专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JP2000241683A FEEDER LINE COMPOSITE OPTICAL FIBER CABLE 失效
公开(公告)号：JP2000241683A
公开(公告)日：2000-09-08
申请号：JP4068299
申请日：1999-02-18
申请人： FUJIKURA LTD , NIPPON TELEGRAPH & TELEPHONE , SUMITOMO ELECTRIC INDUSTRIES , FURUKAWA ELECTRIC CO LTD
发明人： KOBAYASHI KAZUNAGA , SAITO SHIN , MOGI AKIO , MIYAMOTO SUEHIRO , ANDO KIMIO , MURAKAMI TAIJI , SUETSUGU YOSHIYUKI , HARA MASAMI
IPC分类号： H01B11/22 , G02B6/44
摘要： PROBLEM TO BE SOLVED: To provide a composite optical fiber cable with a feeder line requiring no securing of electric power when an ONU(optical network unit) is disposed, and capable of setting the ONU in an optional site. SOLUTION: This fiber cable is constituted by assembling collectively feeder lines 26 each of which is provided with a coating layer on conductor lines 23, 23, and optical units 30, on an outer circumference of a tension member 22, 0.2% proof-stress of the conductor line 23 is 7-50 kg/mm2 and its outside diameter is 0.8-3 mm.

2. 发明专利

JP2000215743A COMPOSITE CABLE 失效
公开(公告)号：JP2000215743A
公开(公告)日：2000-08-04
申请号：JP1538899
申请日：1999-01-25
申请人： SUMITOMO ELECTRIC INDUSTRIES , NIPPON TELEGRAPH & TELEPHONE , FURUKAWA ELECTRIC CO LTD , FUJIKURA LTD
发明人： SAKABE ITARU , KATSURAJIMA WATARU , UJIIE SEIGO , ANDO KIMIO , MURAKAMI TAIJI , HARA MASAMI , KOBAYASHI KAZUNAGA
IPC分类号： H01B7/00 , G02B6/44 , H01B7/18 , H01B11/22
摘要： PROBLEM TO BE SOLVED: To provide a composite cable capable of securely taking out a plurality of conductors and an optical fiber housed therein, and having excellent transmission characteristics. SOLUTION: This composite cable 10 is structured by coated conductors 13 respectively coated, and envelope 16 provided in a periphery of the coated conductors 13 so as not to adhere thereto, an optical fiber 11 and a tensile member 12 adjacent to each other buried in the envelop 16. This structure improves the operability because external force is prevented from applying to the optical fiber 11 when taking out the coated conductors 13. A notch applied to the optical fiber and the coated conductors further improves the workability.

3. 发明专利

JPH11183766A OPTICAL FIBER CABLE 失效
公开(公告)号：JPH11183766A
公开(公告)日：1999-07-09
申请号：JP34963397
申请日：1997-12-18
申请人： FURUKAWA ELECTRIC CO LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： IWAKURA DAISUKE , HARA MASAMI , KAMIKURA YASUHIRO , IWATA HIDEYUKI
IPC分类号： G02B6/44
摘要： PROBLEM TO BE SOLVED: To much improve an effect for mitigating distortion imparted to a coated optical fiber ribbon by making the inclination of the coated optical fiber ribbon, from the bottom of groove of the tape surface, a specified angle. SOLUTION: A spacer with groove 1 has a tension member 2 in the center and a SZ spiral shaped groove 3 whose spiral direction is periodically inverted on the outer periphery. The SZ spiral shaped groove 3 houses the coated optical fiber ribbon 4 in the state that five ribbons are laminated. An angle being made between the tape surface of the coated optical fiber ribbon 4 and the bottom of groove becomes 0 deg. in the middle part C between the inverted parts but the tilt angle κ of the tape surface of the coated optical fiber ribbon 4 to the bottom of groove falls within the range of 97-138 deg.. Consequently, since the distortion of the coated optical fiber ribbon 4 is suppressed to be small, the optical fiber cable having a small transmission loss is obtained.

