Patents by Inventor Naoki Katagiyama

Naoki Katagiyama 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).

  • Publication number: 20120321252
    Abstract: In an optical connector, end faces of a pair of ferrules that hold multiple optical fibers are positioned with two guide pins and butted against each other to connect the optical fibers in the pair of ferrules. The optical connector is provided with an urging member for pushing the end faces against each other. The end faces are ground at an angle. The gap between the guide pins and guide holes, which open at the end faces and into which the guide pins are fitted, is larger than 0.004 mm and smaller than or equal to 0.008 mm. Powder caused by the friction generated when the guide pins are inserted and fitted into the guide holes is greatly reduced. Connection loss does not increase even when frequent connection and disconnection are performed, and cleaning the connector becomes unnecessary.
    Type: Application
    Filed: March 9, 2012
    Publication date: December 20, 2012
    Applicants: Hitachi Cable, Ltd., Japan Aviation Electronics Industry, Limited
    Inventors: Yuichi Koreeda, Naoki Katagiyama, Yoshikazu Namekawa, Yoshinori Kurosawa, Seiji Kojima
  • Patent number: 8297853
    Abstract: An optical connector device has a first connector including a ferrule for holding an optical fiber and a guide portion projecting longer than the ferrule. The optical connector device also has a second connector for receiving an end of the ferrule along an optical axis of the optical fiber. The second connector includes a receiver for receiving the guide portion and a shutter having a cover part. The shutter is movable between a cover position at which the optical axis intersects the cover part and an open position at which the optical axis does not intersect the cover part. The guide portion is operable to move the shutter from the cover position to the open position when the guide portion is received into the receiver.
    Type: Grant
    Filed: May 18, 2010
    Date of Patent: October 30, 2012
    Assignee: Japan Aviation Electronics Industry, Limited
    Inventors: Naoki Katagiyama, Hideto Shimazu, Takeo Toda, Yasutaka Hiroki
  • Publication number: 20120141072
    Abstract: An optical connector has a pair of coil springs (30) which are disposed so as to sandwich an optical fiber (50) led out of the rear of a ferrule (20) in substantially the axial direction (A) and which extend in the axial direction (A).
    Type: Application
    Filed: May 17, 2010
    Publication date: June 7, 2012
    Applicant: JAPAN AVIATION ELECTRONICS INDUSTRY, LIMITED
    Inventors: Naoki Katagiyama, Yuichi Koreeda, Hisaya Takahashi, Mikio Oda, Hideyuki Ono
  • Publication number: 20120128302
    Abstract: Optical connectors can be easily attached to and detached from a housing. An optical connector device 11 adapted to be connected to a mating optical connector device 81 includes a first housing 31 for receiving and holding optical connectors 61, a second housing 41 for holding the first housing 31 in a floating manner, and a fixing member 51 for fixedly attaching the second housing 41 to an attachment object 201. To-be-locked portions 35, 37 of the first housing 31 and locking portions 43, 44 of the second housing 41 detachably engage with each other and cause the first housing 31 to engage with the second housing 41 in a floating manner. The to-be-locked portions 35, 37 and the locking portions 43, 44 engage with each other in a direction perpendicular to a direction A1 of connection to the mating optical connector device 81.
    Type: Application
    Filed: April 20, 2010
    Publication date: May 24, 2012
    Applicant: JAPAN AVIATION ELECTRONICS INDUSTRY, LIMITED
    Inventors: Naoki Katagiyama, Yuichi Koreeda, Hisaya Takahashi, Mikio Oda, Hideyuki Ono
  • Patent number: 8177575
    Abstract: A connector assembly includes a first connector and a second connector. The second connector has a receptacle portion configured to receive a mating portion of the first connector, a lock key, and a biasing member. The lock key has a pushed portion and is received in the receptacle portion so as to be movable between a locking position and an unlocking position. The biasing member is configured to bias the lock key toward the locking position. The mating portion of the first connector has a positioning key having a pusher and a locking portion. When the first connector is inserted along the insertion direction, the pushed portion is pushed by the pusher, so that the lock key is temporarily moved to the unlocking position and then moved to the locking position. Thus, a mating state of the first connector and the second connector is locked.
