Patents by Inventor Yuusuke FURUTA
Yuusuke FURUTA 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: 11846366Abstract: A solenoid includes a first fixed iron core and a second fixed iron core located on a first end side and a second end side of an axial direction of a coil, a first movable iron core and a second movable iron core located therebetween and attracted by the first fixed iron core and the second fixed iron core by passage of current through the coil, respectively, a spring that biases the first movable iron core to the second fixed iron core side, and a leaf spring that regulates movement of the first movable iron core to the second fixed iron core side with respect to the second movable iron core. The movement of the first movable iron core in a direction orthogonal to the axial direction of the coil with respect to the first fixed iron core and the second fixed iron core is regulated.Type: GrantFiled: September 2, 2020Date of Patent: December 19, 2023Assignee: KYB CORPORATIONInventors: Yoshifumi Kobayashi, Tomoyasu Abe, Yuusuke Furuta, Naoaki Danshita, Kohei Doi, Masatoshi Iyatani
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Patent number: 11655875Abstract: A damping valve includes a valve seat member, a first valve element stacked on the valve seat member, a second valve element provided between an inner circumference valve seat of the valve seat member and the first valve element, the second valve element being configured to open and close a hole of the first valve element, and a biasing member configured to bias the first valve element towards the second valve element, wherein a surface of the second valve element on an opposite side from the valve seat member is higher than the outer circumference valve seat of the valve seat member.Type: GrantFiled: February 12, 2019Date of Patent: May 23, 2023Assignee: KYB CORPORATIONInventors: Yoshifumi Kobayashi, Tomoyasu Abe, Yuusuke Furuta
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Publication number: 20220252128Abstract: A solenoid includes a first fixed iron core and a second fixed iron core located on a first end side and a second end side of an axial direction of a coil, a first movable iron core and a second movable iron core located therebetween and attracted by the first fixed iron core and the second fixed iron core by passage of current through the coil, respectively, a spring that biases the first movable iron core to the second fixed iron core side, a leaf spring that regulates movement of the first movable iron core to the second fixed iron core side with respect to the second movable iron core, and a communication passage that causes the first fixed iron core side of the second movable iron core to communicate with the second fixed iron core side.Type: ApplicationFiled: September 2, 2020Publication date: August 11, 2022Applicant: KYB CORPORATIONInventors: Yoshifumi KOBAYASHI, Tomoyasu ABE, Yuusuke FURUTA, Naoaki DANSHITA, Kohei DOI, Masatoshi IYATANI
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Publication number: 20220254555Abstract: A solenoid includes a first fixed iron core and a second fixed iron core located on one axial end side and the other axial end side of a coil, a first movable member and a second movable member located between those fixed iron cores and configured to be attracted to the first fixed iron core and the second fixed iron core, respectively, by energization of the coil, a spring configured to bias the first movable member toward the second fixed iron core, and a first regulating portion made from a non-magnetic material, provided integrally with the first movable member or the second movable member, and configured to regulate movement of the first movable member toward the second fixed iron core with respect to the second movable member.Type: ApplicationFiled: September 2, 2020Publication date: August 11, 2022Applicant: KYB CORPORATIONInventors: Yoshifumi KOBAYASHI, Tomoyasu ABE, Yuusuke FURUTA, Naoaki DANSHITA, Kohei DOI, Masatoshi IYATANI
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Publication number: 20220252127Abstract: A solenoid includes a first fixed iron core and a second fixed iron core located on a first end side and a second end side of an axial direction of a coil, a first movable iron core and a second movable iron core located therebetween and attracted by the first fixed iron core and the second fixed iron core by passage of current through the coil, respectively, a spring housed in a spring chamber formed on the first fixed iron core side of the first movable iron core and biasing the first movable iron core to the second fixed iron core side, a leaf spring that regulates movement of the first movable iron core to the second fixed iron core side with respect to the second movable iron core, and a throttle passage that causes the spring chamber to communicate with outside.Type: ApplicationFiled: September 2, 2020Publication date: August 11, 2022Applicant: KYB CORPORATIONInventors: Yoshifumi KOBAYASHI, Tomoyasu ABE, Yuusuke FURUTA, Naoaki DANSHITA, Kohei DOI, Masatoshi IYATANI
