Patents Assigned to Uchiyama Manufacturing Corp.
  • Patent number: 11421738
    Abstract: A bearing sealing device including a slinger member having a slinger cylindrical portion, a slinger flange portion, and a slinger outer diametrical cylindrical portion projecting from an outer diametrical side end portion of the slinger flange portion so as to overlap in diametrical direction with a step portion of the flange, and including a seal member having a seal member having a core member and a seal lip member. A seal outer diametrical cylindrical portion having a region facing an outer circumferential face of the slinger outer diametrical cylindrical portion and projecting so as to overlap in diametrical direction with the step portion is provided on an outer diametrical side end portion of the seal member. A projecting distal end portion of the seal outer diametrical cylindrical portion projects toward a side of the step portion further than a projecting distal end portion of the slinger outer diametrical cylindrical portion.
    Type: Grant
    Filed: March 17, 2020
    Date of Patent: August 23, 2022
    Assignee: UCHIYAMA MANUFACTURING CORP.
    Inventor: Junpei Zhang
  • Patent number: 11371611
    Abstract: There is provided a seal member for a bearing comprising a molded rubber article and a core metal, wherein the molded rubber article is produced by vulcanization-molding a rubber composition comprising 100 parts by mass of a rubber (A) containing an acrylic acid ester as a main component, 1 to 30 parts by mass of a carbon material (B), and 10 to 100 parts by mass of a carbon black (C) having a DBP oil absorption of 20 mL/100 g or more and less than 150 mL/100 g; the carbon material (B) is a carbon nanotube (B1) or a carbon black (B2) having a DBP oil absorption of 150 mL/100 g or more and 1000 mL/100 g or less; and a volume resistivity of the molded rubber article is 1×106 ?·cm or less.
    Type: Grant
    Filed: March 9, 2020
    Date of Patent: June 28, 2022
    Assignee: UCHIYAMA MANUFACTURING CORP.
    Inventors: Keiko Ikeda, Yoshihiko Yamaguchi, Tomohisa Yamamoto, Tatsuo Katayama
  • Publication number: 20220119652
    Abstract: There is provided a decorative sheet composed of a multilayer structure having an intermediate layer and a protective layer on a surface of a cork sheet, wherein a decolorized cork layer is formed on the surface of the cork sheet in contact with the intermediate layer; the intermediate layer is a coated film formed by drying an aqueous emulsion; the protective layer comprises an ultraviolet absorbing layer made of a resin composition containing an ultraviolet absorbing agent; and the surface of the protective layer is a design surface. Such a decorative sheet has excellent light resistance and fastness to rubbing, and also maintains an appearance peculiar to cork.
    Type: Application
    Filed: October 15, 2021
    Publication date: April 21, 2022
    Applicant: UCHIYAMA MANUFACTURING CORP.
    Inventors: Mari KAWATA, Tomohisa YAMAMOTO, Kazuhiro SHIMIZU, Yuki NISHIYAMA
  • Patent number: 10794324
    Abstract: Provided is a spacer configured such that a protruding portion remaining after removal of a portion unnecessary after molding does not contact an inner wall of a coolant water flow path and therefore, even a portion of the spacer in the vicinity of the remaining portion can be positioned close to the cylinder bore side inner wall. The spacer of this embodiment is a spacer (4) formed of a resin molded body and inserted, in use, into a coolant water flow path (3) through an opening (30) of the coolant water flow path (3) that is formed around a plurality of cylinder bores (2) formed adjacent to each other in a cylinder block (1) of an internal combustion engine. The spacer (4) includes a spacer body (40) formed in a cylindrical shape to surround the cylinder bores (2), and a protruding remaining portion (5) remaining after removal of a portion (6ba) necessary in molding and unnecessary after molding.
    Type: Grant
    Filed: September 4, 2014
    Date of Patent: October 6, 2020
    Assignee: UCHIYAMA MANUFACTURING CORP.
