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1. 发明专利

JP2007071324A Inserting method of insertion pipe 审中-公开
标题翻译：插入管插入方法
公开(公告)号：JP2007071324A
公开(公告)日：2007-03-22
申请号：JP2005260167
申请日：2005-09-08
申请人： Osaka Gas Co Ltd , Seibu Gas Co Ltd , Sekisui Chem Co Ltd , Toho Gas Co Ltd , Tokyo Gas Co Ltd , 大阪瓦斯株式会社 , 東京瓦斯株式会社 , 東邦瓦斯株式会社 , 積水化学工業株式会社 , 西部瓦斯株式会社
发明人： ITO RYOSUKE , MIZUKAWA KENJI , AKIYAMA SHINICHI , HIGUCHI HIROSHI , NOSE MASAKI , TOYODA YASUHIRO
IPC分类号： F16L1/00
摘要： PROBLEM TO BE SOLVED: To smoothly insert an insertion pipe into a much-deflected existing pipe without any damage.
SOLUTION: When pushing the insertion pipe into the existing pipe, the insertion pipe is pushed into the existing pipe while adjusting pushing load wherein compression force on the insertion pipe is less than the load to plastically deform the insertion pipe and pushing speed. The insertion pipe is also pushed from the other side of the existing pipe while adjusting pulling force wherein expanding force on the insertion pipe is less than the load to plastically deform the insertion pipe and pulling speed, and accordingly, the insertion pipe is inserted into the existing pipe by pulling the insertion pipe.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：将插入管平滑地插入到现有的管道中，而不会有任何损坏。解决方案：当将插入管推入现有管道时，插入管被推入现有的管道，同时调整推力负载，其中插入管上的压缩力小于负载以使插管发生塑性变形和推动速度。插入管也从现有管的另一侧被推动，同时调节拉力，其中插入管上的扩张力小于使插入管弹性变形的载荷和拉拔速度，因此插入管插入现有管道拉拔插管。版权所有（C）2007，JPO＆INPIT

2. 发明专利

JP2005291253A Joint for connecting corrugated pipe 有权
标题翻译：连接管接头
公开(公告)号：JP2005291253A
公开(公告)日：2005-10-20
申请号：JP2004104020
申请日：2004-03-31
申请人： Osaka Gas Co Ltd , Seibu Gas Co Ltd , Sekisui Chem Co Ltd , Toho Gas Co Ltd , Tokyo Gas Co Ltd , 大阪瓦斯株式会社 , 東京瓦斯株式会社 , 東邦瓦斯株式会社 , 積水化学工業株式会社 , 西部瓦斯株式会社
发明人： MIZUKAWA KENJI , ITO RYOSUKE , YAGI SHUICHI , HIGUCHI HIROSHI , KOSAKA MASAMICHI , TOYODA YASUHIRO
IPC分类号： F16L33/00 , F16L33/28
摘要： PROBLEM TO BE SOLVED: To provide a joint for connecting a corrugated pipe, which need not manufacture a seal material to fit the wavy shape of the corrugated pipe, and can accurately mount the seal material on the corrugated pipe without twisting the seal material, and can show a large holding force against a force in the direction of the coming-off of the corrugated pipe.
SOLUTION: An engaging projection of a lock ring is inserted into an annular recessed portion of the corrugated pipe. The coming-off of the corrugated pipe from the joint body is prevented by the lock ring. In addition, an O-ring is brought into pressure contact with both side surfaces of the annular recessed portion by holding the O-ring in the compressed state between a spigot portion inserted into the joint body and a retainer fitted in the joint body. Further, a part of the O-ring in the neighborhood of its inside diameter is inserted into the annular recessed portion so as to prevent the coming-off of the corrugated pipe by the O-ring.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种用于连接不需要制造密封材料以适应波纹管的波状形状的波纹管的接头，并且可以将密封材料精确地安装在波纹管上而不扭曲密封件材料，并且能够显示出相对于波纹管的脱落方向的力的大的夹持力。解决方案：锁环的接合突起插入到波纹管的环形凹部中。通过锁环防止波纹管从接头体的脱落。此外，通过将O形环保持在插入接头体的插口部分和装配在接头体中的保持器之间的压缩状态下，O形环与环形凹部的两个侧表面压力接触。此外，将O形环的内径附近的一部分插入环形凹部，以防止波纹管由O形环脱落。版权所有（C）2006，JPO＆NCIPI

