Patents Assigned to Tokai Rubber Industries
  • Patent number: 8609200
    Abstract: In a hose having a resin layer as an inner layer, a plasma treatment is performed on the inner surface of the inner layer and a connecting portion of an end part of the hose to thereby perform surface modification. Then, a sealing layer made of an elastic material is coated on and bonded to the inner surface of the connecting portion.
    Type: Grant
    Filed: April 6, 2009
    Date of Patent: December 17, 2013
    Assignee: Tokai Rubber Industries, Ltd.
    Inventors: Tomoki Inoue, Kazutaka Katayama
  • Patent number: 8596690
    Abstract: A quick connector capable of surely confirming that a pipe body is engaged by a retainer when an elastically-deformable claw of the retainer and an elastically-deformable claw of a checker are adjacently arranged in an axial direction. Checker-axis direction elastically-deformable claws have distal-end sides formed flexibly deformable in the axial direction, maintain a state of being engaged by a second engagement portion of a retainer body by having deflective deformation regulated by a retainer diameter-expanding elastically-deformable claw in a state in which the retainer diameter-expanding elastically-deformable claw is expanded diametrically, and regulate sliding from a first position with respect to the retainer body toward a set radial direction by being engaged by the second engagement portion of the retainer body.
    Type: Grant
    Filed: February 5, 2013
    Date of Patent: December 3, 2013
    Assignee: Tokai Rubber Industries, Ltd.
    Inventors: Hiroshi Yamada, Kazushige Sakazaki, Takahiro Shibata, Ryo Ikegami, Hisashi Terayama
  • Patent number: 8573569
    Abstract: An active vibration damper including: an inner shaft member provided to a movable member; an outer tube member provided to a stator; a pair of leaf springs elastically connecting axially both sides of the inner shaft member and the outer tube member so as to make a linear actuator operatable by itself; an elastic connecting rubber connecting the inner shaft member and the outer tube member; a mass body holding portion provided to the inner shaft member for holding an additional mass body that is disposed further outwardly than the elastic connecting rubber; and a housing having a structure dividable in an axial direction in which respective openings are secured to each other with an annular seal being interposed therebetween at an outer peripheral side of the elastic connecting rubber.
    Type: Grant
    Filed: April 5, 2010
    Date of Patent: November 5, 2013
    Assignee: Tokai Rubber Industries, Ltd.
    Inventors: Koichi Hasegawa, Atsushi Muramatsu, Tetsuyoshi Shibata, Hironori Koyama
  • Patent number: 8573570
    Abstract: A fluid-filled vibration damping device including: a pressure-receiving chamber and an equilibrium chamber disposed on either side of a partition plate, while being connected through a first orifice passage; a moveable film arranged to either a pressure-receiving chamber side or an equilibrium chamber side of the partition plate while being spaced away therefrom to define therebetween an intermediate chamber; a second orifice passage connecting the intermediate chamber and one of the pressure-receiving and the equilibrium chambers while being tuned to higher frequency than the first orifice passage; and a flow straightening plate arranged in opposition to the moveable film at least at one of the intermediate chamber side and an opposite side thereof, the flow straightening plate having a plurality of flow straightening apertures opening towards the moveable film and furnished with a flow limiting member.
    Type: Grant
    Filed: February 18, 2010
    Date of Patent: November 5, 2013
    Assignees: Tokai Rubber Industries, Ltd., Toyota Jidosha Kabushiki Kaisha
    Inventors: Hiroyuki Ichikawa, Yuichi Ogawa, Naoki Furumachi, Katsuhiro Sakurai, Nobuya Yoshida
  • Patent number: 8555931
    Abstract: Provided is an in-tank tube excellent in pressure-resisting performance. The in-tank tube is an in-tank tube (1) for an automotive fuel of a monolayer structure, the in-tank tube (1) for an automotive fuel being installed in a fuel tank (2) and having a construction that absorbs displacement of the fuel tank (2) and vibration of a fuel pump (5). Further, the in-tank tube (1) for an automotive fuel is formed into a monolayer structure formed of a resin material using an aliphatic polyamide resin as a main component, and has the following pressure-resisting characteristic (X): (X) when silicone oil is charged as a pressurizing medium into the in-tank tube immersed in a test liquid (Fuel C:methanol=85:15 (volume basis)) at 80° C. for 168 hours, both ends of the in-tank tube are each blocked with a test pipe, and a pressure test is performed at a rate of pressure increase of 1.0 MPa/min and room temperature, a pressure (burst pressure) at which the in-tank tube bursts or the test pipe disconnects is 2.
