Patents by Inventor Masanori Akizuki

Masanori Akizuki 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: 11421173
    Abstract: A sliding member includes: a base material; a coating layer formed on the base material and made of a resin composition including: a binder resin including polyamideimide; PTFE dispersed in the binder resin; and at least one of graphite and MoS2 dispersed in the binder resin; wherein a surface roughness of the coating layer after a sliding test is equal to or less than the surface roughness of the coating layer before the sliding test.
    Type: Grant
    Filed: November 16, 2017
    Date of Patent: August 23, 2022
    Inventors: Kyohei Yamane, Masanori Akizuki
  • Patent number: 11352581
    Abstract: A resin composition includes: a binder resin made of a thermosetting resin; an additive dispersed in the binder resin, wherein the additive includes PTFE (polytetrafluoroethylene), and at least one of graphite and MoS2, an average particle size of each of the additive is less than 10 ?m, and an average particle size of the PTFE is larger than the average particle size of graphite and MoS2.
    Type: Grant
    Filed: November 16, 2017
    Date of Patent: June 7, 2022
    Inventors: Kyohei Yamane, Masanori Akizuki
  • Publication number: 20200355174
    Abstract: A swash plate has a base material having an annular shape including a surface facing a mating member, a plurality of grooves extending in a direction intersecting with a sliding direction of the mating member on the entire circumference of the annular shape on the surface, and a resin coating layer formed on the surface and forming a sliding surface with the mating member.
    Type: Application
    Filed: October 31, 2018
    Publication date: November 12, 2020
    Inventors: Yasuyuki TAGO, Shingo GOTO, Masanori AKIZUKI, Yuuki HAYAMIZU
  • Patent number: 10443654
    Abstract: Bearing 11 has base material 110 and coating layer 111. Base material 110 contains crank shaft 13 on an inner circumferential surface side. The inner circumferential surface of base material 110 is coated with coating layer 111. The inner circumferential surface side of base material 110 is coated with a resin with a thickness t, the resin is dried, and thereafter surface treatment is carried out such that multiple grooves C are provided on the surface of the resin so as to intersect with the direction of crank shaft 13, whereby coating layer 111 is formed. Peak portions B formed between adjacent grooves C come into contact with the outer circumferential surface of crank shaft 13 to support crank shaft 13. With bearing 11, the thickness of peak portions B at the center in the direction of the crank shaft 13 differs from the thickness of peak portions B at the end.
    Type: Grant
    Filed: March 5, 2015
    Date of Patent: October 15, 2019
    Assignee: TAIHO KOGYO CO., LTD.
    Inventors: Akira Sawamoto, Masanori Akizuki
  • Publication number: 20190309235
    Abstract: A resin composition includes: a binder resin made of a thermosetting resin; an additive dispersed in the binder resin, wherein the additive includes PTFE (polytetrafluoroethylene), and at least one of graphite and MoS2, an average particle size of each of the additive is less than 10 ?m, and an average particle size of the PTFE is larger than the average particle size of graphite and MoS2.
    Type: Application
    Filed: November 16, 2017
    Publication date: October 10, 2019
    Inventors: Kyohei YAMANE, Masanori AKIZUKI
  • Publication number: 20190276762
    Abstract: A sliding member includes: a base material; a coating layer formed on the base material and made of a resin composition including: a binder resin including polyamideimide; PTFE dispersed in the binder resin; and at least one of graphite and MoS2 dispersed in the binder resin; wherein a surface roughness of the coating layer after a sliding test is equal to or less than the surface roughness of the coating layer before the sliding test.
    Type: Application
    Filed: November 16, 2017
    Publication date: September 12, 2019
    Inventors: Kyohei YAMANE, Masanori AKIZUKI
  • Patent number: 10184463
    Abstract: A compressor swash plate includes a base member having a flat plate shape, and a coating layer formed on a surface of the base member and having projections formed in a linear shape, in which the following inequalities are satisfied when a plane part formed on a prism is pressed against the coating layer with a pressure of 30 MPa: 0.01?B?0.06 and 10?S?40, where B indicates widths (mm) of surfaces of the projections in contact with the plane part, and S indicates a percentage (%) of a total sum of an area Si of the contact surfaces (a gross area of the surfaces of the projections in contact with the plane part) relative to a reference area (an area of a part of the coating layer against which the plane part is pressed).