4. 发明专利

JPH0611634A SMALL-DIAMETER COATED OPTICAL FIBER 失效
公开(公告)号：JPH0611634A
公开(公告)日：1994-01-21
申请号：JP19016692
申请日：1992-06-25
申请人： FURUKAWA ELECTRIC CO LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： HARA MASAMI , OKAGAWA SHUJI , OTAKE AKIHIRO , TOMITA SHIGERU
IPC分类号： G02B6/44
摘要： PURPOSE:To obtain the small-diameter coated optical fiber which is sufficiently smaller in the outside diameter of coatings than heretofore and have a good side pressure characteristic by specifying the ratio of the thickness of the inside layer coating and the thickness of the outside layer coating. CONSTITUTION:The ratio (dp/ds) of the thickness dp of the inside layer coating and the thickness ds of the outside layer coating of the small-diameter coated optical fiber of 1.1. A resin having >=150kgf/ mm Young's modulus is preferably used as the outside layer coating material. For example, the transmission loss Y to the (dp/ds) at 1.55mum wavelength for the single mode coated optical fiber of 200mum outside diameter with various Young's modulus Es of the outside layer coating are measured when they are made into a bundled state or wound on the bobbin by tension. The results are such that the increase in the loss Y by the side pressure drastically decreases when the dp/ds is larger than 1.1.

5. 发明专利

JPH0560954A FINE DIAMETER OPTICAL FIBER 失效
公开(公告)号：JPH0560954A
公开(公告)日：1993-03-12
申请号：JP35183591
申请日：1991-12-16
申请人： FURUKAWA ELECTRIC CO LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： HARA MASAMI , KAWADA YUKIHIRO , MAEDA KEIGO , OKAGAWA SHUJI , OTAKE AKIHIRO , TOMITA SHIGERU
IPC分类号： G02B6/44
摘要： PURPOSE:To obtain a fine diameter optical fiber having sufficient mechanical strength and little in increase of transmission loss caused by lateral pressure. CONSTITUTION:In the fine diameter optical fiber having ) and area of cross section of the outer covering layer S (mm ) is used for the outer covering layer.

6. 发明专利

JP2003161867A OPTICAL FIBER CABLE 审中-公开
公开(公告)号：JP2003161867A
公开(公告)日：2003-06-06
申请号：JP2001361310
申请日：2001-11-27
申请人： FURUKAWA ELECTRIC CO LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： HATTORI YOSHINORI , HARA MASAMI , ANDO KIMIO
IPC分类号： G02B6/44 , H01B11/00
摘要： PROBLEM TO BE SOLVED: To provide an optical fiber cable of a small diameter which is used as a vertical-system trunk line local cable or a subscriber line thin cable, capable of providing a structure with a support line, and allows various modes of use depending on installation condition. SOLUTION: Related to an optical fiber cable (1), an optical fiber unit part (3) in which a plurality of single-core optical fibers (2) are twisted together and integrated in a thermo-setting silicone resin, and a tensile strength body (4) are disposed side by side on the same plane, which is collectively coated with a coating layer (5) of a thermo-plastic resin. COPYRIGHT: (C)2003,JPO

7. 发明专利

JP2000171673A OPTICAL FIBER CABLE 失效
公开(公告)号：JP2000171673A
公开(公告)日：2000-06-23
申请号：JP34992398
申请日：1998-12-09
申请人： SUMITOMO ELECTRIC INDUSTRIES , NIPPON TELEGRAPH & TELEPHONE , FURUKAWA ELECTRIC CO LTD , FUJIKURA LTD
发明人： WATABE MASAKAZU , UJIIE SEIGO , NIIYAMA SHINSUKE , SERA YUJI , SHINO KOJI , HARA MASAMI , KUSAKARI MASAHIRO
IPC分类号： G02B6/44
摘要： PROBLEM TO BE SOLVED: To provide an optical fiber cable capable of preventing the occurrence of a loss increase and disconnection by the occurrence of the shrinkage and meandering of a coating when squeezing and bending are imparted thereto in the optical fiber cable formed by integrally coating a coated optical fiber 1 and tension members with a thermoplastic resin. SOLUTION: The tension members 2 are arranged on both sides of the coated optical fiber 1 and the coating 3 is applied integrally thereto. Adhesive layers 5 are interposed between the tension members and the coating. The adhesiveness of the tension members and the coating may be enhanced by interposing the adhesive layers therebetween, by which the shrinkage and meandering of the coating may be suppressed.

