专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

61. 发明专利

JPH0663483A RESIN COATING DIE 失效
公开(公告)号：JPH0663483A
公开(公告)日：1994-03-08
申请号：JP21696992
申请日：1992-08-14
申请人： FUJIKURA LTD
发明人： OKADA NAOKI , KOBAYASHI KAZUNAGA , ARAKI SHINJI , MIYAMOTO SUEHIRO
IPC分类号： B05C3/12 , G02B6/44
摘要： PURPOSE:To obtain a resin coating die capable of producing an optical fiber tape core wire consisting of optical fiber strands held to an accurately arranged state by colectively coating the optical fiber tape core wire consisting of many optical fiber strands, especially, five or more optical fiber strands. CONSTITUTION:Two or more of coating parts 14, 18 constituted of resin sump parts 15, 19 and die parts 16, 20 are provided in series and the opening dimension of the die part 16 on the inlet side of optical fiber strands 1... is made smaller than that of the die part 20 on the outlet side of said strands.

62. 发明专利

JPH03214104A DEVICE FOR FEEDING OPTICAL UNIT BY PRESSURE 失效
公开(公告)号：JPH03214104A
公开(公告)日：1991-09-19
申请号：JP955390
申请日：1990-01-19
申请人： FUJIKURA LTD
发明人： MOGI AKIO , TAKADA JIRO , OKADA NAOKI , MISONO NOBUYUKI , SUZUKI HIDEO
IPC分类号： G02B6/46 , G02B6/44 , H02G1/08
摘要： PURPOSE:To improve forced feeding characteristics by partitioning a forced feeding chamber into >=2 small mutual communicating chambers in the sending- out direction of an optical unit and making the pressure in the small chamber on the side in the lead-in direction of the optical unit higher than the pressure in the small chamber on the side in the sending-out direction of the optical unit. CONSTITUTION:A passage 13 is sectioned into the two chambers 20 and 21, i.e. the 1st small chamber 20 on the side of an optical unit insertion port and the 2nd small chamber 21 on the sending-out side of the optical unit in the sending-out direction of the optical unit 12. Then air pressure applied from compressed air flow passages 17 and 18 is so set that the air pressure in the 1st compressed air flow passage 17 is higher than the air pressure in the 2nd compressed air flow passage 18 and the air pressure in the 1st chamber 20 on the optical unit insertion port side is higher than the air pressure in the 2nd small chamber 21 on the optical unit sending-out side. Consequently, even if a little air leaks from the optical unit insertion port, the air pressure in the small chamber 21 on the side in the sending-out direction of the optical unit does not drop and the excellent forced feeding characteristics are obtained.

63. 发明专利

JPH0356908A THINNED OPTICAL UNIT 失效
公开(公告)号：JPH0356908A
公开(公告)日：1991-03-12
申请号：JP19297589
申请日：1989-07-26
申请人： FUJIKURA LTD
发明人： MOGI AKIO , OKADA NAOKI , MISONO NOBUYUKI , SUZUKI HIDEO
IPC分类号： G02B6/44
摘要： PURPOSE:To allow leading without damaging the coating layers of optical fibers by coating the assembly of optical fibers with non-crystalline nylon 12 and coating the outer periphery thereof with a PEF resin. CONSTITUTION:The optical fibers 2 are disposed in contact with each other around a central TM 1 and a thin layer 3 of the non-crystalline nylon 12 is applied and formed around the fibers. A coating 4 consisting of foamed polyethylene (PEF) is applied on the outer side thereof. This non-crystalline nylon 12 has excellent tensile strength, tear strength or elongation, etc., but expands and embrittles rapidly when the nylon 12 is brought into contact with ethyl alcohol. The secondary coating layer 4 of the PEF resin on the outer side is, therefore, removed by a cutter and, thereafter, the end part of the unit is immersed into the ethyl alcohol and the swollen thin layer 3 of the nylon can be easily stripped away. The leading operation is thus executed without damaging the coating layers of the optical fibers.

64. 发明专利

JPH02259611A OPTICAL FIBER CABLE 失效
公开(公告)号：JPH02259611A
公开(公告)日：1990-10-22
申请号：JP7832889
申请日：1989-03-31
申请人： FUJIKURA LTD
发明人： MOGI AKIO , OKADA NAOKI , MISONO NOBUYUKI , SUZUKI HIDEO
IPC分类号： G02B6/44
摘要： PURPOSE:To allow the easy execution of a post branch connection without adversely affecting other actual circuits by providing a non-optical fiber filamentous body in place of one optical fiber unit. CONSTITUTION:This cable is constituted by providing the optical fiber units 2 around a tensile body 1 and replacing one of these units 2 with the non-optical fiber filamentous body 4. An intervening cord (plastic cord, such as polyethylene cord, which is liable to be cut) or spacer (not inserted with optical fibers) is exemplified as the non-optical fiber filamentous body 4. A space for a branch connection is easily secured in the case of branch-connecting a cable for a fresh subscriber to the existing optical fiber cable in this way. The branch connection is thus executed with no influence at all on the optical fiber units 2 used as the actual circuits.

