Patents by Inventor Teruyoshi Tanaka
Teruyoshi Tanaka 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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Publication number: 20190119595Abstract: A grease composition is disclosed. The grease composition comprises: 100 parts by mass of (A) an aryl group-containing polyorganosiloxane; 1 to 50 parts by mass of (B) an acrylic block copolymer; and (C) solid particles. Component (B) has a weight average molecular weight of from 10,000 to 1,000,000 and a molecular weight distribution [ratio (Mw/Mn) of weight average molecular weight (Mw) to number average molecular weight (Mn)] of 1.5 or less. Component (B) is present in an amount of from 1 to 40 mass % of the overall grease composition. The grease composition has excellent damping characteristics, hardly any oil separation (even at high temperatures), excellent lubricating performance, and an ability to reduce noise generated by a mechanical device when applied to a noise-generating site of the mechanical device. Sliding members, etc., to which this grease composition has been applied, are also disclosed.Type: ApplicationFiled: March 30, 2017Publication date: April 25, 2019Inventors: Teruyoshi TANAKA, Tetsuji YAMAGUCHI, Taka YOKOYAMA
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Publication number: 20180237723Abstract: A drive device includes a plurality of gears; and a grease composition that is held on a tooth flank of at least one gear of the gears. The at least one gear is made of a resin. The grease composition contains a hydrocarbon base oil, lithium soap serving as a thickener, and olefin resin powder. A weight ratio between the hydrocarbon base oil and the lithium soap in the grease composition is in a range of 94.5:5.5 to 96.0:4.0. A consistency of the grease composition is in a range of 360 to 400.Type: ApplicationFiled: April 20, 2018Publication date: August 23, 2018Applicants: Ricoh Company, Ltd., Dow Corning Toray Co., Ltd.Inventors: Toshiyuki KABATA, Kumiko SEO, Masahiro ISHIDA, Naoki MATSUDA, Teruyoshi TANAKA
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Patent number: 9982213Abstract: A drive device includes a plurality of gears; and a grease composition that is held on a tooth flank of at least one gear of the gears. The at least one gear is made of a resin. The grease composition contains a hydrocarbon base oil, lithium soap serving as a thickener, and olefin resin powder. A weight ratio between the hydrocarbon base oil and the lithium soap in the grease composition is in a range of 94.5:5.5 to 96.0:4.0. A consistency of the grease composition is in a range of 360 to 400.Type: GrantFiled: May 20, 2015Date of Patent: May 29, 2018Assignee: Ricoh Company, LimitedInventors: Toshiyuki Kabata, Kumiko Seo, Masahiro Ishida, Naoki Matsuda, Teruyoshi Tanaka
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Patent number: 9951862Abstract: A drive device includes a gear having a hole; a shaft that passes through the hole; and a grease composition that is held in a clearance between the shaft and an inner peripheral surface of the hole. The gear rotates on a peripheral surface of the shaft. At least one of the gear and the shaft is made of a resin. The clearance is in a range of 10 to 110 ?m. The grease composition contains a hydrocarbon base oil and lithium soap serving as a thickener. A weight ratio of the hydrocarbon base oil to the lithium soap is in a range of 94.5:5.5 to 96.0:4.0. A consistency of the grease composition is in a range of 360 to 400.Type: GrantFiled: May 22, 2015Date of Patent: April 24, 2018Assignee: RICOH COMPANY, LIMITEDInventors: Toshiyuki Kabata, Kumiko Seo, Masahiro Ishida, Naoki Matsuda, Teruyoshi Tanaka
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Patent number: 9879130Abstract: The present invention pertains to: an additive for rubber, comprising (A) a hydrocarbon-based oil and (B) a styrene/diene block copolymer; and a rubber composition obtained by blending the additive for rubber into rubber. The present invention makes it possible to provide an additive for rubber which has little impact on the environment or the human body and enables the provision of rubber having excellent heat resistance and spring properties, as well as a rubber composition obtained by blending the same.Type: GrantFiled: April 30, 2013Date of Patent: January 30, 2018Assignee: DOW CORNING TORAY CO. LTD.Inventors: Teruyoshi Tanaka, Toyohisa Toyama
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Patent number: 9783755Abstract: A drive device includes a slide bearing; a shaft that passes through the slide bearing; a gear that is fixed to the shaft; and a grease composition that is held in a clearance between the slide bearing and the shaft. At least one of the slide bearing and the shaft is made of a resin. The clearance is in a range of 10 to 110 ?m. The grease composition contains a hydrocarbon base oil and lithium soap serving as a thickener. A weight ratio of the hydrocarbon base oil to the lithium soap is in a range of 94.5:5.5 to 96.0:4.0. A consistency of the grease composition is in a range of 360 to 400.Type: GrantFiled: May 19, 2015Date of Patent: October 10, 2017Assignees: Ricoh Company, Ltd., Dow Corning Toray Co., Ltd.Inventors: Toshiyuki Kabata, Kumiko Seo, Masahiro Ishida, Naoki Matsuda, Teruyoshi Tanaka
