Patents by Inventor Daiei Iwamoto
Daiei Iwamoto 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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Publication number: 20150002248Abstract: An electromagnetic relay, includes: a first movable contact that comes in contact with a first fixed contact; a second movable contact that comes in contact with a second fixed contact; a first elastic body that biases the first movable contact; a second elastic body that biases the second movable contact; a pressing member that presses the first elastic body and contacts the first movable contact to the first fixed contact, presses the second elastic body and contacts the second movable contact to the second fixed contact; wherein the pressing member contacts the second movable contact to the second fixed contact before contacting the first movable contact to the first fixed contact.Type: ApplicationFiled: April 9, 2014Publication date: January 1, 2015Applicant: FUJITSU COMPONENT LIMITEDInventor: Daiei IWAMOTO
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Patent number: 8878091Abstract: A switch device includes first and second contacting portions including first and fixed contacting portions and first and second movable contacting portions, respectively, the first fixed contacting portion and the second fixed contacting portion being configured to be electrically connected to one of a power source and an electronic device while the first movable contacting portion and the second movable contacting portion are configured to be electrically connected to the other of the power source and the electronic device; and first and second electric arc voltage suppression units configured to be electrically connected to the first and second fixed contacting portions and the first and second movable contacting portions for suppressing generation of electric arcs there between, respectively.Type: GrantFiled: July 5, 2012Date of Patent: November 4, 2014Assignee: Fujitsu Component LimitedInventors: Takashi Yuba, Daiei Iwamoto, SeungSeok Beak, Koichi Kiryu, Akio Nakamura
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Patent number: 8841572Abstract: A switch device includes first and second contacting portions including first and second fixed contacting portions and first and second movable contacting portions configured to contact the first and second fixed contacting portions, respectively and provided to be adjacent from each other; and a magnet unit provided such that a first pole is positioned to face the first contacting portion and a second pole is positioned to face the second contacting portion to generate magnetic fields between the first fixed contacting portion and the first movable contacting portion and between the second fixed contacting portion and the second movable contacting portion, respectively.Type: GrantFiled: July 5, 2012Date of Patent: September 23, 2014Assignee: Fujitsu Component LimitedInventors: Daiei Iwamoto, Takashi Yuba, Koichi Kiryu, SeungSeok Beak, Akio Nakamura
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Publication number: 20140273637Abstract: A connector includes a connecting terminal, a fixed contact, a movable plate, a movable contact provided at an end of the movable plate, a card that includes an insulator and contacts the movable plate, a button that contacts the card, an opening spring connected to the button, and a sliding operation part that controls a contact between the fixed contact and the movable contact. When the sliding operation part is moved in a first direction, the movable contact is brought into contact with the fixed contact and the connector is turned on. When the sliding operation part is moved in a second direction opposite to the first direction, the movable contact is caused to move away from the fixed contact and the connector is turned off. The sliding operation part is provided on a surface that is different from a surface on which the connecting terminal is provided.Type: ApplicationFiled: August 10, 2012Publication date: September 18, 2014Inventors: SeungSeok Beak, Koichi Kiryu, Takashi Yuba, Daiei Iwamoto, Akio Nakamura, Masatoshi Noritake, Keiichi Hirose
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Patent number: 8809719Abstract: A switch device includes first and second contacting portions including first and second fixed contacting portions and first and second movable contacting portions configured to contact the first and second fixed contacting portions, respectively and provided to be adjacent from each other; and a magnet unit provided such that a first pole is positioned to face the first contacting portion and a second pole is positioned to face the second contacting portion to generate magnetic fields between the first fixed contacting portion and the first movable contacting portion and between the second fixed contacting portion and the second movable contacting portion, respectively.Type: GrantFiled: July 5, 2012Date of Patent: August 19, 2014Assignee: Fujitsu Component LimitedInventors: Daiei Iwamoto, Takashi Yuba, Koichi Kiryu, SeungSeok Beak, Akio Nakamura