    Type: Grant
    Filed: July 20, 2010
    Date of Patent: May 15, 2012
    Assignee: Japan Aviation Electronics Industry, Limited
    Inventors: Naoki Katagiyama, Hideto Shimazu
  • Patent number: 8047725
    Abstract: In an optical connector adapter for use in connecting a first and a second optical connector plug to each other, a second adapter half is butted against a first adapter half in a predetermined direction. The first and second adapter halves have engaging means for maintaining the first and second adapter halves in a butted state in the predetermined direction. The engaging means is configured to be disposed inside the optical connector adapter and to be prevented from releasing engagement thereof by at least one of the first and second optical connector plugs.
    Type: Grant
    Filed: July 6, 2009
    Date of Patent: November 1, 2011
    Assignees: Japan Aviation Electronics Industry, Limited, NEC Corporation
    Inventors: Naoki Katagiyama, Yuichi Koreeda, Hikaru Kouta, Hisaya Takahashi, Mikio Oda, Hideyuki Ono
  • Publication number: 20110211792
    Abstract: A stopper 50 is fixed to an optical connector 10, and the optical connector 10 is accommodated in an opening section 21 of a housing 20. The housing 20 is engaged with the stopper 50 so as to be displaceable with respect to the stopper 50 by a predetermined amount in a direction of inserting the optical connector 10 to a receptacle, and the stopper 50 is biased rearward by a coil spring 40 with respect to the housing 20. The free end of a clip piece 15 is placed on the free end of a latch piece 14 of the optical connector 10, and the free end of the clip piece 15 is placed on an inclination surface 23a at the front end of a concave section 23 formed on an inner wall surface of the opening section 21. At the time of detachment from the receptacle, the housing 20 is displaced in a direction to be pulled out against the biasing force of the coil spring 40. Accordingly, the clip piece 15 and the latch piece 14 are pushed down by the inclination surface 23a to release the lock of the latch piece 14.
    Type: Application
    Filed: January 25, 2011
    Publication date: September 1, 2011
    Applicant: Japan Aviation Electronics Industry Limited
    Inventors: Yuichi Koreeda, Naoki Katagiyama, Yasutaka Hiroki
  • Publication number: 20110158586
    Abstract: Provided is an optical connector adapter of the type in which a shell-side hollow cylindrical portion is integrally formed in a shell, a sleeve holder inserted in the shell has a holder-side hollow cylindrical portion, and a sleeve is held by the shell-side cylindrical portion and the holder-side cylindrical portion. The shell has an inward engaging projection on the inner periphery thereof at its portions facing the holder-side cylindrical portion while the sleeve holder has a holder locking portion. By engaging the holder locking portion with the engaging projection, the sleeve holder is prevented from being removed from the shell. The optical connector adapter is attached to a housing so as to pass through its wall such that the shell-side cylindrical portion is located outside the housing while the holder-side cylindrical portion is located inside the housing.
    Type: Application
    Filed: November 9, 2010
    Publication date: June 30, 2011
    Applicant: Japan Aviation Electronics Industry, Limited
    Inventors: Naoki Katagiyama, Yuichi Koreeda
  • Publication number: 20110123156
    Abstract: [Problems to be solved] To provide an optical adapter which has a reduced number of component parts and can be easily assembled. [Means for Solution] The optical adapter comprises a first housing 3, a second housing 5, and a sleeve 7. The first housing 3 comprises a connector holding part 31, a first holder portion 33, an alignment part 35, and coupling portions 36. The first holder portion 33 is integrally formed with the connector holding part 31. The alignment part 35 comprises an alignment part main body 351, a second holder portion 352 integrally formed with the alignment part main body 351, and a plurality of guide portions 352, 354, and 355, integrally formed with the alignment part main body 351. Protrusion-shaped coupling portions 36 for coupling the connector holding part 31 and the alignment part 35 are integrally formed with one of the connector holding part 31 and the alignment part main body 35.
