter der Schlagwerksbaugruppe verbunden ist. Eine derartige Lösung ist technologisch aufwendig und beansprucht Freiraum im unteren Griffbügel.After DE10034768 the guide handle is vibration-decoupled with respect to the percussion unit. The locking switch for the motor switch is formed as a in (for appropriate handling) lower handle bar of the guide handle multi-piece hinge-mounted locking clip, which is connected to a drehversetzbaren mode selection switch the percussion unit. Such a solution is technologically complex and takes up space in the lower handle.

Nach der DE19937767 weist eine längs der Schlagachse vibrierende Handwerkzeugmaschine einen Motorschalter in einem Führungshandgriff auf, an dessen (bei zweckentsprechender Handhabung) oberen Griffbügel ein Arretierschalter angeordnet ist, welcher den Motorschalter im voll eingeschalteten Zustand arretiert. Durch ein den Arretierschalter bezüglich seiner Arretierung steuerndes, versetzbares steifes Schaltgestänge, welches mit einem drehversetzbaren Betriebsmodiwahlschalter der Schlagwerksbaugruppe über eine Exzenterscheibe verbunden ist, wird sichergestellt, dass die Arretierung ausschliesslich im Meisselbetriebsmode, nicht jedoch in den drehenden weiteren Betriebsmodi ermöglicht wird.After DE19937767 For example, a hand tool vibrating along the striking axis has a motor switch in a guide handle, on whose (with appropriate handling) upper handle a locking switch is arranged, which locks the motor switch in the fully on state. By means of the locking switch with respect to its locking controlling, displaceable rigid switching linkage, which is connected to a drehversetzbaren Betriebsmodiwahlschalter the percussion mechanism via an eccentric, it is ensured that the locking is made possible only in chisel mode, but not in the rotating other operating modes.

Die Aufgabe besteht in einer Realisierung einer technologisch einfachen Steuerung des Arretierschalters für den Motorschalter in einem vibrationsentkoppelten Führungshandgriff. Ein weiterer Aspekt besteht in der raumsparenden Ausbildung des Schaltgestänges.The object is to realize a technologically simple control of the locking switch for the motor switch in a vibration-decoupled guide handle. Another aspect is the space-saving design of the shift linkage.

Die Aufgabe wird im Wesentlichen durch die Merkmale des Anspruchs gelöst. Vorteilhafte Weiterbildungen ergeben sich aus den Unteransprüchen.The object is essentially achieved by the features of the claim. Advantageous developments emerge from the subclaims.

So weist eine längs einer Schlagachse zumindest teilweise schlagende und drehende Handwerkzeugmaschine einen bezüglich einer vibrierenden Schlagwerksbaugruppe vibrationsentkoppelten Führungshandgriff mit einem Motorschalter zur Motorsteuerung auf, dem zur Arretierung ein Arretierschalter zugeordnet ist, der in einem Schaltbereich versetzbar ist, wobei in der Schlagwerksbaugruppe ein Betriebsmodiwahlschalter angeordnet ist, der ein Schaltgestänge versetzt, das einen Anschlag aufweist, der in einem drehenden Betriebsmode in den Schaltbereich hineinragt, wobei das Schaltgestänge abgewinkelt mit zwei Schenkeln ausgebildet ist, wobei ein biegesteifer Schenkel, der den Anschlag ausbildet sowie in einem Drehschwenkpunkt an der Schlagwerksbaugruppe verschwenkbar gelagert ist, und der andere mit dem Betriebsmodiwahlschalter verbundene, sich axial erstreckende Schenkel biegeschlaff ausgebildet ist.Thus, a hand-held power tool that at least partially beats and rotates along a striking axis has a guide handle with a motor control switch for vibration control coupled to a locking switch which can be displaced in a switching range, wherein an operating mode switch is arranged in the striking mechanism assembly, the offset of a shift linkage, which has a stop which protrudes in a rotating operating mode in the shift range, wherein the shift linkage is angled formed with two legs, wherein a rigid leg which forms the stop and is pivotally mounted in a pivot point on the striking mechanism assembly, and the other connected to the Betriebsmodiwahlschalter, axially extending legs is formed slippery.

