Patents by Inventor Tadanori Tachikawa

Tadanori Tachikawa 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: 20120002363
    Abstract: An electronic apparatus includes a heat dissipating module mounted at a position interposed between a shield plate and a main circuit board and air sent from a fan through a heat dissipating fin is discharged from an air vent, wherein the heat dissipating module includes the heat dissipating fin in contact with the heat generating electronic component; the fan sending the air; and a base body supporting the fan and the heat dissipating fin at a position closer to a side of the shield plate than a position of the fan, and having a slope between the fan and the heat dissipating fin for guiding the air sent from the fan to the heat dissipating fin, wherein the shield plate includes a cut and raised piece which faces the slope and obliquely guides the air sent from the fan to the heat dissipating fin along the slope.
    Type: Application
    Filed: September 8, 2011
    Publication date: January 5, 2012
    Applicant: FUJITSU LIMITED
    Inventors: Ikki Tatsukami, Tadanori Tachikawa
  • Patent number: 8064223
    Abstract: An electronic device includes: a board; a housing in which the board is disposed; and a cable passing through a path that at least partially extends along an inner wall of the housing, the cable having an end connected to the board. The electronic device further includes a cable holding section provided on an inner wall of the housing and located on the path, the cable holding section holding the cable while allowing the cable to move forward and backward along the path.
    Type: Grant
    Filed: July 14, 2009
    Date of Patent: November 22, 2011
    Assignee: Fujitsu Limited
    Inventor: Tadanori Tachikawa
  • Patent number: 8023287
    Abstract: An electronic device includes: a board having a first connector; a housing in which the board is disposed and which has a work opening for allowing external work for the board; and a cable which has an end reaching the board by passing through a path within the housing and has a second connector to be mated with the first connector and disposed at the end. The electronic device further includes a cable holding section provided at an inner wall of the housing and having a slit whose width is smaller than a size of the second connector. The cable holding section holds the cable so that a part of the cable reaches the work opening.
    Type: Grant
    Filed: July 15, 2009
    Date of Patent: September 20, 2011
    Assignee: Fujitsu Limited
    Inventors: Tadanori Tachikawa, Sonomasa Kobayashi
  • Patent number: 7995343
    Abstract: A cooling unit includes: a heat-radiating section in which a coolant flows and which radiates heat caught by the coolant; and a path where the coolant flows through the heat-radiating section; a pump on the path to cause the coolant to flow; and heat absorbing sections disposed on the path to touch heat-producing elements having different heating values, in which the coolant runs to absorb heat produced by the heat-producing elements. One of the heat-absorbing sections is a maximum-heat-absorbing section that touches a maximum-heat-producing element and is disposed downstream from the pump and upstream from the heat-radiating section in a flow of the coolant on the path. Another one of the heat absorbing sections is a low-heat absorbing section that touches the heat-producing element except the maximum-heat-producing element and is disposed upstream from the pump and downstream from the heat-radiating section in the flow of the coolant on the path.
    Type: Grant
    Filed: July 20, 2009
    Date of Patent: August 9, 2011
    Assignee: Fujitsu Limited
    Inventors: Kenji Suzuki, Tadanori Tachikawa
  • Patent number: 7920376
    Abstract: A first card slot extends along a first imaginary plane. A second card slot extends along a second imaginary plane parallel to the first imaginary plane. A printed wiring board is placed between the first and second imaginary planes. A first connector is mounted on the front surface of the printed wiring board. The first connector receives a first card coming through the first card slot. A second connector is mounted on the back surface of the printed wiring board. The second connector receives a second card coming through the second card slot. A guiding member defines a first guiding surface extending along the first imaginary plane and a second guiding surface extending along the second imaginary plane. A space is efficiently utilized at the back surface of the printed wiring board. The first and second cards are enclosed in the enclosure in a layered manner.
    Type: Grant
    Filed: July 11, 2008
    Date of Patent: April 5, 2011
    Assignee: Fujitsu Limited
    Inventors: Masahiko Hattori, Shinji Aoki, Tadanori Tachikawa
  • Patent number: 7817409
    Abstract: An electronic apparatus includes: a case having a first cover and a second cover, which form an internal space of the case in combination; a circuit substrate loaded with an electronic circuit and disposed in the internal space of the case; and a board member extending between the circuit substrate and the second cover, of the internal space of the case. The board member has: a first fixing section that fixes the circuit substrate between the first cover and the board member; and a second fixing section that is formed at a position different from the first fixing section and fixes the board member on the second cover.
