Patents Assigned to Taiho Kogyo Co., Ltd.
  • Patent number: 11346343
    Abstract: A vane pump including a housing having a peripheral wall portion, a bottom wall portion, and a pump chamber; a rotor disposed in the pump chamber to be rotatable; a vane disposed to be slidable in the radial direction with respect to the rotor and partitioning the pump chamber into working chambers; and a reed valve that opens and closes a discharge hole of the bottom wall portion. A pressure relief groove is disposed in a portion of the bottom wall portion corresponding to the discharge section with a clearance secured between the peripheral wall portion and the pressure relief groove. When the vane overlaps the pressure relief groove, a pair of the working chambers on both sides of the vane in the rotational direction communicates with each other via the pressure relief groove.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: May 31, 2022
    Assignees: TAIHO KOGYO Co., Ltd., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yuji Suzuki, Akihiro Uto, Naoyuki Miyara, Hiroki Hara, Shinsuke Kiyomiya, Akira Fujii
  • Patent number: 11339828
    Abstract: There is provided a method of manufacturing a washer capable of suppressing reduction in a sliding area, which includes: a preparing step of preparing a panel-shaped member N; a cutting step of cutting the panel-shaped member N with a laser L2 to thereby obtain a longitudinal member N1; and a forming step of obtaining an arc-shaped washer by using the longitudinal member N1. The panel-shaped member N has an equal width to a longitudinal width of the longitudinal member N1. The cutting step is a step of cutting the panel-shaped member N from one end to the other end in a width direction to thereby obtain the longitudinal member N1 and the forming step is a step of deforming the longitudinal member N1 into an arc shape so that cut faces of the longitudinal member N1 form an outer peripheral face and an inner peripheral face.
    Type: Grant
    Filed: August 29, 2017
    Date of Patent: May 24, 2022
    Assignee: TAIHO KOGYO CO., LTD.
    Inventor: Hirokazu Ochiai
  • Publication number: 20220154768
    Abstract: A plain bearing includes: a bearing body; a radial bearing portion arranged on an inner peripheral surface of the bearing body; a thrust bearing portion arranged on an axial end surface of the bearing body; a damper portion arranged on an outer peripheral surface of the bearing body; a dam portion arranged on the outer peripheral surface of the bearing body; and an oil hole having an inlet that opens to at least one of the outer peripheral surface of the bearing body and the dam portion, and an outlet that opens to the inner peripheral surface of the bearing body. The inlet, at least a part of the dam portion, and the damper portion are arranged in this order from an axially inner side toward an axially outer side. An outlet of an upstream side oil passage is connected to the inlet on a radially outer side.
    Type: Application
    Filed: December 25, 2019
    Publication date: May 19, 2022
    Applicant: TAIHO KOGYO CO., LTD.
    Inventors: Katsumi NAKAMURA, Kazunori NAKAYA, Kazuma HARADA
  • Patent number: 11306718
    Abstract: A vane pump includes a housing, a rotor, a vane and a reed valve. A position at which the sliding direction of the vane with respect to the rotor is inverted from outward to inward is defined as a reference position, and a section of the pump chamber on the discharge hole side with respect to the reference position is defined as a discharge section. A pressure relief groove is disposed in a portion of the bottom wall portion corresponding to the discharge section with a clearance secured between the peripheral wall portion and the pressure relief groove. When the vane overlaps the pressure relief groove, a pair of the working chambers communicate with each other via the pressure relief groove.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: April 19, 2022
    Assignees: TAIHO KOGYO Co., Ltd., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yuji Suzuki, Akihiro Uto, Naoyuki Miyara, Hiroki Hara, Shinsuke Kiyomiya, Akira Fujii
  • Publication number: 20220090631
    Abstract: [Object] Provided is a technique capable of reducing the possibility of generation of a Cu—Sb compound in an overlay and the possibility of delamination between layers. [Solution] A sliding member includes: an overlay including an alloy plating film of Bi and Sb; a lining including an Al alloy; a first intermediate layer including Cu as a main component, and laminated on the lining; and a second intermediate layer including Ag as a main component, and connecting the first intermediate layer and the overlay.
    Type: Application
    Filed: September 19, 2019
    Publication date: March 24, 2022
    Applicant: TAIHO KOGYO CO., LTD.
    Inventor: Shigeyuki SUGA
  • Patent number: 11255330
    Abstract: A manufacturing method of an end plate of a pump that can remove a sag includes: punching a workpiece from a plate material, the workpiece being the end plate including a mounting seat including a fastener; forming a pressed trace surface by pressing an outer edge of an outer surface, when a surface, of both front and back surfaces of the punched workpiece, further from a sag formed on a cut end surface is the outer surface, and a surface, of both front and back surfaces of the punched workpiece, nearer to the sag is an inner surface. A section of the pressed trace surface disposed along an outer edge of the mounting seat is a fastening section. A section of the pressed trace surface other than the fastening section is a non-fastening section. A radial width of the fastening section is shorter than that of the non-fastening section.
