Patents by Inventor Naomichi Omori
Naomichi Omori 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: 11940005Abstract: A radial foil bearing includes a bearing housing which has an insertion hole therein, a top foil which is disposed inside the insertion hole, and a foil structure which is interposed between the top foil and the bearing housing, the foil structure has a folded protruding portion that is bent outward in a radial direction of the insertion hole and is bent back inward in the radial direction, and the folded protruding portion is fitted to a fitting groove formed in an end surface of the bearing housing in an axial direction, the axial direction being a direction in which the insertion hole extends.Type: GrantFiled: September 28, 2021Date of Patent: March 26, 2024Assignee: IHI CORPORATIONInventor: Naomichi Omori
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Patent number: 11927214Abstract: A thrust foil bearing includes a foil which faces a thrust collar mounted on a shaft in an axial direction, and a case which supports the foil and surrounds the thrust collar, wherein a cooling hole is formed in the case.Type: GrantFiled: July 14, 2021Date of Patent: March 12, 2024Assignee: IHI CORPORATIONInventor: Naomichi Omori
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Patent number: 11892032Abstract: A thrust foil bearing includes: a base plate including an insertion hole through which a shaft is inserted; and a top foil disposed around the insertion hole, wherein the top foil includes: a slit dividing the top foil into an inner area and an outer area in a radial direction of the insertion hole; a sandwiched part disposed in the outer area; an extending part extending from the sandwiched part to the inner area; and an inclined part being in the inner area, having an end on one side in a circumferential direction of the insertion hole connected to the extending part, extending from the extending part toward another side in the circumferential direction, and inclined with respect to a flat surface of the base plate extending a direction orthogonal to an axial direction of the insertion hole.Type: GrantFiled: January 20, 2020Date of Patent: February 6, 2024Assignee: IHI CORPORATIONInventor: Naomichi Omori
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Patent number: 11867226Abstract: A base plate of a thrust foil bearing is provided with a plurality of protrusions and a plurality of recesses formed alternately in a first direction in a striped manner, and either one of top surfaces of the plurality of protrusions and bottom surfaces of the plurality of recesses gradually lower toward one side in the first direction.Type: GrantFiled: December 10, 2019Date of Patent: January 9, 2024Assignee: IHI CORPORATIONInventor: Naomichi Omori
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Publication number: 20230366429Abstract: A thrust foil bearing includes: a base plate including an insertion hole through which a shaft is inserted, and a supporting surface expanding in a direction orthogonal to an axial direction of the insertion hole; a step member placed on the supporting surface and formed of a different body from the base plate; and a back foil extending in a circumferential direction of the insertion hole and in which one part of the back foil is supported by the supporting surface and another part of the back foil next to the one part in the circumferential direction is supported by the step member.Type: ApplicationFiled: September 22, 2021Publication date: November 16, 2023Applicant: IHI CorporationInventors: Tsutomu IIDA, Seiichiro YOSHINAGA, Masahiro NAKAJIMA, Shigekazu AOYAMA, Naomichi OMORI
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Patent number: 11795996Abstract: A thrust foil bearing includes a base plate including an insertion hole through which a rotating shaft is inserted and a support surface disposed around the insertion hole on one side of the insertion hole in an axial direction, and a back foil disposed on the support surface, in which the support surface has a plurality of inclined surfaces of which inclination angles inclined toward the other side of the base plate in the axial direction become shallower in order toward an outside of the insertion hole in a radial direction, and the back foil is divided into a plurality of divided regions in the radial direction by a slit, and the plurality of divided regions are supported by the plurality of inclined surfaces.Type: GrantFiled: August 17, 2021Date of Patent: October 24, 2023Assignee: IHI CORPORATIONInventor: Naomichi Omori
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Patent number: 11454276Abstract: A thrust foil bearing of the present disclosure includes a base plate which includes an insertion hole through which a rotation shaft is inserted, a back foil which is disposed around the insertion hole and supported by the base plate, and a top foil which is supported by the back foil, wherein the top foil includes an expansion portion in which a width of the expansion portion in a virtual straight line direction in which a virtual straight line extends decreases in a direction orthogonal to the virtual straight line, the virtual straight line being supported by the back foil on a most downstream side in a rotation direction of the shaft.Type: GrantFiled: September 3, 2019Date of Patent: September 27, 2022Assignee: IHI CORPORATIONInventor: Naomichi Omori