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Patent number: 9581943Abstract: Provided is a heat fixing apparatus, which suppresses the depletion of a lubricant applied to an inside of the heat fixing apparatus and which has long life and high reliability, the heat fixing apparatus including a heating rotary member and a pressurizing rotary member, and containing, as a lubricant in a sliding portion, (A) perfluoropolyether oil having a kinetic viscosity at 40° C. of from 100 to 200 mm2/s and an evaporation loss being 1.2 mass % or less in a case where 10 g of a sample of the perfluoropolyether oil is placed in a petri dish having an inner diameter of 41 mm and allowed to stand still at 250° C. for 200 hours and (B) polytetrafluoroethylene.Type: GrantFiled: April 22, 2015Date of Patent: February 28, 2017Assignees: CANON KABUSHIKI KAISHA, DOW CORNING TORAY CO., LTD.Inventors: Hirohiko Aiba, Satoru Taniguchi, Masaki Hirose, Teruyoshi Tanaka
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Publication number: 20150344804Abstract: A drive device includes a slide bearing; a shaft that passes through the slide bearing; a gear that is fixed to the shaft; and a grease composition that is held in a clearance between the slide bearing and the shaft. At least one of the slide bearing and the shaft is made of a resin. The clearance is in a range of 10 to 110 ?m. The grease composition contains a hydrocarbon base oil and lithium soap serving as a thickener. A weight ratio of the hydrocarbon base oil to the lithium soap is in a range of 94.5:5.5 to 96.0:4.0. A consistency of the grease composition is in a range of 360 to 400.Type: ApplicationFiled: May 19, 2015Publication date: December 3, 2015Applicants: DOW CORNING TORAY CO., LTD., RICOH COMPANY, LIMITEDInventors: Toshiyuki KABATA, Kumiko SEO, Masahiro ISHIDA, Naoki MATSUDA, Teruyoshi TANAKA
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Publication number: 20150344809Abstract: A drive device includes a plurality of gears; and a grease composition that is held on a tooth flank of at least one gear of the gears. The at least one gear is made of a resin. The grease composition contains a hydrocarbon base oil, lithium soap serving as a thickener, and olefin resin powder. A weight ratio between the hydrocarbon base oil and the lithium soap in the grease composition is in a range of 94.5:5.5 to 96.0:4.0. A consistency of the grease composition is in a range of 360 to 400.Type: ApplicationFiled: May 20, 2015Publication date: December 3, 2015Applicants: RICOH COMPANY, LIMITED, DOW CORNING TORAY CO., LTD.Inventors: Toshiyuki KABATA, Kumiko SEO, Masahiro ISHIDA, Naoki MATSUDA, Teruyoshi TANAKA
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Publication number: 20150345614Abstract: A drive device includes a gear having a hole; a shaft that passes through the hole; and a grease composition that is held in a clearance between the shaft and an inner peripheral surface of the hole. The gear rotates on a peripheral surface of the shaft. At least one of the gear and the shaft is made of a resin. The clearance is in a range of 10 to 110 ?m . The grease composition contains a hydrocarbon base oil and lithium soap serving as a thickener. A weight ratio of the hydrocarbon base oil to the lithium soap is in a range of 94.5:5.5 to 96.0:4.0. A consistency of the grease composition is in a range of 360 to 400.Type: ApplicationFiled: May 22, 2015Publication date: December 3, 2015Applicants: DOW CORNING TORAY CO., LTD., RICOH COMPANY, LIMITEDInventors: Toshiyuki KABATA, Kumiko SEO, Masahiro ISHIDA, Naoki MATSUDA, Teruyoshi TANAKA
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Publication number: 20150316881Abstract: Provided is a heat fixing apparatus, which suppresses the depletion of a lubricant applied to an inside of the heat fixing apparatus and which has long life and high reliability, the heat fixing apparatus including a heating rotary member and a pressurizing rotary member, and containing, as a lubricant in a sliding portion, (A) perfluoropolyether oil having a kinetic viscosity at 40° C. of from 100 to 200 mm2/s and an evaporation loss being 1.2 mass % or less in a case where 10 g of a sample of the perfluoropolyether oil is placed in a petri dish having an inner diameter of 41 mm and allowed to stand still at 250° C. for 200 hours and (B) polytetrafluoroethylene.Type: ApplicationFiled: April 22, 2015Publication date: November 5, 2015Inventors: Hirohiko Aiba, Satoru Taniguchi, Masaki Hirose, Teruyoshi Tanaka
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Publication number: 20150183969Abstract: The present invention pertains to: an additive for rubber, comprising (A) a hydrocarbon-based oil and (B) a styrene/diene block copolymer; and a rubber composition obtained by blending the additive for rubber into rubber. The present invention makes it possible to provide an additive for rubber which has little impact on the environment or the human body and enables the provision of rubber having excellent heat resistance and spring properties, as well as a rubber composition obtained by blending the same.Type: ApplicationFiled: April 30, 2013Publication date: July 2, 2015Inventors: Teruyoshi Tanaka, Toyohisa Toyama