Patents by Inventor Toshiyuki Masuda
Toshiyuki Masuda 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: 20240151273Abstract: As a stopper for restricting movement of a rotary shaft 31 of a transmission device 3 and a shaft part 41 of a first drive-side joint member J11 in a direction of approaching each other, a stopper part 5 is formed separately from the shaft part 41 and a yoke body part 42 of the first drive-side joint member so that the stopper function of the first drive-side joint member J11 is guaranteed by the separately-formed stopper part 5 in the present invention. With this configuration, a change in the gravity center position of the first drive-side joint member caused due to build-up processing on the shaft part or the yoke body part is suppressed. It is possible to restrict relative movement of the first drive-side joint member and the rotary shaft while ensuring adequate machining for formation of a shaft-part-side seal surface on the first drive-side joint member.Type: ApplicationFiled: December 16, 2021Publication date: May 9, 2024Applicant: Hitachi Astemo, Ltd.Inventors: Shoichi ICHIKAWA, Daiki TSUTSUMI, Toshiyuki MASUDA, Kenichiro ISHIKURA
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Patent number: 11976704Abstract: A propeller shaft (1) that is a power transmission shaft has a shaft member (2) as a tubular body made of iron-based metal and a balance weight (3) made of iron-based metal and welded to an outer peripheral surface of this shaft member (2). At least a part of the balance weight (3) of the propeller shaft (1) is covered with a sacrificial metal coating (4) made of sacrificial corrosion prevention material that contains metal whose ionization tendency is higher than that of metal forming the shaft member (2). With this, it is possible to suppress local progression of corrosion at a periphery of the balance weight (3) and improve durability of the propeller shaft (1).Type: GrantFiled: October 31, 2022Date of Patent: May 7, 2024Assignee: HITACHI ASTEMO, LTD.Inventors: Yasutomo Mabe, Kiyokazu Nakane, Hiromichi Komai, Xiaojin Zhu, Toshiyuki Masuda, Kenichiro Ishikura
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Publication number: 20240133468Abstract: A water-impermeable cover includes an opening part extending toward an opening part of a holding ring of a stub shaft of a propeller shaft, and is disposed to face the opening part of the holding ring. The water-impermeable cover is fixed at a position to face the opening part of the holding ring of the stub shaft, and the opening part of the water-impermeable cover extends to approach the opening part of the holding ring: therefore, even if muddy water etc. scatters obliquely toward the opening part of the holding ring, the risk of muddy water etc. entering the opening part of the holding ring is reduced, and as a result, also the risk of muddy water etc. entering an interior of a center bearing is reduced.Type: ApplicationFiled: December 16, 2021Publication date: April 25, 2024Applicant: Hitachi Astemo, Ltd.Inventors: Shoichi ICHIKAWA, Daiki TSUTSUMI, Toshiyuki MASUDA, Kenichiro ISHIKURA
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Patent number: 11885374Abstract: A propeller shaft (PS) has a balance piece (9) on the outer peripheral side of a stub shaft body section (31) of a stub shaft (3), which is axially separated from both spline sections (25, 34), which are spline fitting sections. Due to this configuration, changes in the gap in both spline sections (25, 34) when the balance piece (9) is welded are minimized, and the occurrence of new rotational imbalance can be minimized. As a result, rotational imbalance in the propeller shaft (PS) due to the balance piece (9) can be corrected appropriately and easily.Type: GrantFiled: December 23, 2020Date of Patent: January 30, 2024Assignee: HITACHI ASTEMO, LTD.Inventors: Kenichiro Ishikura, Xiaojin Zhu, Toshiyuki Masuda
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Publication number: 20230332638Abstract: A propeller shaft (PS) has a balance piece (9) on the outer peripheral side of a stub shaft body section (31) of a stub shaft (3), which is axially separated from both spline sections (25, 34), which are spline fitting sections. Due to this configuration, changes in the gap in both spline sections (25, 34) when the balance piece (9) is welded are minimized, and the occurrence of new rotational imbalance can be minimized. As a result, rotational imbalance in the propeller shaft (PS) due to the balance piece (9) can be corrected appropriately and easily.Type: ApplicationFiled: December 23, 2020Publication date: October 19, 2023Applicant: HITACHI ASTEMO, LTD.Inventors: Kenichiro ISHIKURA, Xiaojin ZHU, Toshiyuki MASUDA
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Publication number: 20230047822Abstract: A propeller shaft (1) that is a power transmission shaft has a shaft member (2) as a tubular body made of iron-based metal and a balance weight (3) made of iron-based metal and welded to an outer peripheral surface of this shaft member (2). At least a part of the balance weight (3) of the propeller shaft (1) is covered with a sacrificial metal coating (4) made of sacrificial corrosion prevention material that contains metal whose ionization tendency is higher than that of metal forming the shaft member (2). With this, it is possible to suppress local progression of corrosion at a periphery of the balance weight (3) and improve durability of the propeller shaft (1) .Type: ApplicationFiled: October 31, 2022Publication date: February 16, 2023Applicant: HITACHI ASTEMO, LTD.Inventors: Yasutomo MABE, Kiyokazu NAKANE, Hiromichi KOMAI, Xiaojin ZHU, Toshiyuki MASUDA, Kenichiro ISHIKURA
