Patents by Inventor Daisuke TAGA
Daisuke TAGA 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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Patent number: 11862415Abstract: A keyswitch device which is provided with a support mechanism which supports a keytop in a movable manner, and a membrane sheet which has a plurality of upper electrodes and a plurality of lower electrodes which respectively correspond to the plurality of the upper electrodes and which form contact pairs with the corresponding upper electrodes. A plurality of contact pairs are arranged for a single keytop. The rubber cup pushes the plurality of contact pairs which are arranged for the single keytop.Type: GrantFiled: July 24, 2020Date of Patent: January 2, 2024Assignee: FUJITSU COMPONENT LIMITEDInventors: Hiromi Ohtsuka, Daisuke Taga, Takuya Saitou, Momosuke Nakahara
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Publication number: 20200357581Abstract: A keyswitch device which is provided with a support mechanism which supports a keytop in a movable manner, and a membrane sheet which has a plurality of upper electrodes and a plurality of lower electrodes which respectively correspond to the plurality of the upper electrodes and which form contact pairs with the corresponding upper electrodes. A plurality of contact pairs are arranged for a single keytop. The rubber cup pushes the plurality of contact pairs which are arranged for the single keytop.Type: ApplicationFiled: July 24, 2020Publication date: November 12, 2020Applicant: FUJITSU COMPONENT LIMITEDInventors: Hiromi OHTSUKA, Daisuke TAGA, Takuya SAITOU, Momosuke NAKAHARA
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Patent number: 10763054Abstract: A keyswitch device which is provided with a support mechanism which supports a keytop in a movable manner, and a membrane sheet which has a plurality of upper electrodes and a plurality of lower electrodes which respectively correspond to the plurality of the upper electrodes and which form contact pairs with the corresponding upper electrodes. A plurality of contact pairs are arranged for a single keytop. The rubber cup pushes the plurality of contact pairs which are arranged for the single keytop.Type: GrantFiled: April 29, 2014Date of Patent: September 1, 2020Assignee: FUJITSU COMPONENT LIMITEDInventors: Hiromi Ohtsuka, Daisuke Taga, Takuya Saitou, Momosuke Nakahara
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Patent number: 10446343Abstract: A key switch includes a movable part configured to be moved by a pressing operation, a support mechanism that movably supports the movable part, an electrical connector including multiple pairs of contacts of upper electrodes and lower electrodes, and a disc spring that is disposed between the movable part and the electrical connector and configured to be elastically deformed by movement of the movable part and to press the electrical connector. The multiple pairs of contacts are provided for one movable part. When the disc spring is deformed by the movement of the movable part, the disc spring is configured to simultaneously press the multiple pairs of contacts provided for the corresponding movable part.Type: GrantFiled: June 9, 2016Date of Patent: October 15, 2019Assignee: FUJITSU COMPONENT LIMITEDInventors: Daisuke Taga, Momosuke Nakahara
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Patent number: 10134541Abstract: A keyboard including: a key top; a slide member that is attached to the key top, slides up and down, and presses a contact via an elastic member; a non-slide member that is attached to the key top, and never moves up and down; supporters that support the slide member and the non-slide member, respectively; wherein the slide member is restrained by the key top in a first direction, and is movable in a second direction vertical to the first direction, and the non-slide member is arranged diagonally with the slide member, is movable in the first direction, and is restrained by the key top in the second direction.Type: GrantFiled: June 12, 2017Date of Patent: November 20, 2018Assignee: FUJITSU COMPONENET LIMITEDInventor: Daisuke Taga
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Publication number: 20180190448Abstract: A key switch includes a movable part configured to be moved by a pressing operation, a support mechanism that movably supports the movable part, an electrical connector including multiple pairs of contacts of upper electrodes and lower electrodes, and a disc spring that is disposed between the movable part and the electrical connector and configured to be elastically deformed by movement of the movable part and to press the electrical connector. The multiple pairs of contacts are provided for one movable part. When the disc spring is deformed by the movement of the movable part, the disc spring is configured to simultaneously press the multiple pairs of contacts provided for the corresponding movable part.Type: ApplicationFiled: June 9, 2016Publication date: July 5, 2018Inventors: Daisuke TAGA, Momosuke NAKAHARA
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Publication number: 20180012713Abstract: A keyboard including: a key top; a slide member that is attached to the key top, slides up and down, and presses a contact via an elastic member; a non-slide member that is attached to the key top, and never move up and down; supporters that support the slide member and the non-slide member, respectively; wherein the slide member is restrained by the key top in a first direction, and is movable in a second direction vertical to the first direction, and the non-slide member is arranged diagonally with the slide member, is movable in the first direction, and is restrained by the key top in the second direction.Type: ApplicationFiled: June 12, 2017Publication date: January 11, 2018Applicant: FUJITSU COMPONENT LIMITEDInventor: Daisuke TAGA
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Patent number: 9318282Abstract: A keyboard is provided with a base member, moving members provided on the base member and unit parts. Each of the unit parts includes a contact which is electrically connected when depressed and an elastic member. The moving members include a first moving member which engages with one unit part, and a second moving member which engages with plural unit parts. The second moving member has a structure where the second moving member pushes the elastic member of one unit part and avoids pushing the elastic member of the other unit part.Type: GrantFiled: October 7, 2013Date of Patent: April 19, 2016Assignee: FUJITSU COMPONENT LIMITEDInventors: Takashi Nakajima, Hiromi Ohtsuka, Daisuke Taga, Fujio Seki
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Publication number: 20140339065Abstract: A keyswitch device which is provided with a support mechanism which supports a keytop in a movable manner, and a membrane sheet which has a plurality of upper electrodes and a plurality of lower electrodes which respectively correspond to the plurality of the upper electrodes and which form contact pairs with the corresponding upper electrodes. A plurality of contact pairs are arranged for a single keytop. The rubber cup pushes the plurality of contact pairs which are arranged for the single keytop.Type: ApplicationFiled: April 29, 2014Publication date: November 20, 2014Applicant: Fujitsu Component LimitedInventors: Hiromi OHTSUKA, Daisuke TAGA, Takuya SAITOU, Momosuke NAKAHARA
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Publication number: 20140102868Abstract: A keyboard is provided with a base member, moving members provided on the base member and unit parts. Each of the unit parts includes a contact which is electrically connected when depressed and an elastic member. The moving members include a first moving member which engages with one unit part, and a second moving member which engages with plural unit parts. The second moving member has a structure where the second moving member pushes the elastic member of one unit part and avoids pushing the elastic member of the other unit part.Type: ApplicationFiled: October 7, 2013Publication date: April 17, 2014Applicant: FUJITSU COMPONENT LIMITEDInventors: Takashi NAKAJIMA, Hiromi OHTSUKA, Daisuke TAGA, Fujio SEKI