3. 发明专利

JP2005291257A Method for inserting corrugated pipe into existing piping 审中-公开
标题翻译：将管道插入现有管道的方法
公开(公告)号：JP2005291257A
公开(公告)日：2005-10-20
申请号：JP2004104024
申请日：2004-03-31
申请人： Osaka Gas Co Ltd , Seibu Gas Co Ltd , Sekisui Chem Co Ltd , Toho Gas Co Ltd , Tokyo Gas Co Ltd , 大阪瓦斯株式会社 , 東京瓦斯株式会社 , 東邦瓦斯株式会社 , 積水化学工業株式会社 , 西部瓦斯株式会社
发明人： ITO RYOSUKE , MIZUKAWA KENJI , YAGI SHUICHI , HIGUCHI HIROSHI , KOSAKA MASAMICHI , TOYODA YASUHIRO
IPC分类号： F16L1/00
摘要： PROBLEM TO BE SOLVED: To provide a method for inserting a corrugated pipe into existing piping capable of reducing a gap between the existing piping and the corrugated pipe and smoothly pulling the corrugated pipe without having connection with inner and outer surface shapes regarding a pipe diameter of the corrugated pipe in spite of a meandering pipe.
SOLUTION: In the method for inserting a corrugated pipe into the existing piping, a grasping portion formed by braiding the wire material in a cylindrical or conical shape having an opening at one side is provided, and the grasping portion, where the inner diameter of the grasping portion is shrunken when the grasping portion is extended, is fixed on the wire material for pulling at a portion excluding an opening edge of the grasping portion. After inserting the tip of the corrugated pipe at a pulling direction from the opening of the grasping portion, the grasping portion is shrunken in diameter by extending the grasping portion, and the wire material for pulling is pulled out while the corrugated pipe is grasped by grasping portion of a grasping member by making an inner wall surface of the grasping portion bring into press contact with and engage with an outer periphery of the corrugated pipe.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种将波纹管插入到现有管道中的方法，该管道能够减小现有管道和波纹管之间的间隙，并且平滑地拉动波纹管而不会与内表面形状和外表面形状相关联波纹管的管径尽管有曲折的管道。解决方案：在将波纹管插入现有管道的方法中，设有通过将线材编织成具有一侧开口的圆柱形或圆锥形形状而形成的把持部，并且夹持部当把持部分延伸时，把持部分的直径被收缩，固定在线材上，用于在夹持部分的开口边缘以外的部分处拉动。在从夹持部的开口将拉出方向插入波纹管的前端之后，通过使夹持部延伸而使抓持部直径缩小，拉出的拉丝材料被拉出，同时抓住波纹管通过使抓持部的内壁面与波纹管的外周压接并与其接合，从而抓握构件的一部分。版权所有（C）2006，JPO＆NCIPI

