Patents by Inventor Takehiko Narita
Takehiko Narita has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7542648Abstract: There is provided a holder for an optical fiber ferrule end face grinding apparatus that can make good use of a grinding film, in which the number of optical fiber ferrules held by the holder is greatly increased. The holder includes a holder plate including a plurality of insertion holes into which each of the ferrules is inserted. In the holder plate, the insertion holes are arranged in an area of a certain size extending from the center to the periphery thereof.Type: GrantFiled: March 27, 2008Date of Patent: June 2, 2009Assignee: Seikoh Giken Co., Ltd.Inventors: Kunio Yamada, Takehiko Narita
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Patent number: 7494402Abstract: A ferrule holder assembly for an optical-fiber-end-face grinding apparatus comprises a ferrule holder board supported to be moved upward and downward in parallel with a grinding board of the optical-fiber-end-face grinding apparatus, a ferrule sleeve provided at the ferrule holder board for receiving and supporting an optical fiber ferrule while putting the tip at the grinding board, an adapter for retaining the optical fiber ferrule or a connector for supporting the optical fiber ferrule in a state where the optical fiber ferrule is inserted into the ferrule sleeve, and an urging unit for urging the adapter in a direction opposite to the grinding board from the ferrule holder board.Type: GrantFiled: December 2, 2005Date of Patent: February 24, 2009Assignee: Seiko Giken Co., Ltd.Inventors: Kunio Yamada, Takehiko Narita
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Publication number: 20080212930Abstract: There is provided a holder for an optical fiber ferrule end face grinding apparatus that can make good use of a grinding film, in which the number of optical fiber ferrules held by the holder is greatly increased. The holder includes a holder plate including a plurality of insertion holes into which each of the ferrules is inserted. In the holder plate, the insertion holes are arranged in an area of a certain size extending from the center to the periphery thereof.Type: ApplicationFiled: March 27, 2008Publication date: September 4, 2008Inventors: Kunio Yamada, Takehiko Narita
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Patent number: 7369737Abstract: There is provided a holder for an optical fiber ferrule end face grinding apparatus that can make good use of a grinding film, in which the number of optical fiber ferrules held by the holder is greatly increased. The holder includes a holder plate including a plurality of insertion holes into which each of the ferrules is inserted. In the holder plate, the insertion holes are arranged in an area of a certain size extending from the center to the periphery thereof.Type: GrantFiled: January 18, 2006Date of Patent: May 6, 2008Assignee: Seikoh Giken Co., Ltd.Inventors: Kunio Yamada, Takehiko Narita
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Patent number: 7137878Abstract: A ferrule holder assembly for an optical-fiber-end-face grinding apparatus comprises a ferrule holder board supported to be moved upward and downward in parallel with a grinding board of the optical-fiber-end-face grinding apparatus, a ferrule sleeve provided at the ferrule holder board for receiving and supporting an optical fiber ferrule while putting the tip at the grinding board, an adapter for retaining the optical fiber ferrule or a connector for supporting the optical fiber ferrule in a state where the optical fiber ferrule is inserted into the ferrule sleeve, and an urging unit for urging the adapter in a direction opposite to the grinding board from the ferrule holder board.Type: GrantFiled: January 13, 2003Date of Patent: November 21, 2006Assignee: Seikoh Giken Co., Ltd.Inventors: Kunio Yamada, Takehiko Narita
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Publication number: 20060229006Abstract: A ferrule holder assembly for an optical-fiber-end-face grinding apparatus comprises a ferrule holder board supported to be moved upward and downward in parallel with a grinding board of the optical-fiber-end-face grinding apparatus, a ferrule sleeve provided at the ferrule holder board for receiving and supporting an optical fiber ferrule while putting the tip at the grinding board, an adapter for retaining the optical fiber ferrule or a connector for supporting the optical fiber ferrule in a state where the optical fiber ferrule is inserted into the ferrule sleeve, and an urging unit for urging the adapter in a direction opposite to the grinding board from the ferrule holder board.Type: ApplicationFiled: December 2, 2005Publication date: October 12, 2006Applicant: SEIKOH GIKEN Co., Ltd.Inventors: Kunio Yamada, Takehiko Narita