    Type: Application
    Filed: April 1, 2009
    Publication date: May 26, 2011
    Applicant: Japan Aviation Electronics Industry, Limited
    Inventors: Yuichi Koreeda, Yasutaka Hiroki, Naoki Katagiyama
  • Publication number: 20110081798
    Abstract: An adapter system has a standard adapter configured to couple two first type connectors with each other, and an interface converter configured to be attached to the standard adapter. Each of the first type connectors has a first connection end. The first connection end is formed with two engaged portions. The standard adapter has two first openings on opposite sides thereof in a first direction and two engaging portions within each of the first openings. The first opening has a first interface for the first connection end. The two engaged portions of the first type connector oppose with each other in a second direction perpendicular to the first direction. The two engaged portions of the first type connector is engaged with the engaging portions of the first opening, so that the standard adapter retains the first connection end when the first type connector is inserted in the first opening.
    Type: Application
    Filed: August 10, 2010
    Publication date: April 7, 2011
    Applicant: JAPAN AVIATION ELECTRONICS INDUSTRY, LIMITED
    Inventors: Yuichi Koreeda, Osamu Hashiguchi, Naoki Katagiyama
  • Publication number: 20110075974
    Abstract: An optical connector is selectively attachable to one of optical fiber cables including a first type optical fiber cable and a second type optical fiber cable. Each of the optical fiber cables includes a common optical fiber and a common ferrule fixed to the common optical fiber. The first type optical fiber cable further includes a tension member. The second type optical fiber cable further including a tensile member. The optical connector has a swage portion through which the common ferrule is inserted forward when one of the optical fiber cables is attached to the optical connector. The swage portion has an outer surface on which the tensile member is swaged when the second type optical fiber cable is attached to the optical connector. The optical connector also has a fixing portion having at least one receiver hole formed therein for receiving and fixing an end of the tension member of the first type optical fiber cable. The fixing portion is located forward of the swage portion.
    Type: Application
    Filed: September 14, 2010
    Publication date: March 31, 2011
    Applicant: Japan Aviation Electronics Industry, Limited
    Inventors: Naoki Katagiyama, Hideto Shimazu, Yuichi Koreeda, Takeo Toda, Hideo Sugimoto, Yasutaka Hiroki
  • Publication number: 20110021057
    Abstract: A connector assembly includes a first connector and a second connector. The second connector has a receptacle portion configured to receive a mating portion of the first connector, a lock key, and a biasing member. The lock key has a pushed portion and is received in the receptacle portion so as to be movable between a locking position and an unlocking position. The biasing member is configured to bias the lock key toward the locking position. The mating portion of the first connector has a positioning key having a pusher and a locking portion. When the first connector is inserted along the insertion direction, the pushed portion is pushed by the pusher, so that the lock key is temporarily moved to the unlocking position and then moved to the locking position. Thus, a mating state of the first connector and the second connector is locked.
    Type: Application
    Filed: July 20, 2010
    Publication date: January 27, 2011
    Applicant: Japan Aviation Electronics Industry, Limited
    Inventors: Naoki Katagiyama, Hideto Shimazu
  • Publication number: 20100303417
    Abstract: An optical connector device has a first connector including a ferrule for holding an optical fiber and a guide portion projecting longer than the ferrule. The optical connector device also has a second connector for receiving an end of the ferrule along an optical axis of the optical fiber. The second connector includes a receiver for receiving the guide portion and a shutter having a cover part. The shutter is movable between a cover position at which the optical axis intersects the cover part and an open position at which the optical axis does not intersect the cover part. The guide portion is operable to move the shutter from the cover position to the open position when the guide portion is received into the receiver.
    Type: Application
    Filed: May 18, 2010
    Publication date: December 2, 2010
    Applicant: Japan Aviation Electronics Industry, Limited
    Inventors: Naoki Katagiyama, Hideto Shimazu, Takeo Toda, Yasutaka Hiroki
  • Publication number: 20100296778
    Abstract: An optical connector which enables an operator to easily remove a ferrule from a housing without using a special jig by himself alone. A supporting member that is mounted in a housing in a manner capable of being inserted and removed in a state in which the ferrule is held therein, includes a supporting member main body which is accommodated in the housing, and an operating portion which temporarily releases an engagement between protrusions formed on the supporting member main body and through holes formed in the housing. The operating portion is arranged in a manner protruding outside the housing when the supporting member is mounted in the housing.
