Patents by Inventor Masanobu Toyonaga

Masanobu Toyonaga 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).

  • Patent number: 7744290
    Abstract: The optical fiber connector includes a connector housing (21), having a splice assembly (13) therein, and an end cap (5) attached to one end of the connector housing (21), from which leads out a primary coating portion (3). A boundary (4c) between a portion of the primary coating portion (3), obtained by removing an outer coating (4b) of the inner cover (4) while leaving an inner coating (4a), and a portion obtained by leaving the outer coating (4b) of the inner cover (4), is located in the interior of the connector housing (21). The end cap (5) is provided in the interior thereof with a tubular portion and an extension extending from an end of the tubular portion, the tubular portion including an insert hole for an insertion of the primary coating portion (3) approximately coaxially with a guiding hole formed in the splice assembly accommodated in the connector housing (21) for guiding the primary coating portion (3) leading out from the splice assembly.
    Type: Grant
    Filed: October 30, 2006
    Date of Patent: June 29, 2010
    Assignees: 3M Innovative Properties Company, Nippon Telegraph and Telephone Corporation
    Inventors: Akihiko Yazaki, Takaya Yamauchi, Tomoyasu Oike, Masanobu Toyonaga, Kuniaki Terakawa, Hiroyuki Tanase, Tatsuya Nakajima, Masashi Awamori
  • Publication number: 20090220199
    Abstract: The optical fiber connector includes a connector housing (21), having a splice assembly (13) therein, and an end cap (5) attached to one end of the connector housing (21), from which leads out a primary coating portion (3). A boundary (4c) between a portion of the primary coating portion (3), obtained by removing an outer coating (4b) of the inner cover (4) while leaving an inner coating (4a), and a portion obtained by leaving the outer coating (4b) of the inner cover (4), is located in the interior of the connector housing (21). The end cap (5) is provided in the interior thereof with a tubular portion and an extension extending from an end of the tubular portion, the tubular portion including an insert hole for an insertion of the primary coating portion (3) approximately coaxially with a guiding hole formed in the splice assembly accommodated in the connector housing (21) for guiding the primary coating portion (3) leading out from the splice assembly.
    Type: Application
    Filed: October 30, 2006
    Publication date: September 3, 2009
    Inventors: Akihiko Yazaki, Takaya Yamauchi, Tomoyasu Oike, Masanobu Toyonaga, Kuniaki Terakawa, Hiroyuki Tanase, Tatsuya Nakajima, Masashi Awamori
  • Patent number: 7341381
    Abstract: A cantilever type latch having the fixed end on the side of exposing the terminal end surface of the optical fiber is provided on the side of the plug housing. Near the center of the upper surface of the latch, an engaging projection which is to be engaged in the engaging hole formed in the adapter or the receptacle is formed. The engaging projection has the slope which decreases the height toward the fixed end side of the latch, in which the gradient of the slope is nearly equal to or greater than the rotation angle required for the elastic deformation of the latch with the fixed end functioned as the fulcrum. Thereby easy disconnecting of the latch is implemented.
    Type: Grant
    Filed: October 27, 2006
    Date of Patent: March 11, 2008
    Assignees: The Furukawa Electric Co., Ltd, Nippon Telegraph & Telephone Corporation, Fujikura Ltd., Sumitomo Electric Industries, Ltd.
    Inventors: Naoko Shimoji, Masato Shiino, Masanobu Toyonaga, Kuniaki Terakawa, Hiroyuki Tanase, Tatsuya Nakajima, Masashi Awamori, Kazuhiro Takizawa, Daigo Saitoh, Kenichiro Ohtsuka, Daizo Nishioka, Masahiro Hamada
  • Publication number: 20070098329
    Abstract: A cantilever type latch having the fixed end on the side of exposing the terminal end surface of the optical fiber is provided on the side of the plug housing. Near the center of the upper surface of the latch, an engaging projection which is to be engaged in the engaging hole formed in the adapter or the receptacle is formed. The engaging projection has the slope which decreases the height toward the fixed end side of the latch, in which the gradient of the slope is nearly equal to or greater than the rotation angle required for the elastic deformation of the latch with the fixed end functioned as the fulcrum. Thereby easy disconnecting of the latch is implemented.
    Type: Application
    Filed: October 27, 2006
    Publication date: May 3, 2007
    Applicants: The Furukawa Electric Co, Ltd., Nippon Telegraph and Telephone Corporation, Fujikura Ltd., Sumitomo Electric Industries, Ltd.
    Inventors: Naoko SHIMOJI, Masato Shiino, Masanobu Toyonaga, Kuniaki Terakawa, Hiroyuki Tanase, Tatsuya Nakajima, Masashi Awamori, Kazuhiro Takizawa, Daigo Saitoh, Kenichiro Ohtsuka, Daizo Nishioka, Masahiro Hamada