Durch die Steuerung der Arretierfunktion über einen losen, nicht mit dem Arretierschalter verbundenen Anschlag, ist die Arretierung auch bei einem zur Schlagwerksbaugruppe vibrationsentkoppelten Führungshandgriff ermüdungsfrei sowie technologisch einfach realisiert. Indem das Schaltgestänge in einem Drehschwenkpunkt verschwenkbar gelagert ist, muss nur dieser Schenkel mit dem Anschlag hinreichend steif ausgebildet werden, der andere aber darf (soll) sich deformieren, wodurch Raum und Material gespart wird. Zudem ist über das Hebelgelenk eine Wegübersetzung des Anschlags bezüglich des Excenterhubs möglich.By controlling the locking function on a loose, not connected to the locking switch stop, the lock is fatigue-free and technologically easy even with a vibration-decoupled to the striking mechanism assembly guide handle. By the shift linkage is pivotally mounted in a rotational pivot point, only this leg must be formed sufficiently rigid with the stop, but the other may (should) deform, whereby space and material is saved. In addition, a displacement transmission of the stop with respect to the eccentric stroke is possible via the lever joint.

Vorteilhaft bildet der biegeschlaff ausgebildete Schenkel nahe der Abwinklung ein Filmscharnier aus, wodurch die mit der axialen Versetzung des blegeschlaffen Schenkels bewirkte Winkeländerung elastisch und somit schädigungsfrei aufgenommen wird.Advantageously, the limp formed leg forms near the bend of a film hinge, whereby the caused with the axial displacement of the lead-bladed leg angle change is absorbed elastically and thus free of damage.

Vorteilhaft bildet der biegeschlaff ausgebildete Schenkel nahe der Verbindung mit dem Betriebsmodiwahlschalter ein weiteres Filmscharnier aus, wodurch auch die mit der Verschwenkung des biegesteifen Schenkels bewirkte Winkeländerung des biegeschlaff ausgebildeten Schenkels elastisch und somit schädigungsfrei aufgenommen wird.Advantageously, the limp formed leg forms close to the connection with the Betriebsmodiwahl switch from another film hinge, which is also the damage caused by the pivoting of the rigid leg angle change of the limp formed leg elastic and thus received without damage.

Die Erfindung wird bezüglich eines vorteilhaften Ausführungsbeispiels näher erläutert mit:

  • Fig. 1 als Handwerkzeugmaschine
  • Fig. 2 als Einzelheit im Meisselbetriebsmode (gestrichelt im Drehbohrmode)
  • Fig. 3 als Schaltgestänge
The invention will be explained in more detail with respect to an advantageous embodiment with:
  • Fig. 1 as a hand tool machine
  • Fig. 2 as a detail in chisel mode (dashed in rotary drilling mode)
  • Fig. 3 as a shift linkage

Nach Fig. 1 weist eine längs einer Schlagachse A schlagende und drehende Handwerkzeugmaschine 1 in Form eines Kombihammers einen bezüglich einer Schlagwerksbaugruppe 2 mit einem in den drehenden und schlagenden Drehbohrmode und den nur schlagenden Meisselmode drehversetzbaren Betriebsmodiwahlschalter 3 (Fig. 2) vibrationsentkoppelten Führungshandgriff 4 auf. Im Führungshandgriff 4 ist ein Motorschalter 5 zur Motorsteuerung angeordnet, der mit einem an der Oberseite des oberen Griffbügel 6 angeordneten Arretierschalter 7 in Form eines axial längs versetzbaren Schiebers im Einschaltzustand arretierbar ist.To Fig. 1 has a along a striking axis A beating and rotating hand tool 1 in the form of a combination hammer with respect to a percussion unit 2 with a rotatable in the rotating and beating rotary drilling mode and the only beating chisel mode Betriebsmodiwahlschalter 3 ( Fig. 2 ) vibration-decoupled guide handle 4. In the guide handle 4, a motor switch 5 is arranged for motor control, which is lockable with a arranged on the top of the upper handle bar 6 locking switch 7 in the form of an axially longitudinally displaceable slide in the ON state.