    Type: Grant
    Filed: September 28, 2016
    Date of Patent: January 22, 2019
    Assignee: TAIHO KOGYO CO., LTD.
    Inventors: Hideki Niimi, Masanori Akizuki, Hiroshi Kanemitsu
  • Publication number: 20180230980
    Abstract: A compressor swash plate includes a base member having a flat plate shape, and a coating layer formed on a surface of the base member and having projections formed in a linear shape, in which the following inequalities are satisfied when a plane part formed on a prism is pressed against the coating layer with a pressure of 30 MPa: 0.01?B?0.06 and 10?S?40, where B indicates widths (mm) of surfaces of the projections in contact with the plane part, and S indicates a percentage (%) of a total sum of an area Si of the contact surfaces (a gross area of the surfaces of the projections in contact with the plane part) relative to a reference area (an area of a part of the coating layer against which the plane part is pressed).
    Type: Application
    Filed: September 28, 2016
    Publication date: August 16, 2018
    Applicant: TAIHO KOGYO Co., Ltd.
    Inventors: Hideki NIIMI, Masanori AKIZUKI, Hiroshi KANEMITSU
  • Patent number: 9835157
    Abstract: First closing plate and second closing plate close opening portions at both ends of cylindrical member in an axial direction. Base is housed in a space formed by cylindrical member, first closing plate, and second closing plate, and rotates around an axis in the same direction as the axial direction of cylindrical member. Resin layers are formed on thrust surfaces of base. Groove C is a plurality of concentric circular grooves or a spiral groove formed on each resin layer, and the center of circles of the circular grooves or the center of a spiral of the spiral groove is different from the rotation center of base.
    Type: Grant
    Filed: February 19, 2015
    Date of Patent: December 5, 2017
    Assignee: Taiho Kogyo Co., Ltd.
    Inventors: Naoki Horibe, Masanori Akizuki, Hiroshi Kanemitsu
  • Patent number: 9752579
    Abstract: A scroll member includes a base having a panel and a spiral blade provided to extend from the panel toward another scroll member, resin layer L1 formed on the base, and a plurality of grooves C formed on a surface of the resin layer. The plurality of grooves C are formed on the surface of resin layer L1. A cross-section of each groove C has a shape similar to a U-shape or a semicircle in which the width decreases toward the deeper position and the rate of change in width increases toward the bottom. Grooves C are formed by moving an edge of a cutting tool along the original surface of the resin layer, which is originally formed on base L0 by application or the like.
    Type: Grant
    Filed: September 29, 2014
    Date of Patent: September 5, 2017
    Assignee: TAIHO KOGYO CO., LTD.
    Inventors: Hiroshi Kanemitsu, Masanori Akizuki
  • Patent number: 9657818
    Abstract: A swash plate 3 includes a substrate 11 made of an iron-based material, a hard first resin layer 12 provided to coat an end surface of the substrate 11, and a soft second resin layer 13 provided to coat the first resin layer 12. A spiral annular groove 12A is formed in a surface of the first resin layer 12, and the second resin layer 13 is provided to match the sectional shape of the first resin layer 12. With the soft second resin layer 13 on a sliding surface 3A of the swash plate 3, a swash plate 3 having a good fit in an initial stage of sliding can be provided. When the second resin layer 13 partially wears, a protrusion 12 of the first resin layer 12 of the hard resin is exposed to provide good wear resistance and good sliding properties.
    Type: Grant
    Filed: March 27, 2014
    Date of Patent: May 23, 2017
    Assignee: TAIHO KOGYO CO., LTD.