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Publication number: 20140158511Abstract: A switch device includes a first contacting portion including a first fixed contact, a first movable contact contactable to the first fixed contact, and a first break contact, the first movable contact being configured to selectively contact one of the first fixed contact and the first break contact; a second contacting portion including a second fixed contact, a second movable contact contactable to the second fixed contact, and a second break contact, the second movable contact being configured to selectively contact one of the second fixed contact and the second break contact; and a mechanical switch that mechanically moves the first movable contact and the second movable contact toward the first fixed contact and the second fixed contact, and toward the first break contact and the second break contact, respectively.Type: ApplicationFiled: February 14, 2014Publication date: June 12, 2014Applicant: FUJITSU COMPONENT LIMITEDInventors: Takashi Yuba, Daiei Iwamoto, SeungSeok Beak, Koichi Kiryu, Akio Nakamura
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Patent number: 8692634Abstract: A switch device includes first and second contacting portions including first and second fixed contacting portions, first and second movable contacting portions and first and second break contacting portions, respectively, the first fixed contacting portion and the second fixed contacting portion being configured to be electrically connected to one of a power source and an electronic device while the first movable contacting portion and the second movable contacting portion are configured to be electrically connected to the other of the power source and the electronic device; and a first magnet and a second magnet configured to generate magnetic fields between the first fixed contacting portion and the first movable contacting portion and between the second fixed contacting portion and the second movable contacting portion, respectively.Type: GrantFiled: July 5, 2012Date of Patent: April 8, 2014Assignee: Fujitsu Component LimitedInventors: Takashi Yuba, Daiei Iwamoto, SeungSeok Beak, Koichi Kiryu, Akio Nakamura
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Patent number: 8686817Abstract: An electromagnetic relay includes an electromagnet part, an actuating part, a contact part and a base for holding the electromagnet part, the actuating part and the contact part. The contact part includes a pair of fixed plates having one end fixed to the base and the other end to which a fixed contact is attached, a pair of movable springs having one end fixed to the base and the other end to which a movable contact is attached, and a connecting portion extending between the movable springs and electrically connecting the movable contacts to each other. The actuating part is actuated so as to press only a part of the movable springs inside an area defined between longitudinal axes extending between one end and the other end of the movable springs through the movable contact, when the contact part closes.Type: GrantFiled: August 29, 2012Date of Patent: April 1, 2014Assignee: Fujitsu Component LimitedInventors: Kazuo Kubono, Takashi Yuba, Satoshi Takano, Daiei Iwamoto
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Patent number: 8664553Abstract: A switch device includes first and second contacting portions including first and second fixed contacting portions and first and second movable contacting portions, respectively, the first fixed contacting portion and the second fixed contacting portion being configured to be electrically connected to one of a power source and an electronic device while the first movable contacting portion and the second movable contacting portion are configured to be electrically connected to the other of the power source and the electronic device; a first electric arc runner provided near at least one of the first fixed contacting portion and the first movable contacting portion; and a second electric arc runner provided near at least one of the second fixed contacting portion and the second movable contacting portion.Type: GrantFiled: July 5, 2012Date of Patent: March 4, 2014Assignee: Fujitsu Component LimitedInventors: Takashi Yuba, Daiei Iwamoto, SeungSeok Beak, Koichi Kiryu, Akio Nakamura
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Patent number: 8573993Abstract: A connector includes a first connector and a second connector configured to engage with the first connector to establish electrical connection, wherein the first connector includes a first contact terminal, and the second connector includes: a second contact terminal configured to come in contact with the first contact terminal; a switch part connected to the second contact terminal and including a fixed part and a movable part; and a movable member capable of pushing the movable part toward the fixed part, wherein the movable member is pushed by the first connector when the first connector engages with the second connector, and the movable member pushes the movable part toward the fixed part to bring the movable part in contact with the fixed part.Type: GrantFiled: July 25, 2012Date of Patent: November 5, 2013Assignee: Fujitsu Component LimitedInventors: SeungSeok Beak, Koichi Kiryu, Takashi Yuba, Daiei Iwamoto, Akio Nakamura
