Patents by Inventor Takahisa Yoshizumi
Takahisa Yoshizumi 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: 20180228055Abstract: An electronic apparatus includes a reservoir tank that stores a liquid refrigerant, a pump, a pump-lowering parts that allows the pump to be lowered to a position that is lower than the reservoir tank, and a first flow path member that is coupled between the reservoir tank and the pump, and is flexible.Type: ApplicationFiled: January 10, 2018Publication date: August 9, 2018Applicant: FUJITSU LIMITEDInventors: Takahisa Yoshizumi, HAYAMI ABE, Akira MATSUO, Kazunori Omori
-
Patent number: 9989698Abstract: A light pipe includes a plurality of light guide units, and a connection unit that integrally connects the plurality of light guide units, the connection unit including a light interference suppression hole formed between the light guide units adjacent to each other, the light interference suppression hole including at least one surface that satisfies a total reflection condition of light entering the light interference suppression hole from the connection unit.Type: GrantFiled: October 30, 2014Date of Patent: June 5, 2018Assignee: FUJITSU LIMITEDInventors: Takahisa Yoshizumi, Chiyu Ishizuka
-
Patent number: 9739959Abstract: An optical transmission apparatus includes a substrate and a heatsink. The substrate is a substrate on which multiple light sources and a heat generating part are mounted. The heatsink includes a base portion, a fin portion, and multiple light guiding paths. The base portion is arranged on a surface of the heat generating part on an opposite side to the substrate. The fin portion rises up from a surface of the base portion on an opposite side to the heat generating part. The multiple light guiding paths are formed inside the base portion, and guide lights emitted by the multiple light sources to multiple output destinations corresponding to the multiple light sources.Type: GrantFiled: December 18, 2015Date of Patent: August 22, 2017Assignee: FUJITSU LIMITEDInventors: Kondo Masahiko, Koji Kano, Yoshiaki Tobimatsu, Takahisa Yoshizumi, Kazuya Satoh
-
Patent number: 9628182Abstract: A repeater includes: a pressure-tight casing to be arranged on seabed or in sea; and a feedthrough having a plurality of lead sections each configured to connect a circuit housed in the pressure-tight casing with a cable outside the pressure-tight casing, wherein the plurality of lead sections include at least a power wire and an electric signal wire, and at least two of the plurality of lead sections have a difference in length from each other.Type: GrantFiled: March 24, 2015Date of Patent: April 18, 2017Assignee: FUJITSU LIMITEDInventors: Naoto Hoshiyama, Takahisa Yoshizumi
-
Patent number: 9470862Abstract: An optical transmission device includes: a first cage and a second cage provided in parallel on a top surface of a substrate, into which modules connectable to an optical transmission path are inserted, respectively; a first heat sink including: a first main body arranged along surfaces of the first cage and the second cage at the opposite side to the substrate, and a first plate member rising from a bottom surface of the first main body which faces the substrate, and arranged between the first cage and the second cage.Type: GrantFiled: October 27, 2014Date of Patent: October 18, 2016Assignee: FUJITSU LIMITEDInventors: Takahisa Yoshizumi, Naoto Hoshiyama
-
Publication number: 20160202434Abstract: An optical transmission apparatus includes a substrate and a heatsink. The substrate is a substrate on which multiple light sources and a heat generating part are mounted. The heatsink includes a base portion, a fin portion, and multiple light guiding paths. The base portion is arranged on a surface of the heat generating part on an opposite side to the substrate. The fin portion rises up from a surface of the base portion on an opposite side to the heat generating part. The multiple light guiding paths are formed inside the base portion, and guide lights emitted by the multiple light sources to multiple output destinations corresponding to the multiple light sources.Type: ApplicationFiled: December 18, 2015Publication date: July 14, 2016Applicant: FUJITSU LIMITEDInventors: KONDO MASAHIKO, Koji Kano, Yoshiaki Tobimatsu, Takahisa Yoshizumi, Kazuya Satoh
-
Patent number: 9226381Abstract: A heat-transfer plate includes a pool portion configured to have a partially-depressed surface and to be loaded with thermally-conductive resin that is in contact with a heating component so as to transfer the heat from the heating component to the heat-transfer plate, a resin-amount check portion configured to have a plurality of depths and to be disposed at a position where the thermally-conductive resin is viewable in a state where the printed circuit board is fixed to the heat-transfer plate, a levee portion configured to be provided between the pool portion and the resin-amount check portion and to suppress flow of the thermally-conductive resin toward the resin-amount check portion, and a flow channel configured to be provided between the pool portion and the resin-amount check portion and to serve as a path through which the thermally-conductive resin flowing into the resin-amount check portion from the pool portion travels.Type: GrantFiled: May 22, 2014Date of Patent: December 29, 2015Assignee: FUJITSU LIMITEDInventors: Takahisa Yoshizumi, Naoto Hoshiyama
-
Publication number: 20150295657Abstract: A repeater includes: a pressure-tight casing to be arranged on seabed or in sea; and a feedthrough having a plurality of lead sections each configured to connect a circuit housed in the pressure-tight casing with a cable outside the pressure-tight casing, wherein the plurality of lead sections include at least a power wire and an electric signal wire, and at least two of the plurality of lead sections have a difference in length from each other.Type: ApplicationFiled: March 24, 2015Publication date: October 15, 2015Applicant: Fujitsu LimitedInventors: Naoto Hoshiyama, Takahisa Yoshizumi