65. 发明专利

JPH02184545A PRODUCTION OF OPTICAL FIBER CORE COATED WITH FLUORORESIN 失效
公开(公告)号：JPH02184545A
公开(公告)日：1990-07-19
申请号：JP255689
申请日：1989-01-09
申请人： FUJIKURA LTD
发明人： MOGI AKIO , OKADA NAOKI , MISONO NOBUYUKI , SUZUKI HIDEO
IPC分类号： G02B6/44 , C03C25/10 , C03C25/24
摘要： PURPOSE:To obtain a fluororesin-coated optical fiber core having low transmission loss by extruding a high-melting fluororesin at a high temperature on an optical fiber filament subjected to primary coating, slowly cooling the obtained secondary coated filament with air and forcedly cooling the filament before the generation of gas from the primary coated filament. CONSTITUTION:A primary coated optical fiber filament is subjected to secondary coating by continuously extruding a high-melting fluororesin (e.g. tetrafluoroethylene-hexafluoropropylene copolymer) at a melting temperature of >=300 deg.C on the filament. The coated filament is slowly cooled with air and, prior to the generation of gas from the primary coated filament. the filament is forcedly cooled by passing through water of 5-60 deg.C. The formation of inhomogeneous layer caused by the generated gas can be suppressed by this process. Furthermore, the process is effective in preventing the generation of strain caused by the shrinkage of the coating layer. An optical fiber core having secondary coating layer of a heat-resistant fluororesin and having decreased transmission loss can be produced by this process.

66. 发明专利

JPH026912A OPTICAL CABLE 失效
公开(公告)号：JPH026912A
公开(公告)日：1990-01-11
申请号：JP15737988
申请日：1988-06-26
申请人： FUJIKURA LTD
发明人： SUGAWARA YASUYUKI , MOGI AKIO , OKADA NAOKI , MISONO NOBUYUKI
IPC分类号： G02B6/44
摘要： PURPOSE:To make an optical fiber hard to come out of a groove and to improve the tension characteristics of a cable by specifying the conditions of the sectional shape of the groove at an inversion part. CONSTITUTION:The path of an optical fiber 10 is shorter when the path passes the bottom 18 of the groove 14 before and behind the inversion part and passes the bottom 18 at the inversion part 16 than when it passes the bottom 18 of the groove 14 before and behind the inversion part 16 and passes a position other than the bottom 18 at the inversion part 16. Therefore, the path FGH of the optical fiber 10 which passes the bottom 18 of the groove 14 and the path FJH passing an opening part 20 at the inversion part 16 are nearly superposed on over the other when a slot 12 is seen from just beside. A position J is above G at C of the inversion part 16, so the path FJH is longer than the GFH. Consequently, even if tension operates, the optical fiber 10 in the FGH at the bottom 18 of the groove 14 never moves toward a side wall 23 are the long path FJH and the optical fiber 10 does not comes out of the groove 14.

67. 发明专利

JPH01170907A TENSION MEMBER FOR OPTICAL FIBER CABLE 失效
公开(公告)号：JPH01170907A
公开(公告)日：1989-07-06
申请号：JP32908987
申请日：1987-12-25
申请人： FUJIKURA LTD
发明人： KOJIMA OSAMU , SAWANO HIROYUKI , ISHII HIROSHI , OKADA NAOKI
IPC分类号： G02B6/44
摘要： PURPOSE:To decrease the amt. of hydrogen to be generated and to prevent deterioration of an optical fiber by doubling and twisting plural pieces of split strands made of metal while bringing the adjacent split strands into close contact with each other. CONSTITUTION:A tension member M1 is constituted by disposing the circular split strand 1 made of the metal at the center and doubling and twisting the outer-layer split strands 2... made of the metal having a sectorial shape closely around the central strand. The contact area between the respective strands 1, 2... is taken extremely large. Since the contact area between the strand metals in such optical fiber cable is large, sliding corrosion, i.e., the oxidation of the metal is effectively prevented and the amt. of the hydrogen to be generated is decreased. The deterioration of the optical fiber is thereby prevented.