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Publication number: 20130285774Abstract: An electromagnetic relay includes: a main body including: a first cover; an electromagnet having a first terminal extending toward the outside from a bottom surface of the first cover; and a contact portion that opens and closes according to a magnetic attractive force of the electromagnet, and has a second terminal extending toward the outside from the bottom surface of the first cover; a cable line drawn out to the outside of the electromagnetic relay; and a printed circuit board that fixes the cable line to at least one of the first terminal and the second terminal by dip soldering, and electrically connects the cable line to the at least one of the first terminal and the second terminal.Type: ApplicationFiled: April 24, 2013Publication date: October 31, 2013Applicant: Fujitsu Component LimitedInventors: Yoichi HASEGAWA, Takashi Yuba, Daiei Iwamoto
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Publication number: 20130278362Abstract: An electromagnetic relay includes: a yoke capable of changing a magnetic pole thereof by an electromagnet; an armature that is magnetized by a permanent magnet and contacts with or separates from the yoke in accordance with the magnetic pole of the yoke; a movable contact that contacts with a fixing contact; an elastic body that biases the movable contact; and a pressing member that presses the elastic body in accordance with a movement of the armature to cause the movable contact to at least contact with or separate from the fixing contact, wherein a cover fixing the permanent magnet and the armature, and the pressing member are integrally formed.Type: ApplicationFiled: April 3, 2013Publication date: October 24, 2013Applicant: FUJITSU COMPONENT LIMITEDInventors: Daiei IWAMOTO, Takashi Yuba
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Publication number: 20130231007Abstract: There is provided a connector including a connection terminal to be connected to another connection terminal of another connector; a fixed contact; a movable contact provided on one button end portion of a movable plate; a card made of an insulating material and being in contact with the movable plate; a button in contact with the card; a swing spring connected to the button; and a slide operating portion for controlling a contact between the fixed contact and the movable contact, wherein one of the fixed contact and the movable contact is connected to the connection terminal, the button is pushed down by moving the slide operating portion in one direction to thereby move the movable plate via the card, the connector is in a turn-on state when the fixed contact is in contact with the movable contact, the swing spring generates restoring force in a direction of separating a contact between the fixed contact and the movable contact, and the movable contact is separated from the fixed contact so as to be in a tuType: ApplicationFiled: July 19, 2011Publication date: September 5, 2013Applicants: NTT FACILITIES, INC., FUJITSU COMPONENT LIMITEDInventors: Daiei Iwamoto, SeungSeok Beak, Takashi Yuba, Koichi Kiryu, Keiichi Hirose, Masatoshi Noritake
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Patent number: 8446235Abstract: A disclosed electromagnetic relay includes a fixed contact, a movable contact provided in a movable contact spring, an electric magnet causing the movable contact to contact the fixed contact by applying force via an arming unit, a magnet generating a magnetic field between the fixed contact and the movable contact, and yokes made of a magnetic material, wherein the yokes are arranged in parallel to interpose the fixed contact and the movable contact between the yokes and to apply the magnetic field generated by the magnet to an area where the fixed contact and the movable contact exist, and insulating portions are provided on inner surfaces of the yokes facing the fixed contact and the movable contact, respectively.Type: GrantFiled: April 19, 2012Date of Patent: May 21, 2013Assignee: Fujitsu Component LimitedInventors: Daiei Iwamoto, Takashi Yuba
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Publication number: 20130057370Abstract: An electromagnetic relay includes an electromagnet part, an actuating part, a contact part and a base for holding the electromagnet part, the actuating part and the contact part. The contact part includes a pair of fixed plates having one end fixed to the base and the other end to which a fixed contact is attached, a pair of movable springs having one end fixed to the base and the other end to which a movable contact is attached, and a connecting portion extending between the movable springs and electrically connecting the movable contacts to each other. The actuating part is actuated so as to press only a part of the movable springs inside an area defined between longitudinal axes extending between one end and the other end of the movable springs through the movable contact, when the contact part closes.Type: ApplicationFiled: August 29, 2012Publication date: March 7, 2013Applicant: FUJITSU COMPONENT LIMITEDInventors: Kazuo Kubono, Takashi Yuba, Satoshi Takano, Daiei Iwamoto