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Publication number: 20220243839Abstract: A solenoid includes a first fixed iron core and a second fixed iron core located on a first end side and a second end side of an axial direction of a coil, a first movable iron core and a second movable iron core located therebetween and attracted by the first fixed iron core and the second fixed iron core by passage of current through the coil, respectively, a spring that biases the first movable iron core to the second fixed iron core side, and a leaf spring that regulates movement of the first movable iron core to the second fixed iron core side with respect to the second movable iron core. The movement of the first movable iron core in a direction orthogonal to the axial direction of the coil with respect to the first fixed iron core and the second fixed iron core is regulated.Type: ApplicationFiled: September 2, 2020Publication date: August 4, 2022Applicant: KYB CORPORATIONInventors: Yoshifumi KOBAYASHI, Tomoyasu ABE, Yuusuke FURUTA, Naoaki DANSHITA, Kohei DOI, Masatoshi IYATANI
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Publication number: 20210025471Abstract: A damping valve includes a valve seat member, a first valve element stacked on the valve seat member, a second valve element provided between an inner circumference valve seat of the valve seat member and the first valve element, the second valve element being configured to open and close a hole of the first valve element, and a biasing member configured to bias the first valve element towards the second valve element, wherein a surface of the second valve element on an opposite side from the valve seat member is higher than the outer circumference valve seat of the valve seat member.Type: ApplicationFiled: February 12, 2019Publication date: January 28, 2021Applicant: KYB CorporationInventors: Yoshifumi KOBAYASHI, Tomoyasu ABE, Yuusuke FURUTA
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Patent number: 10330170Abstract: A rod guide includes a housing portion and a depressed portion formed toward an outer periphery from a starting point located apart from a piston rod by ½ or more of a distance in an axial direction between a bottom surface of the housing portion and a flat portion of an oil seal in a radial direction closest to the piston rod, and a bush is disposed to be flush with the bottom surface or disposed to project.Type: GrantFiled: November 30, 2015Date of Patent: June 25, 2019Assignees: KYB CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hirohito Kato, Seiichiro Komatsu, Yuusuke Furuta, Hirofumi Morinaga
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Publication number: 20170350464Abstract: A rod guide includes a housing portion and a depressed portion formed toward an outer periphery from a starting point located apart from a piston rod by ½ or more of a distance in an axial direction between a bottom surface of the housing portion and a flat portion of an oil seal in a radial direction closest to the piston rod, and a bush is disposed to be flush with the bottom surface or disposed to project.Type: ApplicationFiled: November 30, 2015Publication date: December 7, 2017Inventors: Hirohito KATO, Seiichiro KOMATSU, Yuusuke FURUTA, Hirofumi MORINAGA
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Patent number: 9644703Abstract: A shock absorber includes a damping passage that connects an expanding-side chamber with a contracting-side chamber inside a cylinder, a housing that forms a pressurizing chamber, a free piston that partitions the pressurizing chamber into an expanding-side pressurizing chamber and a contracting-side pressurizing chamber, an expanding-side passage that connects the expanding-side chamber with the expanding-side pressurizing chamber, a contracting-side passage that connects the contracting-side chamber with the contracting-side pressurizing chamber, a spring element configured to suppress displacement of the free piston, a cushion configured to collide with the free piston to suppress displacement of the free piston thereover when the free piston is displaced from the neutral position with respect to the housing by a predetermined displacement amount or more; and a cushion fixing member fixed to the housing, the cushion fixing member holding the cushion.Type: GrantFiled: January 21, 2014Date of Patent: May 9, 2017Assignee: KYB CorporationInventors: Seiichiro Komatsu, Tetsuo Arahata, Yuusuke Furuta, Hirohito Kato
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Publication number: 20150354660Abstract: A shock absorber includes a damping passage that connects an expanding-side chamber with a contracting-side chamber inside a cylinder, a housing that forms a pressurizing chamber, a free piston that partitions the pressurizing chamber into an expanding-side pressurizing chamber and a contracting-side pressurizing chamber, an expanding-side passage that connects the expanding-side chamber with the expanding-side pressurizing chamber, a contracting-side passage that connects the contracting-side chamber with the contracting-side pressurizing chamber, a spring element configured to suppress displacement of the free piston, a cushion configured to collide with the free piston to suppress displacement of the free piston thereover when the free piston is displaced from the neutral position with respect to the housing by a predetermined displacement amount or more; and a cushion fixing member fixed to the housing, the cushion fixing member holding the cushion.Type: ApplicationFiled: January 21, 2014Publication date: December 10, 2015Inventors: Seiichiro KOMATSU, Tetsuo ARAHATA, Yuusuke FURUTA, Hirohito KATO