Patents Assigned to Sumitomo Riko Company Limited
  • Publication number: 20230332027
    Abstract: A multilayer body that is obtained by bonding a separator, which serves as a base material, and a lip, which serves as a sealing member, to each other by the intermediary of an adhesive layer , wherein: the lip is formed of a rubber composition that contains the component (A) described below; and the adhesive layer is formed of an adhesive that is mainly composed of the component (?) described below. Consequently, this multilayer body exhibits high acid-resistant adhesion at high temperatures, thereby having excellent long-term bonding reliability and excellent sealing properties. (A): A rubber component that is composed of at least one of an ethylene-propylene-diene rubber and an ethylene-butene-diene rubber. (?): A copolymerized oligomer-type silane coupling agent that comprises a specific hydrophilic functional group and a specific hydrophobic functional group at a specific ratio.
    Type: Application
    Filed: June 13, 2023
    Publication date: October 19, 2023
    Applicant: Sumitomo Riko Company Limited
    Inventors: Shota TANIGUCHI, Kenji YAMAMOTO
  • Publication number: 20230323930
    Abstract: A fluid-filled vibration damping device including: a pressure-receiving chamber; an equilibrium chamber; a partition partitioning the two chambers while including a communication aperture connecting the two chambers; and a rubber elastic plate arranged in the partition while covering the communication aperture. The rubber elastic plate includes: an outside contact-retainer part provided partially along a circumference at an outer edge of the rubber elastic plate while being held overlapped with the partition; an elastic deformation zone provided circumferentially between the outside contact-retainer part to become apart from the partition based on a pressure differential between the two chambers thereby allowing a fluid flow through the communication aperture; and a radial reinforcing rib projecting from a surface of the rubber elastic plate and extending radially outward from an inside contact-retainer part that is held overlapped with the partition toward the elastic deformation zone.
    Type: Application
    Filed: February 22, 2023
    Publication date: October 12, 2023
    Applicant: SUMITOMO RIKO COMPANY LIMITED
    Inventor: Junichi NOZAKI
  • Publication number: 20230314980
    Abstract: In a charging roll, grooves regularly defining spirals are formed on an elastic body layer, with a groove width of 4 ?m to 280 ?m and a groove depth of 2 ?m to 30 ?m. On an outer peripheral surface of the elastic body layer, an area ratio between an area of a bottom surface of the groove and an area of a plane part is 0.3 to 2.4. The surface layer includes a binder polymer and a roughness forming particle. The roughness forming particle is arranged on the plane part and the groove. A surface roughness of the surface layer on the groove is 2 ?m to 16 ?m. A surface roughness of the entire surface layer is 5 ?m to 26 ?m. A thickness of the binder polymer covering the roughness forming particle on the groove is greater than that on the plane part.
    Type: Application
    Filed: June 6, 2023
    Publication date: October 5, 2023
    Applicant: Sumitomo Riko Company Limited
    Inventors: Yoshihiro SAITO, Hiroshi UKAI, Masanori ISHIDA
  • Patent number: 11774875
    Abstract: The disclosure provides a development roll for electrophotographic apparatuses. The development roll for electrophotographic apparatuses includes: a shaft; an elastic layer formed on an outer circumferential surface of the shaft; a surface layer formed on an outer circumferential surface of the elastic layer; and an end protection layer formed on an outer circumferential surface of the surface layer at both ends in an axial direction. The end protection layer contains a binder polymer and a surface modification agent that has a cyano group.
    Type: Grant
    Filed: May 5, 2022
    Date of Patent: October 3, 2023
    Assignee: Sumitomo Riko Company Limited
    Inventors: Satoshi Endo, Kengo Fujii, Kentaro Imai, Satoshi Tatsumi
  • Patent number: 11773942
    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: Grant
    Filed: August 13, 2020
    Date of Patent: October 3, 2023
    Assignee: Sumitomo Riko Company Limited
    Inventors: Jozsef Kondor, Dennis Leip
  • Publication number: 20230302764
    Abstract: This thermal insulation material is provided with: thermal insulation layers, each of which has a porous structure having a skeleton that is composed of a plurality of particles connected with each other, while having pores inside and hydrophobic portions at least on the surface among the surface and the inside; and a pair of functional layers which are arranged on both sides of the thermal insulation layers in the thickness direction. The pair of functional layers have the same properties that include at least one of fire resistance and radiant heat dissipation properties.
