WO2015019503A1 - 光ドロップケーブル用ロック装置 - Google Patents
光ドロップケーブル用ロック装置 Download PDFInfo
- Publication number
- WO2015019503A1 WO2015019503A1 PCT/JP2013/071717 JP2013071717W WO2015019503A1 WO 2015019503 A1 WO2015019503 A1 WO 2015019503A1 JP 2013071717 W JP2013071717 W JP 2013071717W WO 2015019503 A1 WO2015019503 A1 WO 2015019503A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- drop cable
- optical drop
- rubber sleeve
- optical
- locking device
- Prior art date
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Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4439—Auxiliary devices
- G02B6/4471—Terminating devices ; Cable clamps
- G02B6/44775—Cable seals e.g. feed-through
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4439—Auxiliary devices
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/44384—Means specially adapted for strengthening or protecting the cables the means comprising water blocking or hydrophobic materials
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4439—Auxiliary devices
- G02B6/4471—Terminating devices ; Cable clamps
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4415—Cables for special applications
- G02B6/4427—Pressure resistant cables, e.g. undersea cables
- G02B6/4428—Penetrator systems in pressure-resistant devices
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4439—Auxiliary devices
- G02B6/444—Systems or boxes with surplus lengths
- G02B6/4441—Boxes
- G02B6/4442—Cap coupling boxes
- G02B6/4444—Seals
Definitions
- the present invention relates to a locking device for an optical drop cable, and more particularly to a locking device for an optical drop cable that is provided with a waterproof measure.
- Patent Document 1 tensile strength members are disposed above and below an optical fiber core, and support wires are disposed on the upper tension member, and these support wires, tensile strength members, and optical fiber core wires are disposed.
- an optical drop cable in which a resin coating layer is formed by extrusion coating with a resin composition.
- the optical drop cable and the indoor indoor cable are connected using an optical connector in an optical cabinet installed on the indoor / outside wall of the house.
- a lock device for an optical drop cable is provided at the connection between the optical cabinet and the optical drop cable.
- the optical cabinet is installed on the outdoor wall, it is necessary to take a waterproof measure around the connection portion of the lock device for the optical drop cable.
- an object of the present invention is to provide an optical drop cable lock device that can easily realize a waterproof measure even for an optical drop cable having a specific shape.
- An optical drop cable locking device in which an optical fiber core wire and a tension member sandwiching the optical fiber core wire are covered with a sheath having a notch, A number of through-holes corresponding to the general shape of the sheath are formed along the axial center, and a rubber sleeve having a shape constituting a conical part;
- An optical drop cable locking device comprising: a member configured to squeeze the rubber sleeve toward its axial direction in a state where the optical drop cable is passed through the through hole.
- the through-hole has an approximately 8 character shape, and when a plurality of the through-holes are formed, they may be formed in the same direction.
- the rubber sleeve has a shape constituting a part of a conical shape
- the member may include a slit portion that surrounds a side surface of the rubber sleeve, and the rubber sleeve may be gripped by narrowing the slit portion toward its axis.
- the hardness of the rubber sleeve is preferably in the range of 40 degrees to 50 degrees.
- the present invention is a rubber sleeve used in the locking device for the optical drop cable, Several through-holes corresponding to the general shape of the sheath are formed along the axial center, and have a shape constituting a part of a conical shape, A rubber sleeve configured to be squeezed toward the axial direction in a state where the optical drop cable is passed through the through hole by the member in the optical drop cable locking device.
- FIG. 2 is an exploded perspective view showing the optical drop cable locking device 100 shown in FIGS. 1 (a) to 1 (d).
- FIG. 1A is a front view (FIG. 1A), a rear view (FIG. 1B), a plan view, and a bottom view (FIG. 1C) of an optical drop cable locking device 100 according to Embodiment 1 of the present invention.
- FIG. 1 (d) And left and right side views (FIG. 1 (d)).
- FIG. 2 is an exploded perspective view showing the optical drop cable locking device 100 shown in FIGS. 1 (a) to 1 (d). 1 and 2 show a bolt portion 10, a rubber sleeve 20, a cap 30, a rubber packing 40, and a lock nut 50, which will be described below.
- the bolt portion 10 and the cap 30 can be made of plastic such as polyamide
- the lock nut 50 can be made of resin such as polyamide or metal
- the rubber sleeve 20 and The rubber packing 40 can be made of rubber such as chloroprene rubber, nitrile rubber, and butyl rubber.