4. 发明专利

JP2007263247A Pulling device for existing pipe lining pipe member 审中-公开
标题翻译：用于现有管道衬管成员的抽出装置
公开(公告)号：JP2007263247A
公开(公告)日：2007-10-11
申请号：JP2006089974
申请日：2006-03-29
申请人： Osaka Gas Co Ltd , Seibu Gas Co Ltd , Sekisui Chem Co Ltd , Toho Gas Co Ltd , Tokyo Gas Co Ltd , 大阪瓦斯株式会社 , 東京瓦斯株式会社 , 東邦瓦斯株式会社 , 積水化学工業株式会社 , 西部瓦斯株式会社
发明人： ITO RYOSUKE , MIZUKAWA KENJI , KAMATA SUSUMU , AKIYAMA SHINICHI , HIGUCHI HIROSHI , NOSE MASAKI , TOYODA YASUHIRO
IPC分类号： F16L1/00 , B29C63/34
摘要： PROBLEM TO BE SOLVED: To provide a pulling device for an existing pipe lining pipe member, capable of pulling the lining pipe member out of the other end of an existing pipe with a fixed pulling load not greater than allowable stress on the pipe member while pushing the lining pipe member from one end of the existing pipe, and of inserting the lining pipe member into the existing pipe in a short time while surely preventing the physical performance deterioration, damage and rupture of the lining pipe member.
SOLUTION: The pulling device comprises a rotary drum member, a motor driving means for rotationally driving the rotary drum member, and a pulling load detecting means for detecting a pulling load on a strip member when winding the strip member on the rotary drum member. The pipe member is pulled while adjusting the pulling-out speed or amount of the pipe member pushed into the existing pipe so that the pulling load detected by the pulling load detecting means is kept at a prefixed value.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了提供一种用于现有管道衬管的构件的牵引装置，其能够以不大于管道上的容许应力的固定牵引负载将衬管构件拉出现有管的另一端同时从现有管的一端推动衬管构件，并且在短时间内将衬管组件插入现有管中，同时可靠地防止衬管管构件的物理性能下降，损坏和破裂。解决方案：牵引装置包括旋转鼓构件，用于旋转驱动旋转鼓构件的马达驱动装置，以及牵引载荷检测装置，用于在将带状构件卷绕在旋转鼓上时检测带状构件上的拉力会员。在调节推入现有管道的管件的拉出速度或量的同时拉动管件，使得由牵引负载检测装置检测的牵引负载保持在预定值。版权所有（C）2008，JPO＆INPIT

5. 发明专利

JP2006142229A Renewal construction method for pipe line and drive device for polishing member used for the method 审中-公开
标题翻译：用于抛光方法的管道和驱动装置的再生施工方法
公开(公告)号：JP2006142229A
公开(公告)日：2006-06-08
申请号：JP2004337183
申请日：2004-11-22
申请人： Osaka Gas Co Ltd , Seibu Gas Co Ltd , Sekisui Chem Co Ltd , Toho Gas Co Ltd , Tokyo Gas Co Ltd , 大阪瓦斯株式会社 , 東京瓦斯株式会社 , 東邦瓦斯株式会社 , 積水化学工業株式会社 , 西部瓦斯株式会社
发明人： ITO RYOSUKE , AKIYAMA SHINICHI , HIGUCHI HIROSHI , NOSE MASAKI , TOYODA YASUHIRO
IPC分类号： B08B9/02 , B08B9/04 , F16L1/00 , F16L55/00
摘要： PROBLEM TO BE SOLVED: To provide a renewal construction method of a pipe line and a drive device for a polishing member used for the method, allowing smooth insertion of a thickest possible synthetic resin pipe into an existing line with little resistance, and causing no flaw on the surface of the synthetic resin pipe in inserting. SOLUTION: This renewal construction method of a pipe line comprises a pretreating process, before inserting the synthetic resin pipe for renewal, of inserting the long polishing member having a polishing part at least at a part in the lengthwise direction and deformable along bending parts of the existing pipes, applying tension from both sides to prevent loosening of the polishing member, moving the polishing member in the axial direction of the existing pipe to polish the part to be polished in the existing pipe with the polishing member; and a process of inserting the synthetic resin pipe for renewal into the existing line. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了提供一种用于该方法的管线和用于抛光部件的驱动装置的更新施工方法，允许将最厚可能的合成树脂管道平滑地插入到具有很小阻力的现有管线中，以及在插入时在合成树脂管的表面上不产生缺陷。解决方案：管线的更新施工方法包括预处理过程，在插入用于更新的合成树脂管之前，将具有抛光部分的长抛光构件至少沿长度方向的一部分插入并沿弯曲变形现有管道的一部分，从两侧施加张力以防止抛光构件的松动，使抛光构件沿着现有管的轴向移动，以用抛光构件在现有管中抛光待抛光部件; 以及将用于更新的合成树脂管插入到现有生产线中的过程。版权所有（C）2006，JPO＆NCIPI

