Patents Assigned to Mitsuboshi Belting
  • Toothed belt
    Patent number: 10006519
    Abstract: The present invention relates to a toothed belt containing tooth parts that are disposed at predetermined intervals along a belt longitudinal direction, a cord, and a back side that has the cord embedded therein, in which the cord contains a Lang-twisted glass fiber, an adhesion treatment layer, and an overcoat treatment layer, the overcoat treatment layer is formed on a surface of the adhesion treatment layer, the back side is composed of a rubber composition, and the rubber composition contains from 5 parts by mass to 20 parts by mass of a plasticizer based on 100 parts by mass of a rubber component.
    Type: Grant
    Filed: April 27, 2015
    Date of Patent: June 26, 2018
    Assignee: Mitsuboshi Belting Ltd.
    Inventors: Isao Ideguchi, Hiroaki Ikegami
  • Transmission belt
    Patent number: 10001193
    Abstract: The present invention relates to a power transmission belt containing a tension member extending in a belt lengthwise direction, an adhesion rubber layer in contact with at least a part of the tension member, a compression rubber layer formed on one surface of the adhesion rubber layer, and a tension rubber layer formed on other surface of the adhesion rubber layer, in which the compression rubber layer is formed of a vulcanized rubber composition containing a rubber component, a polyolefin resin and a reinforcing material, the rubber component contains a chloroprene rubber, and the reinforcing material contains a short fiber.
    Type: Grant
    Filed: March 27, 2014
    Date of Patent: June 19, 2018
    Assignee: Mitsuboshi Belting Ltd.
    Inventors: Hisato Ishiguro, Keiji Takano, Yoshihiro Miura
  • Profiled Belt and Method for Manufacturing Same
    Publication number: 20180127214
    Abstract: A profiled belt includes a belt body, a profile that is provided on a back surface of the belt body, and a fixation member that detachably fixes the profile to the belt body. The belt body includes a protrusion on the back surface. The profile includes a recess portion to which the protrusion is fitted. The fixation member fixes the profile to the belt body in a state where the protrusion has been fitted to the recess portion. The fixation member is removably inserted to the profile and the protrusion.
    Type: Application
    Filed: April 27, 2016
    Publication date: May 10, 2018
    Applicant: Mitsuboshi Belting Ltd.
    Inventors: Tomoaki Shakushiro, Akira Takenaka, Takafumi Kumada, Takahide Okazawa
  • Toothed belt driving device for bicycle
    Patent number: 9950768
    Abstract: The present invention relates to a toothed belt driving device for bicycle, in which, in drive state, the pulley groove portion of a driven pulley is in surface contact with a portion of a surface of the belt tooth portion, this portion in surface contact is present in a range positioned closer to a tooth root portion than a reference circle, the maximum value of the shortest distance between the pulley groove portion of the driven pulley and the surface of the belt tooth portion opposite to the traveling direction of the belt is 10% or more and 18% or less of the tooth pitch, a groove depth of the driven pulley is greater than the tooth height of the belt tooth portion, and the difference therebetween is 5% or more of the tooth height.
    Type: Grant
    Filed: August 19, 2014
    Date of Patent: April 24, 2018
    Assignee: Mitsuboshi Belting Ltd.
    Inventors: Susumu Osaki, Takahide Okazawa
  • Wrapped V-Belt and Method For Manufacturing Wrapped V-Belt
    Publication number: 20180080527
    Abstract: The present invention relates to a wrapped V-belt containing: a belt main body containing a compression layer containing a compression rubber layer and a fabric-laminated body layer, a tension rubber layer and a tension member buried between the compression layer and the tension rubber layer; and an outside cloth that covers a periphery of the belt main body, in which the compression layer has a plurality of notch portions not covered with the outside cloth, and the notch portion has a top disposed in the fabric-laminated body layer.
    Type: Application
    Filed: April 27, 2016
    Publication date: March 22, 2018
    Applicant: Mitsuboshi Belting Ltd.
