Patents by Inventor Takuya Tomoda
Takuya Tomoda has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11933383Abstract: The present invention relates to a twisted cord for constituting a core wire of a power-transmission belt, the twisted cord including a plurality of primary twisted yarns that are bundled and secondarily-twisted, in which when secondary twist is untwisted by 25 cm, a difference in length between the longest primary twisted yarn L and the shortest primary twisted yarn S among the plurality of primary twisted yarns is 1 to 10 mm.Type: GrantFiled: May 15, 2020Date of Patent: March 19, 2024Assignee: Mitsuboshi Belting Ltd.Inventors: Yosuke Sueto, Takuya Tomoda, Mayu Esaka
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Patent number: 11879520Abstract: The present invention pertains to a friction transmission belt that includes a core cable. The core cable includes a cord comprising: a core yarn containing high elastic-modulus fibers; and a plurality of sheath yarns that are disposed around the core yarn and that contain low elastic-modulus fibers. The cord is twisted and the proportion of the average diameter of the sheath yarn to the average diameter of the core yarn is 0.2 to 0.4.Type: GrantFiled: November 12, 2018Date of Patent: January 23, 2024Assignee: Mitsuboshi Belting Ltd.Inventors: Masashi Tamura, Takeshi Tsuji, Takuya Tomoda
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Patent number: 11859078Abstract: An aqueous treatment agent for preparing a cord by treating an untreated yarn for a power transmission belt includes at least a first aqueous treatment agent. The first aqueous treatment agent contains an epoxy resin (A), a polycarbonate polyol (B), and a blocked polyisocyanate (C). The epoxy resin (A) may contain a bisphenol type epoxy resin (A1). The polycarbonate polyol (B) may contain a polycarbonate diol (B1). The blocked polyisocyanate (C) may contain at least one blocked polyisocyanate selected from the group consisting of an aliphatic polyisocyanate or derivatives thereof and an aromatic polyisocyanate and having a dissociation temperature of 120° C. to 180° C.Type: GrantFiled: March 6, 2020Date of Patent: January 2, 2024Assignee: Mitsuboshi Belting Ltd.Inventor: Takuya Tomoda
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Patent number: 11815158Abstract: The present invention relates to a core wire for a frictional power-transmission belt, the core wire including a Lang lay cord, having a total fineness of 300 to 1000 tex, and including a rubber component adhered to at least a part of a surface of the core wire, in which the Lang lay cord comprises a first-twisted yarn, and in which the first-twisted yarn comprises a carbon fiber.Type: GrantFiled: August 19, 2019Date of Patent: November 14, 2023Assignee: Mitsuboshi Belting Ltd.Inventors: Takuya Tomoda, Takeshi Nishiyama, Masashi Tamura, Tomomitsu Kurokawa
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Patent number: 11674561Abstract: A frictional power transmission belt is provided, containing an adhesion rubber layer in contact with at least a portion of a tension member extending in a longitudinal direction of the belt, in which the adhesion rubber layer is formed of a first vulcanized rubber composition containing a rubber component and a filler, the filler contains substantially no silica and contains 30 parts by mass or more of carbon black based on 100 parts by mass of the rubber component, and the tension member has, on a surface thereof, an overcoat layer formed of a second vulcanized rubber composition containing a rubber component and silica.Type: GrantFiled: April 14, 2017Date of Patent: June 13, 2023Assignee: Mitsuboshi Belting Ltd.Inventors: Hisato Ishiguro, Takuya Tomoda
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Publication number: 20230037131Abstract: A core wire for a power-transmission belt includes a plied twisted cord formed by putting together and secondary twisting a plurality of primary twisted yarns. The primary twisted yarns include a plurality of hard primary twisted yarns (A) and one soft primary twisted yarn (B). The hard primary twisted yarns (A) include an aramid fiber, and a fineness of each hard primary twisted yarn (A) is 1500 dtex or less. The soft primary twisted yarn (B) includes a low elastic modulus fiber. A ratio (B/A) of a primary twist coefficient of the soft primary twisted yarn (B) to an average value of primary twist coefficients of the hard primary twisted yarns (A) is 0.5 to 1.2.Type: ApplicationFiled: January 13, 2021Publication date: February 2, 2023Applicant: Mitsuboshi Belting Ltd.Inventors: Takuya Tomoda, Yasushi Hirakawa
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Publication number: 20220243785Abstract: The present invention relates to a twisted cord for constituting a core wire of a power-transmission belt, the twisted cord including a plurality of primary twisted yarns that are bundled and secondarily-twisted, in which when secondary twist is untwisted by 25 cm, a difference in length between the longest primary twisted yarn L and the shortest primary twisted yarn S among the plurality of primary twisted yarns is 1 to 10 mm.Type: ApplicationFiled: May 15, 2020Publication date: August 4, 2022Applicant: Mitsuboshi Belting Ltd.Inventors: Yosuke Sueto, Takuya Tomoda, Mayu Esaka
