WO2006054443A1 - ロボット関節構造、ロボットフィンガ - Google Patents
ロボット関節構造、ロボットフィンガ Download PDFInfo
- Publication number
- WO2006054443A1 WO2006054443A1 PCT/JP2005/020112 JP2005020112W WO2006054443A1 WO 2006054443 A1 WO2006054443 A1 WO 2006054443A1 JP 2005020112 W JP2005020112 W JP 2005020112W WO 2006054443 A1 WO2006054443 A1 WO 2006054443A1
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- WO
- WIPO (PCT)
- Prior art keywords
- joint
- robot
- movable body
- joint structure
- guide device
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
- B25J15/00—Gripping heads and other end effectors
- B25J15/0009—Gripping heads and other end effectors comprising multi-articulated fingers, e.g. resembling a human hand
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/20—Control lever and linkage systems
- Y10T74/20207—Multiple controlling elements for single controlled element
- Y10T74/20305—Robotic arm
- Y10T74/20329—Joint between elements
Definitions
- Robot joint structure Robot finger
- the present invention relates to a robot joint structure configured by combining a robot joint structure and a robot joint structure, and in particular, a robot joint structure that realizes a smooth joint operation and improves gripping force, and It relates to robot fingers.
- the human finger joint is the most basic hinge joint in the upper limb for grasping an object, and is the most basic hinge joint. It is said that most of the functions of the upper limbs are lost when the function of the finger joint is injured, which is a very important part for a person to grasp an object.
- the structure of the second to fifth fingers indicator, middle finger, ring finger, little finger, as shown in Fig.
- the human finger is composed of the metacarpal bone 10, the proximal phalanx 12, the middle phalanx 14, and the distal phalanx 16 in this order from the root, and the finger joint that connects them is the metacarpal joint (
- the MP joint 11 the proximal middle joint (hereinafter referred to as PIP joint) 13
- DIP joint the middle end joint
- the metacarpal 10 part is called the metacarpal 20 and, similarly, the proximal phalanx 12 part is the proximal part 22, the middle phalanx 14 part is the middle part 24, and the distal phalanx 16 part is the distal part 26 It is called.
- the MP joint 11 at the base of the finger can move independently.
- the PIP joint 13 and the DIP joint 15 ahead of the MP joint 11 operate in conjunction with each other. That is, when the finger is bent in a natural state without being conscious, the PIP joint 13 starts to bend, and the DIP joint 15 can be bent by bending the PIP joint 13. Therefore, the human fingers are bent together with the base joint 22, the middle section 24, and the end joint 26 with the MP joint 11 as a fulcrum, and with the PIP joint 13 and the DIP joint 15 as the fulcrum, the base section 22 and the middle section 24. Therefore, each terminal section 26 has an action of being bent. These movements are realized by complex muscle linkages.
- Patent Document 2 and Patent Document 3 below the first arm and the second arm are slidably connected by a link mechanism, and a ball screw is attached to a part of the link mechanism that exerts force.
- a technique in which a first arm is swung with respect to a second arm by rotating a powerful ball screw with a motor For example, in the joint structure disclosed in Patent Document 2 below, the second arm is pivotally supported with respect to the first arm, but the second arm has a screw shaft substantially parallel to the arm. The screw shaft is configured to be driven to rotate by a motor mounted on the second arm.
- a nut member is screwed onto the screw shaft, and an end portion of the link plate extending the first arm force is rotatably coupled to the nut member.
- the nut member screwed to the screw shaft moves on the screw shaft in accordance with the rotation amount and the rotation direction of the motor.
- the end portion of the link plate is coupled to the nut member. Therefore, the pushing force or the pulling-back force according to the movement of the nut member acts on the second arm from the counter plate so that the second arm swings with respect to the first arm. It becomes.
- Patent Document 1 Japanese Patent Laid-Open No. 05-092377
- Patent Document 3 Japanese Patent Laid-Open No. 2002-113681
- the joint structure according to Patent Document 1 is very simple in structure because the rotation axis of the motor is provided in parallel with the central axis of the swing motion.
- the motor and the speed reduction mechanism for driving the arm largely project outside the joint part, there is a problem that the joint part cannot be made compact.
- the joint structure according to Patent Document 1 is suitable as a joint structure for a large-scale industrial robot or the like that emphasizes robustness and maintainability, but has a small structure such as a finger structure in a mechano-carnd. It was unsuitable for application to joint structures.
- a linear guide device for an MP joint including a movable body that can move in response to the movable body, and the base member is connected to the movable body via the movable body counter mechanism.
- the movable body swings according to the pushing and pulling operation of the movable body by the middle side driving means.