    Type: Application
    Filed: May 4, 2010
    Publication date: November 25, 2010
    Applicant: Japan Aviation Electronics Industry, Limited
    Inventors: Naoki KATAGIYAMA, Hideto SHIMAZU, Hideo SUGIMOTO
  • Publication number: 20100239213
    Abstract: An optical connector in which a seal member is difficult to be damaged during assembly. A seal member-accommodating portion that accommodates the seal member in a compressed state is formed as an intermediate portion of a through hole of a housing. When an insertion member is inserted into the through hole, an insertion portion of the insertion member presses the seal member into the seal member-accommodating portion.
    Type: Application
    Filed: March 18, 2010
    Publication date: September 23, 2010
    Applicant: Japan Aviation Electronics Industry, Limited
    Inventors: Naoki Katagiyama, Hideto Shimazu, Yuichi Koreeda, Takeo Toda
  • Patent number: 7720345
    Abstract: An assembling jig for assembling an optical connector is provided. The optical connector has a pair of beam portions having elasticity and adapted to hold a ferrule holding an optical fiber. The assembling jig includes a body portion, an optical connector receiving portion movably held by the body portion and adapted to receive the optical connector, a ferrule receiving portion movably held by the body portion and adapted to receive the ferrule, and an abutting portion adapted to abut the pair of beam portions to open the pair of beam portions outward.
    Type: Grant
    Filed: September 23, 2008
    Date of Patent: May 18, 2010
    Assignee: Japan Aviation Electronics Industry, Limited
    Inventors: Naoki Katagiyama, Makoto Sanguu, Kazuhiro Aihara, Hiroshii Yamamoto
  • Publication number: 20100002999
    Abstract: In an optical connector adapter for use in connecting a first and a second optical connector plug to each other, a second adapter half is butted against a first adapter half in a predetermined direction. The first and second adapter halves have engaging means for maintaining the first and second adapter halves in a butted state in the predetermined direction. The engaging means is configured to be disposed inside the optical connector adapter and to be prevented from releasing engagement thereof by at least one of the first and second optical connector plugs.
    Type: Application
    Filed: July 6, 2009
    Publication date: January 7, 2010
    Inventors: Naoki Katagiyama, Yuichi Koreeda, Hikaru Kouta, Hisaya Takahashi, Mikio Oda, Hideyuki Ono
  • Patent number: 7625130
    Abstract: An optical component is improved in workability during assembly operation thereof and makes it possible to easily position an optical fiber. A first ferrule is press-fitted into one end of a central hole of a connecting member, and a second ferrule is press-fitted into the other end of the central hole of the connecting member. An optical fiber is inserted through the first and second ferrules. A coating which coats an intermediate portion of the optical fiber of an optical fiber cord is accommodated in a communicating portion of the central hole of the connecting member in a manner such that the coating is brought into abutment with the first and second ferrules.
    Type: Grant
    Filed: June 25, 2008
    Date of Patent: December 1, 2009
    Assignee: Japan Aviation Electronics Industry Limited
    Inventors: Yasutaka Hiroki, Yuichi Koreeda, Naoki Katagiyama
  • Publication number: 20090116794
    Abstract: An assembling jig for assembling an optical connector is provided. The optical connector has a pair of beam portions having elasticity and adapted to hold a ferrule holding an optical fiber. The assembling jig includes a body portion, an optical connector receiving portion movably held by the body portion and adapted to receive the optical connector, a ferrule receiving portion movably held by the body portion and adapted to receive the ferrule, and an abutting portion adapted to abut the pair of beam portions to open the pair of beam portions outward.
    Type: Application
    Filed: September 23, 2008
    Publication date: May 7, 2009
    Inventors: Naoki Katagiyama, Makoto Sanguu, Kazuhiro Aihara, Hiroshii Yamamoto
  • Patent number: 7507032
    Abstract: In an optical connection component for use in connecting a connection object having a key formed on one side surface thereof, a housing for fitting over the connection object is formed around an optical axis. A shutter member is coupled to the housing and includes a light shielding portion which is elastically deformable and extends across the optical axis. The housing includes a key groove portion for receiving the key and an escape groove portion adapted to receive the light shielding potion in an elastically deformed state.
    Type: Grant
    Filed: June 26, 2007
    Date of Patent: March 24, 2009
    Assignee: Japan Aviation Industry, Limited
    Inventors: Naoki Katagiyama, Yuichi Koreeda, Yasutaka Hiroki, Akihiro Onogawa