    Type: Grant
    Filed: April 21, 2008
    Date of Patent: October 19, 2010
    Assignee: Fujitsu Limited
    Inventors: Masaki Iwata, Tadanori Tachikawa
  • Publication number: 20100259891
    Abstract: An electronic device includes a speaker, a board that includes a speaker placement section in which the speaker is disposed and a double-faced adhesive tape that surrounds the speaker placement section of the board and adheres to an edge of a back surface opposite to a sound emitting surface of the speaker so as to cause the board to support the speaker.
    Type: Application
    Filed: April 6, 2010
    Publication date: October 14, 2010
    Applicant: FUJITSU LIMITED
    Inventor: Tadanori Tachikawa
  • Publication number: 20100073875
    Abstract: A cooling unit includes: a heat-radiating section in which a coolant flows and which radiates heat caught by the coolant; and a path where the coolant flows through the heat-radiating section; a pump on the path to cause the coolant to flow; and heat absorbing sections disposed on the path to touch heat-producing elements having different heating values, in which the coolant runs to absorb heat produced by the heat-producing elements. One of the heat-absorbing sections is a maximum-heat-absorbing section that touches a maximum-heat-producing element and is disposed downstream from the pump and upstream from the heat-radiating section in a flow of the coolant on the path. Another one of the heat absorbing sections is a low-heat absorbing section that touches the heat-producing element except the maximum-heat-producing element and is disposed upstream from the pump and downstream from the heat-radiating section in the flow of the coolant on the path.
    Type: Application
    Filed: July 20, 2009
    Publication date: March 25, 2010
    Applicant: FUJITSU LIMITED
    Inventors: Kenji Suzuki, Tadanori Tachikawa
  • Publication number: 20100073900
    Abstract: An electronic device includes: a board having a first connector; a housing in which the board is disposed and which has a work opening for allowing external work for the board; and a cable which has an end reaching the board by passing through a path within the housing and has a second connector to be mated with the first connector and disposed at the end. The electronic device further includes a cable holding section provided at an inner wall of the housing and having a slit whose width is smaller than a size of the second connector. The cable holding section holds the cable so that a part of the cable reaches the work opening.
    Type: Application
    Filed: July 15, 2009
    Publication date: March 25, 2010
    Applicant: FUJITSU LIMITED
    Inventors: Tadanori Tachikawa, Sonomasa Kobayashi
  • Publication number: 20100073897
    Abstract: An electronic device includes: a board; a housing in which the board is disposed; and a cable passing through a path that at least partially extends along an inner wall of the housing, the cable having an end connected to the board. The electronic device further includes a cable holding section provided on an inner wall of the housing and located on the path, the cable holding section holding the cable while allowing the cable to move forward and backward along the path.
    Type: Application
    Filed: July 14, 2009
    Publication date: March 25, 2010
    Applicant: FUJITSU LIMITED
    Inventor: Tadanori Tachikawa
  • Publication number: 20090298357
    Abstract: An electronic device including: a circuit board on which an electronic component is mounted; a plate material which is used as a ground, the plate material being extended in parallel with the circuit board; and a ground connection member which includes a fixed section and multiple elastic leg sections, the fixed section being tightened to the circuit board and connected to a ground on the circuit board, the elastic leg sections being extended from the fixed section toward different directions along the circuit board, each of the elastic leg sections being extended onto the plate material side to elastically press the plate material.
    Type: Application
    Filed: January 27, 2009
    Publication date: December 3, 2009
    Applicant: FUJITSU LIMITED
    Inventors: Tadanori Tachikawa, Masuo Ohnishi
  • Publication number: 20090180245
    Abstract: A first card slot extends along a first imaginary plane. A second card slot extends along a second imaginary plane parallel to the first imaginary plane. A printed wiring board is placed between the first and second imaginary planes. A first connector is mounted on the front surface of the printed wiring board. The first connector receives a first card coming through the first card slot. A second connector is mounted on the back surface of the printed wiring board. The second connector receives a second card coming through the second card slot. A guiding member defines a first guiding surface extending along the first imaginary plane and a second guiding surface extending along the second imaginary plane. A space is efficiently utilized at the back surface of the printed wiring board. The first and second cards are enclosed in the enclosure in a layered manner.
    Type: Application
    Filed: July 11, 2008
    Publication date: July 16, 2009
    Applicant: FUJITSU LIMITED
    Inventors: Masahiko Hattori, Shinji Aoki, Tadanori Tachikawa
  • Publication number: 20080259539
    Abstract: An electronic apparatus includes: a case having a first cover and a second cover, which form an internal space of the case in combination; a circuit substrate loaded with an electronic circuit and disposed in the internal space of the case; and a board member extending between the circuit substrate and the second cover, of the internal space of the case. The board member has: a first fixing section that fixes the circuit substrate between the first cover and the board member; and a second fixing section that is formed at a position different from the first fixing section and fixes the board member on the second cover.