    Type: Application
    Filed: May 4, 2023
    Publication date: September 28, 2023
    Applicant: Sumitomo Riko Company Limited
    Inventors: Yutaro TAGUCHI, Yuuki SAITOU, Naoki KATAYAMA
  • Publication number: 20230296153
    Abstract: A first rotation limiting surface where a curvature is partially reduced in a circumferential direction is provided on an outer circumferential surface of an inner shaft fitting. A press-fit fitting is installed to the outer circumferential surface of the inner shaft fitting including the first rotation limiting surface. A second rotation limiting surface where a curvature is partially reduced in the circumferential direction corresponding to the first rotation limiting surface is provided on an inner circumferential surface of an insertion hole of the press-fit fitting. The first and second rotation limiting surfaces are mutually superimposed in a press-fit state. A press-fit guide surface located on a central side of the inner shaft fitting to the first rotation limiting surface and having a width dimension greater than the first rotation limiting surface is axially outer of the first rotation limiting surface on the outer circumferential surface of the inner shaft fitting.
    Type: Application
    Filed: February 7, 2023
    Publication date: September 21, 2023
    Applicant: Sumitomo Riko Company Limited
    Inventor: Tatsunori Taniguchi
  • Patent number: 11760244
    Abstract: An armrest includes a frame, a mounting portion included in the frame and having a mounting surface with which the mounting portion is mounted on a bracket of a seat, an armrest-side wire harness arranged in the frame, and an armrest-side connector connected to the armrest-side wire harness and being open in a direction from the mounting surface toward the bracket.
    Type: Grant
    Filed: March 3, 2020
    Date of Patent: September 19, 2023
    Assignees: AUTONETWORKS TECHNOLOGIES, LTD., SUMITOMO WIRING SYSTEMS, LTD., SUMITOMO ELECTRIC INDUSTRIES, LTD., SUMITOMO RIKO COMPANY LIMITED, TOKAI CHEMICAL INDUSTRIES, LTD.
    Inventors: Satoshi Yamamoto, Kaho Hayashi, Hideki Oshima, Takemasa Okumura, Takahiko Endo, Jun Jin, Keiji Makino
  • Patent number: 11752501
    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: Grant
    Filed: September 15, 2020
    Date of Patent: September 12, 2023
    Assignee: Sumitomo Riko Company Limited
    Inventors: Koji Morihara, Katsumi Okashita, Yasunori Nimura, Kazumi Yoshida
  • Patent number: 11753519
    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: Grant
    Filed: November 4, 2020
    Date of Patent: September 12, 2023
    Assignee: Sumitomo Riko Company Limited
    Inventors: Shinkichi Kashihara, Takeru Horiuchi, Naoki Akira
  • Publication number: 20230278413
    Abstract: In a fluid-filled vibration damping device in which multiple fluid chambers filled with a magnetic functional fluid communicate with each other by an orifice path, and a magnetic unit applying a magnetic field to the orifice path is provided in a state of being externally inserted to an outer cylindrical member, the magnetic unit includes a magnetic field generation part forming a magnetic field and a magnetic path formation part inducing a magnetic flux, the magnetic field is applied from a magnetic gap part of the magnetic path formation part arranged on an outer circumference of the orifice path to the orifice path, and on an outer circumferential surface of the outer cylindrical member, an installation part to which an outer mounting member realizing linking between the outer cylindrical member and a vibration damping linking target member is installed is biased from the magnetic field generation part in an axial direction.