6. 发明专利

JP2005291258A Method for inserting corrugated pipe into existing piping 审中-公开
标题翻译：将管道插入现有管道的方法
公开(公告)号：JP2005291258A
公开(公告)日：2005-10-20
申请号：JP2004104025
申请日：2004-03-31
申请人： Osaka Gas Co Ltd , Seibu Gas Co Ltd , Sekisui Chem Co Ltd , Toho Gas Co Ltd , Tokyo Gas Co Ltd , 大阪瓦斯株式会社 , 東京瓦斯株式会社 , 東邦瓦斯株式会社 , 積水化学工業株式会社 , 西部瓦斯株式会社
发明人： ITO RYOSUKE , MIZUKAWA KENJI , YAGI SHUICHI , HIGUCHI HIROSHI , KOSAKA MASAMICHI , TOYODA YASUHIRO
IPC分类号： F16L1/00
摘要： PROBLEM TO BE SOLVED: To provide a method for inserting a corrugated pipe into existing piping capable of smoothly passing through many curves when an inner diameter of the corrugated pipe is large and a wall of the corrugated pipe is thick, and when unevenness of a corrugated shape of the corrugated pipe is small so as to suppress increase of pressure loss of fluid flowing inside the corrugated pipe.
SOLUTION: The corrugated pipe is heated up to temperature at which flexibility of the corrugated pipe is increased without thermal deformation thereof at least either of timing before and while the corrugated pipe is inserted into the existing piping.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种当波纹管的内径大并且波纹管的壁较厚时，将波纹管插入到能够顺利通过许多曲线的现有管道中的方法，并且当不平坦波纹管的波纹形状较小，以抑制在波纹管内流动的流体的压力损失的增加。解决方案：将波纹管加热至波纹管的柔性增加而波纹管插入到现有管道中的至少任一时刻的热变形的波纹管的温度。版权所有（C）2006，JPO＆NCIPI

7. 发明专利

JP2005291254A Synthetic resin two-layered corrugated pipe, and repair method of pipe for inserting the same corrugated pipe into overaged existing piping 有权
标题翻译：合成树脂双层腐蚀管，以及用于将相同的管道插入到过去的现有管道中的管道的修理方法
公开(公告)号：JP2005291254A
公开(公告)日：2005-10-20
申请号：JP2004104021
申请日：2004-03-31
申请人： Osaka Gas Co Ltd , Seibu Gas Co Ltd , Sekisui Chem Co Ltd , Toho Gas Co Ltd , Tokyo Gas Co Ltd , 大阪瓦斯株式会社 , 東京瓦斯株式会社 , 東邦瓦斯株式会社 , 積水化学工業株式会社 , 西部瓦斯株式会社
发明人： ITO RYOSUKE , MIZUKAWA KENJI , YAGI SHUICHI , HIGUCHI HIROSHI , KOSAKA MASAMICHI , TOYODA YASUHIRO
IPC分类号： F16L1/00 , F16L11/11
摘要： PROBLEM TO BE SOLVED: To provide a corrugated pipe and a repair method of a pipe using the same corrugated pipe capable of smoothly inserting into an overaged, bent existing piping and repairing the existing piping and having strength of the pipe which can prevent leakage of fluid running the inside of the existing piping in spite of damage on the outside of the corrugated pipe in the case of insertion and minimizing pressure loss.
SOLUTION: The corrugated pipe has an outer-layered tubular portion having an approximately waveform on a cross section in an axial direction of a pipe, and an inner-layered tubular portion of the same pitch with the outer-layered tubular portion having an approximately waveform on a cross section in the axial direction of the pipe. The outer-layered tubular portion and inner-layered tubular portion are integrated at a portion only which is a valley portion of the sectioned waveform, and a ridge portion of the inner-layered tubular portion enters into the ridge of the outer-layered tubular portion.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种波纹管和使用相同的波纹管的管道的修理方法，该波纹管能够平滑地插入过度弯曲的现有管道中并修复现有管道并具有能够防止的管道的强度在插入情况下，尽管在波纹管的外部损坏了现有管道内部的流体的泄漏并且使压力损失最小化。解决方案：波纹管具有在管的轴向上的横截面上具有近似波形的外层管状部分，并且与外层管状部分具有相同间距的内层管状部分具有在管的轴向上的横截面上的大致波形。外层管状部分和内层管状部分集成在仅为分段波形的谷部的部分，并且内层管状部分的脊部进入外层管状部分的脊部。版权所有（C）2006，JPO＆NCIPI