Nach Fig. 2 ist mit dem im Meisselbetriebsmode geschalteten Betriebsmodiwahlschalfier 3 über eine Exzenterscheibe 8 ein Schaltgestänge 9 axial schlagwerksseitig versetzt, wodurch ein Anschlag 10 nicht in den Schaltbereich X des Arretierschalters 7 hineinragt, so dass dieser zur Arretierung des Motorschalters 5 (Fig. 1) hinreichend weit schlagwerksseitig versetzbar ist. Hingegen ist mit dem im (gestrichelt dargestelten) Drehbohrmode geschalteten Betriebsmodiwahlschalter 3 das Schaltgestänge 9 axial griffseitig versetzt, wodurch der Anschlag 10 in den Schaltbereich X des Arretierschalters 7 hineinragt, wodurch dieser nicht zur Arretierung des Motorschalters 5 (Fig. 1) hinreichend weit schlagwerksseitig versetzbar ist. Dazu ist das Schaltgestänge 9 abgewinkelt mit zwei Schenkeln 16a, 16b ausgebildet, wobei ein biegesteifer (erkennbar an der Querversteifung) Schenkel 16a, der den Anschlag 10 ausbildet sowie aussermittig in einem Drehschwenkpunkt 17 an der Schlagwerksbaugruppe 2 (Fig.1) verschwenkbar gelagert ist. Der andere mit dem Betriebsmodiwahlschalter 3 verbundene, sich axial erstreckende Schenkel 16b ist biegeschlaff ausgebildet (erkennbar an der Querdeformation) und weist nahe der Abwinklung 18 sowie nahe der Verbindung mit dem Betriebsmodiwahlschalter 3 je ein Filmscharnier 19 auf.To Fig. 2 is a shift linkage 9 axial hammering side offset with the switched in Meisselbetriebsmode Betriebsmodiwahlschalfier 3 via an eccentric disk 8, whereby a stop 10 does not protrude into the switching range X of the locking switch 7, so that this for locking the motor switch 5 Fig. 1 ) is sufficiently far impact side offset. On the other hand, the switching linkage 9 is offset axially on the handle side with the operating mode selector switch 3 (shown in dashed lines), whereby the stop 10 projects into the switching region X of the locking switch 7, whereby it does not lock the motor switch 5 (FIG. Fig. 1 ) is sufficiently far impact side offset. For this purpose, the shift linkage 9 is angled with two legs 16a, 16b formed, with a rigid (recognizable by the transverse reinforcement) leg 16a, which forms the stop 10 and eccentrically in a rotary pivot point 17 on the percussion unit 2 ( Fig.1 ) is pivotally mounted. The other connected to the mode selector switch 3, axially extending leg 16b is formed slippery (recognizable by the transverse deformation) and has near the bend 18 and close to the connection with the mode selector switch 3 depending on a film hinge 19.

Nach Fig. 3 ist das Schaltgestänge 9 als ein einstückiges Spritzgussbauteil aus Kunststoff ausgebildet.To Fig. 3 the shift linkage 9 is formed as a one-piece injection molded plastic component.