- the bolt part 10 has a hollow structure in which a space corresponding to the shape of the rubber sleeve 20 is formed.
- a hexagonal receiving portion 12 that receives a spanner or the like when tightening is located at the center of the bolt portion 10 in the longitudinal direction.
- shaft portions 14 and 16 having male threads are located on both ends of the receiving portion 12. The shaft portion 16 is screwed into the lock nut 50 in a state where the rubber packing 40 is inserted and is inserted into an opening provided in the optical cabinet to which the optical drop cable locking device 100 is attached. Is done.
- the shaft portion 14 is screwed with the cap 30 in a state where the rubber sleeve 20 is inserted.
- a stepped portion 14 ⁇ / b> A having an inner diameter smaller than the diameter of the bottom surface of the rubber sleeve 20 is formed on the inner wall of the shaft portion 14 in order to position the rubber sleeve 20 in the longitudinal direction of the bolt portion 10.
- a plurality of slits are provided at the tip of the shaft portion 14, and a slit portion 18 that surrounds the side surface of the rubber sleeve 20 is located at the time of use.
- Each slit constituting the slit portion 18 is formed at an angle of about 45 ° with respect to the radial direction of the bolt portion 10. The slit portion 18 is squeezed toward the axial center by screwing the bolt portion 10 and the cap 30, whereby the gripping of the rubber sleeve 20 is realized.
- the rubber sleeve 20 forms a part of a conical shape.
- the first surface 22 is a relatively small circular area
- the second surface 24 is a relatively large circular area.
- a through hole 26 penetrating from the first surface 22 to the second surface 24 along the axis of the rubber sleeve 20 and holding the optical drop cable.
- the cap 30 has the same configuration as a so-called hex nut, and has a female screw portion 32 screwed with the shaft portion 14 of the bolt portion 10 and an opening portion 36 through which the optical drop cable is passed. Further, a tapered portion 34 is formed adjacent to the opening 36. As described above, the tapered portion 34 has a function of narrowing the slit portion 18 of the bolt portion 10 toward the axial center thereof.
- the rubber packing 40 is for ensuring the sealing between the optical drop cable locking device 100 and an optical cabinet (not shown).
- the rubber packing 40 itself is not prepared separately, but instead, the sealing property is secured by sticking rubber or the like to the surface of the receiving portion 12 of the bolt portion 10 on the shaft portion 16 side. Also good.
- the lock nut 50 is for attaching the optical drop cable locking device 100 together with the bolt portion 10 to an optical cabinet (not shown), and an inner thread portion 52 is formed on the inner wall thereof to be screwed to the shaft portion 16. Yes.
- FIG. 3 is a schematic configuration diagram of an optical drop cable 200 passed through the rubber sleeve 20 shown in FIG.
- the optical drop cable 200 shown in FIG. 3 includes an optical fiber core 210, tension members (strength members) 220 located on both sides thereof, and a support line 240 provided adjacent to the tension member 220. And a sheath (resin coating layer) 230 covering these, and a notch portion 250 is formed in the sheath 230.
- the outline of the portion excluding the support wire 240 that is, the outline of the optical fiber core wire 210 and the tension member 220 and the sheath 230 covering them, the notch portion 250 is formed.
- the shape of figure 8 is formed.
- FIG. 4 is a front view (FIG. 4A), a plan view (FIG. 4B), and a bottom view (FIG. 4C) showing the rubber sleeve 20 through which the optical drop cable 200 shown in FIG. 3 is passed. It is.
- the rubber sleeve 20 has a general shape that forms part of a cone. Further, as shown in FIGS. 4B to 4C, both the first surface 22 and the second surface 24 are circular. Further, as shown in FIGS. 4A to 4B, the first surface 22 has a relatively small area compared to the second surface 24, and the first surface 22 is changed to the second surface 24. A through hole 26 is formed toward the surface.
- the portion of the optical drop cable 200 excluding the support wire 240 is passed through the through hole 26.
- the shape of the through hole 26 corresponds to the general shape of the optical drop cable 200 and is substantially 8 in shape.
- the rubber sleeve 20 is in a condition for ensuring the sealing property with the optical drop cable 200.
- the hardness of the rubber sleeve 20 according to JIS K 6253 is adjusted to be approximately 40 degrees to 50 degrees (for example, about 45 degrees). With such a hardness, when the optical drop cable 200 is gripped, it is hard and the optical drop cable 200 is not damaged, or it is soft and cannot be secured.