- the middle hand member includes a middle hand linear guide device including a movable body connected to the movable body and movable in the same direction,
- the straight guide device for the middle hand can be configured to guide the movable body.
- the link mechanism includes a rotating bearing, a bearing case fixed on the outer ring side of the rotating bearing and installed on the moving body, and the rotating mechanism.
- a link shaft that is rotatably connected to the inner ring of the bearing and is connected to the movable body.
- the middle joint member includes a middle joint linear guide device including a movable body connected to the drive shaft and movable in the same direction,
- a powerful intermediate joint linear guide device can be configured to guide the drive shaft.
- the link mechanism includes a rotating bearing, a bearing case fixedly housed on the outer ring side of the rotating bearing and installed on the moving body, A link shaft that is rotatably connected to the inner ring of the rotary bearing and connected to the movable body.
- the middle joint side drive means is an air cylinder, and the air cylinder is capable of pushing and pulling a rod as the movable body. can do.
- a robot finger can be configured.
- FIG. 1A shows an appearance side of a robot finger according to the present embodiment, and shows a state in which the robot finger is located at a home position.
- FIG. 1B shows an external side view of the robot finger according to the present embodiment, and shows a state where the robot finger is driven and moved to a position for gripping an object.
- FIG. 2 is a side perspective view for explaining the first robot joint structure according to the present embodiment.
- FIG. 3A is a diagram exemplifying a general linear guide device that is preferably employed in the present embodiment.
- FIG. 3B is a diagram showing a configuration of a link mechanism according to the present embodiment.
- FIG. 4 is a side perspective view for explaining a second robot joint structure according to the present embodiment.
- FIG. 5 is a perspective perspective view for explaining a second robot joint structure according to the present embodiment.
- FIG. 6 is a diagram for illustrating the skeleton structure of a human hand and explaining the names of the respective parts.
- FIG. 1A and FIG. 1B are diagrams showing an external side view of the robot finger according to the present embodiment.
- FIG. 1A shows a state where the robot finger is located at the home position.
- FIG. 1B shows a state in which the robot finger is driven and moved to a position for gripping an object.
- the robot finger according to the present embodiment is roughly divided into two types of robot joint structures because it includes two driving means.
- the first robot joint structure is a portion indicated by the symbol ⁇ in FIG. This is the part corresponding to the middle hand 20, MP joint 11, and base 22 in the fingers.
- the second mouth bot joint structure is indicated by the symbol
- Each of the first and second robot joint structures is provided with different driving means, and is configured to perform the same driving operation as a human finger. In the following, each robot joint structure will be described in detail.
- FIG. 2 is a side perspective view for explaining the first robot joint structure according to the present embodiment.
- the first robot joint structure according to this embodiment includes a middle hand member 30 having a reference surface 30a and a base joint member 40 that is swingably connected to a side end portion of the middle hand member 30 via a hinge 31. And.
- the middle hand member 30 corresponds to the middle hand 20
- the hinge 31 corresponds to the MP joint 11
- the proximal member 40 corresponds to the proximal member 22.
- the reference surface 30a of the middle hand member 30 is provided with an air cylinder 32 as a middle hand side drive means capable of pushing and pulling a rod 32a as a movable body in a direction substantially parallel to the reference surface 30a. Is placed.
- the air cylinder 32 operates so that the rod 32a is pushed out by supplying air and the rod 32a is pulled back by sucking air.
- the joint joint linear guide device 44 including a movable body 42 that can move in response to the rocking motion of the base member 40 is provided on the connection-side end surface 40a of the base member 40 with the middle hand member 30. is set up.
- the MP joint linear guide device 44 is preferably a general linear guide device as shown in FIG. 3A, for example.
- the track rail 43 formed in a substantially rectangular cross section is formed by using connecting means such as a bolt on the connection side end surface 40a of the base member 40. It will be fixed.
- ball rolling grooves 43a in which the balls 45... Roll along the longitudinal direction are formed on both side surfaces of the track rail 43.
- the moving body 42 is formed in a channel shape having a concave groove 42a, and the track rail 43 is loosely fitted in the concave groove 42a.
- a load rolling groove facing the ball rolling groove 43a of the track rail 43 is formed on the inner surface of the concave groove 42a, and a large number of balls 45.
- the MP joint linear guide device 44 used in the present embodiment is installed with an angle with respect to the reference surface 30a of the middle hand member 30, but this relates to the present embodiment. This is because the home position force of the base member 40 is set so that it faces diagonally downward as shown in Fig. 1A, and is set so that the base member 40 can swing smoothly. Is.
- the installation angle of the MP joint linear guide device 44 may be arbitrarily set according to the overall configuration of the robot joint structure and the object to be grasped.
