Patents by Inventor Atsushi MICHISHITA
Atsushi MICHISHITA 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: 20240110571Abstract: A blower includes a first axial fan, a second axial fan, a first current plate, and a holder. The second axial fan is located on one side in the axial direction with respect to the first axial fan. In the first current plate, first hollow cells partitioned by a lattice-shaped first partition wall and penetrating in the axial direction are two-dimensionally arranged. The holder holds the first current plate. The first axial fan is connected in series with the second axial fan in the axial direction via the first current plate and the holder. The holder includes a support portion that includes opening portions opened in the axial direction and is located on one side in the axial direction of the first current plate. Rigidity of the support portion is higher than rigidity of the first current plate.Type: ApplicationFiled: October 2, 2023Publication date: April 4, 2024Inventor: Atsushi MICHISHITA
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Publication number: 20240093699Abstract: A motor includes a rotor rotatable in a circumferential direction around a center axis extending vertically, a stator to rotate the rotor, a lead wire connected to the stator, and a housing covering the rotor and the stator from a radially outer side. The housing includes a first housing located on a first side in an axial direction, and a second housing located on a second side in the axial direction. The first housing includes a wiring convex portion protruding toward the second side in the axial direction. The second housing includes a wiring recess that is recessed toward the second side in the axial direction and penetrates in a radial direction. The wiring convex portion is located in the wiring recess. The wiring convex portion includes a tip surface opposing the second side. The wiring recess includes a bottom surface opposing the first side.Type: ApplicationFiled: November 16, 2023Publication date: March 21, 2024Inventors: Atsushi MICHISHITA, Yuta YAMASAKI, Hirofumi YONEDA
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Patent number: 11873840Abstract: A motor includes a rotor rotatable about a center axis extending vertically, a stator to rotate the rotor, and a housing covering the rotor and the stator from a radially outer side. The housing includes a first housing located on a first side in the axial direction, and a second housing located on a second side in the axial direction. The first housing includes a first opposing surface opposing the second housing in the axial direction, and a first wall portion extending from the first opposing surface to the second side in the axial direction. The second housing includes a second opposing surface opposing the first housing in the axial direction, a second wall portion extending from the second opposing surface to the first side in the axial direction, and a base portion holding the stator. The first wall portion and the second wall portion oppose each other in a radial direction.Type: GrantFiled: October 18, 2022Date of Patent: January 16, 2024Assignee: NIDEC CORPORATIONInventors: Atsushi Michishita, Yuta Yamasaki, Hirofumi Yoneda
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Publication number: 20230120451Abstract: A motor includes a rotor rotatable about a center axis extending vertically, a stator to rotate the rotor, and a housing covering the rotor and the stator from a radially outer side. The housing includes a first housing located on a first side in the axial direction, and a second housing located on a second side in the axial direction. The first housing includes a first opposing surface opposing the second housing in the axial direction, and a first wall portion extending from the first opposing surface to the second side in the axial direction. The second housing includes a second opposing surface opposing the first housing in the axial direction, a second wall portion extending from the second opposing surface to the first side in the axial direction, and a base portion holding the stator. The first wall portion and the second wall portion oppose each other in a radial direction.Type: ApplicationFiled: October 18, 2022Publication date: April 20, 2023Inventors: Atsushi MICHISHITA, Yuta YAMASAKI, Hirofumi YONEDA
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Patent number: 11204043Abstract: A centrifugal fan includes a water outlet connecting an interior and an exterior of a housing at a position closer to a radially inner side than an impeller such that liquid at a bottom of the housing is able to be discharged quickly, and accumulation of the liquid is avoided, to ensure normal operation of the centrifugal fan.Type: GrantFiled: January 4, 2019Date of Patent: December 21, 2021Assignee: NIDEC CORPORATIONInventors: Zhaowu Gu, Atsushi Michishita
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Patent number: 11022141Abstract: A fan assembly for a refrigerator interior includes a lower housing where a fan that rotates around a rotation axis as a center is installed, the rotation axis extending in an up-down direction; an upper housing that includes an inlet that sucks air from the refrigerator interior; and a side housing that covers a surrounding portion of the fan, wherein any one of the upper housing, the lower housing, and the side housing includes a flow straightening member that straightens a flow of air that is discharged from the fan, and wherein any one of the upper housing, the lower housing, and the side housing includes a discharge port.Type: GrantFiled: April 6, 2016Date of Patent: June 1, 2021Assignee: NIDEC CORPORATIONInventors: Ryosuke Hayamitsu, Atsushi Michishita
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Publication number: 20190234429Abstract: A centrifugal fan includes a water outlet connecting an interior and an exterior of a housing at a position closer to a radially inner side than an impeller such that liquid at a bottom of the housing is able to be discharged quickly, and accumulation of the liquid is avoided, to ensure normal operation of the centrifugal fan.Type: ApplicationFiled: January 4, 2019Publication date: August 1, 2019Inventors: Zhaowu GU, Atsushi MICHISHITA
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Patent number: 10340770Abstract: This stator unit includes a cylindrical bearing housing arranged to extend along a central axis extending in a vertical direction; a base member arranged to fix the bearing housing; a stator fixed to an outer circumferential surface of the bearing housing; and a mold resin portion arranged to cover the stator. The stator includes a stator core including a plurality of teeth arranged to project radially outward; an insulator arranged to cover a portion of a surface of the stator core; and a plurality of coils each of which is defined by a conducting wire wound around a separate one of the teeth with the insulator therebetween. A sealing agent is arranged between at least two of the outer circumferential surface of the bearing housing, the stator core, and the insulator.Type: GrantFiled: March 17, 2017Date of Patent: July 2, 2019Assignee: NIDEC CORPORATIONInventors: Hideki Aoi, Megumi Michishita, Atsushi Michishita, Sakae Nogami, Takaya Okuno, Shinsuke Hamano, Hiroshi Miyamoto
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Publication number: 20180163748Abstract: A fan assembly for a refrigerator interior includes a lower housing where a fan that rotates around a rotation axis as a center is installed, the rotation axis extending in an up-down direction; an upper housing that includes an inlet that sucks air from the refrigerator interior; and a side housing that covers a surrounding portion of the fan, wherein any one of the upper housing, the lower housing, and the side housing includes a flow straightening member that straightens a flow of air that is discharged from the fan, and wherein any one of the upper housing, the lower housing, and the side housing includes a discharge port.Type: ApplicationFiled: April 6, 2016Publication date: June 14, 2018Inventors: Ryosuke HAYAMITSU, Atsushi MICHISHITA
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Publication number: 20170288497Abstract: This stator unit includes a cylindrical bearing housing arranged to extend along a central axis extending in a vertical direction; a base member arranged to fix the bearing housing; a stator fixed to an outer circumferential surface of the bearing housing; and a mold resin portion arranged to cover the stator. The stator includes a stator core including a plurality of teeth arranged to project radially outward; an insulator arranged to cover a portion of a surface of the stator core; and a plurality of coils each of which is defined by a conducting wire wound around a separate one of the teeth with the insulator therebetween. A sealing agent is arranged between at least two of the outer circumferential surface of the bearing housing, the stator core, and the insulator.Type: ApplicationFiled: March 17, 2017Publication date: October 5, 2017Inventors: Hideki AOI, Megumi MICHISHITA, Atsushi MICHISHITA, Sakae NOGAMI, Takaya OKUNO, Shinsuke HAMANO, Hiroshi MIYAMOTO