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Patent number: 11512761Abstract: A propeller shaft (1) that is a power transmission shaft has a shaft member (2) as a tubular body made of iron-based metal and a balance weight (3) made of iron-based metal and welded to an outer peripheral surface of this shaft member (2). At least a part of the balance weight (3) of the propeller shaft (1) is covered with a sacrificial metal coating (4) made of sacrificial corrosion prevention material that contains metal whose ionization tendency is higher than that of metal forming the shaft member (2). With this, it is possible to suppress local progression of corrosion at a periphery of the balance weight (3) and improve durability of the propeller shaft (1).Type: GrantFiled: May 18, 2018Date of Patent: November 29, 2022Assignee: HITACHI ASTEMO, LTD.Inventors: Yasutomo Mabe, Kiyokazu Nakane, Hiromichi Komai, Xiaojin Zhu, Toshiyuki Masuda, Kenichiro Ishikura
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Patent number: 11493093Abstract: A propeller shaft as a power transmission shaft is provided between vehicle-side first second shaft parts, and a first tube as a first shaft member is connected to the first shaft part through a first joint member and to the second shaft part through a second joint member. The first tube is connected to the first joint member through a first collar member and to the second joint member through a second collar member. The first collar member includes a first main body part exposed from a first end portion of the first tube, and a first insertion part inserted into the inside of the first end portion. In at least the first collar member, the maximum value of the outer diameter of the first main body part is set to be no greater than the maximum value of the outer diameter of the first insertion part.Type: GrantFiled: August 28, 2018Date of Patent: November 8, 2022Assignee: HITACHI ASTEMO, LTD.Inventors: Yasutomo Mabe, Toshiyuki Masuda, Hiromichi Komai, Kenichiro Ishikura
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Publication number: 20220349447Abstract: A propeller shaft includes: a cylindrical boot member including a protruding portion, and a boot band tightening portion; a shaft member which is inserted into the boot member, and which includes a first diameter portion having an outside diameter greater than an inside diameter of the protruding portion, a groove portion which has an outside diameter smaller than the outside diameter of the first outside diameter portion, and in which the protruding portion is received, and a second outside diameter portion having an outside diameter greater than the outside diameter of the first outside diameter portion; and a boot band tightened on the boot band tightening portion.Type: ApplicationFiled: July 30, 2020Publication date: November 3, 2022Applicant: HITACHI ASTEMO, LTD.Inventors: Shinichi SATO, Toshiyuki MASUDA, Kenichiro ISHIKURA
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Publication number: 20200370603Abstract: A propeller shaft as a power transmission shaft is provided between vehicle-side first second shaft parts, and a first tube as a first shaft member is connected to the first shaft part through a first joint member and to the second shaft part through a second joint member. The first tube is connected to the first joint member through a first collar member and to the second joint member through a second collar member. The first collar member includes a first main body part exposed from a first end portion of the first tube, and a first insertion part inserted into the inside of the first end portion. In at least the first collar member, the maximum value of the outer diameter of the first main body part is set to be no greater than the maximum value of the outer diameter of the first insertion part.Type: ApplicationFiled: August 28, 2018Publication date: November 26, 2020Applicant: Hitachi Automotive Systems, Ltd.Inventors: Yasutomo MABE, Toshiyuki MASUDA, Hiromichi KOMAI, Kenichiro ISHIKURA
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Publication number: 20200116229Abstract: A propeller shaft (1) that is a power transmission shaft has a shaft member (2) as a tubular body made of iron-based metal and a balance weight (3) made of iron-based metal and welded to an outer peripheral surface of this shaft member (2). At least a part of the balance weight (3) of the propeller shaft (1) is covered with a sacrificial metal coating (4) made of sacrificial corrosion prevention material that contains metal whose ionization tendency is higher than that of metal forming the shaft member (2). With this, it is possible to suppress local progression of corrosion at a periphery of the balance weight (3) and improve durability of the propeller shaft (1).Type: ApplicationFiled: May 18, 2018Publication date: April 16, 2020Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Yasutomo MABE, Kiyokazu NAKANE, Hiromichi KOMAI, Xiaojin ZHU, Toshiyuki MASUDA, Kenichiro ISHIKURA