8. 发明专利

JP2007260847A Renewing method of pipe line and reciprocatory driving device of polishing member used for this renewing method 有权
标题翻译：用于本次更新方法的抛光构件的管线和再循环驱动装置的再生方法
公开(公告)号：JP2007260847A
公开(公告)日：2007-10-11
申请号：JP2006089976
申请日：2006-03-29
申请人： Osaka Gas Co Ltd , Seibu Gas Co Ltd , Sekisui Chem Co Ltd , Toho Gas Co Ltd , Tokyo Gas Co Ltd , 大阪瓦斯株式会社 , 東京瓦斯株式会社 , 東邦瓦斯株式会社 , 積水化学工業株式会社 , 西部瓦斯株式会社
发明人： ITO RYOSUKE , MIZUKAWA KENJI , KAMATA SUSUMU , AKIYAMA SHINICHI , HIGUCHI HIROSHI , NOSE MASAKI , TOYODA YASUHIRO
IPC分类号： B24B9/00 , B24B5/40 , F16L1/00
摘要： PROBLEM TO BE SOLVED: To provide a renewing method of a pipe line, which includes a burr removing process of efficiently removing burrs on a corner part of the inside of a bent part of an existing piping, and also to provide a reciprocatory driving device of a polishing member used for this renewing method.
SOLUTION: This renewing method of the pipe line comprises: the burr removing process to polish and remove the burrs on the corner part of the inside of the bent part by a polishing part by reciprocating the polishing member along the existing pipe line in a state of pressing the polishing part on the corner part of the inside of the bent part while maintaining a strained state of the polishing member by arranging the polishing part on the corner part of the inside of the bent part after inserting the polishing member furnished with the polishing part in the existing pipe line; and a process to insert a synthetic resin pipe for renewing in the existing pipe line finished with removal of the burrs. The corner part of the inside of the bent part is polished so that polishing width of the corner part of the inside of the bent part in an after-process becomes wider in comparison with polishing width in a pre-process by using the polishing parts different in size while practicing the burr removing process a plural number of times.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种管线更新方法，其包括有效去除现有管道的弯曲部分的内侧的角部上的毛刺的毛刺去除工艺，并且还提供往复式用于该更新方法的抛光部件的驱动装置。解决方案：该管道更新方法包括：通过抛光部件沿着现有管道往复运动抛光构件来抛光和去除弯曲部分内部角部的毛刺的毛刺去除工艺将抛光部件压在弯曲部分的内侧的部分的状态，同时通过将抛光部件插入到设置有抛光部件的抛光部件之后，将抛光部分设置在弯曲部分的内部的角部上，同时保持抛光部件的应变状态现有管线中的抛光部分; 以及在已除去毛刺的现有管线中插入用于更新的合成树脂管的方法。对弯曲部的内侧的角部进行抛光，使得后处理中的弯曲部的内侧的角部的抛光宽度与通过使用不同的研磨部的预处理的抛光宽度相比变宽在进行毛刺去除处理多次时的尺寸。版权所有（C）2008，JPO＆INPIT