    Inventors: Masanori Akizuki, Shingo Gotou, Hiroshi Kanemitsu
  • Publication number: 20170067508
    Abstract: Bearing 11 has base material 110 and coating layer 111. Base material 110 contains crank shaft 13 on an inner circumferential surface side. The inner circumferential surface of base material 110 is coated with coating layer 111. The inner circumferential surface side of base material 110 is coated with resin with thickness t, the resin is dried, and thereafter surface treatment is carried out such that multiple grooves C are provided on the surface of the resin so as to intersect with the direction of crank shaft 13, whereby coating layer 111 is formed. Peak portions B formed between adjacent grooves C come into contact with the outer circumferential surface of crank shaft 13 to support crank shaft 13. With bearing 11, the thickness of peak portions B at the center in the direction of the crank shaft 13 differs from the thickness of peak portions B at the end.
    Type: Application
    Filed: March 5, 2015
    Publication date: March 9, 2017
    Inventors: Akira SAWAMOTO, Masanori AKIZUKI
  • Patent number: 9512378
    Abstract: A sliding material based on graphite-added resin containing 5 to 60% by weight of graphite particles having an average particle diameter of from 5 to 50 ?m, and a degree of graphitization of 0.6 or more, with the balance being one or more of polyimide resin and polyamide-imide resin, and further, the number of the graphite particles having a minimum diameter/maximum diameter ratio (hereinafter referred to as “particle ratio”) of 0.5 or more amounts to 50% or more of the total number of the graphite particles observed in a photograph of an optional cross section of the sliding material based on graphite-added resin.
    Type: Grant
    Filed: April 7, 2011
    Date of Patent: December 6, 2016
    Assignee: TAIHO KOGYO CO., LTD.
    Inventors: Ryo Mukai, Hiromi Yokota, Akira Sawamoto, Takao Masamura, Masanori Akizuki
  • Patent number: 9453509
    Abstract: A scroll compressor which can be mounted in an automobile has a slide bearing resulting from baking onto a back metal a sliding layer of 5-60 wt % graphite having an average diameter of 5-50 ?m and a graphitization degree of at least 0.6, the remainder containing a polyimide resin and/or a polyamide-imide resin. The form of the graphite has: (a) an average shape factor (YAVE) as defined of 1-4 for the particles excluding the minute particles that are no greater than 0.5 times the average diameter, and there being at least 70% by number of particles having a shape factor (Y) in the range of 1-1.5; or (b) graphite particles having a particle ratio of at least 0.5 being at least 50% of the total by number.
    Type: Grant
    Filed: August 10, 2012
    Date of Patent: September 27, 2016
    Assignee: TAIHO KOGYO CO., LTD.
    Inventors: Naoki Horibe, Masaharu Hatta, Satoshi Nomura, Akira Sawamoto, Takao Masamura, Masanori Akizuki, Youichirou Tsuboi, Maki Aoki, Akio Hiraoka
  • Patent number: 9441620
    Abstract: A swash plate of a swash plate-type compressor is covered with a resin-based coating layer containing 5 to 60 mass % of spherical graphite particles having an average particle diameter of 5 to 50 ?m, the balance being one or more species selected from polyimide resin and polyamide-imide resin. The spherical graphite particles excepting minute particles having a particle diameter 0.5 times or smaller the average particle diameter, have an average shape coefficient (YAVE) falling within a range of 1 to 4, and 70% or more in number of the spherical graphite particles have a shape coefficient (Y) within a range of 1 to 1.5, YAVE=total[{PMi2/4?Ai}]/i Y=PM2/4?A wherein “total” indicates that a value in [ ] is totalized for number “i”, “PM” indicates the circumferential length of one particle, “A” indicates a cross sectional area of one particle, and “i” indicates the measurement number.
    Type: Grant
    Filed: December 2, 2011
    Date of Patent: September 13, 2016
    Assignee: TAIHO KOGYO CO., LTD.
    Inventors: Satoshi Nomura, Masanori Akizuki, Hiroshi Kanemitsu
  • Publication number: 20160238007
    Abstract: A scroll member includes a base having a panel and a spiral blade provided to extend from the panel toward another scroll member, resin layer L1 formed on the base, and a plurality of grooves C formed on a surface of the resin layer. The plurality of grooves C are formed on the surface of resin layer L1. A cross section of each groove C has a shape similar to a U-shape or a semicircle in which the width decreases toward the deeper position and the rate of change in width increases toward the bottom. Grooves C are formed by moving an edge of a cutting tool along the original surface of the resin layer, which is originally formed on base LO by application or the like.
