Patents Assigned to Sumitomo Riko Company Limited
  • Patent number: 10978216
    Abstract: A conductive film of the present invention includes an elastomer and a flake-like carbon material. An amount of the flake-like carbon material in the conductive film is 20 parts by mass or more and 60 parts by mass or less when a total solid content excluding a conductive agent is 100 parts by mass. A gloss level of a surface of the conductive film measured at an incidence angle of 20° is more than 0.4% and less than 10%. A method for producing a conductive film of the present invention includes the steps of preparing a liquid composition including an elastomer, a conductive agent including at least one of graphite powder and expanded graphite powder, and a solvent; subjecting the liquid composition to a grinding treatment using a wet jet mill; and applying the liquid composition after the grinding treatment to a base material, and curing the coating film.
    Type: Grant
    Filed: April 13, 2018
    Date of Patent: April 13, 2021
    Assignee: SUMITOMO RIKO COMPANY LIMITED
    Inventors: Yutaro Taguchi, Hiroaki Ito, Yusaku Takagaki
  • Patent number: 10967723
    Abstract: A fluid-filled vibration damping device including an inner member, an outer member having a tubular part, a main rubber elastic body elastically connecting the two members, and a partition disposed on a radially inner side of the tubular part. An axial end portion of the main rubber elastic body is anchored to a radially inner surface of the tubular part and includes a sealing rubber. The partition includes a press-sealing face positioned at an outer peripheral edge of an axial end face thereof, and is pressed against an axial end face of the sealing rubber at the press-sealing face. A seal rib protruding axially outward from the press-sealing face of the partition is more strongly pressed against the axial end face of the sealing rubber such that a fluid-tight sealing is provided axially between the sealing rubber and the partition.
    Type: Grant
    Filed: February 8, 2019
    Date of Patent: April 6, 2021
    Assignee: SUMITOMO RIKO COMPANY LIMITED
    Inventors: Yasuhiro Komiya, Shingo Tanaka
  • Publication number: 20210094628
    Abstract: A vehicle-use resin module including a strength member made of synthetic resin and including a mounting hole, and an attachment member attached to the mounting hole and configured to be subjected to an external force. The attachment member includes an outer fitting having a tubular part arranged in the mounting hole in an inserted state. The outer fitting includes an outer circumferential projection projecting to a radially outer side of the tubular part. The strength member is an insertion-molded component having a structure in which the outer circumferential projection of the outer fitting is embedded so as to be inserted inside a circumferential wall of the mounting hole. A surface of the tubular part of the outer fitting and a surface of the outer circumferential projection are each directly fixed to the strength member with an adhesive.
    Type: Application
    Filed: June 23, 2020
    Publication date: April 1, 2021
    Applicant: SUMITOMO RIKO COMPANY LIMITED
    Inventors: Hiroyuki ICHIKAWA, Takashi KUME, Munehiro WADA
  • Publication number: 20210094031
    Abstract: A silicone member used for a micro device and a micro device which achieve both electrification suppression and light transmittance are provided. The silicone member is used as a micro device and has a holding part for holding samples, or defines the holding part through the combination with a counterpart member. The silicone member includes a silicone material which has silicone and an ionic conductive agent, and the content of the ionic conductive agent is 0.01 part by mass or higher and 1 part by mass or lower with respect to 100 parts by mass of the silicone. The micro device includes the silicone member.
    Type: Application
    Filed: September 15, 2020
    Publication date: April 1, 2021
    Applicant: Sumitomo Riko Company Limited
    Inventors: Koji MORIHARA, Katsumi OKASHITA, Yasunori NIMURA, Kazumi YOSHIDA
  • Patent number: 10961750
    Abstract: A cover unit includes a first divisional cover, and a second divisional cover. The first divisional cover and second divisional cover include a first locking portion and second locking portion, respectively. The first locking portion and second locking portion are made of an elastomer. The first locking portion and second locking portion lock to one another to couple the first divisional cover to the second divisional cover, or vice versa. The first locking portion includes a prong-shaped main tab. The second locking portion includes a main bore into which the main tab is insertable. The main tab includes a main claw disposed on the leading-end side, and locked to the main bore to inhibit the main tab from coming off from the main bore.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: March 30, 2021
    Assignee: Sumitomo Riko Company Limited
    Inventors: Hiroyuki Kondo, Kenneth Carrier, Koichiro Iwanaga
  • Patent number: 10942472
    Abstract: An electrophotography device development roller in which an increase in the electric charge of a toner is suppressed is provided. This electrophotography device development roller 10 is provided with a shaft 12, an elastic layer 14 formed on the outer circumference of the shaft 12, and a surface layer 16 formed on the outer circumference of the elastic layer 14. The surface layer 16 contains components (a) to (c) below. Component (a) a binder comprising acrylonitrile-butadiene rubber having an acrylonitrile amount of 30 mass % or more; component (b) an ion-conducting agent comprising at least one selected from a phosphonium salt and a pyridinium salt; and component (c) an electric charge regulator comprising an acrylic polymer having a silicone group or fluorine-containing group and a cationic group.