- the size of the through hole 26 is not limited to a condition that ensures sealing between the rubber sleeve 20 and the optical drop cable 200, but also considers the convenience of handling when the optical drop cable 200 is passed. Determined above.
- Most of the optical drop cable 200 has a size of a portion excluding the support wire 240 of about 3.2 mm ⁇ 2.0 mm. Therefore, the size of the through hole 26 is set to a size with a clearance of about 0 mm to 0.3 mm.
- the rubber sleeve 20 having such a condition When the rubber sleeve 20 having such a condition is used, the rubber sleeve 20 accommodated in the bolt portion 10 is tightened by the action of the slit portion 18 of the bolt portion 10 and the taper portion 34 of the cap 30. When gripping, the sealing property between them can be ensured.
- FIGS. 5 (a) to 5 (c) are schematic configuration diagrams of a rubber sleeve 20 according to another embodiment of the present invention, and each correspond to FIG. 4 (b).
- FIG. 5A two through holes 26 are formed
- FIG. 5B six through holes 26 are formed
- FIG. 5C ten through holes 26 are formed. Shows the state.
- the optical drop cable locking device 100 of the present embodiment may use a rubber sleeve 20 in which a plurality of through holes 26 are formed as shown in FIGS. 5 (a) to 5 (c).
- the optical drop cable lock device 100 is provided with an apartment house or the like. It is possible to use the rubber sleeve 20 in which the number of through-holes 26 according to the scale is formed.
- the shape of the optical drop cable 200 is the same. It is preferable to insert a substantially 8-shaped plug in the shape.
- the rubber sleeve 20 shown in FIGS. 5 (a) to 5 (c) is formed with all the through holes 26 aligned in the same direction. This is because the optical drop cable 200 has a direction that tends to bend due to its shape. If the direction of the through holes 26 is not aligned, it becomes difficult to take in a plurality of optical drop cables 200. On the other hand, a situation is considered in which if the optical drop cable 200 is forcibly bent in a direction in which it is difficult to bend, an adverse effect such as breakage of the optical fiber core 210 may occur. Therefore, as shown in FIGS. 5 (a) to 5 (c), it is important to form the through holes 26 of the rubber sleeve 20 in the same direction.
- FIG. 6 is a similar view of the rubber sleeve 20 shown in FIGS. 6 (a) to 6 (c) correspond to FIGS. 4 (a) to 4 (c), and FIGS. 6 (d) to 6 (e) correspond to FIG. 5 (a).
- FIGS. 6 (F) to FIG. 6 (g) correspond to FIG. 5 (b), and FIGS. 6 (h) to 6 (j) correspond to FIG. 5 (c).
- the left and right side views and the rear view are the same as the front views shown in FIGS. 6 (a) and 6 (h).
- the optical drop cable locking device 100 of the present embodiment manufactured according to the various conditions described above was able to realize IP66 as the protection class IP (International Protection) and 50N as the clamping force of the optical drop cable 200.
- the optical drop cable locking device 100 intended for the optical drop cable 200 has been described.
- the term optical drop cable is used in this specification.
- the indoor cable generally has a general shape of about 2 mm ⁇ 3 mm, but according to the investigation by the present applicant, the size of about 2 mm ⁇ 2 mm was the smallest.
- the clamping force when using a general size indoor cagle could be 50N.
- the clamping force when using the indoor cable of the minimum size was 30N.
- FIG. 7 is a side view (FIG. 7A) and a plan view of a rubber sleeve according to Embodiment 2 of the present invention (FIG. 7B).
- the rubber sleeve 20 shown in FIG. 7 has higher airtightness than that of the first embodiment.
- the rubber sleeve 20 includes a first portion that constitutes between the first surface 22 and the second surface 24, and a second portion that constitutes between the first surface 22 and the third surface 27.
- the part and the second part are integrally formed.
- the first portion includes a cylindrical surface that is parallel to the axis and a surface that forms a part of a conical shape as in the first embodiment.
- the second part forms a conical part from the first surface 22 to the third surface 27.
- the through-hole 26 is formed in the aspect which passes along the axial center of a 1st part and a 2nd part.
- the hardness of the rubber sleeve 20 is the same as that of the first embodiment, and is adjusted to be approximately 40 degrees to 50 degrees (for example, about 45 degrees).
- the size of the through hole 26 is such that a clearance of about 0 mm to 0.3 mm is provided for these.
- the second portion protrudes from the opening 36 of the cap 30.
- a self-bonding tape or the like is selectively wound between the second portion and the cap 30. Good.