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Publication number: 20220153986Abstract: An aqueous treatment agent for preparing a cord by treating an untreated yarn for a power transmission belt includes at least a first aqueous treatment agent. The first aqueous treatment agent contains an epoxy resin (A), a polycarbonate polyol (B), and a blocked polyisocyanate (C). The epoxy resin (A) may contain a bisphenol type epoxy resin (A1). The polycarbonate polyol (B) may contain a polycarbonate diol (B1). The blocked polyisocyanate (C) may contain at least one blocked polyisocyanate selected from the group consisting of an aliphatic polyisocyanate or derivatives thereof and an aromatic polyisocyanate and having a dissociation temperature of 120° C. to 180° C.Type: ApplicationFiled: March 6, 2020Publication date: May 19, 2022Applicant: Mitsuboshi Belting Ltd.Inventor: Takuya Tomoda
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Patent number: 11131058Abstract: The present invention relates to a method for manufacturing a cord for a power transmission belt, including a first treatment step of treating an untreated yarn of a cord for a power transmission belt with a first treatment agent containing: a rubber composition (A) containing a condensate (A1) of a resorcin and formaldehyde, a rubber component (A2) containing a carboxy-modified latex, and a curing agent (A3) containing a polycarbodiimide resin having a plurality of carbodiimide groups; and a hydrophilic solvent (B).Type: GrantFiled: October 27, 2016Date of Patent: September 28, 2021Assignee: Mitsuboshi Belting Ltd.Inventor: Takuya Tomoda
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Publication number: 20210222755Abstract: The present invention relates to a core wire for a frictional power-transmission belt, the core wire including a Lang lay cord, having a total fineness of 300 to 1000 tex, and including a rubber component adhered to at least a part of a surface of the core wire, in which the Lang lay cord comprises a first-twisted yarn, and in which the first-twisted yarn comprises a carbon fiber.Type: ApplicationFiled: August 19, 2019Publication date: July 22, 2021Applicant: Mitsuboshi Belting Ltd.Inventors: Takuya Tomoda, Takeshi Nishiyama, Masashi Tamura, Tomomitsu Kurokawa
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Patent number: 10941506Abstract: A plied cord includes three or four first twist yarns containing para-aramid fibers, wherein: the para-aramid fibers have an average size of 1000-1250 dtex, a tensile elasticity of 55-70 GPa and a tensile strength of 2800-3500 MPa; and for the plied cord, the number of first twists when the number of the first twist yarns is three is 33-40 twists/10 cm and the number of first twists when the number of the first twist yarns is four is 42-52 twists/10 cm, the second twist direction is the opposite direction from the first twist, and the ratio of the second twist coefficient to the first twist coefficient is 0.25-1.Type: GrantFiled: October 17, 2017Date of Patent: March 9, 2021Assignee: Mitsuboshi Belting Ltd.Inventor: Takuya Tomoda
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Publication number: 20200378469Abstract: The present invention pertains to a friction transmission belt that includes a core cable. The core cable includes a cord comprising: a core yarn containing high elastic-modulus fibers; and a plurality of sheath yarns that are disposed around the core yarn and that contain low elastic-modulus fibers. The cord is twisted and the proportion of the average diameter of the sheath yarn to the average diameter of the core yarn is 0.2 to 0.4.Type: ApplicationFiled: November 12, 2018Publication date: December 3, 2020Applicant: Mitsuboshi Belting Ltd.Inventors: Masashi Tamura, Takeshi Tsuji, Takuya Tomoda
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Publication number: 20190276954Abstract: The present invention relates to a plied cord comprising three or four first twist yarns containing para-aramid fibers, wherein: the para-aramid fibers have an average size of 1000-1250 dtex, a tensile elasticity of 55-70 GPa and a tensile strength of 2800-3500 MPa; and for the plied cord, the number of first twists when the number of the first twist yarns is three is 33-40 twists/10 cm and the number of first twists when the number of the first twist yarns is four is 42-52 twists/10 cm, the second twist direction is the opposite direction from the first twist, and the ratio of the second twist coefficient to the first twist coefficient is 0.25-1.Type: ApplicationFiled: October 17, 2017Publication date: September 12, 2019Applicant: Mitsuboshi Belting Ltd.Inventor: Takuya Tomoda