    Type: Grant
    Filed: June 19, 2020
    Date of Patent: March 9, 2021
    Assignee: Sumitomo Riko Company Limited
    Inventors: Kengo Fujii, Shuichi Egawa, Takeru Horiuchi
  • Patent number: 10942482
    Abstract: A method for manufacturing a blade for electrophotographic devices and a blade for electrophotographic devices are provided. The method includes: an impregnation step of impregnating, from the surface of at least a part of a blade-shaped substrate containing urethane rubber, with a blocked isocyanate in which an isocyanate group is blocked with a blocking agent, wherein the part includes a portion that comes into contact with a mating member; and a curing step of dissociating the blocking agent from the blocked isocyanate impregnated into the substrate in the impregnation step, and then curing the released isocyanate in the substrate to form a cured portion in at least the part of the substrate including the portion that comes into contact with the mating member. In the method, the isocyanate released from the blocked isocyanate includes an aromatic isocyanate.
    Type: Grant
    Filed: July 8, 2020
    Date of Patent: March 9, 2021
    Assignee: Sumitomo Riko Company Limited
    Inventors: Shimpei Miyagawa, Yoshihiro Saito
  • Publication number: 20210062888
    Abstract: A hydraulic mount is provided and includes: an inner core, a cage that surrounds the inner core, an elastomer body that extends between the inner core and the cage and elastically connects them to each other, and an outer sleeve that encloses the cage. The elastomer body has a first circumferential fluid chamber recess and a second circumferential fluid chamber recess. The first fluid chamber recess and the second fluid chamber recess are each limited in a radially outwards direction by the outer sleeve to form a first fluid chamber and a second fluid chamber. The elastomer body is configured to be substantially undercut-free in an axial direction on its axial end faces. The elastomer body and the cage are configured to be substantially undercut-free in the region of the first fluid chamber recess and the second fluid chamber recess, at least in two predetermined, mutually opposite radial directions.
    Type: Application
    Filed: August 13, 2020
    Publication date: March 4, 2021
    Applicant: Sumitomo Riko Company Limited
    Inventors: Jozsef Kondor, Dennis Leip
  • Publication number: 20210054167
    Abstract: Provided is a conductive roll for an electrophotographic machine. The conductive roll is a charging roll and includes a shaft body, and an elastic body layer formed on an outer periphery of the shaft body. The elastic body layer is a crosslinked body of a composition containing a diene-based polymer (a), a sulfur or peroxide crosslinking agent (b), carbon black (c), and a coupling agent (d). (c) has a specific surface area of 40 to 300 m2/g. (d) is a coupling agent having a NHR1 group and a SSO3H group, or a coupling agent having a NHR1 group and an ene structure (where R1 is H or a hydrocarbon group having 1 to 8 carbon atoms). The contents of (c) and (d) in the composition are respectively 10 to 45 parts by mass and 0.5 to 20 parts by mass with respect to 100 parts by mass of (a).
    Type: Application
    Filed: November 4, 2020
    Publication date: February 25, 2021
    Applicant: Sumitomo Riko Company Limited
    Inventors: Shinkichi KASHIHARA, Takeru HORIUCHI, Naoki AKIRA
  • Publication number: 20210048086
    Abstract: In an anti-vibration apparatus having a bracket where an anti-vibration apparatus body in which a first mounting member and the second mounting member are connected by a body rubber elastic body is horizontally mounted to the bracket by fitting parts disposed on two sides of a width direction of the second mounting member in the anti-vibration apparatus body to fitting grooves disposed on opposite inner surfaces on two sides of a width direction of the bracket, a locking hole is provided on a deep wall part located on a deep side in a mounting direction of the second mounting member in the bracket, and a locking part is disposed at a tip portion in the mounting direction of the second mounting member to the bracket, and prevents return in a direction opposite to the mounting direction by inserting and locking the locking part to the locking hole.