    Inventors: Masayuki Mori, Koji Makino
  • Patent number: 10796834
    Abstract: A magnetization method and a magnetization apparatus for forming an objective magnetized state in a one-dimensional region of a magnetic body, and a magnet for a magnetic encoder. In the magnetization method, magnetism in one direction is applied to an entire half wavelength interval of a sine wave on the magnetic body by a magnetizing yoke and a magnetized state of a first-order rectangle wave or of a first-order trapezoidal wave is formed in the interval, the magnetized state presenting polarity information in a rectangle or trapezoidal pulse shape; and thereafter, magnetism in opposite direction is applied to a start point and a terminal point of the interval by the same magnetizing yoke or a different magnetizing yoke one time or several times and the magnetized state of the first-order rectangle wave or of the first-order trapezoidal wave is changed into the objective magnetized state.
    Type: Grant
    Filed: December 6, 2017
    Date of Patent: October 6, 2020
    Assignee: UCHIYAMA MANUFACTURING CORP.
    Inventor: Hiroshi Seno
  • Publication number: 20200300363
    Abstract: There is provided a seal member for a bearing comprising a molded rubber article and a core metal, wherein the molded rubber article is produced by vulcanization-molding a rubber composition comprising 100 parts by mass of a rubber (A) containing an acrylic acid ester as a main component, 1 to 30 parts by mass of a carbon material (B), and 10 to 100 parts by mass of a carbon black (C) having a DBP oil absorption of 20 mL/100 g or more and less than 150 mL/100 g; the carbon material (B) is a carbon nanotube (B1) or a carbon black (B2) having a DBP oil absorption of 150 mL/100 g or more and 1000 mL/100 g or less; and a volume resistivity of the molded rubber article is 1×106 ?·cm or less.
    Type: Application
    Filed: March 9, 2020
    Publication date: September 24, 2020
    Applicant: UCHIYAMA MANUFACTURING CORP.
    Inventors: Keiko IKEDA, Yoshihiko YAMAGUCHI, Tomohisa YAMAMOTO, Tatsuo KATAYAMA
  • Patent number: 10703026
    Abstract: An objective of the present invention is to provide a method for producing a cork stopper by compression molding cork grains, which can provide a cork stopper excellent in sealability and safety. There is provided a method for producing a cork stopper, comprising: mixing cork grains and an adhesive; compression molding the mixture to give an intermediate; and then heating the intermediate to expand the cork grains.
    Type: Grant
    Filed: September 18, 2018
    Date of Patent: July 7, 2020
    Assignee: UCHIYAMA MANUFACTURING CORP.
    Inventors: Akihiro Anabuki, Tatsuo Katayama, Tomohisa Yamamoto
  • Patent number: 10527101
    Abstract: A bearing sealing device has relatively and coaxially rotating inner and outer members. A first member is fitted onto the inner member, and a second member includes a seal lip portion and a core member fitted into the outer member. The first member has an inner diametrical side cylindrical portion, circular plate portion, and outer diametrical side cylindrical portion. The core member has a cylindrical portion and circular plate portion. A first labyrinth portion is formed along the shaft direction in a gap between the outer diametrical side cylindrical portion and the core member cylindrical portion which face each other diametrically. A second labyrinth portion is formed such that an end face on the bearing space side in the outer diametrical side cylindrical portion faces the core member circular plate portion. A diametrical direction length of the end face is equal to or more than 0.6 mm.
    Type: Grant
    Filed: March 8, 2017
    Date of Patent: January 7, 2020
    Assignee: UCHIYAMA MANUFACTURING CORP.
    Inventor: Masanori Shibayama
  • Patent number: 10520036
    Abstract: A sealing device for sealing an annular space constituted by an inside member and an outside member which rotate relatively to each other includes a core metal having a cylindrical portion fitted to one of the inside member and the outside member, and a seal lip member fixed to the core metal and having a plurality of lip portions contacting the other of the inside member and the outside member. The lip portions includes a first lip portion provided at a position closest to the outside and blocking ventilation between the outside and a space existing between the lip portions, and another lip portion provided at a position farther from the outside than the first lip portion. The other lip portion is provided with a through-hole, which is open to front and rear surfaces and allow ventilation, at a position apart from a contact portion with the other member.
    Type: Grant
    Filed: October 2, 2018
    Date of Patent: December 31, 2019
    Assignee: UCHIYAMA MANUFACTURING CORP.