- the airtight test was performed on the optical drop cable locking device 100 of the present embodiment under the following conditions. That is, the optical drop cable locking device 100 was assembled as described above, and air was applied from the inside of the shaft portion 16 at a pressure of about 0.15 MPa for 30 seconds. In this case, the presence or absence of air leakage from between the opening 36 and the second portion of the rubber sleeve 20 was confirmed. As a result, no air leakage occurred between the second portion and the cap 30 even when the self-fusing tape or the like was not wound.
Abstract
Description
光ファイバ心線とそれを挟み込むテンションメンバが、ノッチ部を有するシースによって覆われている光ドロップケーブル用ロック装置であって、
前記シースの概形に対応するいくつかの貫通孔が軸心に沿って形成されており、円錐状の一部を構成する形状のゴムスリーブと、
前記貫通孔に光ドロップケーブルが通された状態で、前記ゴムスリーブをその軸心方向に向けて絞るように構成されている部材とを備える光ドロップケーブル用ロック装置である。
前記部材は、前記ゴムスリーブの側面を囲うスリット部を備え、当該スリット部をその軸心に向けて絞ることで当該ゴムスリーブを把持するようにしてもよい。
前記シースの概形に対応するいくつかの貫通孔が軸心に沿って形成されており、円錐状の一部を構成する形状をしていて、
光ドロップケーブル用ロック装置における前記部材によって、前記貫通孔に光ドロップケーブルが通された状態で、軸心方向に向けて絞るように構成されている、ゴムスリーブである。
20 ゴムスリーブ
22 第1面
24 第2面
26 貫通孔
30 キャップ
40 ゴムパッキン
50 ロックナット
210 光ファイバ心線
220 テンションメンバ(抗張力体)
230 シース(樹脂被覆層)
240 支持線
250 ノッチ部
図1は、本発明の実施形態1の光ドロップケーブル用ロック装置100の正面図(図1(a))、背面図(図1(b))、平面図及び底面図(図1(c))、及び、左右側面図(図1(d))である。
図7は、本発明の実施形態2に係るゴムスリーブの側面図(図7(a))及び平面図である(図7(b))。図7に示すゴムスリーブ20は、実施形態1のものに比して、より気密性を高めたものである。
Claims (5)
- 光ファイバ心線とそれを挟み込むテンションメンバが、ノッチ部を有するシースによって覆われている光ドロップケーブル用ロック装置であって、
前記シースの概形に対応するいくつかの貫通孔が軸心に沿って形成されており、円錐状の一部を構成する形状のゴムスリーブと、
前記貫通孔に光ドロップケーブルが通された状態で、前記ゴムスリーブをその軸心方向に向けて絞るように構成されている部材とを備える光ドロップケーブル用ロック装置。 - 前記貫通孔は略8の字状であり、当該貫通孔が複数形成されている場合には、相互に同方向に揃えて形成されている、請求項1記載の光ドロップケーブル用ロック装置。
- 前記ゴムスリーブは円錐形の一部を構成する形状であり、
前記部材は、前記ゴムスリーブの側面を囲うスリット部を備え、当該スリット部をその軸心に向けて絞ることで当該ゴムスリーブを把持する、請求項1記載の光ドロップケーブル用ロック装置。 - 前記ゴムスリーブの硬度は、40度~50度の範囲である、請求項1記載の光ドロップケーブル用ロック装置。
- 請求項1記載の光ドロップケーブル用ロック装置に用いられるゴムスリーブであって、
前記シースの概形に対応するいくつかの貫通孔が軸心に沿って形成されており、円錐状の一部を構成する形状をしていて、
光ドロップケーブル用ロック装置における前記部材によって、前記貫通孔に光ドロップケーブルが通された状態で、軸心方向に向けて絞るように構成されている、ゴムスリーブ。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2013536362A JP5715704B1 (ja) | 2013-08-09 | 2013-08-09 | 光ドロップケーブル用ロック装置 |
KR1020147008511A KR101603452B1 (ko) | 2013-08-09 | 2013-08-09 | 광 드롭 케이블 잠금 장치 |
US14/350,421 US9261665B2 (en) | 2013-08-09 | 2013-08-09 | Locking devise for optical drop cable |
BR112014007874A BR112014007874A2 (pt) | 2013-08-09 | 2013-08-09 | dispositivo de fechamento para cabo óptico do tipo drop |
PCT/JP2013/071717 WO2015019503A1 (ja) | 2013-08-09 | 2013-08-09 | 光ドロップケーブル用ロック装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2013/071717 WO2015019503A1 (ja) | 2013-08-09 | 2013-08-09 | 光ドロップケーブル用ロック装置 |
Publications (1)
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WO2015019503A1 true WO2015019503A1 (ja) | 2015-02-12 |
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ID=52460869
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PCT/JP2013/071717 WO2015019503A1 (ja) | 2013-08-09 | 2013-08-09 | 光ドロップケーブル用ロック装置 |
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Country | Link |