    Type: Application
    Filed: November 5, 2020
    Publication date: February 18, 2021
    Applicant: Sumitomo Riko Company Limited
    Inventors: Hiroki KONDO, Kenji OKI
  • Publication number: 20210033167
    Abstract: A fluid-filled vibration damping device including: primary and auxiliary liquid chambers; a partition provided between the two chambers; and a movable plate supported movably in a plate thickness direction thereof by the partition. The movable plate receives liquid pressure of the two chambers on its opposite faces so as to constitute a liquid pressure absorber. The partition includes at least one communication hole opening onto its surface facing the movable plate. The movable plate includes at least one elastic protrusion projecting toward the communication hole. The elastic protrusion includes a peripheral wall to be pressed in compression and shear directions and be elastically deformed to a radially inner side of the communication hole as well by coming into contact with a wall portion of the communication hole due to movement of the movable plate in the plate thickness direction.
    Type: Application
    Filed: October 19, 2020
    Publication date: February 4, 2021
    Applicant: SUMITOMO RIKO COMPANY LIMITED
    Inventor: Ryota ISHIKAWA
  • Publication number: 20210031660
    Abstract: An armrest includes a cable to be connected to a seat-side cable arranged on a seat, and a body member that is mountable on the seat and includes a routing section therein in which the cable is arranged. The cable includes an arranged portion that is arranged in the routing section and a connecting operation section that extends outside the routing section when being connected to the seat-side cable. The connecting operation section is arranged in the routing section when the body member is mounted on the seat.
    Type: Application
    Filed: January 24, 2019
    Publication date: February 4, 2021
    Applicants: AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD., SUMITOMO RIKO COMPANY LIMITED, TOKAI CHEMICAL INDUSTRIES, LTD.
    Inventors: Satoshi YAMAMOTO, Makoto HIGASHIKOZONO, Kaho HAYASHI, Hideki OSHIMA, Takahiko ENDO, Keiji MAKINO, Jun JIN, Takemasa OKUMURA
  • Publication number: 20210030157
    Abstract: An armrest according to the technology described herein includes a bracket, an armrest body, a device connecting port, an armrest-side connector, and a cable. The bracket is fixed to a seat frame. The armrest body is attached to the bracket to be rotatable. The device connecting port is exposed through an outer surface of the armrest body. The armrest-side connector is fixed to the seat frame at a position different from the bracket. The cable includes an end connected to the device connecting port and an end connected to an armrest-side connector. The armrest body includes a cable retaining portion through which the cable is passed and in which the cable is retained. Any one of the bracket and the armrest body includes a hole (an elongated hole) that allows movement of the cable along with rotation of the armrest body.
    Type: Application
    Filed: January 23, 2019
    Publication date: February 4, 2021
    Applicants: AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD., SUMITOMO RIKO COMPANY LIMITED, TOKAI CHEMICAL INDUSTRIES, LTD.
    Inventors: Satoshi YAMAMOTO, Makoto HIGASHIKOZONO, Kaho HAYASHI, Hideki OSHIMA, Takahiko ENDO, Keiji MAKINO, Jun JIN, Takemasa OKUMURA
  • Publication number: 20210025475
    Abstract: A vibration absorber for absorbing a vibration of a vibrating component is provided and includes: a spring system and an absorber mass arranged on the spring system. The spring system includes: a first spring element with a first core, and a second spring element with a second core. The first spring element is arranged on the second spring element such that the second core borders the first core, and the vibration absorber can be fastened using a fixing element to the vibrating component in which the vibration is to be absorbed. Furthermore, a method of producing the vibration absorber is further provided.
    Type: Application
    Filed: July 20, 2020
    Publication date: January 28, 2021
    Applicant: Sumitomo Riko Company Limited
    Inventors: Jörg DITZEL, Sebastian BÖS
  • Patent number: 10895301
    Abstract: A fluid-filled vibration-damping device including: a pressure-receiving chamber with a non-compressible fluid filled therein; an equilibrium chamber with the non-compressible fluid filled therein; an orifice passage connecting the pressure-receiving chamber and the equilibrium chamber with each other; a relief configured to open a short-circuit passage by an action of a negative pressure occurring in the pressure-receiving chamber upon input of an impact load so as to connect the pressure-receiving chamber with the equilibrium chamber so that cavitation is suppressed; and at least one leak passage provided at a part of the short-circuit passage in the relief, the at least one leak passage keeping a communication state between the pressure-receiving chamber and the equilibrium chamber with a smaller passage cross section than that of the orifice passage, even when the short-circuit passage is not opened.