9. 发明专利

JP2005291256A Method for inserting corrugated pipe into existing piping and inserting fixture used for the same inserting method 有权
标题翻译：将修补管插入现有管道和插入方法用于相同插入方法
公开(公告)号：JP2005291256A
公开(公告)日：2005-10-20
申请号：JP2004104023
申请日：2004-03-31
申请人： Osaka Gas Co Ltd , Seibu Gas Co Ltd , Sekisui Chem Co Ltd , Toho Gas Co Ltd , Tokyo Gas Co Ltd , 大阪瓦斯株式会社 , 東京瓦斯株式会社 , 東邦瓦斯株式会社 , 積水化学工業株式会社 , 西部瓦斯株式会社
发明人： ITO RYOSUKE , MIZUKAWA KENJI , YAGI SHUICHI , HIGUCHI HIROSHI , KOSAKA MASAMICHI , TOYODA YASUHIRO
IPC分类号： B25B27/02 , F16L1/00 , F16L55/18
摘要： PROBLEM TO BE SOLVED: To provide a method for inserting a corrugated pipe into existing piping and a convenient inserting fixture used for the inserting method capable of sending into the existing piping at one time in spite of a long distance without degrading its performance by folding the corrugated pipe.
SOLUTION: The inserting fixture with a guide pipe portion having an inner diameter approximately similar to an outer diameter of the corrugated pipe capable of being inserted by the corrugated pipe and an outer diameter capable of inserting into an existing pipe by means of pushing motions is confronted with one opening edge of the existing piping while the corrugated pipe is inserted into the guide pipe portion, and the guide pipe portion is pushed into the existing piping by holding the corrugated pipe at a pipe-axis direction of the guide pipe portion in a non-sliding state. After completing pushing motions, slide holding of the corrugated pipe is released, and pulling motions pulling the guide pipe portion from the existing pipe are repeated.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种将波纹管插入现有管道的方法和用于插入方法的方便的插入夹具，其能够一次送入现有的管道，尽管距离较远，而不降低其性能通过折叠波纹管。解决方案：具有导管部分的插入夹具具有与波纹管的外径大致相似的内径，能够被波纹管插入，外径可以通过推动插入到现有的管中当波纹管插入导管部分时，运动面对现有管道的一个开口边缘，并且通过将波纹管保持在导管部分的管轴方向上将导管部分推入现有管道中处于非滑动状态。在完成推动运动之后，释放波纹管的滑动保持，并且重复从现有管拉出引导管部分的牵引运动。版权所有（C）2006，JPO＆NCIPI

10. 发明专利

JP2005291255A Method for inserting corrugated pipe into existing piping and insertion support fixture used for the inserting method 审中-公开
标题翻译：将管道插入现有管道和插入方法用于插入方法的方法
公开(公告)号：JP2005291255A
公开(公告)日：2005-10-20
申请号：JP2004104022
申请日：2004-03-31
申请人： Osaka Gas Co Ltd , Seibu Gas Co Ltd , Sekisui Chem Co Ltd , Toho Gas Co Ltd , Tokyo Gas Co Ltd , 大阪瓦斯株式会社 , 東京瓦斯株式会社 , 東邦瓦斯株式会社 , 積水化学工業株式会社 , 西部瓦斯株式会社
发明人： ITO RYOSUKE , MIZUKAWA KENJI , YAGI SHUICHI , HIGUCHI HIROSHI , KOSAKA MASAMICHI , TOYODA YASUHIRO
IPC分类号： F16L58/18 , F16L1/00 , F16L55/18
摘要： PROBLEM TO BE SOLVED: To provide a method for inserting a corrugated pipe into existing piping and an insertion support fixture used for the inserting method capable of smoothly inserting the corrugated pipe into the existing piping without damaging the corrugated pipe in the inserting method repeating pushing motions and pulling motions.
SOLUTION: In the method for inserting the corrugated pipe into the existing piping which performs the pulling motions and pushing motions and inserts the corrugated pipe into the existing piping, a firmly-stuck coil spring together with the corrugated pipe is pulled out by a wire material while the flexible firmly-stuck coil spring with a diameter smaller than that of the corrugated pipe is inserted into the corrugated pipe. Further, after feeding the firmly-stuck coil spring together with the corrugated pipe to the existing pipe and inserting the corrugated pipe into the existing pipe, the firmly-stuck coil spring is pulled out from an either side of the existing pipe.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种将波纹管插入现有管道的方法和用于插入方法的插入支撑夹具，其能够将波纹管平滑地插入现有管道中而不会在插入方法中损坏波纹管重复推动动议和拉动动议。
解决方案：在将波纹管插入到执行拉动和推动运动的现有管道中并将波纹管插入现有管道的方法中，将与波纹管一起牢固粘住的螺旋弹簧拉出当波纹管的直径小于波纹管的直径的柔性牢固粘着的螺旋弹簧插入波纹管中时，线材。此外，在将紧固螺旋弹簧与波纹管一起供给到现有的管子并将波纹管插入到现有的管中之后，将牢固粘住的螺旋弹簧从现有管的任一侧拉出。版权所有（C）2006，JPO＆NCIPI

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