    Type: Grant
    Filed: July 28, 2011
    Date of Patent: October 15, 2013
    Assignee: Tokai Rubber Industries, Ltd.
    Inventors: Kazutaka Katayama, Koji Mizutani, Keita Asai, Tokunori Kobayashi
  • Patent number: 8556239
    Abstract: A fluid filled type vibration damping device including: an obstructing rubber elastic plate disposed so as to obstruct a communication aperture that connects a pressure receiving chamber and an equilibrium chamber; contact retaining portions arranged on an outer peripheral edge of the rubber plate and held in contact against a partition member; an elastic deformation zone arranged circumferentially between the contact retaining portions of the rubber plate so as to undergo elastic deformation on a basis of pressure differential between the pressure receiving chamber and the equilibrium chamber to be spaced away from the partition member to cause the aperture to open up; and a non-linearizing member provided such that the elastic characteristics of the elastic deformation zone become more rigid in a non-linear manner in association with increase in an amount of its deformation.
    Type: Grant
    Filed: June 22, 2009
    Date of Patent: October 15, 2013
    Assignee: Tokai Rubber Industries, Ltd.
    Inventors: Kei Okumura, Yasuhiro Komiya
  • Patent number: 8556240
    Abstract: A fluid-filled vibration damping device wherein a partition member is formed by fitting an inner orifice member inside an outer orifice member with the members relatively displaceable. An orifice-defining window is provided on either one of an inside peripheral face of the outer orifice member and an outside peripheral face of the inner orifice member. An orifice passage is defined utilizing a zone being produced through partial covering of the orifice-defining window by the other of the outer orifice member and the inner orifice member. The covered zone of the orifice-defining window changes through relative displacement of the inner orifice member and the outer orifice member, so that a passage length along the orifice passage changes in association with change of the covered zone of the orifice-defining window.
    Type: Grant
    Filed: May 21, 2009
    Date of Patent: October 15, 2013
    Assignee: Tokai Rubber Industries, Ltd.
    Inventors: Koichi Hasegawa, Seiichiro Yamamoto
  • Patent number: 8545648
    Abstract: Disclosed is a method for producing a heat insulating laminate structure having an excellent solar radiation shielding capability as well as an excellent radio wave transparency. The method includes placing a transparent laminate film between two transparent substrates, the transparent laminate film having on at least one side of a transparent polymer film a laminated layer structure in which a metal oxide layer containing an organic component and a metal layer are laminated and grooves having widths of 30 ?m or less are formed with dividing the metal layer; bonding the two substrates to each other through the transparent laminate film under application of a pressure; and promoting division of the metal layer in the transparent laminate film by the applied pressure to increase an overall surface resistance.
    Type: Grant
    Filed: August 29, 2012
    Date of Patent: October 1, 2013
    Assignee: Tokai Rubber Industries, Ltd.
    Inventors: Hiroki Inagaki, Tetsuya Takeuchi, Tetsuji Narasaki, Masataka Inuzuka, Osamu Goto
  • Patent number: 8539627
    Abstract: A body position and pressure control apparatus is provided capable of highly accurately detecting body pressure distribution without causing a sense of discomfort for a sleeper, changing body positions, and distributing body pressure. The body position and pressure control apparatus has a mattress provided with a plurality of divided portions and supporting a sleeper, an elastomer sensor, and a body pressure adjuster controlling each of the divided portions based on an instruction from the elastomer sensor and thereby changing the body pressure distribution of the sleeper. The elastomer sensor has a sheet sensor main body and a calculator, the sensor main body having an elastomer sensor thin film, a plurality of electrodes, and a plurality of detectors corresponding to the divided portions provided between the electrodes.
    Type: Grant
    Filed: December 20, 2010
    Date of Patent: September 24, 2013
    Assignee: Tokai Rubber Industries, Ltd.
    Inventors: Masaki Terawaki, Takeaki Yoshikawa, Hiroaki Ito
  • Patent number: 8534711
    Abstract: Piping unit for transporting a fuel is constructed by connecting a resin tube and a connector for connecting the resin tube to a mating pipe. The connector has a connector body including a retainer holding portion and a retainer for engaging with the mating pipe. The resin tube has a multilayered construction including an inner fuel barrier layer and an outer layer covered with a protective layer. The outer layer has a small outer diameter (od) up to 6 mm, the fuel barrier layer and the outer layer have a wall-thickness (t), and a ratio of the outer diameter (od)/the wall thickness (t) is in a range of 4 to 8.
    Type: Grant
    Filed: December 1, 2008
    Date of Patent: September 17, 2013
    Assignee: Tokai Rubber Industries, Ltd.