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US (1) | US9261665B2 (ja) |
JP (1) | JP5715704B1 (ja) |
KR (1) | KR101603452B1 (ja) |
BR (1) | BR112014007874A2 (ja) |
WO (1) | WO2015019503A1 (ja) |
Families Citing this family (1)
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BR112014007874A2 (pt) * | 2013-08-09 | 2017-04-18 | Seiwa Electric Mfg | dispositivo de fechamento para cabo óptico do tipo drop |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09243832A (ja) * | 1996-03-13 | 1997-09-19 | Fujikura Ltd | ケーブル貫通部の防水構造 |
JP2001337255A (ja) * | 2000-05-26 | 2001-12-07 | Fujikura Ltd | ドロップ光ファイバケーブル |
JP2002348424A (ja) * | 2001-03-21 | 2002-12-04 | Sumitomo Rubber Ind Ltd | 低弾性率高分子組成物およびそれを用いたシール材 |
JP2011517274A (ja) * | 2008-04-09 | 2011-05-26 | スリーエム イノベイティブ プロパティズ カンパニー | 電気通信ケーブル入線装置 |
JP2011525695A (ja) * | 2008-06-24 | 2011-09-22 | スリーエム イノベイティブ プロパティズ カンパニー | 電気通信ケーブル入線装置 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5943462A (en) * | 1997-11-12 | 1999-08-24 | Methode Electronics, Inc. | Fiber optic stub assembly having a water resistant barrier and method for manufacturing the same |
US7097486B2 (en) * | 2005-02-03 | 2006-08-29 | Cushcraft Corporation | Low-cost weatherproof cable feedthrough |
JP5169966B2 (ja) | 2009-04-14 | 2013-03-27 | 日立電線株式会社 | 架空光ドロップケーブル |
CN102375190B (zh) * | 2010-08-27 | 2014-01-22 | 鸿富锦精密工业(深圳)有限公司 | 光缆保护机构 |
US8686289B2 (en) * | 2011-07-14 | 2014-04-01 | Channell Commercial Corporation | Sealing mechanism and method for drop cable splice enclosures |
BR112014007874A2 (pt) * | 2013-08-09 | 2017-04-18 | Seiwa Electric Mfg | dispositivo de fechamento para cabo óptico do tipo drop |
-
2013
- 2013-08-09 BR BR112014007874A patent/BR112014007874A2/pt not_active Application Discontinuation
- 2013-08-09 WO PCT/JP2013/071717 patent/WO2015019503A1/ja active Application Filing
- 2013-08-09 US US14/350,421 patent/US9261665B2/en not_active Expired - Fee Related
- 2013-08-09 KR KR1020147008511A patent/KR101603452B1/ko active IP Right Grant
- 2013-08-09 JP JP2013536362A patent/JP5715704B1/ja active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09243832A (ja) * | 1996-03-13 | 1997-09-19 | Fujikura Ltd | ケーブル貫通部の防水構造 |
JP2001337255A (ja) * | 2000-05-26 | 2001-12-07 | Fujikura Ltd | ドロップ光ファイバケーブル |
JP2002348424A (ja) * | 2001-03-21 | 2002-12-04 | Sumitomo Rubber Ind Ltd | 低弾性率高分子組成物およびそれを用いたシール材 |
JP2011517274A (ja) * | 2008-04-09 | 2011-05-26 | スリーエム イノベイティブ プロパティズ カンパニー | 電気通信ケーブル入線装置 |
JP2011525695A (ja) * | 2008-06-24 | 2011-09-22 | スリーエム イノベイティブ プロパティズ カンパニー | 電気通信ケーブル入線装置 |
Also Published As
Publication number | Publication date |
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US9261665B2 (en) | 2016-02-16 |
JP5715704B1 (ja) | 2015-05-13 |
KR101603452B1 (ko) | 2016-03-14 |
KR20150054706A (ko) | 2015-05-20 |
BR112014007874A2 (pt) | 2017-04-18 |
JPWO2015019503A1 (ja) | 2017-03-02 |
US20150219868A1 (en) | 2015-08-06 |
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