-
Publication number: 20150153019Abstract: A light pipe includes a plurality of light guide units, and a connection unit that integrally connects the plurality of light guide units, the connection unit including a light interference suppression hole formed between the light guide units adjacent to each other, the light interference suppression hole including at least one surface that satisfies a total reflection condition of light entering the light interference suppression hole from the connection unit.Type: ApplicationFiled: October 30, 2014Publication date: June 4, 2015Inventors: Takahisa Yoshizumi, Chiyu Ishizuka
-
Publication number: 20150125123Abstract: An optical transmission device includes: a first cage and a second cage provided in parallel on a top surface of a substrate, into which modules connectable to an optical transmission path are inserted, respectively; a first heat sink including: a first main body arranged along surfaces of the first cage and the second cage at the opposite side to the substrate, and a first plate member rising from a bottom surface of the first main body which faces the substrate, and arranged between the first cage and the second cage.Type: ApplicationFiled: October 27, 2014Publication date: May 7, 2015Applicant: FUJITSU LIMITEDInventors: Takahisa Yoshizumi, Naoto Hoshiyama
-
Publication number: 20150013956Abstract: A heat radiation plate includes a depressed portion into which thermally-conductive resin that transfers heat of an electronic component to the heat radiation plate is poured, and a plurality of check portions configured to be provided to the depressed portion and with an upper surface portion and a lower surface portion stepwise at positions lower than an outer edge portion of the depressed portion and higher than a bottom surface portion of the depressed portion so that a liquid level of the thermally-conductive resin is visually checkable, wherein when the thermally-conductive resin is normally filled in the depressed portion, each of the lower surface portions of the plurality of check portions is covered with the thermally-conductive resin and each of the upper surface portions of the plurality of check portions is exposed without being covered with the thermally-conductive resin.Type: ApplicationFiled: May 23, 2014Publication date: January 15, 2015Applicant: FUJITSU LIMITEDInventors: Takahisa Yoshizumi, Naoto Hoshiyama
-
Publication number: 20140369004Abstract: A heat-transfer plate includes a pool portion configured to have a partially-depressed surface and to be loaded with thermally-conductive resin that is in contact with a heating component so as to transfer the heat from the heating component to the heat-transfer plate, a resin-amount check portion configured to have a plurality of depths and to be disposed at a position where the thermally-conductive resin is viewable in a state where the printed circuit board is fixed to the heat-transfer plate, a levee portion configured to be provided between the pool portion and the resin-amount check portion and to suppress flow of the thermally-conductive resin toward the resin-amount check portion, and a flow channel configured to be provided between the pool portion and the resin-amount check portion and to serve as a path through which the thermally-conductive resin flowing into the resin-amount check portion from the pool portion travels.Type: ApplicationFiled: May 22, 2014Publication date: December 18, 2014Applicant: FUJITSU LIMITEDInventors: Takahisa Yoshizumi, Naoto Hoshiyama
-
Patent number: 8905499Abstract: There is provided a slide rail which includes a first rail member, a second rail member provided slidably with respect to the first rail member, the second rail member including a hole portion opening at least on a surface of the second rail member on the side of the first rail member, a lock lever and a rotating shaft provided on the surface of second rail member on the side of the first rail member, the lock lever being provided to be able to rotate about the rotating shaft, the lock lever including a tongue portion, the tongue portion being formed so as to be inserted in the hole portion, and a receiving portion provided on the second rail member and configured to hold the tongue portion of the lock lever from the direction of the first rail member.Type: GrantFiled: June 3, 2013Date of Patent: December 9, 2014Assignee: Fujitsu LimitedInventors: Takahisa Yoshizumi, Kazuhiro Watanabe, Yasuo Iwahashi, Motoshi Hamasaki
-
Publication number: 20130328470Abstract: There is provided a slide rail which includes a first rail member, a second rail member provided slidably with respect to the first rail member, the second rail member including a hole portion opening at least on a surface of the second rail member on the side of the first rail member, a lock lever and a rotating shaft provided on the surface of second rail member on the side of the first rail member, the lock lever being provided to be able to rotate about the rotating shaft, the lock lever including a tongue portion, the tongue portion being formed so as to be inserted in the hole portion, and a receiving portion provided on the second rail member and configured to hold the tongue portion of the lock lever from the direction of the first rail member.Type: ApplicationFiled: June 3, 2013Publication date: December 12, 2013Inventors: Takahisa YOSHIZUMI, Kazuhiro Watanabe, Yasuo Iwahashi, Motoshi Hamasaki
-
