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).

  • Patent number: 11319987
    Abstract: 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: Grant
    Filed: September 3, 2020
    Date of Patent: May 3, 2022
    Assignee: IHI CORPORATION
    Inventor: Naomichi Omori
  • Publication number: 20220120314
    Abstract: 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: Application
    Filed: December 10, 2019
    Publication date: April 21, 2022
    Inventor: Naomichi OMORI
  • Patent number: 11306772
    Abstract: 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: Grant
    Filed: September 3, 2020
    Date of Patent: April 19, 2022
    Assignee: IHI CORPORATION
    Inventor: Naomichi Omori
  • Patent number: 11306771
    Abstract: 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: Grant
    Filed: March 14, 2018
    Date of Patent: April 19, 2022
    Assignee: IHI CORPORATION
    Inventor: Naomichi Omori
  • Patent number: 11293482
    Abstract: 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: Grant
    Filed: March 6, 2019
    Date of Patent: April 5, 2022
    Assignee: IHI CORPORATION
    Inventor: Naomichi Omori
  • Publication number: 20220090626
    Abstract: 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: Application
    Filed: January 20, 2020
    Publication date: March 24, 2022
    Applicant: IHI Corporation
    Inventor: Naomichi OMORI
  • Patent number: 11242892
    Abstract: 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: Grant
    Filed: December 26, 2019
    Date of Patent: February 8, 2022
    Assignee: IHI CORPORATION
    Inventor: Naomichi Omori
  • Publication number: 20220010834
    Abstract: 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: Application
    Filed: September 28, 2021
    Publication date: January 13, 2022
    Applicant: IHI CORPORATION
    Inventor: Naomichi Omori
  • Publication number: 20210372465
    Abstract: 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: Application
    Filed: August 17, 2021
    Publication date: December 2, 2021
    Applicant: IHI CORPORATION
    Inventor: Naomichi OMORI
  • Publication number: 20210355990
    Abstract: 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: Application
    Filed: September 3, 2019
    Publication date: November 18, 2021
    Inventor: Naomichi OMORI
  • Publication number: 20210341013
    Abstract: 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: Application
    Filed: July 15, 2021
    Publication date: November 4, 2021
    Applicant: IHI CORPORATION
    Inventor: Naomichi OMORI
  • Publication number: 20210341012
    Abstract: 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: Application
    Filed: July 14, 2021
    Publication date: November 4, 2021
    Applicant: IHI CORPORATION
    Inventor: Naomichi OMORI
  • Publication number: 20210310515
    Abstract: A thrust foil bearing includes: a base plate provided with an insertion hole through which a shaft is inserted; and a top foil disposed around the insertion hole, wherein the top foil includes a plurality of top foil pieces arranged in a multiple ring shape around the insertion hole.
    Type: Application
    Filed: June 17, 2021
    Publication date: October 7, 2021
    Inventor: Naomichi OMORI
  • Patent number: 11092192
    Abstract: The radial foil bearing includes: a housing provided with an insertion hole; a back foil disposed on an inner peripheral surface of the insertion hole, a notch being provided at an edge of the hack foil in an axial direction in which the insertion hole extends; and an engagement member attached to the housing in a state of passing through the notch and extending to outside of a formation area of the notch in a circumferential direction of the insertion hole on an inner peripheral side of the back foil.
    Type: Grant
    Filed: December 26, 2019
    Date of Patent: August 17, 2021
    Assignee: IHI CORPORATION
    Inventor: Naomichi Omori
  • Publication number: 20210190140
    Abstract: 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: Application
    Filed: March 2, 2021
    Publication date: June 24, 2021
    Applicant: IHI CORPORATION
    Inventor: Naomichi OMORI
  • Publication number: 20210054875
    Abstract: 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: Application
    Filed: March 6, 2019
    Publication date: February 25, 2021
    Applicant: IHI CORPORATION
    Inventor: Naomichi OMORI
  • Publication number: 20210010531
    Abstract: 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 lop 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: Application
    Filed: September 3, 2020
    Publication date: January 14, 2021
    Applicant: IHI CORPORATION
    Inventor: Naomichi OMORI
  • Publication number: 20200408246
    Abstract: 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: Application
    Filed: September 3, 2020
    Publication date: December 31, 2020
    Applicant: IHI CORPORATION
    Inventor: Naomichi OMORI
  • Patent number: 10781853
    Abstract: The radial foil bearing (3, 3A, 3B) includes: a housing (12) provided with an insertion hole (12a), a pair of engagement grooves (15) extending outward in a radial direction from an inner peripheral edge of the insertion hole being provided in both end surfaces in an axial direction of the housing; a back foil (11) disposed on an inner circumferential surface of the insertion hole; an intermediate foil (10) supported by the back foil; and an engagement member (30) including a pair of engagement legs (31) engaging with the pair of engagement grooves, and a connection portion (32) connecting the pair of engagement legs. The intermediate foil is provided with a recess (10c) recessed and protruding toward the back foil, and the connection portion is disposed in the recess.
    Type: Grant
    Filed: March 14, 2018
    Date of Patent: September 22, 2020
    Assignee: IHI CORPORATION
    Inventor: Naomichi Omori
  • Publication number: 20200224714
    Abstract: 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: Application
    Filed: December 26, 2019
    Publication date: July 16, 2020
    Applicant: IHI CORPORATION
    Inventor: Naomichi OMORI