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Patent number: 11408466Abstract: A thrust foil bearing of this disclosure includes: a base plate provided with an insertion hole through which a rotation shaft is inserted; a corrugated bump foil placed around the insertion hole and supported by the base plate; and a top foil which is supported by the bump foil, and in which one side in a circumferential direction of the insertion hole is attached to the base plate and the other side in the circumferential direction of the insertion hole is a free end, and in the thrust foil bearing, a bent portion which is bent toward the base plate is formed on the other side of the top foil in the circumferential direction.Type: GrantFiled: March 2, 2021Date of Patent: August 9, 2022Assignee: IHI CORPORATIONInventor: Naomichi Omori
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Patent number: 11319987Abstract: A radial foil bearing of the present disclosure includes a bearing housing that has an insertion hole into which a rotary shaft is inserted, a base sheet that is disposed in the insertion hole, a back foil that is supported by the base sheet and has unevenness in a radial direction of the insertion hole, and a top foil that is supported by the back foil. The base sheet has a branch deviated in the radial direction of the insertion hole, and is engaged with at least one of the bearing housing, the back foil, and the top foil.Type: GrantFiled: September 3, 2020Date of Patent: May 3, 2022Assignee: IHI CORPORATIONInventor: Naomichi Omori
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Publication number: 20220120314Abstract: A base plate of a thrust foil bearing is provided with a plurality of protrusions and a plurality of recesses formed alternately in a first direction in a striped manner, and either one of top surfaces of the plurality of protrusions and bottom surfaces of the plurality of recesses gradually lower toward one side in the first direction.Type: ApplicationFiled: December 10, 2019Publication date: April 21, 2022Inventor: Naomichi OMORI
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Patent number: 11306772Abstract: A radial foil bearing includes a bearing housing that has an insertion hole into which a shaft is inserted, a back foil that is disposed on an inner peripheral surface of the insertion hole, a top foil that is supported by the back foil, and a protrusion portion that protrudes toward an inner side in a radial direction of the insertion hole from the inner peripheral surface of the insertion hole and is configured to allow supporting of the top foil.Type: GrantFiled: September 3, 2020Date of Patent: April 19, 2022Assignee: IHI CORPORATIONInventor: Naomichi Omori
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Patent number: 11306771Abstract: The radial foil bearing (3, 3A, 3B, 3D) includes: a wave sheet-shaped back foil (11); and an intermediate foil (10) supported by the back foil, and the intermediate foil includes a flat portion (10b) facing a hill part (11c) of a wave sheet shape of the back foil, and a protruding part (39, 40, 40a, 40b, 40B) protruding toward the back foil via branching at a position in a circumferential direction between a top of at least one hill part and a top of a hill part adjacent to the one hill part in the wave sheet shape of the back foil.Type: GrantFiled: March 14, 2018Date of Patent: April 19, 2022Assignee: IHI CORPORATIONInventor: Naomichi Omori
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Patent number: 11293482Abstract: A radial foil bearing includes a bearing housing which has an insertion hole through which a shaft is inserted, a back foil which is disposed on an inner peripheral surface of the insertion hole, and an engagement member which includes a first part and a second part, the first part being disposed to overlap the back foil in a radial direction of the insertion hole and engaged with the back foil, and the second part being attached to the bearing housing, in which the first part has an engagement groove which extends to an end edge of the first part in an axial direction of the insertion hole, and the back foil is disposed in the engagement groove.Type: GrantFiled: March 6, 2019Date of Patent: April 5, 2022Assignee: IHI CORPORATIONInventor: Naomichi Omori