Patent number: 7926987Abstract: An electronic apparatus installed outdoors includes a cabinet body having an opening that houses components constituting the electronic apparatus, a lid body that closes the opening, a printed circuit board unit on which electronic components are mounted, and a block made from an opaque material that has a plurality of holes and is disposed between the printed circuit board unit and the lid body. The printed circuit board unit has a plurality of LED's that indicate operating states of the electronic apparatus. The lid body has a window portion covered with a transparent material having a larger area than a region where the LED's are arranged, so that the window faces the region. The block is disposed so that light emission from the plurality of LED's can be observed from the outside of the electronic apparatus through the respective plurality of holes and the window portion.Type: GrantFiled: December 31, 2007Date of Patent: April 19, 2011Assignee: Fujitsu LimitedInventors: Yasuhisa Kanemaru, Takahisa Yoshizumi, Haruki Hirata, Mitsuru Etou, Makoto Kawakami
-
Patent number: 7896535Abstract: A display module includes: a display unit having a display screen for displaying information; a display unit housing including a transparent front cover covering a display screen of the display unit, and a pair of side covers covering both sides of the display unit, wherein the display unit is attached to the display unit housing so as to be detachable; and shafts projecting outwards from the pair of side covers and supported so as to be freely rotatable when fitted in a pair of supporting holes made in a housing provided for an apparatus.Type: GrantFiled: September 26, 2008Date of Patent: March 1, 2011Assignee: Fujitsu LimitedInventors: Takahisa Yoshizumi, Kazunori Omori, Yasuhisa Kanemaru, Tsutomu Takahashi, Hideki Zenitani
-
Publication number: 20090086418Abstract: A display module includes: a display unit having a display screen for displaying information; a display unit housing including a transparent front cover covering a display screen of the display unit, and a pair of side covers covering both sides of the display unit, wherein the display unit is attached to the display unit housing so as to be detachable; and shafts projecting outwards from the pair of side covers and supported so as to be freely rotatable when fitted in a pair of supporting holes made in a housing provided for an apparatus.Type: ApplicationFiled: September 26, 2008Publication date: April 2, 2009Applicant: FUJITSU LIMITEDInventors: Takahisa YOSHIZUMI, Kazunori OMORI, Yasuhisa KANEMARU, Tsutomu TAKAHASHI, Hideki ZENITANI
-
Publication number: 20080192495Abstract: An electronic apparatus installed outdoors includes a cabinet body having an opening that houses components constituting the electronic apparatus, a lid body that closes the opening, a printed circuit board unit on which electronic components are mounted, and a block made from an opaque material that has a plurality of holes and is disposed between the printed circuit board unit and the lid body. The printed circuit board unit has a plurality of LED's that indicate operating states of the electronic apparatus. The lid body has a window portion covered with a transparent material having a larger area than a region where the LED's are arranged, so that the window faces the region. The block is disposed so that light emission from the plurality of LED's can be observed from the outside of the electronic apparatus through the respective plurality of holes and the window portion.Type: ApplicationFiled: December 31, 2007Publication date: August 14, 2008Applicant: FUJITSU LIMITEDInventors: Yasuhisa Kanemaru, Takahisa Yoshizumi, Haruki Hirata, Mitsuru Etou, Makoto Kawakami
-
Patent number: 6496358Abstract: The present invention relates to a breaker apparatus and breaker unit. The breaker apparatus comprises a breaker unit including a power supply/cut-off breaker part, a power connecting part, a first unit connecting part, a ground connecting part and a second unit connecting part and further comprises a breaker unit mounting board including a mating power connecting part, a mating ground connecting part, a first connection mediating part and a second connection mediating part. This breaker apparatus is capable of constituting a power distributing apparatus with a necessary but minimized construction, and of extending the breaker unit in a minimum unit according to necessity. In addition, with this breaker apparatus, parts can be used in common irrespective of a change of a ground system, and further, can be replaced in the hot-line condition without cutting off the power supply to a system.Type: GrantFiled: December 30, 1998Date of Patent: December 17, 2002Assignee: Fujitsu LimitedInventors: Yasuhisa Kanemaru, Takahisa Yoshizumi, Kazunori Oomori, Yoshiaki Tobimatsu, Yasunori Murata, Mitsuru Etou
-
Publication number: 20020105399Abstract: The present invention relates to a breaker apparatus and breaker unit. The breaker apparatus comprises a breaker unit including a power supply/cut-off breaker part, a power connecting part, a first unit connecting part, a ground connecting part and a second unit connecting part and further comprises a breaker unit mounting board including a mating power connecting part, a mating ground connecting part, a first connection mediating part and a second connection mediating part. This breaker apparatus is capable of constituting a power distributing apparatus with a necessary but minimized construction, and of extending the breaker unit in a minimum unit according to necessity. In addition, with this breaker apparatus, parts can be used in common irrespective of a change of a ground system, and further, can be replaced in the hot-line condition without cutting off the power supply to a system.Type: ApplicationFiled: December 30, 1998Publication date: August 8, 2002Inventors: YASUHISA KANEMARU, TAKAHISA YOSHIZUMI, KAZUNORI OOMORI, YOSHIAKI TOBIMATSU, YASUNORI MURATA, MITSURU ETOU