    Inventors: Koki Ishida, Wakana Kato
  • Patent number: 10507618
    Abstract: A tubular body formed by joining two semi-tubular portions that are divided in radial direction, the tubular body having a connection flange portion provided with a bolt hole on at least one end portion. The two semi-tubular portions have joint projection portions at both edge portions in circumferential direction, the joint projection portions projecting in radial direction and extending in axial direction, and each joint projection portion of the semi-tubular portions on at least one of both sides in circumferential direction is configured to be bent so as to deviate from a virtual division face passing a central axis in such a manner that a joint portion formed by abutting the joint projection portions does not interfere with a tool for fastening a bolt inserted into the bolt hole in a predetermined area in the vicinity of the bolt hole of the connection flange portion.
    Type: Grant
    Filed: September 21, 2017
    Date of Patent: December 17, 2019
    Assignee: UCHIYAMA MANUFACTURING CORP.
    Inventors: Masayuki Mori, Katsunori Matsuki
  • Patent number: 10378419
    Abstract: A water jacket spacer adjusting a flow amount of cooling water in a water jacket, the water jacket spacer being inserted in the water jacket of a cylinder block, the water jacket spacer has a spacer body and a rectification means inhibiting flow of cooling water to an inner wall on a cylinder bore side of the water jacket, the rectification means having a form of a pocket and being provided on a face of the spacer body, the face being on a side of a cooling water introduction port of the water jacket, the rectification means being provided lower than the cooling water introduction port in a depth direction.
    Type: Grant
    Filed: January 23, 2015
    Date of Patent: August 13, 2019
    Assignee: UCHIYAMA MANUFACTURING CORP.
    Inventor: Koji Makino
  • Patent number: 10344803
    Abstract: A sealing device provided between an outer member and an inner member that coaxially rotates relative to the outer member. The sealing device includes a first member in a form of a double cylinder being fitted onto the inner member; and a second member including a core member that is fitted into the outer member and a seal lip portion made of elastic material that is fixed to the core member and elastically contacts the first member, the first member and the second member being combined. The first member includes an inner diametrical side cylindrical portion and an outer diametrical side cylindrical portion that extend toward the second member in an axial direction.
    Type: Grant
    Filed: December 10, 2015
    Date of Patent: July 9, 2019
    Assignee: UCHIYAMA MANUFACTURING CORP.
    Inventor: Kentaro Ohmori
  • Patent number: 10247084
    Abstract: There is provided a novel regulating member that ensures easy manufacturing and does not adversely affect cooling water and environment. A spacer 6 is inserted from an opening 30 of a cooling water flow passage 3 into the cooling water flow passage 3 to be disposed. The cooling water flow passage 3 is disposed in a cylinder block 1 in an internal combustion engine. The spacer 6 includes a supporting member 7 with rigidity formed into a shape configured to be disposed in the cooling water flow passage 3 and a regulating portion 8 supported by the supporting member 7. The regulating portion 8 regulates a flow of cooling water. The regulating portion 8 includes a cellulose-based sponge 81. The cellulose-based sponge 81 is restorable from a compressed state through a contact with the cooling water w.
    Type: Grant
    Filed: December 22, 2015
    Date of Patent: April 2, 2019
    Assignee: UCHIYAMA MANUFACTURING CORP.
    Inventor: Koji Makino
  • Publication number: 20190084199
    Abstract: An objective of the present invention is to provide a method for producing a cork stopper by compression molding cork grains, which can provide a cork stopper excellent in sealability and safety. There is provided a method for producing a cork stopper, comprising: mixing cork grains and an adhesive; compression molding the mixture to give an intermediate; and then heating the intermediate to expand the cork grains.
    Type: Application
    Filed: September 18, 2018
    Publication date: March 21, 2019
    Applicant: Uchiyama Manufacturing Corp.
    Inventors: Akihiro ANABUKI, Tatsuo KATAYAMA, Tomohisa YAMAMOTO
  • Patent number: 10203222
    Abstract: Provided is a method for a magnetic encoder having a magnetic body comprised of a magnetic rubber molded article, comprising a mixing step of mixing and then kneading a nitrile rubber (A), a ferrite magnetic powder (B) and a vulcanizing agent (C) to provide a magnetic rubber composition; and a molding step of molding and vulcanizing the magnetic rubber composition in a mold to which a magnetic field is applied to provide the magnetic rubber molded article, wherein a content of the ferrite magnetic powder (B) is 700 to 1500 parts by mass based on 100 parts by mass of the nitrile rubber (A); and a compressed density of the ferrite magnetic powder (B) is 3.5 g/cm3 or more. According to this method, a magnetic encoder having a magnetic body with high coercivity and residual magnetic flux density can be produced by vulcanizing a magnetic rubber composition having favorable moldability.