    Type: Application
    Filed: September 29, 2014
    Publication date: August 18, 2016
    Inventors: Hiroshi KANEMITSU, Masanori AKIZUKI
  • Publication number: 20160108916
    Abstract: First closing member and second closing member close opening portions at both ends of cylindrical member in an axial direction. Base is housed in a space formed by cylindrical member, first closing member, and second closing member, and rotates around an axis in the same direction as the axial direction of cylindrical member. Resin layers are formed on thrust surfaces of base. Groove C is a plurality of concentric circular grooves or a spiral groove formed on each resin layer, and the center of circles of the circular grooves or the center of a spiral of the spiral groove is different from the rotation center of base.
    Type: Application
    Filed: February 19, 2015
    Publication date: April 21, 2016
    Inventors: Naoki HORIBE, Masanori AKIZUKI, Hiroshi KANEMITSU
  • Patent number: 9181936
    Abstract: A swash plate compressor 1 includes a swash plate 3 which rotates around a rotary shaft 2, a piston 4 which moves forward and backward in response to the rotation of the swash plate 3 and in which a hemispherical concave sliding surface 4a is formed, and a shoe 5 in which there are formed a flat end surface portion 12 which comes into sliding contact with the swash plate 3 and a spherical surface portion 11 which comes into sliding contact with the sliding surface 4a of the piston 4. A columnar portion 13 is formed between the spherical surface portion 11 and the end surface portion 12 in the shoe 5, and in a boundary area between the columnar portion 13 and the spherical surface portion 11, there is formed a spherical-surface-portion side flange 14 which protrudes radially outward and constitutes the spherical surface portion.
    Type: Grant
    Filed: March 22, 2011
    Date of Patent: November 10, 2015
    Assignee: TAIHO KOGYO CO., LTD.
    Inventors: Satoshi Nomura, Masaharu Hatta, Masanori Akizuki
  • Patent number: 8939644
    Abstract: A swash plate 3 includes a substrate 11 made of an iron-based material, a hard first resin layer 12 provided to coat an end surface of the substrate 11, and a soft second resin layer 13 provided to coat the first resin layer 12. A spiral annular groove 12A is formed in a surface of the first resin layer 12, and the second resin layer 13 is provided to match the sectional shape of the first resin layer 12. With the soft second resin layer 13 on a sliding surface 3A of the swash plate 3, a swash plate 3 having a good fit in an initial stage of sliding can be provided. When the second resin layer 13 partially wears, a protrusion 12 of the first resin layer 12 of the hard resin is exposed to provide good wear resistance and good sliding properties.
    Type: Grant
    Filed: October 27, 2009
    Date of Patent: January 27, 2015
    Assignee: Taiho Kogyo Co., Ltd.
    Inventors: Masanori Akizuki, Shingo Gotou, Hiroshi Kanemitsu
  • Publication number: 20140301880
    Abstract: [Problem] To exchange the roller bearing that has been used in a scroll compressor mounted in an automobile with a m slide bearing. To provide a slide bearing having a performance that is at least equivalent to that of a roller bearing. [Solution] The slide bearing results from baking onto a back metal a sliding layer of 5-60 wt % graphite having an average diameter of 5-50 ?m and a graphitization degree of at least 0.6, the remainder comprising a polyimide resin and/or a polyamide-imide resin. The form of the graphite has: (a) an average shape factor (YAVE) as defined of 1-4 for the particles excluding the minute particles that are no greater than 0.5 times the average diameter, and there being at least 70% by number of particles having a shape factor (Y) in the range of 1-1.5; or (b) graphite particles having a particle ratio of at least 0.5 being at least 50% of the total by number.
    Type: Application
    Filed: August 10, 2012
    Publication date: October 9, 2014
    Applicant: TAIHO KOGYO CO., LTD.
    Inventors: Naoki Horibe, Masaharu Hatta, Satoshi Nomura, Akira Sawamoto, Takao Masamura, Masanori Akizuki, Youichirou Tsuboi, Maki Aoki, Akio Hiraoka