68. 发明专利

JP2017093121A 凍結障害防止管および光ファイバケーブル埋設構造审中-公开
公开(公告)号：JP2017093121A
公开(公告)日：2017-05-25
申请号：JP2015219515
申请日：2015-11-09
申请人：株式会社フジクラ , Fujikura Ltd , 日本電信電話株式会社 , Nippon Telegr & Teleph Corp
发明人： ITO NAOTO , OSATO TAKESHI , YAMANAKA MASAYOSHI , OKADA NAOKI , AOYANAGI YUJI , NAKAGAWA NAOKI , ENDO YOHEI , SHIBATA MASAHIKO , HAMAGUCHI MASAYA
IPC分类号： H02G9/06 , G02B6/50
摘要：【課題】凍結と解凍を繰り返した後であっても光ファイバケーブルを十分に保護できる凍結障害防止管を提供する。【解決手段】埋設管の内部に光ファイバケーブルとともに併設される凍結障害防止管であって、管外周面から管内周面に貫通する微細孔が設けられている。また、前記管内周面に撥水性が付与されていてもよい。また、撥水性の付与は、前記管内周面に形成された凹凸面のロータス効果によるものであってもよい。加えて、前記管内周面に撥水性被膜が形成されていてもよい。【選択図】図5

69. 发明专利

JP2015004906A 光ファイバケーブル审中-公开
标题翻译：光纤电缆
公开(公告)号：JP2015004906A
公开(公告)日：2015-01-08
申请号：JP2013131376
申请日：2013-06-24
申请人：株式会社フジクラ , Fujikura Ltd
发明人： KUDO YOSHIHITO , ONO MASASHI , SHIOBARA SATORU , OKADA NAOKI
IPC分类号： G02B6/44
摘要：【課題】中間分岐作業及びケーブル同士の接続を容易に行うことができ、伝送損失の増加を抑制することが可能な細径の光ファイバケーブルを提供する。【解決手段】 3以上の複数の素線、複数の素線の延伸方向において、複数の素線の中の互いに隣接する一対の素線を間欠的に連結し、且つ、一対の素線の連結位置に対して延伸方向に離間した位置で、互いに隣接する他の一対の素線を間欠的に連結する複数の連結部を有し、延伸方向に撚り合わされたテープ心線10a〜10fと、延伸方向に垂直に切った断面において、テープ心線10a〜10fを挟んで互に対向して配置された一対の抗張力体3と、一対の抗張力体3の間にテープ心線10a〜10fを内部に収納するスロット8を有し、一対の抗張力体3の対向方向に直交する方向の一側の外面において、対向方向でのスロット8の両端の外側に対応する位置に設けられた一対のノッチ9a、9bを有するシース6とを備える。【選択図】図1
摘要翻译：要解决的问题：提供一种能够容易地执行中间分支工作和电缆到电缆连接的小直径光缆，并且能够抑制传输损耗的增加。解决方案：光纤电缆包括：光纤带10a -10f，以伸长方向绞合，用于在三个或更多个多元素纤维的伸长方向上间隔地连接多个元件纤维彼此相邻的一对元件纤维，并且在沿着伸长方向离开的位置处所述一对元件光纤的连接位置，用于间歇地连接另一对相互相邻的元件光纤的多个连接部件; 在垂直于伸长方向切割的截面中，沿着光纤带10a-10f彼此面对的一对张力构件3; 以及护套6，其具有用于在其中容纳在一对张力构件3之间的光纤带10a-10f的槽8，并且具有一对槽口9a，9b，所述一对槽口9a，9b设置在相对于两侧的外部的相对方向的位置一个外表面上的狭槽8在与一对张紧构件3的相对方向正交的方向上。

70. 发明专利

JP2015004766A 光ファイバケーブル及び光ファイバケーブルの製造方法审中-公开
标题翻译：光纤电缆及其制造方法
公开(公告)号：JP2015004766A
公开(公告)日：2015-01-08
申请号：JP2013129222
申请日：2013-06-20
申请人：株式会社フジクラ , Fujikura Ltd
发明人： MATSUZAWA TAKASHI , SHIOBARA SATORU , OKADA NAOKI
IPC分类号： G02B6/44
摘要：【課題】レングスマークの視認性をよくすることができ、支持線部のケーブル長を少ない誤差で管理することができる光ファイバケーブルを提供する。【解決手段】ケーブル部10は、支持線部20に対して弛んでいる状態で、支持線部20の長手方向に間欠的に形成された首部31で連結されている。ケーブル部10には、支持線部20のそれぞれの位置におけるケーブル長を示すレングスマーク51が付されている。支持線部20には、レングスマーク51に対応する位置に、ケーブル部10にレングスマーク51が付されていることを示す識別マーク52が付されている。【選択図】図2
摘要翻译：要解决的问题：提供一种可以提高长度标记的可视性并且以较少的误差来控制支撑线部分的电缆长度的光纤电缆。解决方案：电缆部分10连接到颈部31，其间隔地形成在纵向上相对于支撑线部分20处于松动状态的支撑线部分20的方向。每个在支撑线部分上的位置上指示电缆长度的长度标记51设置在电缆部分10上。在支撑线部分如图20所示，指示长度标记51的存在的识别标记52在对应于长度标记51的位置处设置在电缆部件10上。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式