    Type: Application
    Filed: April 21, 2008
    Publication date: October 23, 2008
    Applicant: FUJITSU LIMITED
    Inventors: Masaki Iwata, Tadanori Tachikawa
  • Publication number: 20080259565
    Abstract: A heat radiator has two or more heat radiation fins arranged at intervals, and conducts heat from the heat radiation fins to air that flows in space of the heat radiation fins. The heat radiation fins have notches formed such that central parts of edges of the heat radiation fins in at least one of the air inflow side and the air outflow side of the heat radiation fins are cut alternately or on a circulating basis in an array direction of the heat radiation fins.
    Type: Application
    Filed: April 21, 2008
    Publication date: October 23, 2008
    Applicant: FUJITSU LIMITED
    Inventors: Masaki Iwata, Tadanori Tachikawa
  • Patent number: 7352357
    Abstract: A data processing apparatus includes a main body, a cover unit having a display such as an LCD, and a detecting mechanism for detecting the opening and closing of the cover unit in relation to the main body. The detecting mechanism includes a cam mounted coaxially to and rotating together with a pivot shaft that can rotate together with the cover unit, and a detecting switch mounted to the main body and directly or indirectly actuated by the action of the cam as the cover unit opens and closes to detect the opening and closing of the cover unit.
    Type: Grant
    Filed: May 20, 2005
    Date of Patent: April 1, 2008
    Assignee: Fujitsu Limited
    Inventors: Tadanori Tachikawa, Sonomasa Kobayashi
  • Publication number: 20070131383
    Abstract: A fan is enclosed in the enclosure of an electronic apparatus. The fan discharges air out of a ventilation opening of the fan itself. Heat radiating fins are located in an air passage extending from the ventilation opening. A dust catcher is removably mounted in an opening of the enclosure from the outside of the enclosure. The dust catcher is located in the air passage between the heat radiating fins and the ventilation opening. The dust catcher serves to catch the dust in the air passage. The dust catcher is removed from the enclosure along with the dust. The dust is thus reliably cleared from the air passage. The dust catcher can then be cleaned. The cleaned dust catcher can again be set in the opening of the enclosure. Airflow of a sufficient amount is in this manner always kept in the air passage.
    Type: Application
    Filed: June 2, 2006
    Publication date: June 14, 2007
    Applicant: FUJITSU LIMITED
    Inventors: Masahiko Hattori, Masuo Ohnishi, Tadanori Tachikawa, Masatoshi Nishizawa, Tomoki Harada, Goro Nakagai, Toyohiro Kato
  • Publication number: 20050212792
    Abstract: A data processing apparatus includes a main body, a cover unit having a display such as an LCD, and a detecting mechanism for detecting the opening and closing of the cover unit in relation to the main body. The detecting mechanism includes a cam mounted coaxially to and rotating together with a pivot shaft that can rotate together with the cover unit, and a detecting switch mounted to the main body and directly or indirectly actuated by the action of the cam as the cover unit opens and closes to detect the opening and closing of the cover unit.
    Type: Application
    Filed: May 20, 2005
    Publication date: September 29, 2005
    Inventors: Tadanori Tachikawa, Sonomasa Kobayashi
  • Patent number: 6906698
    Abstract: A data processing apparatus includes a main body, a cover unit having a display such as an LCD, and a detecting mechanism for detecting the opening and closing of the cover unit in relation to the main body. The detecting mechanism includes a cam mounted coaxially to and rotating together with a pivot shaft that can rotate together with the cover unit, and a detecting switch mounted to the main body and directly or indirectly actuated by the action of the cam as the cover unit opens and closes to detect the opening and closing of the cover unit.
    Type: Grant
    Filed: February 19, 2002
    Date of Patent: June 14, 2005
    Assignee: Fujitsu Limited
    Inventors: Tadanori Tachikawa, Sonomasa Kobayashi
  • Publication number: 20030052858
    Abstract: A data processing apparatus includes a main body, a cover unit having a display such as an LCD, and a detecting mechanism for detecting the opening and closing of the cover unit in relation to the main body. The detecting mechanism includes a cam mounted coaxially to and rotating together with a pivot shaft that can rotate together with the cover unit, and a detecting switch mounted to the main body and directly or indirectly actuated by the action of the cam as the cover unit opens and closes to detect the opening and closing of the cover unit.
    Type: Application
    Filed: February 19, 2002
    Publication date: March 20, 2003
    Applicant: FUJITSU LIMITED
    Inventors: Tadanori Tachikawa, Sonomasa Kobayashi