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Publication number: 20220090626Abstract: A thrust foil bearing includes: a base plate including an insertion hole through which a shaft is inserted; and a top foil disposed around the insertion hole, wherein the top foil includes: a slit dividing the top foil into an inner area and an outer area in a radial direction of the insertion hole; a sandwiched part disposed in the outer area; an extending part extending from the sandwiched part to the inner area; and an inclined part being in the inner area, having an end on one side in a circumferential direction of the insertion hole connected to the extending part, extending from the extending part toward another side in the circumferential direction, and inclined with respect to a flat surface of the base plate extending a direction orthogonal to an axial direction of the insertion hole.Type: ApplicationFiled: January 20, 2020Publication date: March 24, 2022Applicant: IHI CorporationInventor: Naomichi OMORI
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Patent number: 11242892Abstract: A radial foil bearing includes: a bearing housing provided with an insertion hole; a top foil accommodated in the insertion hole; and a cover attached to an end surface of the bearing housing in an axial direction in which the insertion hole extends, wherein the top foil is rolled in a cylindrical shape in a state where two ends of the top foil intersect such that the two ends of the top foil are pulled out toward the bearing housing, and the cover faces, in the axial direction, at least either one of the two ends of the top foil, and an engagement member attached to the bearing housing and engaging with the top foil.Type: GrantFiled: December 26, 2019Date of Patent: February 8, 2022Assignee: IHI CORPORATIONInventor: Naomichi Omori
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Publication number: 20220010834Abstract: A radial foil bearing includes a bearing housing which has an insertion hole therein, a top foil which is disposed inside the insertion hole, and a foil structure which is interposed between the top foil and the bearing housing, the foil structure has a folded protruding portion that is bent outward in a radial direction of the insertion hole and is bent back inward in the radial direction, and the folded protruding portion is fitted to a fitting groove formed in an end surface of the bearing housing in an axial direction, the axial direction being a direction in which the insertion hole extends.Type: ApplicationFiled: September 28, 2021Publication date: January 13, 2022Applicant: IHI CORPORATIONInventor: Naomichi Omori
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Publication number: 20210372465Abstract: A thrust foil bearing includes a base plate including an insertion hole through which a rotating shaft is inserted and a support surface disposed around the insertion hole on one side of the insertion hole in an axial direction, and a back foil disposed on the support surface, in which the support surface has a plurality of inclined surfaces of which inclination angles inclined toward the other side of the base plate in the axial direction become shallower in order toward an outside of the insertion hole in a radial direction, and the back foil is divided into a plurality of divided regions in the radial direction by a slit, and the plurality of divided regions are supported by the plurality of inclined surfaces.Type: ApplicationFiled: August 17, 2021Publication date: December 2, 2021Applicant: IHI CORPORATIONInventor: Naomichi OMORI
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Publication number: 20210355990Abstract: A thrust foil bearing (3) of the present disclosure includes a base plate (30) which includes an insertion hole (30a) through which a rotation shaft (1) is inserted, a back foil (20) which is disposed around the insertion hole (30a) and supported by the base plate (30), and a top foil (10) which is supported by the back foil (20), wherein the top foil (10) includes an expansion portion (13) in which a width of the expansion portion in a virtual straight line direction in which a virtual straight line extends decreases in a direction orthogonal to the virtual straight line, the virtual straight line being supported by the back foil (10) on a most downstream side in a rotation direction of the shaft.Type: ApplicationFiled: September 3, 2019Publication date: November 18, 2021Inventor: Naomichi OMORI
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Publication number: 20210341013Abstract: A thrust foil bearing includes: a base plate provided with an insertion hole into which a shaft is inserted; a back foil that is disposed around the insertion hole; and a sandwiched portion that extends from an end portion of the back foil in a circumferential direction of the insertion hole to an outer side in a radial direction of the insertion hole.Type: ApplicationFiled: July 15, 2021Publication date: November 4, 2021Applicant: IHI CORPORATIONInventor: Naomichi OMORI
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Publication number: 20210341012Abstract: A thrust foil bearing includes a foil which faces a thrust collar mounted on a shaft in an axial direction, and a case which supports the foil and surrounds the thrust collar, wherein a cooling hole is formed in the case.Type: ApplicationFiled: July 14, 2021Publication date: November 4, 2021Applicant: IHI CORPORATIONInventor: Naomichi OMORI