    Type: Grant
    Filed: January 31, 2017
    Date of Patent: February 22, 2022
    Assignee: TAIHO KOGYO Co., Ltd.
    Inventors: Syuhei Nishida, Satoshi Ikeda, Kazuya Mizuno, Ken Nakamuta
  • Publication number: 20220042544
    Abstract: An aluminum alloy for a slide bearing of the present invention contains: 0 mass % or more and 10.0 mass % or less of Sn and 0 mass % or more and 5.0 mass % or less of Si, 0 mass % or more and 2.0 mass % or less of Cu as a solid-solution strengthening component, at least one of 0.05 mass % or more and 0.35 mass % or less of Cr, 0.05 mass % or more and 1.5 mass % or less of Mn, and 0.05 mass % or more and 0.3 mass % or less of Zr as a precipitation strengthening component, 2.3 mass % or more and 6.0 mass % or less of Ag, a part of which is dissolved to form a solid solution and the rest of which is precipitated, and the balance consisting of unavoidable impurities and Al.
    Type: Application
    Filed: September 19, 2019
    Publication date: February 10, 2022
    Applicant: TAIHO KOGYO CO., LTD.
    Inventor: Ryuichi MORIOKA
  • Publication number: 20220025290
    Abstract: To provide a technique capable of realizing an appropriate wear resistance in a resin coating layer. The sliding member of the present invention is a sliding member including a base layer and a resin coating layer formed on the base layer, wherein the resin coating layer is formed of a polyamide-imide resin as a binder, barium sulfate particles, molybdenum disulfide particles, and unavoidable impurities, wherein the resin coating layer is composed of a plurality of overcoated application layers, and wherein the plurality of application layers are different from each other in content of hard particles.
    Type: Application
    Filed: August 29, 2019
    Publication date: January 27, 2022
    Applicant: TAIHO KOGYO CO., LTD.
    Inventors: Shinji MATSUMOTO, Yasunori KABEYA
  • Publication number: 20220025928
    Abstract: Provided is a technique capable of exhibiting high seizure resistance even if a scratch is formed. The sliding member of the present invention is a sliding member including a base layer and a resin coating layer formed on the base layer, wherein the resin coating layer is formed of a polyamide-imide resin as a binder, barium sulfate particles, molybdenum disulfide particles having an average particle diameter which is 1.0 time or more and 2.8 times or less the average particle diameter of the barium sulfate particles, and unavoidable impurities.
    Type: Application
    Filed: August 29, 2019
    Publication date: January 27, 2022
    Applicant: TAIHO KOGYO CO., LTD.
    Inventor: Shinji MATSUMOTO
  • Publication number: 20220018387
    Abstract: A sliding bearing that is disposed in a cylinder block and supports a journal portion of a crankshaft, including: a semi-annular first split bearing having a first circumferential end surface; and a semi-annular second split bearing having a second circumferential end surface. The first and second circumferential end surfaces contact each other, the first split bearing has a same outer diameter as an outer diameter of the second split bearing, the second split bearing has a thickness at a second circumferentially central position that is greater than a thickness of the first split bearing at a first circumferentially central position, the thickness of the first split bearing is decreased from the first circumferentially central position toward the first circumferential end surface, the thickness of the second split bearing is decreased from the second circumferentially central position toward the second circumferential end surface.
    Type: Application
    Filed: October 1, 2021
    Publication date: January 20, 2022
    Applicant: TAIHO KOGYO Co., Ltd.
    Inventor: Yasuaki Goto
  • Patent number: 11162386
    Abstract: A turbocharger includes: a shaft connecting a compressor wheel and a turbine wheel; a thrust collar rotating together with the shaft; a thrust bearing holding the thrust collar for rotation; and a bearing housing holding the thrust bearing, wherein the bearing housing includes: an oil supply passage for supplying oil for lubrication to the thrust bearing; an oil discharge passage from which the oil supplied to the thrust bearing is discharged; a wall portion facing the thrust collar; and a groove portion formed in the wall portion and extending from the thrust collar toward a discharge port of the oil discharge passage.
    Type: Grant
    Filed: June 4, 2019
    Date of Patent: November 2, 2021
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, TAIHO KOGYO CO., LTD.
    Inventors: Haruto Ura, Daisuke Terui, Keiichi Ohta, Tsuyoshi Uesugi
  • Patent number: 11149730
    Abstract: A vane pump includes a housing, a rotor rotatable about a rotation axis, and a vane that rotates together with the rotor and reciprocates in a radial direction with respect to the rotor, the vane dividing a pump chamber into a plurality of working chambers. At least one of opposite end surfaces of the vane in an axial direction is a sliding surface that slidably contacts an inner surface of the housing via an oil film, and an oil reservoir portion is provided in the sliding surface in a recessed manner.
    Type: Grant
    Filed: June 19, 2019
    Date of Patent: October 19, 2021
    Assignee: TAIHO KOGYO Co., Ltd.