    Type: Grant
    Filed: May 18, 2015
    Date of Patent: February 12, 2019
    Assignee: UCHIYAMA MANUFACTURING CORP.
    Inventors: Kazushi Sakate, Tadashi Kasamoto, Tatsuo Katayama
  • Patent number: 10174872
    Abstract: A gasket having a core member having an opening, an inner seal portion made of elastic material and formed along an inner circumference of the opening, an outer seal portion made of elastic material and formed along an outer circumference of the core member. The core member has a seal-forming thin portion and an easily-deformable portion, the seal-forming thin portion being configured to form the inner seal portion at the inner circumference and to form the outer seal portion at the outer circumference, and the easily-deformable portion being provided between the inner seal portion and the outer seal portion and being configured to easily deform the core member.
    Type: Grant
    Filed: September 30, 2013
    Date of Patent: January 8, 2019
    Assignees: UCHIYAMA MANUFACTURING CORP., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Keita Yamamoto, Kosuke Sogawa, Kenji Yamanari, Kazunori Ueno
  • Patent number: 10119571
    Abstract: A sealing device configured to seal a gap on a flange portion side between an outer member and an inner member by being attached to the outer member. A circular plate portion of a metal ring has an extending portion extending opposite to a flange portion. A seal body has a projecting portion and a weir portion, the projecting portion being positioned inward in a diametrical direction from the extending portion and extending toward the flange portion, the weir portion being positioned outward in a diametrical direction from the extending portion and extending toward the flange portion. The projecting portion and the weir portion overlap the extending portion in a diametrical direction, the projecting portion and the weir portion being provided adjacent to the extending portion, thereby forming a labyrinth. The labyrinth has a plurality of labyrinth constituting portions folding back along inner and outer faces of the extending portion in a diametrical direction, and the labyrinth is configured to meander.
    Type: Grant
    Filed: June 25, 2015
    Date of Patent: November 6, 2018
    Assignee: UCHIYAMA MANUFACTURING CORP.
    Inventors: Hiroshi Seno, Ai Shiotsuka
  • Patent number: 9895736
    Abstract: A manufacturing method of a cover by bending a non-magnetic metal sheet, the cover being provided between an annular magnet fixed to a rotary member and a magnetic sensor detecting magnetism generated from the annular magnet, and a press die having a first die and a second die configured to be able to approach to and depart from each other. The method includes a bending step of bending the metal sheet by using a forming machine of which contact portion with the metal sheet is a non-magnetized portion. The press die presses and bends a non-magnetic metal sheet, and the first die and the second die include non-magnetic portions on a part of press faces configured to press the metal sheet, respectively, the non-magnetic portions facing each other.
    Type: Grant
    Filed: April 24, 2013
    Date of Patent: February 20, 2018
    Assignee: Uchiyama Manufacturing Corp.
    Inventors: Hiroshi Terazawa, Teruyuki Kiyoshi
  • Patent number: 9840950
    Abstract: A double sump oil pan includes a separator made of plastic that partitions the interior of the oil pan into an inner sump and an outer sump, a plate, and an elastically deformable sealing member attached to the plate. The sealing member closely contacts the inner wall of the oil pan and seals the outer sump. The plate and the separator are fixed to each other.
    Type: Grant
    Filed: June 27, 2014
    Date of Patent: December 12, 2017
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, UCHIYAMA MANUFACTURING CORP.
    Inventors: Kazuya Yoshijima, Naohiro Hayashi, Naohisa Miyashita, Daisuke Uotani, Hiroyuki Sato, Naoto Matsubara, Kenji Takeuchi
  • Patent number: 9799438
    Abstract: A magnetization apparatus for a magnet of a magnetic encoder. The magnetization apparatus is configured to alternately form a positive and a negative magnetization areas by moving a magnetic member along a route penetrating a gap of a magnetization yoke while alternately generating positive and negative magnetic fields in the gap of the magnetization yoke.
    Type: Grant
    Filed: February 14, 2017
    Date of Patent: October 24, 2017
    Assignee: Uchiyama Manufacturing Corp.
    Inventor: Masanori Tomioka