    Inventors: Tomoki Inoue, Masayuki Sasagawa
  • Patent number: 8517404
    Abstract: To provide a toe correct bush having excellent durability and a novel structure, the toe correct bush effectively achieving improvement in running stability during steering with a toe correction function and improvement in straight line performance with an intermediate restraining plate. A first intermediate restraining member is provided between opposing surfaces of an inner inclined portion and an outer inclined portion and is fixed to a compression rubber, the first intermediate restraining member spreading and being isolated from the opposing surfaces of the inner inclined portion and the outer inclined portion. A second intermediate restraining member is provided independent from the first intermediate restraining member between opposing surfaces of an inner flange and an outer flange and is fixed to a connecting rubber, the second intermediate restraining member spreading and being isolated from the opposing surfaces of the inner flange and the outer flange.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: August 27, 2013
    Assignee: Tokai Rubber Industries, Ltd.
    Inventors: Ryusuke Yamada, Yorikazu Nakamura
  • Patent number: 8511656
    Abstract: A member mount has an inner tubular member, an outer tubular member, and a rubber elastic body connecting the tubular members. An inner peripheral resin layer having an inner hole as a positional hole is layered on an internal peripheral surface of the inner tubular member and an outer peripheral resin layer is layered on an outer peripheral surface thereof. The resin layers are connected to each other in resin connection portions in connection holes passing through the inner tubular member in four positions in the circumferential direction at equal distances.
    Type: Grant
    Filed: October 24, 2011
    Date of Patent: August 20, 2013
    Assignee: Tokai Rubber Industries, Ltd.
    Inventor: Yuki Yahata
  • Patent number: 8492449
    Abstract: Disclosed is a photosensitive resin composition that provides an excellent water developability, drying property, and image reproducibility. The photosensitive resin composition comprises a water-dispersible latex (A), a rubber (B), a surfactant (C), a photopolymerizable monomer (D), and a photopolymerization initiator (E). A ratio of a mass of the component (C) to a total mass of the components (A), (B), and (C) is within a range of 0.1 to 20%. A ratio of a mass of the component (A) to a total mass of the components (A) and (B) is within 20 to 90%. A size of a dispersed phase consisting mainly of the component (B) is 10 ?m or smaller.
    Type: Grant
    Filed: July 26, 2012
    Date of Patent: July 23, 2013
    Assignee: Tokai Rubber Industries, Ltd.
    Inventors: Daisuke Inoue, Koki Matsuoka
  • Patent number: 8474800
    Abstract: A fluid filled type vibration damping device including an elastic rubber body elastically connecting an inner shaft member and an outer tube member. The elastic rubber body has a solid rubber wall that includes inside face recesses and outside face recesses respectively formed to either side of the inner shaft member in an axis-perpendicular direction so that a pair of thin portions and a pair of thick portions respectively situated in opposition along mutually orthogonal axes lying in axis-perpendicular directions are formed in the solid rubber wall. A deepest part of the inside face recesses is situated towards an axial small diameter side of the solid rubber wall with respect to an deepest part of the outside face recesses, with the inside face recesses and the outside face recesses overlapping one another in the axis-perpendicular direction of the solid rubber wall.
    Type: Grant
    Filed: September 9, 2009
    Date of Patent: July 2, 2013
    Assignee: Tokai Rubber Industries, Ltd.
    Inventors: Kei Okumura, Noritaka Matsuoka
  • Patent number: 8474799
    Abstract: A fluid filled type vibration damping device including: a partition member having a communication passage connecting a pressure receiving and equilibrium chambers; an obstructing rubber elastic plate juxtaposed against the communication passage from a pressure receiving chamber side, adapted to obstruct the communication passage, and arranged to be exposed to pressure of the pressure receiving and the equilibrium chamber at both faces; and a constraining member provided for retaining an outer peripheral section of the obstructing rubber elastic plate in contact against the partition member at multiple locations. The constraining member provides an opening/closing control member operated to induce the obstructing rubber elastic plate to push against the partition member and close off the communication passage, and to induce elastic deformation of the obstructing rubber elastic plate to be separated from the partition member.
    Type: Grant
    Filed: November 26, 2008
    Date of Patent: July 2, 2013
    Assignee: Tokai Rubber Industries, Ltd.