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Publication number: 20130037518Abstract: A switch device includes first and second contacting portions including first and second fixed contacting portions and first and second movable contacting portions configured to contact the first and second fixed contacting portions, respectively and provided to be adjacent from each other; and a magnet unit provided such that a first pole is positioned to face the first contacting portion and a second pole is positioned to face the second contacting portion to generate magnetic fields between the first fixed contacting portion and the first movable contacting portion and between the second fixed contacting portion and the second movable contacting portion, respectively.Type: ApplicationFiled: July 5, 2012Publication date: February 14, 2013Applicant: FUJITSU COMPONENT LIMITEDInventors: Daiei Iwamoto, Takashi Yuba, Koichi Kiryu, SeungSeok Beak, Akio Nakamura
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Publication number: 20130040502Abstract: A connector includes a first connector and a second connector configured to engage with the first connector to establish electrical connection, wherein the first connector includes a first contact terminal, and the second connector includes: a second contact terminal configured to come in contact with the first contact terminal; a switch part connected to the second contact terminal and including a fixed part and a movable part; and a movable member capable of pushing the movable part toward the fixed part, wherein the movable member is pushed by the first connector when the first connector engages with the second connector, and the movable member pushes the movable part toward the fixed part to bring the movable part in contact with the fixed part.Type: ApplicationFiled: July 25, 2012Publication date: February 14, 2013Applicant: FUJITSU COMPONENT LIMITEDInventors: SeungSeok Beak, Koichi Kiryu, Takashi Yuba, Daiei Iwamoto, Akio Nakamura
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Publication number: 20130037517Abstract: A switch device includes first and second contacting portions including first and second fixed contacting portions, first and second movable contacting portions and first and second break contacting portions, respectively, the first fixed contacting portion and the second fixed contacting portion being configured to be electrically connected to one of a power source and an electronic device while the first movable contacting portion and the second movable contacting portion are configured to be electrically connected to the other of the power source and the electronic device; and a first magnet and a second magnet configured to generate magnetic fields between the first fixed contacting portion and the first movable contacting portion and between the second fixed contacting portion and the second movable contacting portion, respectively.Type: ApplicationFiled: July 5, 2012Publication date: February 14, 2013Inventors: Takashi Yuba, Daiei Iwamoto, SeungSeok Beak, Koichi Kiryu, Akio Nakamura
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Publication number: 20130037401Abstract: A switch device includes first and second contacting portions including first and second fixed contacting portions and first and second movable contacting portions, respectively, the first fixed contacting portion and the second fixed contacting portion being configured to be electrically connected to one of a power source and an electronic device while the first movable contacting portion and the second movable contacting portion are configured to be electrically connected to the other of the power source and the electronic device; a first electric arc runner provided near at least one of the first fixed contacting portion and the first movable contacting portion; and a second electric arc runner provided near at least one of the second fixed contacting portion and the second movable contacting portion.Type: ApplicationFiled: July 5, 2012Publication date: February 14, 2013Applicant: FUJITSU COMPONENT LIMITEDInventors: Takashi Yuba, Daiei Iwamoto, SeungSeok Beak, Koichi Kiryu, Akio Nakamura
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Publication number: 20130037519Abstract: A switch device includes first and second contacting portions including first and fixed contacting portions and first and second movable contacting portions, respectively, the first fixed contacting portion and the second fixed contacting portion being configured to be electrically connected to one of a power source and an electronic device while the first movable contacting portion and the second movable contacting portion are configured to be electrically connected to the other of the power source and the electronic device; and first and second electric arc voltage suppression units configured to be electrically connected to the first and second fixed contacting portions and the first and second movable contacting portions for suppressing generation of electric arcs there between, respectively.Type: ApplicationFiled: July 5, 2012Publication date: February 14, 2013Inventors: Takashi Yuba, Daiei Iwamoto, SeungSeok Beak, Koichi Kiryu, Akio Nakamura