    Type: Application
    Filed: November 8, 2022
    Publication date: September 7, 2023
    Applicant: Sumitomo Riko Company Limited
    Inventors: Masaaki Hirano, Takashi Kume
  • Patent number: 11750981
    Abstract: Provided is a transducer that can be manufactured without using a volatile adhesive or an organic solvent. A transducer is provided with: a first electrode sheet provided with a plurality of first through-holes; a dielectric layer, of which a first surface is disposed on the first-electrode-sheet side; and a first fusion-bonding layer formed from a fusion-bonding material, the first fusion-bonding layer joining together, by fusion bonding of the fusion-bonding material, a boundary region between a body portion of the dielectric layer and a first inner surface of the first electrode sheet and a boundary region between the body portion of the dielectric layer and a first inner circumferential surface of at least some of the plurality of first through-holes.
    Type: Grant
    Filed: October 8, 2019
    Date of Patent: September 5, 2023
    Assignee: Sumitomo Riko Company Limited
    Inventors: Katsuhiko Nakano, Masaki Nasu, Koichi Hasegawa, Shinya Tahara
  • Publication number: 20230272740
    Abstract: A soundproof cover which covers a target object is provided with: a sound absorbing sheet which is formed in a planar shape by means of a sound absorbing material and which covers the surface of the target object; and a reinforcing member which is disposed in a position engaging with engaged portions of the target object, and which positions the sound absorbing sheet with respect to the target object with at least a portion of the sound absorbing sheet exposed. The reinforcing member is provided with: a first reinforcing portion, which is an elongate member and which is disposed in a position engaging with a first engaged portion of the target object; and second reinforcing portions, which are elongate members and which are disposed in different positions to the first reinforcing portion.
    Type: Application
    Filed: May 8, 2023
    Publication date: August 31, 2023
    Applicant: Sumitomo Riko Company Limited
    Inventors: Kazuyoshi Onishi, Akio YABU, Junki OWAKI, Satoshi MAKIMURA, Koki KANEDA, Koji TOMIYAMA, Takashi MIYANAGA, Yukio HATANAKA
  • Publication number: 20230272838
    Abstract: A vibration damping device including a main unit including first and second attachments connected by a rubber body, the second attachment including metallic first and second connectors inserted into metallic first and second grooves of a bracket. The metal is exposed on outer and lower faces of the first connector to be in metal-to-metal contact with groove-inside bottom and lower faces of the first groove. An upper urging rubber on the first connector contacts a groove-inside upper face of the first groove. The metal is exposed on a lower face of the second connector to be in metal-to-metal contact with a groove-inside lower face of the second groove. Upper and outer urging rubbers on the second connector contact groove-inside upper and bottom faces of the second groove. Detent engagers between the connectors and the grooves prevent dislodgment of the connectors from the grooves.
    Type: Application
    Filed: November 21, 2022
    Publication date: August 31, 2023
    Applicant: SUMITOMO RIKO COMPANY LIMITED
    Inventors: Hiroki KONDO, Kenji OKI
  • Publication number: 20230275241
    Abstract: A fuel cell assembly includes an electrode member that has a membrane electrode assembly having an electrolyte membrane and an electrode catalyst layer, and gas diffusion layers; a solid rubber gasket that is disposed in a frame shape on an outward side of the electrode member in a surface direction; and a bonding member that is disposed in a frame shape on the outward side of the electrode member in the surface direction, is bonded to the electrode member and the gasket, and integrates these. A form of bonding the bonding member to the electrode member is at least one of impregnation with the gas diffusion layers and bonding to the membrane electrode assembly. A thickness of the bonding member is equal to or larger than a thickness of the gas diffusion layer, and at least a portion on a surface of the bonding member is coated with the gasket.
    Type: Application
    Filed: May 8, 2023
    Publication date: August 31, 2023
    Applicant: Sumitomo Riko Company Limited
    Inventors: Hideya KADONO, Hideki OSHIMA, Hiroki ITAKURA
  • Publication number: 20230271493
    Abstract: A liquid-filled vibration damping device including a main unit and a bracket, the main unit including first and second attachments connected by a rubber body, and a closure member locked to the second attachment from below with a seal member sandwiched therebetween to seal a liquid chamber. The second attachment includes a pair of metallic connectors inserted into a pair of metallic grooves of the bracket. The metal is exposed on lower faces of the connectors which are pressed against groove-inside lower faces of the grooves in metal-to-metal contact. Convex parts protruding downward are provided at far-side ends of the connectors while concave parts are provided on the grooves at locations corresponding to the convex parts. Detent engagers preventing dislodgment of the connectors inserted in the grooves are constituted in metal-to-metal contact by the convex parts entering the concave parts to be engaged.