- the link mechanism 50 includes a bearing case 52 that houses the rotary bearing 51 and a link shaft 54 that is electrically connected to the rotary bearing 51.
- the link mechanism 50 will be described in more detail with reference to FIGS. 2 and 3B.
- a bearing case 52 is fixedly installed on the moving body 42, and the bearing case 52 rotates with the outer ring side fixed. Bearing 51 is housed.
- a link shaft 54 connected to the rod 32a via a connecting member 53 is provided, and this link shaft 54 is rotatably connected to the inner ring of the rotary bearing 51. Therefore, the pushing force and the pulling-back force from the rod 32a are transmitted to the rotary bearing 51 through the link shaft 54 and further to the moving body 42.
- the base joint member 40 swings according to the pushing / pulling operation of the rod 32a by the air cylinder 32. That is, when the rod 32a is pushed out by the supply of air, the moving body 42 receives the pushing force from the rod 32a, and by this pushing force, the base member 40 swings in the direction of arrow A around the hinge 31 as the rotation center. (See Figure 2). At this time, the pushing force of the rod 32a is transmitted to the moving body 42 via the link mechanism 50, and the moving body 42 can move in response to the swinging of the base member 40. Smooth swing is achieved.
- the middle hand member 30 of the first robot joint structure is provided with a middle hand linear guide device 57 including a moving body 55 that is connected to the rod 32a and is movable in the same direction.
- a middle hand linear guide device 57 including a moving body 55 that is connected to the rod 32a and is movable in the same direction.
- the straight guide device 57 for the middle hand it is preferable to adopt a general straight guide device as shown in FIG. 3A.
- the track rail 56 of the straight guide device 57 for the middle hand is fixed to the air cylinder 32 main body.
- the rod 32a and the moving body 55 are connected via the connecting member 58, and the moving body 55 can move in the same direction as the rod 32a in response to the pushing and pulling operation of the rod 32a. ing.
- the moving body 55 can take a part of the load and moment associated with the swinging motion of the base member 40 that moves around the rod 32a.
- the straight guide device 57 for the middle hand can reduce the load applied to the rod 32a and contribute to the stable operation of the first robot joint structure.
- FIG. 4 is a side perspective view for explaining the second robot joint structure according to the present embodiment
- FIG. 5 is a perspective perspective view for explaining the second robot joint structure according to the present embodiment. is there.
- the second robot joint structure according to this embodiment includes a base joint member 40, a middle joint member 60 that is swingably connected to the base joint member 40 via a hinge 61, a middle joint member 60, and a hinge 71. And a terminal joint member 70 that is connected so as to be swingable in the same direction as the swinging direction of the middle joint member 60.
- the base joint member 40 is connected to the base joint 22
- the hinge 61 is connected to the PIP joint 13
- the intermediate joint member 60 is connected to the intermediate joint 24
- the hinge 71 is connected to the DIP joint 15.
- the last part 70 corresponds to the last part 26.
- the middle joint member 60 of the second robot joint structure has an air shim serving as a middle joint side drive means capable of pushing and pulling a rod 62a as a movable body.
- a Linda 62 and a drive shaft 63 that is connected to the rod 62a and can move in the same direction in conjunction with the push-pull operation of the rod 62a are installed.
- the air cylinder 62 operates such that the rod 62a is pushed out by supplying air and the rod 62a is pulled back by sucking air.
- the drive shaft 63 is connected to a moving body 64 that can move in the same direction as the drive shaft 63.
- the movable body 64 is a member that can move on the drive rail 65 fixedly installed on the middle joint member 60, and the movable body 64 and the drive rail 65 constitute a straight guide device 66 for the middle joint. .
- the moving body 64 plays a role of guiding the movement of the drive shaft 63 and realizing a stable interlocking operation with the rod 62a.
- the base joint member 40 and the end joint member 70 installed at both ends of the middle joint member 60 so as to sandwich the middle joint member 60 are self-oscillating on the connection side end faces 40b, 70a with the middle joint member 60, respectively.
- a linear guide device 48 for PIP joints and a linear guide device 74 for DIP joints, each of which includes movable bodies 46 and 72 that can move correspondingly, are provided. Both ends of the drive shaft 63 are connected to the moving bodies 46 and 72 of the linear guide device for PIP joint 48 and the linear guide device for DIP joint 74 via link mechanisms 69 and 75, respectively. .
- the retracting force or pushing force of the drive shaft 63 is transmitted to the moving bodies 46 and 72 via the link mechanisms 69 and 75, and the moving bodies 46 and 72 are caused to swing the base joint member 40 and the end joint member 70. Can move in response to movement. Therefore, smooth swinging of the base joint member 40 and the end joint member 70 is realized.