8. 发明专利

JP2000131578A OPTICAL FIBER CABLE 失效
公开(公告)号：JP2000131578A
公开(公告)日：2000-05-12
申请号：JP30481898
申请日：1998-10-27
申请人： FURUKAWA ELECTRIC CO LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： IWAKURA DAISUKE , TAKEDA YOSHITERU , HARA MASAMI , IWATA HIDEYUKI
IPC分类号： G02B6/44
摘要： PROBLEM TO BE SOLVED: To make it possible to easily secure watertightness in the introducing part to a closure while securing a low friction at the time of laying by providing the surface of sheaths with a ruggedness. SOLUTION: The sheaths to be formed on the outer periphery of a core part in which coated optical fibers 4 are housed are formed in multiple layers like the inner sheath 5 and the outer sheath 6. The surface of the inner sheath 5 is smoothed and the outer sheath 6 is provided with a ruggedness by forming projecting lines 7, etc., on its outside surface. In addition, the Young's modulus of the outer sheath 6 is made larger than the Young's modulus of the inner sheath 5, thereby, the separation of the inner sheath 5 and the outer sheath 6 is made easy and the damage resistance on the outside surface of the cable and the flexibility of the cable at the time of laying are secured. The outer sheath 6 is stripped to expose the inner sheath 5 having the smooth surface while the low friction at the time of laying is assured by the ruggedness on the outside surface of the outer sheath 6, to secure the watertightness in the introducing part of the closure.

9. 发明专利

JPH10115752A OPTICAL FIBER UNIT 失效
公开(公告)号：JPH10115752A
公开(公告)日：1998-05-06
申请号：JP26991196
申请日：1996-10-11
申请人： FURUKAWA ELECTRIC CO LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： HARA MASAMI , SASAKI ATSUSHI , HOKARI KAZUO , FURUKAWA SHINICHI
IPC分类号： G02B6/44
摘要： PROBLEM TO BE SOLVED: To make it possible to drastically lessen the shrinkage of a buffer layer under a low-temp. environment and to suppress the increase of transmission loss in use at a low temp. by forming the buffer layer of a fiber layer exhibiting low shrinkability at a low temp. area. SOLUTION: This optical fiber cable 1 has a coated optical fiber 2, the buffer layer 3 covering the outer peripheral surface of this coated optical fiber 2 and an outer coating 4 covering the outer peripheral surface of the buffer layer 3. The buffer layer 3 is formed by using fibers which exhibit low shrinkability in a low-temp. area so as not to act the bending stress by shrinkage on the coated optical fiber 2 even if the optical fiber cable 1 is laid under the low-temp. environment. Aramid fibers having the low shrinkage particularly by a temp. change and high strength are preferably used as the material having such properties. The production thereof is executed by passing the coated optical fiber 2 through an extruder while placing the fibers constituting the buffer layer 3 along its longitudinal direction on the circumference thereof and extruding polyethylene(PE) to the circumference of the buffer layer 3, thereby coating the buffer layer. The PE is then foamed and cured.

10. 发明专利

JPH05215640A METHOD FOR SCREENING COATED OPTICAL FIBER 失效
公开(公告)号：JPH05215640A
公开(公告)日：1993-08-24
申请号：JP5616392
申请日：1992-02-05
申请人： FURUKAWA ELECTRIC CO LTD , NIPPON TELEGRAPH & TELEPHONE
发明人： KOBAYASHI HIROYUKI , HARA MASAMI , OKAGAWA SHUJI , OTAKE AKIHIRO , TOMITA SHIGERU
IPC分类号： G01M11/00
摘要： PURPOSE:To prevent the coating film of an optical fiber to be subjected to screening tests from being stripped off or damaged by constituting the surface of a reel with which the coated optical fiber is brought into contact while tension is applied to the optical fiber of a material having a Young's modulus which is lower than a specific value. CONSTITUTION:In the title screening method in which prescribed tension is added to a coated optical fiber which is run between a pair of reels, the hardness (Young's modulus) of reels 5A and 5B for screening and a guide reel 4 largely affect the stripping off or crashing of the coating film of the fiber 1. Therefore, the surfaces of the reels 4, 5A, and 5B with which the fiber 1 are brought into contact while tension is applied to the fiber 1 are constituted of a material having a Young's modulus which is equal to or lower than 1,000kg/mm . As a result, even when the coated optical fiber 1 is brought into contact with one of the reels while a tension load is applied to the fiber l, the coating film of the fiber 1 is hardly stripped off or crashed, because the Young's modulus of the surface of the reel is relatively small, being equal to or lower than 1,000kg/cm .

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