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Patent number: 10280304Abstract: A polyarylene sulfide resin composition which is excellent in mechanical strength as well as electromagnetic shielding effect, slidability and moist heat resistance. The resin composition comprises (A) 100 parts by weight of a polyarylene sulfide resin (component A) synthesized through a polymerization reaction using an aromatic disulfide-based compound as a polymerization terminator and (B) 10 to 180 parts by weight of carbon fibers (component B), wholly aromatic polyamide fibers (component C) or glass fibers (component D).Type: GrantFiled: January 28, 2015Date of Patent: May 7, 2019Assignee: TEIJIN LIMITEDInventor: Takuya Tomoda
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Publication number: 20190128373Abstract: A frictional power transmission belt is provided, containing an adhesion rubber layer in contact with at least a portion of a tension member extending in a longitudinal direction of the belt, in which the adhesion rubber layer is formed of a first vulcanized rubber composition containing a rubber component and a filler, the filler contains subsantially no silica and contains 30 parts by mass or more of carbon black based on 100 parts by mass of the rubber component, and the tension member has, on a surface thereof, an overcoat layer formed of a second vulcanized rubber composition containing a rubber component and silica.Type: ApplicationFiled: April 14, 2017Publication date: May 2, 2019Applicant: Mitsuboshi Belting Ltd.Inventors: Hisato Ishiguro, Takuya Tomoda
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Publication number: 20190128372Abstract: Provided is a frictional power transmission belt containing an adhesion rubber layer in contact with at least a portion of a tension member extending in a longitudinal direction of the belt, in which the adhesion rubber layer is formed of a first vulcanized rubber composition containing a rubber component and a filler. The filler contains substantially no silica and contains 30 parts by mass or more of carbon black based on 100 parts by mass of the rubber component, and the tension member has, on a surface thereof, an overcoat layer formed of a second vulcanized rubber composition containing a rubber component and silica.Type: ApplicationFiled: April 14, 2017Publication date: May 2, 2019Applicant: Mitsuboshi Belting Ltd.Inventors: Hisato Ishiguro, Takuya Tomoda
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Patent number: 10233327Abstract: A polyarylene sulfide resin composition which is excellent in mechanical strength as well as electromagnetic shielding effect, slidability and moist heat resistance. The resin composition comprises (A) 100 parts by weight of a polyarylene sulfide resin (component A) synthesized through a polymerization reaction using an aromatic disulfide-based compound as a polymerization terminator and (B) 10 to 180 parts by weight of carbon fibers (component B), wholly aromatic polyamide fibers (component C) or glass fibers (component D).Type: GrantFiled: March 28, 2018Date of Patent: March 19, 2019Assignee: TEIJIN LIMITEDInventor: Takuya Tomoda
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Publication number: 20180313028Abstract: The present invention relates to a method for manufacturing a cord for a power transmission belt, including a first treatment step of treating an untreated yarn of a cord for a power transmission belt with a first treatment agent containing: a rubber composition (A) containing a condensate (A1) of a resorcin and formaldehyde, a rubber component (A2) containing a carboxy-modified latex, and a curing agent (A3) containing a polycarbodiimide resin having a plurality of carbodiimide groups; and a hydrophilic solvent (B).Type: ApplicationFiled: October 27, 2016Publication date: November 1, 2018Applicant: Mitsuboshi Belting Ltd.Inventor: Takuya Tomoda
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Publication number: 20180265701Abstract: A resin composition which comprises a polyarylene sulfide resin having a reduced chlorine content and a reduced sodium content and a filler and is excellent in weld strength and moist heat resistance while it retains the excellent characteristic properties of the polyarylene sulfide resin. The resin composition comprises 100 parts by weight of the polyarylene sulfide resin (component A) and 10 to 300 parts by weight of the filler (component B) and has a total chlorine content of not more than 500 ppm and a total sodium content of not more than 39 ppm.Type: ApplicationFiled: January 22, 2016Publication date: September 20, 2018Applicant: TEIJIN LIMITEDInventors: Takuya TOMODA, Satoshi NOMURA, Hidenori NAKAGAWA
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Publication number: 20180215918Abstract: A polyarylene sulfide resin composition which is excellent in mechanical strength as well as electromagnetic shielding effect, slidability and moist heat resistance. The resin composition comprises (A) 100 parts by weight of a polyarylene sulfide resin (component A) synthesized through a polymerization reaction using an aromatic disulfide-based compound as a polymerization terminator and (B) 10 to 180 parts by weight of carbon fibers (component B), wholly aromatic polyamide fibers (component C) or glass fibers (component B).Type: ApplicationFiled: March 28, 2018Publication date: August 2, 2018Applicant: TEIJIN LIMITEDInventor: Takuya TOMODA