    Inventor: Teruyoshi Imaoka
  • Belt mounting tool
    Patent number: 9915326
    Abstract: The present invention relates to a belt installation tool which is to be installed so as to cover at least a part of a first side surface of a pulley, including an attaching part attached along an outer peripheral part of the pulley, an installation part brought into contact with at least a part of the first side surface, a protection part covering at least a part of the first side surface without coming into contact therewith, and a belt holding part protruding on the protection part or on the installation part, in which the protection part covers at least a part of a part having a largest distance in a vertical direction in an area located inside the part with which the installation part comes into contact in the first side surface.
    Type: Grant
    Filed: June 19, 2014
    Date of Patent: March 13, 2018
    Assignee: Mitsuboshi Belting Ltd.
    Inventor: Yasuhito Aoki
  • Pulley Structure
    Publication number: 20180045287
    Abstract: The pulley structure (1) of the present invention includes a ventilation path (10) that is formed at a position shifted in a radial direction from a rotating axis of a first rotating body (2) and allows a spring accommodation space (8) formed between the first rotating body (2) and a second rotating body (3) and the outside to communicate with each other. At least a part of the ventilation path (10) is formed in an end cap (5) that blocks an opening portion (21) on one side of the first rotating body (2) in a rotating axis direction. The end cap (5) blocks the opening portion (21) of the first rotating body (2) such that the spring accommodation space (8) does not communicate with the outside toward the one side in the rotating axis direction other than the ventilation path (10).
    Type: Application
    Filed: February 18, 2016
    Publication date: February 15, 2018
    Applicant: Mitsuboshi Belting Ltd.
    Inventors: Katsuya Imai, Hayato Shimamura
  • Transmission Belt, Method for Manufacturing Transmission Belt, Reinforcing Fabric, and Method for Manufacturing Reinforcing Fabric
    Publication number: 20180036975
    Abstract: A power transmission belt includes a compression rubber layer that is provided on an inner circumferential side, a cog portion that is provided in at least the compression rubber layer and has cog ridges and cog valleys alternately arranged along a belt longitudinal direction, and a reinforcing fabric layer that covers a surface of the cog portion. The reinforcing fabric layer includes at least one reinforcing fabric that is bonded to surfaces of the cog ridges and the cog valleys along the belt longitudinal direction and that covers the surface of the cog portion. Both end portions of the reinforcing fabric are joined to each other at only at least one joint portion in the belt longitudinal direction. The joint portion is disposed at only a position corresponding to the cog ridge.
    Type: Application
    Filed: February 26, 2016
    Publication date: February 8, 2018
    Applicant: Mitsuboshi Belting Ltd.
    Inventors: Masakuni Yoshida, Toshihiro Nishimura, Taisuke Kimura
  • Belt Mounting Tool
    Publication number: 20170356530
    Abstract: A belt installation tool (406) of the present invention includes a pulley pressing part (407) capable of being pressed toward a side of an outer periphery of a crank pulley (2) by the tension of a V-ribbed belt (4), a protection layer (471) having elasticity and covering the pulley pressing part (407) on the side of the outer periphery of the crank pulley (2), a belt hold part (408) for hooking and holding the V-ribbed belt 4, and a belt pressing part (409) for pressing the V-ribbed belt (4) extending along the outer periphery of the crank pulley (2) against the outer periphery of the crank pulley (2).
    Type: Application
    Filed: January 29, 2016
    Publication date: December 14, 2017
    Applicant: Mitsuboshi Belting Ltd.
    Inventor: Yasuhito AOKI
  • Friction Transmission Belt and Manufacturing Method Thereof
    Publication number: 20170314641
    Abstract: The present invention relates to a frictional power transmission belt containing a compression layer having a power transmission surface, at least a part of which is capable of coming into contact with a pulley, in which the compression layer contains a polymer component and a polyvinyl alcohol-based resin.
    Type: Application
    Filed: October 30, 2015
    Publication date: November 2, 2017
    Applicant: Mitsuboshi Belting Ltd.