    Inventors: Wakako Michiyama, Kei Okumura
  • Patent number: 8465010
    Abstract: A vibration damping rubber bushing including: an inner cylindrical member; a main rubber elastic body bonded to an outer circumferential face of the inner cylindrical member; a plurality of anti-slip projections provided on at least one of axial end faces of the inner cylindrical member that project axially outward from the axial end face and extend with ribbed shape in a diametrical direction on the axial end face to produce a spokewise pattern overall; and an annular water barrier projection provided on a diametrical medial section of the at least one of the axial end faces of the inner cylindrical member, projecting axially outwardly and extending circumferentially, with the anti-slip projections being disposed to both radially inner side and radially outer side of the annular water barrier projection.
    Type: Grant
    Filed: June 23, 2010
    Date of Patent: June 18, 2013
    Assignees: Tokai Rubber Industries, Ltd., Toyota Jidosha Kabushiki Kaisha
    Inventors: Norimasa Kuki, Yoshikane Akiyama, Mitiharu Hikosaka, Kazuhiko Kato, Hitoshi Kawai, Mie Miyauchi
  • Patent number: 8455086
    Abstract: A transparent laminate film which has visible light transmittance, sunlight blocking properties, radio wave transmittance and good appearance is provided. A transparent laminate film includes a laminate structure formed on at least one side of a transparent polymer film, in which a metal oxide layer and a metal layer are laminated, the metal oxide layer containing an organic component, wherein grooves having a width of 30 ?m or less are formed in the laminate structure, and an overall surface resistance is 150 ?/? or more. Preferably, the grooves are numerous cracks, or are formed by laser processing. Further, preferably, the transparent polymer film has an easy adhesion layer formed on at least one side thereof, and the laminate structure is formed on top of the easy adhesion layer. Furthermore, preferably, the metal oxide layer containing the organic component is formed by a sol-gel method using optical energy during sol-gel curing.
    Type: Grant
    Filed: December 1, 2011
    Date of Patent: June 4, 2013
    Assignee: Tokai Rubber Industries, Ltd.
    Inventors: Masataka Inuduka, Tetsuya Takeuchi, Hiroki Inagaki, Tetsuji Narasaki, Taiji Nishitani
  • Patent number: 8454002
    Abstract: A fluid filled vibration damping device having an orifice passage formed in a partition member to connect a pressure receiving chamber and an equilibrium chamber, wherein a first end section of the orifice passage extends in along a plane of the partition member, and a communication hole is formed to bend at a right angle from the first end of the orifice passage and open towards the pressure receiving chamber to form a dead water region by orthogonal wall faces of a terminal end face and a bottom face of the orifice passage in a connecting corner section of the orifice passage with the communication hole. A shunt hole of smaller cross-sectional area than the orifice passage and the communication hole is formed in a bottom wall so that the pressure receiving chamber and the equilibrium chamber communicate through the shunt hole in the dead water region.
    Type: Grant
    Filed: July 31, 2008
    Date of Patent: June 4, 2013
    Assignees: Tokai Rubber Industries, Ltd., Honda Motor Co., Ltd.
    Inventors: Naoki Nishi, Tetsuya Miyahara
  • Patent number: 8451011
    Abstract: An object of the present invention is to provide an electrostatic capacity-type sensor which is excellent in durability and can detect bending-deformation. An electrostatic capacity-type sensor comprises a dielectric film made of an elastomer and a pair of electrodes arranged via the dielectric film, and detects the deformation based on a change in the electrostatic capacity between the pair of electrodes. The pair of electrodes have an elastomer and a conductive filler blended in said elastomer, and are expansible/contractible depending on the deformation of the dielectric film, and exhibit a small change in the conductivity even when expanded and contracted.
    Type: Grant
    Filed: June 3, 2008
    Date of Patent: May 28, 2013
    Assignee: Tokai Rubber Industries, Ltd.
    Inventors: Tomonori Hayakawa, Kazunobu Hashimoto
  • Patent number: 8446075
    Abstract: To provide a conductive film that is flexible, extendable and contractible, and for which the electrical resistance hardly increases even when the conductive film is extended. The conductive film contains an elastomer and metallic filler particles, and satisfies a condition (A) [an average value of reference numbers is 0.8 (1/?m) or more, or the metallic filler particles include flake-like metallic filler particles having a thickness of 1 ?m or less and an aspect ratio of 26 or more and the average value of the reference numbers is 0.4 (1/?m) or more] and a condition (B) [a number of unit areas for which an area percentage of the elastomer is 60% or more is 20 or more], the condition (A) being a conductivity indicator and the condition (B) being a flexibility indicator.
    Type: Grant
    Filed: January 26, 2012
    Date of Patent: May 21, 2013
    Assignee: Tokai Rubber Industries, Ltd.
    Inventors: Wataru Takahashi, Hitoshi Yoshikawa, Jun Kobayashi