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Publication number: 20060193566Abstract: There is provided a holder for an optical fiber ferrule end face grinding apparatus that can make good use of a grinding film, in which the number of optical fiber ferrules held by the holder is greatly increased. The holder includes a holder plate including a plurality of insertion holes into which each of the ferrules is inserted. In the holder plate, the insertion holes are arranged in an area of a certain size extending from the center to the periphery thereof.Type: ApplicationFiled: January 18, 2006Publication date: August 31, 2006Applicant: SEIKOH GIKEN CO., LTD.Inventors: Kunio Yamada, Takehiko Narita
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Patent number: 7044651Abstract: A ferrule heating apparatus 1, which is configured to heat a ferrule and thereby adhere an optical fiber and the ferrule together, includes a plurality of ferrule housing portions capable of freely housing and aligning ferrules 27, a holder 5 made of a thermally conductive member, a holder heating unit 9 for supporting and heating the holder 5, and a temperature control unit 11 for controlling a temperature of the holder heating unit 9. The holder heating unit 9 and the temperature control unit 11 are provided mutually separately. Meanwhile, the holder heating unit 9 and the temperature unit 11 are mutually connected to each other through an electric power cable 13.Type: GrantFiled: June 25, 2003Date of Patent: May 16, 2006Assignee: Seikoh Giken Co., Ltd.Inventors: Tsuguo Satoh, Kunio Yamada, Takehiko Narita, Tatsuya Fujiwara, Yuichi Arai
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Patent number: 6808314Abstract: The center of a turntable 30 moves around the central axial line of an autoroation disk 20 along the circular orbit C of a smaller diameter than that of an autorotation disk 20. Thus, the turntable 30 revolves both around a center point O and on its own axis in accordance with an autorotation of the autorotation disk 20. A polishing holder 60 holds a connector of an optical fiber polished by a polishing film 41 arranged on the upper plane of the turntable 30. An optical fiber end face polishing machine provided with a memory 85 for storing a control program which allows a control device 80 to execute predetermined polishing steps, the control device 80 being for controlling an autorotation motor 16 of the turntable 30 and a revolution motor 14 thereof.Type: GrantFiled: August 13, 2002Date of Patent: October 26, 2004Assignee: Seikoh Giken Co. Ltd.Inventors: Kunio Yamada, Takehiko Narita, Yoshitaka Kimura, Yuichi Arai
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Publication number: 20040057674Abstract: A ferrule heating apparatus 1, which is configured to heat a ferrule and thereby adhere an optical fiber and the ferrule together, includes a plurality of ferrule housing portions capable of freely housing and aligning ferrules 27, a holder 5 made of a thermally conductive member, a holder heating unit 9 for supporting and heating the holder 5, and a temperature control unit 11 for controlling a temperature of the holder heating unit 9. The holder heating unit 9 and the temperature control unit 11 are provided mutually separately. Meanwhile, the holder heating unit 9 and the temperature unit 11 are mutually connected to each other through an electric power cable 13.Type: ApplicationFiled: June 25, 2003Publication date: March 25, 2004Applicant: SEIKOH GIKEN Co., Ltd.Inventors: Tsuguo Satoh, Kunio Yamada, Takehiko Narita, Tatsuya Fujiwara, Yuichi Arai
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Publication number: 20030104775Abstract: A ferrule holder assembly for an optical-fiber-end-face grinding apparatus comprises a ferrule holder board supported to be moved upward and downward in parallel with a grinding board of the optical-fiber-end-face grinding apparatus, a ferrule sleeve provided at the ferrule holder board for receiving and supporting an optical fiber ferrule while putting the tip at the grinding board, an adapter for retaining the optical fiber ferrule or a connector for supporting the optical fiber ferrule in a state where the optical fiber ferrule is inserted into the ferrule sleeve, and an urging unit for urging the adapter in a direction opposite to the grinding board from the ferrule holder board.Type: ApplicationFiled: January 13, 2003Publication date: June 5, 2003Inventors: Kunio Yamada, Takehiko Narita