- the pushing force or the pulling back force of the drive shaft 63 is transmitted to the moving bodies 46 and 72 through the link mechanisms 69 and 75, and the moving bodies 46 and 72 swing the base joint member 40 and the end joint member 70. It can move corresponding to. Therefore, smooth swinging of the base joint member 40 and the end joint member 70 is realized.
- link mechanisms 69 and 75 have the same structure as the link mechanism 50 described in the first robot joint structure, and thus the description thereof is omitted.
- the PIP joint linear guide device 48, the middle joint linear guide device 66, and the DIP joint linear guide device 74 are generally used as shown in FIG. 3A. It is preferable to employ a linear guide device.
- each mouth bot joint structure has the same force as the base joint member 40.
- These first and second robot joint structures can be combined at the shared base joint member 40.
- it can be configured as a robot finger as shown in FIGS. 1A and 1B.
- the device 44, 48, 57, 66, 7 4 provides the function of finger muscle fibers.
- the case where the air cylinders 32 and 62 are employed as the driving means is illustrated.
- the reason why the air cylinders 32 and 62 are employed as the driving means in this way is that a high gripping force can be obtained relatively easily.
- the robot joint structure and the robot The movement of the finger is limited to the two operations of gripping and releasing, but the drive means applicable to the present invention is not limited to the air cylinders 32 and 62.
- any drive mechanism such as an electric cylinder or a motor can be employed.
- a stepping motor or the like it is possible to obtain a robot joint structure that is excellent in posture maintenance and position control.
- the middle drive side drive means and the middle joint side drive means which are the two drive means, may be controlled in the same manner or separately.
- air cylinders 32 and 62 are used as in this embodiment, “gripping” by simultaneous air supply (state of FIG. 1B), “release” by simultaneous air suction (state of FIG. 1A), It is possible to obtain four types of operation states: ⁇ Folding only the robot finger root '' by supplying air only to the air cylinder 32 and ⁇ Folding only the fingertip part of the robot finger '' by supplying air only to the air cylinder 62. is there. Furthermore, by adopting a motor with a high stopping accuracy and a fast reaction speed as the driving means, it is possible to reproduce a movement closer to a human finger movement.
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- Engineering & Computer Science (AREA)
- Robotics (AREA)
- Mechanical Engineering (AREA)
- Manipulator (AREA)
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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JP2006544860A JP4727590B2 (ja) | 2004-11-17 | 2005-11-01 | ロボット関節構造、ロボットフィンガ |
US11/667,447 US7592768B2 (en) | 2004-11-17 | 2005-11-01 | Robot joint structure and robot finger |
DE112005002849.6T DE112005002849B4 (de) | 2004-11-17 | 2005-11-01 | Robotergelenkstruktur und Roboterfinger |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004333674 | 2004-11-17 | ||
JP2004-333674 | 2004-11-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006054443A1 true WO2006054443A1 (ja) | 2006-05-26 |
Family
ID=36406988
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/020112 WO2006054443A1 (ja) | 2004-11-17 | 2005-11-01 | ロボット関節構造、ロボットフィンガ |
Country Status (5)
Country | Link |
---|---|
US (1) | US7592768B2 (ja) |
JP (1) | JP4727590B2 (ja) |
CN (1) | CN100553901C (ja) |
DE (1) | DE112005002849B4 (ja) |
WO (1) | WO2006054443A1 (ja) |
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JP2012076193A (ja) * | 2010-10-05 | 2012-04-19 | Yaskawa Electric Corp | 多指ハンドユニットおよびロボット |