Claims (3)

Eine längs einer Schlagachse (A) zumindest teilweise schlagende und drehende Handwerkzeugmaschine mit einem bezüglich einer vibrierenden Schlagwerksbaugruppe (2) vibrationsentkoppelten Führungshandgriff (4) mit einem Motorschalter (5) zur Motorsteuerung, dem zur Arretierung ein Arretierschalter (7) zugeordnet ist, der in einem Schaltbereich (X) versetzbar ist, wobei in der Schlagwerksbaugruppe (2) ein Betriebsmodiwahlschalter (3) angeordnet ist, der ein Schaltgestänge (9) versetzt, das einen Anschlag (10) aufweist, der in einem drehenden Betriebsmode in den Schaltbereich (X) hineinragt, dadurch gekennzeichnet, dass das Schaltgestänge (9) abgewinkelt mit zwei Schenkeln (16a, 16b) ausgebildet ist, wobei ein biegesteifer Schenkel (16a), der den Anschlag (10) ausbildet sowie in einem Drehschwenkpunkt (17) an der Schlagwerksbaugruppe (2) verschwenkbar gelagert ist, und der andere mit dem Betriebsmodiwahlschalter (3) verbundene, sich axial erstreckende Schenkel (16b) biegeschlaff ausgebildet ist.A along a striking axis (A) at least partially beating and rotating hand tool with a respect to a vibrating percussion unit (2) vibration-decoupled guide handle (4) with a motor switch (5) for motor control, which is assigned to lock a locking switch (7) in a Switching range (X) is displaceable, wherein in the striking mechanism assembly (2) an operating mode selector switch (3) is arranged, which displaces a switching linkage (9) having a stop (10) which projects in a rotating operating mode in the switching range (X) , characterized in that the shift linkage (9) angled with two legs (16a, 16b) is formed, wherein a rigid leg (16a) which forms the stop (10) and in a rotary pivot point (17) on the striking mechanism assembly (2) is mounted pivotably, and the other with the operating mode selector switch (3) connected, axially extending legs (16b) plumped out is formed. Handwerkzeugmaschine nach Anspruch 1, dadurch gekennzeichnet, dass der biegeschlaff ausgebildete Schenkel (16b) nahe der Abwinklung (18) ein Filmscharnier (19) ausbildet.Powered hand tool according to claim 1, characterized in that the limp formed leg (16b) near the bend (18) forms a film hinge (19). Handwerkzeugmaschine nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der biegeschlaff ausgebildete Schenkel (16b) nahe der Verbindung mit dem Betriebsmodiwahlschalter (2) ein weiteres Filmscharnier (19) ausbildet.Powered hand tool according to claim 1 or 2, characterized in that the limp formed leg (16b) close to the connection with the operating mode selector switch (2) forms a further film hinge (19).
EP08104836.5A 2007-08-29 2008-07-23 Vibrating hand machine tool with a locking switch for the motor switch Active EP2030738B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007000470A DE102007000470A1 (en) 2007-08-29 2007-08-29 Vibrating hand tool with a lock switch of the engine switch

Publications (3)

Publication Number Publication Date
EP2030738A2 true EP2030738A2 (en) 2009-03-04
EP2030738A3 EP2030738A3 (en) 2012-09-12
EP2030738B1 EP2030738B1 (en) 2013-09-04

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Application Number Title Priority Date Filing Date
EP08104836.5A Active EP2030738B1 (en) 2007-08-29 2008-07-23 Vibrating hand machine tool with a locking switch for the motor switch

Country Status (6)

Country Link
US (1) US20090056965A1 (en)
EP (1) EP2030738B1 (en)
JP (1) JP5221250B2 (en)
CN (1) CN101376243B (en)
DE (1) DE102007000470A1 (en)
ES (1) ES2427362T3 (en)

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CN108705490B (en) * 2018-07-31 2023-12-29 浙江信普工贸有限公司 Hammer gear self-locking device of hammer and pick electric tool
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Also Published As

Publication number Publication date
EP2030738B1 (en) 2013-09-04
CN101376243A (en) 2009-03-04
DE102007000470A1 (en) 2009-03-05
JP5221250B2 (en) 2013-06-26
EP2030738A3 (en) 2012-09-12
ES2427362T3 (en) 2013-10-30
CN101376243B (en) 2013-12-11
US20090056965A1 (en) 2009-03-05
JP2009056589A (en) 2009-03-19

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