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Patent number: 6547653Abstract: A ferrule holder assembly for an optical-fiber-end-face grinding apparatus comprises a ferrule holder board supported to be moved upward and downward in parallel with a grinding board of the optical-fiber-end-face grinding apparatus, a ferrule sleeve provided at the ferrule holder board for receiving and supporting an optical fiber ferrule while putting the tip at the grinding board, an adapter for retaining the optical fiber ferrule or a connector for supporting the optical fiber ferrule in a state where the optical fiber ferrule is inserted into the ferrule sleeve, and an urging unit for urging the adapter in a direction opposite to the grinding board from the ferrule holder board.Type: GrantFiled: December 27, 2000Date of Patent: April 15, 2003Assignee: Seikoh Giken Co., Ltd.Inventors: Kunio Yamada, Takehiko Narita
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Publication number: 20030036342Abstract: The center of a turntable 30 moves around the central axial line of an autoroation disk 20 along the circular orbit C of a smaller diameter than that of an autorotation disk 20. Thus, the turntable 30 revolves both around a center point O and on its own axis in accordance with an autorotation of the autorotation disk 20. A polishing holder 60 holds a connector of an optical fiber polished by a polishing film 41 arranged on the upper plane of the turntable 30. An optical fiber end face polishing machine provided with a memory 85 for storing a control program which allows a control device 80 to execute predetermined polishing steps, the control device 80 being for controlling an autorotation motor 16 of the turntable 30 and a revolution motor 14 thereof.Type: ApplicationFiled: August 13, 2002Publication date: February 20, 2003Applicant: Seikoh Giken Co., Ltd.Inventors: Kunio Yamada, Takehiko Narita, Yoshitaka Kimura, Yuichi Arai
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Publication number: 20020115386Abstract: The present invention provides a method of grinding an optical fiber connector such that the end faces of optical fibers to be held by the optical fiber connector extends externally from the end face of said optical fiber connector, comprising a step of grinding the end faces of the optical fibers while applying a grinding liquid containing a grinding material and alcohol onto a grinding sheet.Type: ApplicationFiled: May 24, 2001Publication date: August 22, 2002Inventors: Takashi Iijima, Akio Ishii, Katsuki Suematsu, Kunio Yamada, Takehiko Narita
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Publication number: 20010055459Abstract: A ferrule holder assembly for an optical-fiber-end-face grinding apparatus comprises a ferrule holder board supported to be moved upward and downward in parallel with a grinding board of the optical-fiber-end-face grinding apparatus, a ferrule sleeve provided at the ferrule holder board for receiving and supporting an optical fiber ferrule while putting the tip at the grinding board, an adapter for retaining the optical fiber ferrule or a connector for supporting the optical fiber ferrule in a state where the optical fiber ferrule is inserted into the ferrule sleeve, and an urging unit for urging the adapter in a direction opposite to the grinding board from the ferrule holder board.Type: ApplicationFiled: December 27, 2000Publication date: December 27, 2001Inventors: Kunio Yamada, Takehiko Narita
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Patent number: 6077154Abstract: The present invention provides a polishing apparatus for optical fiber end surface making it possible to freely adjust the contact pressure between a polishing plane and the distal end face of a ferrule and capable of preventing a defective product from being produced under polishing. A control circuit drives a vertically driving mechanism to allow a ferrule holding plate to move from a preparation state to a ferrule polishing starting state and by compressing a spring it then allows the ferrule holding plate to lower further beyond the starting state to complete the polishing.Type: GrantFiled: November 19, 1997Date of Patent: June 20, 2000Assignee: Seikoh Giken Co., Ltd.Inventors: Syuichi Takashi, Takehiko Narita
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Patent number: D510368Type: GrantFiled: May 18, 2004Date of Patent: October 4, 2005Assignee: Seikoh Giken, Do., Ltd.Inventor: Takehiko Narita
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Patent number: D565066Type: GrantFiled: July 13, 2005Date of Patent: March 25, 2008Assignee: Seikoh Giken Co., Ltd.Inventors: Kunio Yamada, Takehiko Narita