    Inventors: Yuji Kamba, Hiroki Imai
  • Power-Transmitting Friction Belt and Method for Manufacturing Same
    Publication number: 20170284504
    Abstract: The present invention relates to a frictional power transmission belt (1) having a frictional power transmission surface in which the frictional power transmission surface is covered with a fibrous member (5) at least containing water absorptive fibers and an inorganic powder (6) exists in at least a surface of the fibrous member.
    Type: Application
    Filed: September 25, 2015
    Publication date: October 5, 2017
    Applicant: Mitsuboshi Belting Ltd.
    Inventors: Manabu Mitsutomi, Hiroyuki Kojima, Kazuyo Kojima, Yusuke Suzumegano
  • Friction drive belt and method for producing same
    Patent number: 9777796
    Abstract: The present invention relates to a friction transmission belt having a friction transmission part, in which the friction transmission part is formed of a rubber composition containing an ethylene-?-olefin elastomer, a mineral-based filler and a surfactant.
    Type: Grant
    Filed: March 7, 2013
    Date of Patent: October 3, 2017
    Assignee: Mitsuboshi Belting Ltd.
    Inventors: Yorifumi Hineno, Takaaki Kan
  • Conductive composition and conductive molded body
    Patent number: 9773582
    Abstract: The present invention relates to a conductive composition containing a conductive metal powder and an epoxy resin component in which the conductive metal powder contains a metal flake and the epoxy resin component contains a polyfunctional epoxy resin having three or more epoxy groups.
    Type: Grant
    Filed: January 11, 2013
    Date of Patent: September 26, 2017
    Assignee: MITSUBOSHI BELTING LTD.
    Inventors: Taisuke Iseda, Masahiro Iwamoto
  • V-ribbed belt
    Patent number: 9752650
    Abstract: A V-ribbed belt contains an extension layer forming a belt back face, a compression layer provided on one side of the extension layer, and a tension member embedded between the extension layer and the compression layer and extending in a belt circumferential length direction. The compression layer has a plurality of V-shaped ribs formed to be extending in the belt circumferential length direction and to be a frictional power transmission surface with a pulley. The frictional power transmission surface is covered with a knitted fabric, in which the knitted fabric is knitted out of a polyester-based composite yarn and a cellulose-based natural spun yarn. The polyester-based composite yarn is a bulky yarn, and a knitting ratio of the cellulose-based natural spun yarn is not less than a knitting ratio of the polyester-based composite yarn.
    Type: Grant
    Filed: March 27, 2014
    Date of Patent: September 5, 2017
    Assignee: Mitsuboshi Belting Ltd.
    Inventors: Kazuyo Kojima, Yusuke Suzumegano, Yoshihito Noborikawa, Manabu Mitsutomi
  • Flat Belt, Belt Mechanism, Belt Lifting Mechanism, Attachment Method, and Method for Manufacturing Flat Belt
    Publication number: 20170248208
    Abstract: The present invention relates to a flat belt (10) that is an open end belt to be fixed to a coupler (31, 41), in which the flat belt (10) contains, formed on both end portions (11, 12) of at least one surface of the flat belt (10), a plurality of projected portions (13) engageable with a plurality of recessed portions (33, 43) formed on the coupler (31, 41).
    Type: Application
    Filed: October 30, 2015
    Publication date: August 31, 2017
    Applicant: Mitsuboshi Belting Ltd.
    Inventor: Eiki TAMURA
  • Belt installation jig and a belt installation method using same
    Patent number: 9739350
    Abstract: The combination of: a) first and second spaced pulleys; b) an endless belt; and c) a belt installation jig having a body with: a pulley pressing part; a belt holding part; and a belt pressing part. The belt installation jig and belt cooperate so that with the belt operatively wrapped against the second pulley and partially operatively wrapped against the first pulley, turning of the first pulley causes the belt to progressively wrap around the first pulley to a fully operatively wrapped state, whereupon further turning of the first pulley situates the belt installation jig for separation from the belt and pulleys.
    Type: Grant
    Filed: March 22, 2010
    Date of Patent: August 22, 2017
    Assignee: Mitsuboshi Belting Ltd.