    Type: Grant
    Filed: January 18, 2019
    Date of Patent: January 19, 2021
    Assignee: SUMITOMO RIKO COMPANY LIMITED
    Inventors: Ryota Ishikawa, Takayoshi Yasuda, Syuya Sonobe
  • Patent number: 10876572
    Abstract: The invention relates to a half shell for a torsion bar bearing (10, 10A), comprising: a half-shell body (1, 1A, 1B, 1C, 1D, 1E) formed in one piece and along a body axis (A); and at least one stiffening device (8, 8A, 8B, 8C, 8D, 8E) adapted to increase a rigidity of the half-shell body (1, 1A, 1B, 1C, 1D, 1E). The invention relates further to a torsion bar bearing (10, 10A) comprising: at least one first half shell and at least one second half shell, wherein at least one of the at least one half shell is disposed opposite to at least one of the at least one second half shell with respect to a torsion bar axis, and to a method of supporting a torsion bar.
    Type: Grant
    Filed: July 31, 2019
    Date of Patent: December 29, 2020
    Assignee: Sumitomo Riko Company Limited
    Inventors: Martin Münch, Jörg Ditzel, Valeri Becker
  • Publication number: 20200399084
    Abstract: Provided is a paper feed roller in which paper conveyance failure is suppressed over a long period of time. The paper feed roller is a paper feed roller 10 including a shaft body 12 and an elastic body layer 14 formed on an outer periphery of the shaft body 12. A plurality of convex portions 16 forming surface unevenness is arranged on a peripheral surface of the elastic body layer 14. The contact area of the entire parts in contact with a glass surface when a glass plate is pressed against the peripheral surface of the paper feed roller 10 with a load of 0.5 to 2.3 N per centimeter in an axial direction is 1.0 to 15% of the nip area with the glass surface.
    Type: Application
    Filed: September 8, 2020
    Publication date: December 24, 2020
    Applicant: Sumitomo Riko Company Limited
    Inventor: Kazushi YAMAGUCHI
  • Publication number: 20200386290
    Abstract: An electromagnetic actuator including: a mover; a stator; at least one coil provided to the stator and arranged on an outer periphery of the mover, the coil being configured to be energized to generate an electromagnetic force that exerts a driving force on the mover; at least one yoke member surrounding the coil, the yoke member being constituted by a plurality of yoke segments; and a mold resin filling a space between the yoke segments and the coil, the mold resin fixing the yoke segments to each other. The mold resin extends to an outer peripheral surface of the yoke member and forms an outside resin layer.
    Type: Application
    Filed: August 25, 2020
    Publication date: December 10, 2020
    Applicant: SUMITOMO RIKO COMPANY LIMITED
    Inventors: Hironori KOYAMA, Tomohiro KANAYA
  • Patent number: 10857850
    Abstract: A stabilizer bushing installed on a stabilizer bar is made of two divided parts of rubber or the like to prevent or decrease generation of a gap in a bonding surface. The stabilizer bushing installed on an outer periphery of the stabilizer bar by adhesion includes divided rubber bushings of an upper rubber bushing and a lower rubber bushing. Before adhesion, both end portions of the upper and lower rubber bushings, respectively, in a circumferential direction are tapered so that an overlapping amount between the upper and lower rubber bushings increases toward the outer periphery side of the bushings. After adhesion, a bonding surface is bonded by pressure.
    Type: Grant
    Filed: November 5, 2018
    Date of Patent: December 8, 2020
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, Sumitomo Riko Company Limited
    Inventors: Yuji Homma, Taisuke Nishimura, Masami Endo, Norimasa Kuki, Daiki Mimpo, Ryusuke Yamada
  • Patent number: 10859938
    Abstract: The present disclosure provides a charging member for electrophotographic equipment capable of providing constant and excellent uniform chargeability over a long period of time from low-temperature and low-humidity through high-temperature and high-humidity environments, while suppressing bleeding. A charging member for electrophotographic equipment includes an elastic layer and a surface layer formed around the elastic layer. The elastic layer includes the following (a) through (c): (a) an ion conducting agent that is solid at room temperature; (b) an ion conducting agent that is liquid at room temperature; and (c) an electron conducting agent with an average grain diameter of 25 to 90 nm and a DBP absorption of 152 ml/100 g or below.
    Type: Grant
    Filed: November 6, 2019
    Date of Patent: December 8, 2020
    Assignee: Sumitomo Riko Company Limited
    Inventors: Yoshihiro Saito, Takeru Horiuchi, Shinkichi Kashihara