WO2014077018A1 (ja) * | 2012-11-14 | 2014-05-22 | Thk株式会社 | ロボットハンド |
JP2018518339A (ja) * | 2015-05-15 | 2018-07-12 | アールシーエム エンタープライズ, エルエルシーRcm Enterprise, Llc | Mcpピボットによる外転及び内転を行うように構成された生体力学的双方向フル義指 |
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US11292137B2 (en) | 2018-06-12 | 2022-04-05 | Shimizu Corporation | End effector and member mounting method |
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US9913737B2 (en) | 2013-03-13 | 2018-03-13 | Mark Hunter | Mechanical finger |
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JP1605291S (ja) * | 2017-07-18 | 2019-11-25 | ||
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USD852859S1 (en) | 2017-07-18 | 2019-07-02 | Mitsubishi Electric Corporation | Manipulator for robot |
USD847243S1 (en) * | 2017-07-18 | 2019-04-30 | Mitsubishi Electric Corporation | Manipulator for robot |
JP1605292S (ja) * | 2017-07-18 | 2019-11-25 | ||
CN108186283B (zh) * | 2018-01-15 | 2019-12-24 | 安阳工学院 | 一种绑缚式手指牵引装置 |
CN108210248B (zh) * | 2018-01-15 | 2019-11-29 | 安阳工学院 | 一种被动式手指康复训练器 |
JP1613980S (ja) * | 2018-03-29 | 2020-03-09 | ||
JP1613032S (ja) * | 2018-03-29 | 2020-03-02 | ||
CN108673539B (zh) * | 2018-08-01 | 2024-01-05 | 北京因时机器人科技有限公司 | 机械拇指和机械手 |
US11813747B2 (en) * | 2018-08-08 | 2023-11-14 | Sony Corporation | Link structure |
CN108714912A (zh) * | 2018-08-09 | 2018-10-30 | 常州市知豆信息科技有限公司 | 一种机器人联轴关节用复合嵌套装置 |
CN108705307A (zh) * | 2018-08-09 | 2018-10-26 | 常州市知豆信息科技有限公司 | 一种机器人联轴关节用自动生产设备 |
JP7149208B2 (ja) * | 2019-03-14 | 2022-10-06 | 川崎重工業株式会社 | ロボットの関節構造体 |
KR102142570B1 (ko) * | 2019-04-04 | 2020-08-10 | 현대자동차(주) | 착용식 근력 보조 장치의 상완 모듈 및 이를 포함한 착용식 근력 보조 장치 |
JP3239174U (ja) * | 2019-10-22 | 2022-09-22 | 深▲せん▼市中安動力科技有限公司 | マイクロ電気液圧リニアアクチュエータ及び電気液圧駆動器用なロボットハンド |
CN113119153B (zh) * | 2021-03-26 | 2022-11-29 | 深圳市优必选科技股份有限公司 | 手指结构及机器人 |
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2005
- 2005-11-01 DE DE112005002849.6T patent/DE112005002849B4/de not_active Expired - Fee Related
- 2005-11-01 CN CN200580046789.3A patent/CN100553901C/zh not_active Expired - Fee Related
- 2005-11-01 US US11/667,447 patent/US7592768B2/en active Active
- 2005-11-01 WO PCT/JP2005/020112 patent/WO2006054443A1/ja not_active Application Discontinuation
- 2005-11-01 JP JP2006544860A patent/JP4727590B2/ja active Active
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JPH08126984A (ja) * | 1994-09-09 | 1996-05-21 | Honda Motor Co Ltd | リンク装置及び人工ハンド |
JP2003117873A (ja) * | 2001-10-15 | 2003-04-23 | Japan Science & Technology Corp | 人型ロボットハンド |
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Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012076193A (ja) * | 2010-10-05 | 2012-04-19 | Yaskawa Electric Corp | 多指ハンドユニットおよびロボット |
WO2014077018A1 (ja) * | 2012-11-14 | 2014-05-22 | Thk株式会社 | ロボットハンド |
JP2014097546A (ja) * | 2012-11-14 | 2014-05-29 | Thk Co Ltd | ロボットハンド |
US9643323B2 (en) | 2012-11-14 | 2017-05-09 | Thk Co., Ltd. | Robot hand |
JP2018518339A (ja) * | 2015-05-15 | 2018-07-12 | アールシーエム エンタープライズ, エルエルシーRcm Enterprise, Llc | Mcpピボットによる外転及び内転を行うように構成された生体力学的双方向フル義指 |
US11292137B2 (en) | 2018-06-12 | 2022-04-05 | Shimizu Corporation | End effector and member mounting method |
CN109986595A (zh) * | 2019-05-22 | 2019-07-09 | 扬州哈工科创机器人研究院有限公司 | 一种高仿真机器人的柔性摆动机构 |
CN109986595B (zh) * | 2019-05-22 | 2024-02-02 | 扬州哈工科创机器人研究院有限公司 | 一种高仿真机器人的柔性摆动机构 |
CN113103278A (zh) * | 2021-03-10 | 2021-07-13 | 深圳市优必选科技股份有限公司 | 连杆结构、机器人手指及机器人 |
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CN100553901C (zh) | 2009-10-28 |
DE112005002849B4 (de) | 2015-01-22 |
DE112005002849T5 (de) | 2007-10-04 |
JPWO2006054443A1 (ja) | 2008-05-29 |
JP4727590B2 (ja) | 2011-07-20 |
CN101107101A (zh) | 2008-01-16 |
US20080127768A1 (en) | 2008-06-05 |
US7592768B2 (en) | 2009-09-22 |
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