    Inventors: Yuji Maruyama, Hiroki Takechi, Yasuhito Aoki
  • Belt Attachment Tool
    Publication number: 20170211665
    Abstract: The present invention relates to a belt attachment tool used for further winding a belt, which is wound on a first pulley (1) and a second pulley (2), on a third pulley (3), the belt attachment tool containing a side surface part (10), an attaching part (11), a first belt holding part (14), and a second belt holding part (15), and the second belt holding part (15) is arranged so that a point (F) of intersection between a first extension line (L1) extending the belt wound on the first belt holding part (14) from an outer periphery of the second pulley (2) and a second extension line (L2) extending the belt wound on the second belt holding part (15) from an outer periphery of the first pulley (1) is located to a front side in a rotation direction (A) of the third pulley (3) with respect to a center line (L3) connecting a center (1S) of the first pulley (1) with a center (3S) of the third pulley.
    Type: Application
    Filed: September 29, 2015
    Publication date: July 27, 2017
    Applicant: Mitsuboshi Belting Ltd.
    Inventor: Yasuhito Aoki
  • Frictional power transmission belt and process for producing same
    Patent number: 9695907
    Abstract: The present invention relates to a frictional power transmission belt containing an extensible layer forming a belt back surface, a compressive rubber layer formed on one surface of the extensible layer and frictionally engaging at the lateral surface thereof with pulleys, and a tension member embedded between the extensible layer and the compressive rubber layer along the belt length direction, in which a surface of at least a part of the compressive rubber layer to be in contact with pulleys is coated with a fiber/resin mixture layer that contains a resin component and heat-resistant fibers having a softening point or a melting point higher than a vulcanization temperature in a mixed state, and the heat-resistant fibers contain a fiber embedded so as to extend from the fiber/resin mixture layer to the compressive rubber layer.
    Type: Grant
    Filed: October 31, 2013
    Date of Patent: July 4, 2017
    Assignee: Mitsuboshi Belting Ltd.
    Inventors: Manabu Mitsutomi, Yoshihito Noborikawa, Tsuyoshi Takehara
  • Pulley structure
    Patent number: 9638308
    Abstract: A drive pulley structure has a cylindrical pulley member, a hub structure that is provided inside the pulley member so as to rotate relative to the pulley member, a coil spring that is fixed to the hub structure, a tapering which has a conical round surface as of a cone whose axis is made up of a rotational axis J of the hub structure, and a frictional member that is inserted to be interposed between the conical round surface of the tapering and the pulley member, and the coil spring is inserted to be interposed in place while being compressed in the direction of the rotational axis of the hub structure, the tapering, the frictional member and the pulley member being brought into press contact with each other by virtue of a restoring force P of the coil spring.
    Type: Grant
    Filed: August 30, 2011
    Date of Patent: May 2, 2017
    Assignee: MITSUBOSHI BELTING LTD.
    Inventor: Tomokazu Ishida
  • Toothed Belt
    Publication number: 20170108079
    Abstract: The present invention relates to a toothed belt containing a back side, tooth parts, and a tension member embedded in the back side, the back side and the tooth part contain a urethane resin composition, the tension member is a twisted cord constituted by glass fiber filaments or a twisted cord constituted by polyarylate fiber filaments, in the case where the tension member is the twisted cord constituted by glass fiber filaments, the tooth parts have a pitch of 0.45 to 0.60 mm, the glass fiber filament has a diameter of 6 to 9 micrometers, and the cord has a cord diameter of 0.14 to 0.20 mm, and in the case where the tension member is the twisted cord constituted by polyarylate fiber filaments, the tooth parts have a pitch of 0.45 to 0.71 mm, and the cord has a cord diameter of 0.14 to 0.28 mm.
    Type: Application
    Filed: March 25, 2015
    Publication date: April 20, 2017
    Applicant: Mitsuboshi Belting Ltd.
    Inventors: Tomoaki Shakushiro, Shingo Iizuka