    Type: Application
    Filed: February 7, 2023
    Publication date: August 31, 2023
    Applicant: SUMITOMO RIKO COMPANY LIMITED
    Inventors: Hiroki KONDO, Kenji OKI
  • Publication number: 20230272836
    Abstract: A liquid-filled vibration damping device including a first and second attachment members elastically connected by a main rubber elastic body, and a liquid chamber sealed by a closure member attached to the second attachment member from below with a seal member interposed therebetween. The second attachment member and the closure member are attached to each other by connecting locks arranged in a circumferential direction. Each connecting lock includes a flexible locking piece projecting from one toward another of the second attachment member and the closure member while having a locking hole, and a locking claw formed on the other of the two members and hooked to the locking hole of the locking piece. The locking piece includes a guide groove extending linearly from the locking hole in a direction of projection to guide the locking claw into the locking hole.
    Type: Application
    Filed: December 7, 2022
    Publication date: August 31, 2023
    Applicant: SUMITOMO RIKO COMPANY LIMITED
    Inventors: Hiroki KONDO, Kenji OKI
  • Publication number: 20230275529
    Abstract: An electrostatic transducer (1) includes: an insulator sheet (11); a first electrode sheet (12); a lead (30); a first bonding part (61), electrically bonding the first electrode sheet (12) with a core wire (30a) of the lead (30) in a first area (Pa) where the first electrode sheet (12) and the core wire (30a) of the lead (30) are disposed overlapping each other; and a second bonding part (62), bonding the insulator sheet (11) with a coating (30b) of the lead (30) in a second area (Pb) where the insulator sheet (11) and the coating (30b) of the lead (30) are disposed overlapping each other.
    Type: Application
    Filed: May 7, 2023
    Publication date: August 31, 2023
    Applicant: Sumitomo Riko Company Limited
    Inventors: Shinya TAHARA, Masaki NASU, Katsuhiko NAKANO
  • Publication number: 20230272834
    Abstract: A tubular antivibration device includes an inner axial member and an outer tubular member that are joined by an elastic rubber main body. The inner axial member is provided with a pair of groove-shaped recesses that open on the outer peripheral surface on both sides in the lateral direction and extend in the vertical direction, and the elastic rubber main body is integrally provided with a pair of upper and lower first elastic joining parts that join the vertically opposing surfaces of the inner axial member and the outer tubular member to each other on both sides in the vertical direction and a pair of left and right second elastic joining parts that join the vertically opposing surfaces of the outer tubular member to each other through the pair of groove-shaped recesses of the inner axial member.
    Type: Application
    Filed: May 9, 2023
    Publication date: August 31, 2023
    Applicant: Sumitomo Riko Company Limited
    Inventor: Masaya HATTORI
  • Patent number: 11737710
    Abstract: A piezoelectric sensor (10) having an elongated-sheet shape includes a piezoelectric layer (11) containing an elastomer and piezoelectric particles and electrode layers (12a and 12b) which are disposed with the piezoelectric layer (11) sandwiched between the electrode layers. In the piezoelectric sensor (10), a pressure sensing region (S) has a length of 500 mm or longer in a longitudinal direction thereof; the electrode layers (12a and 12b) contain an elastomer and flaky conductive materials and are capable of elongating by 10% or more in one direction of plane directions; and when a space between one end portion (A) and the other end portion (B) of the pressure sensing region (S) in the longitudinal direction is set as a measurement zone, an electrical resistance in the measurement zone in the electrode layers (12a and 12b) is 3,000? or lower, and the specific Expression (I) is satisfied.
    Type: Grant
    Filed: December 10, 2019
    Date of Patent: August 29, 2023
    Assignee: Sumitomo Riko Company Limited
    Inventor: Wataru Takahashi