    Inventors: Ken Nakamuta, Syuhei Nishida
  • Patent number: 11149791
    Abstract: To provide a sliding member including an overlay capable of realizing good fatigue resistance while preventing interlayer peeling. A sliding member including an overlay formed of an alloy plating film of Bi and Sb, and the overlay is bonded to a lining formed of a copper alloy via an intermediate layer containing Ag as a main component.
    Type: Grant
    Filed: February 28, 2019
    Date of Patent: October 19, 2021
    Assignee: TAIHO KOGYO CO., LTD.
    Inventors: Masaya Ichikawa, Shigeyuki Suga
  • Patent number: 11141776
    Abstract: There is provided a method of manufacturing washers with improved material yield. The method includes: a preparing step of preparing a material having a panel shape; a first cutting-out step of cutting out a first thrust washer having a substantially arc shape from the material; and a second cutting-out step of cutting out a second thrust washer from a portion of the material in contact with a portion from which the first thrust washer is cut out.
    Type: Grant
    Filed: June 20, 2017
    Date of Patent: October 12, 2021
    Assignee: TAIHO KOGYO CO., LTD.
    Inventor: Hirokazu Ochiai
  • Patent number: 11035363
    Abstract: A vane pump including: a housing having a pump chamber; a rotor having a cylindrical peripheral wall portion accommodated in the pump chamber and having a pair of vane holding grooves facing each other in a diameter direction, and an oil chamber defined inside the peripheral wall portion to store lubricating oil; and a vane that is held in the pair of vane holding grooves and moves across the oil chamber in the diameter direction, is provided. At least one of an inner surface of the housing and an end face of the peripheral wall portion, which together with the inner surface defines a sliding interface, has an oil groove for the lubricating oil.
    Type: Grant
    Filed: February 27, 2017
    Date of Patent: June 15, 2021
    Assignee: TAIHO KOGYO Co., Ltd.
    Inventors: Satoshi Ikeda, Ken Nakamuta
  • Patent number: 11028879
    Abstract: A sliding member includes an overlay formed with an alloy plated film of Bi and Sb, the Sb concentration increasing in the overlay with the depth from the surface of the overlay.
    Type: Grant
    Filed: January 11, 2019
    Date of Patent: June 8, 2021
    Assignee: TAIHO KOGYO CO., LTD.
    Inventor: Masaya Ichikawa
  • Patent number: 11015586
    Abstract: There is provided a shoe capable of suppressing deformation of a member on which the shoe slides. The shoe includes: a first sliding surface which slides on a concave surface of a piston (first movable member); and a second sliding surface which bulges toward a side opposite to the first sliding surface and slides on a flat surface of a swash plate (second movable member). The second sliding surface includes: a curved outer peripheral portion which is provided along an outer periphery of the second sliding surface; and a central portion which is provided at a center of the second sliding surface so as to be continuous with the curved outer peripheral portion and has a radius of curvature greater than a radius of curvature of the curved outer peripheral portion.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: May 25, 2021
    Assignee: TAIHO KOGYO CO., LTD.
    Inventors: Masato Shibata, Shingo Goto, Yasuyuki Tago
  • Publication number: 20210148364
    Abstract: A manufacturing method of an end plate of a pump that can remove a sag includes: punching a workpiece from a plate material, the workpiece being the end plate including a mounting seat including a fastener; forming a pressed trace surface by pressing an outer edge of an outer surface, when a surface, of both front and back surfaces of the punched workpiece, further from a sag formed on a cut end surface is the outer surface, and a surface, of both front and back surfaces of the punched workpiece, nearer to the sag is an inner surface. A section of the pressed trace surface disposed along an outer edge of the mounting seat is a fastening section. A section of the pressed trace surface other than the fastening section is a non-fastening section. A radial width of the fastening section is shorter than that of the non-fastening section.
    Type: Application
    Filed: January 31, 2017
    Publication date: May 20, 2021
    Applicant: TAIHO KOGYO Co., Ltd.
    Inventors: Syuhei NISHIDA, Satoshi IKEDA, Kazuya MIZUNO, Ken NAKAMUTA
  • Patent number: 10994323
    Abstract: A method of manufacturing a washer capable of improving a material yield is provided. The method includes: a preparation step of preparing a longitudinal member which includes an upper crest portion and a lower crest portion formed on at least one of an upper surface and a lower surface of the longitudinal member, and an upper valley portion and a lower valley portion continuous to the upper crest portion and the rower crest portion in the right-left direction, respectively, the upper valley portion and the lower valley portion provided with projections, respectively; and a deformation step of deforming the longitudinal member such that the upper surface and the lower surface are arcuate as viewed in the direction from the front to the rear.
    Type: Grant
    Filed: October 21, 2016
    Date of Patent: May 4, 2021
    Assignee: TAIHO KOGYO CO., LTD.
    Inventor: Hirokazu Ochiai
  • Patent number: D936119
    Type: Grant
    Filed: August 8, 2017
    Date of Patent: November 16, 2021
    Assignee: TAIHO KOGYO CO., LTD.
    Inventor: Shingo Iguchi