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Patent number: 10352368Abstract: The first constant-velocity joint has an inner ring member, an outer ring member housing the inner ring member, and balls, which are installed in raceway grooves formed at prescribed intervals in a circumferential direction in the outer ring member and which extend along an axial direction, for transmitting rotational torque between the inner ring member and the outer ring member. Furthermore, the constant-velocity joint is formed so that one of the inner ring member and the outer ring member connects to an attaching member installed to a vehicle side with a spline, and so that the other of them connects to a power transmission shaft. In outside wall of the outer ring member, an engagement groove is formed so as to engage with an engagement member applied to connection or release thereof in a range avoiding positions corresponding to the raceway grooves in an axial direction or a circumferential direction.Type: GrantFiled: February 6, 2015Date of Patent: July 16, 2019Assignee: Hitachi Automotive Systems, Ltd.Inventors: Kenichi Sugiyama, Yasutomo Mabe, Toshiyuki Masuda, Hiromichi Komai
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Publication number: 20190133896Abstract: An emulsified composition includes an amino-modified silicone oil, an aqueous solvent, and a surfactin. The surfactin is represented by the following formula: where X is an amino acid residue selected from the group consisting of a leucine residue, an isoleucine residue, and a valine residue and R1 is a C9-18 alkyl group.Type: ApplicationFiled: December 27, 2018Publication date: May 9, 2019Applicant: KANEKA CORPORATIONInventors: Tadao Tsuji, Toshiyuki Masuda, Kisaburo Noguchi
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Publication number: 20180231062Abstract: A power transmission device includes: a coupling member including an insertion hole, and having an axial elastic force; a connection member which includes a connection hole, and which is connected to the coupling member by a bolt inserted through the connection hole and the insertion hole; a sleeve member which is disposed within the connection hole and the insertion hole, and within which the bolt is inserted; and a ring member disposed within the connection hole, including an outer circumference surface abutted on an inner circumference surface of the connection hole, and including a through hole through which the sleeve member is inserted to penetrate.Type: ApplicationFiled: July 1, 2016Publication date: August 16, 2018Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.Inventors: Daiki TSUTSUMI, Toshiyuki MASUDA, Hiromichi KOMAI
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Publication number: 20170016484Abstract: The first constant-velocity joint has an inner ring member, an outer ring member housing the inner ring member, and balls, which are installed in raceway grooves formed at prescribed intervals in a circumferential direction in the outer ring member and which extend along an axial direction, for transmitting rotational torque between the inner ring member and the outer ring member. Furthermore, the constant-velocity joint is formed so that one of the inner ring member and the outer ring member connects to an attaching member installed to a vehicle side with a spline, and so that the other of them connects to a power transmission shaft. In outside wall of the outer ring member, an engagement groove is formed so as to engage with an engagement member applied to connection or release thereof in a range avoiding positions corresponding to the raceway grooves in an axial direction or a circumferential direction.Type: ApplicationFiled: February 6, 2015Publication date: January 19, 2017Inventors: Kenichi SUGIYAMA, Yasutomo MABE, Toshiyuki MASUDA, Hiromichi KOMAI
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Patent number: 8545981Abstract: The artificial hair of the present invention comprising a flame-retardant polyester-based fiber that is formed of a composition obtained by melt-kneading, the composition comprising: 100 parts by weight of polyester (A); 5 parts by weight to 30 parts by weight of a bromine-containing flame retardancy agent (B); and 0.5 parts by weight to 10 parts by weight of an antimony compound (C) having an average particle diameter ranging from 1.5 ?m to 15 ?m, wherein the polyester (A) is made of at least one polymer selected from the group consisting of polyalkylene terephthalate and copolyester, where the copolyester contains polyalkylene terephthalate as a main component, and 0.01% omf to 1% omf of a polyorganosiloxane-based fiber treating agent (E) is deposited on the flame-retardant polyester-based fiber. The artificial fiber has excellent combing smoothness, and the excellent flame retardancy.Type: GrantFiled: May 29, 2012Date of Patent: October 1, 2013Assignee: Kaneka CorporationInventors: Toshiyuki Masuda, Hiroyuki Shinbayashi
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Publication number: 20130133676Abstract: The artificial hair of the present invention comprising a flame-retardant polyester-based fiber that is formed of a composition obtained by melt-kneading, the composition comprising: 100 parts by weight of polyester (A); 5 parts by weight to 30 parts by weight of a bromine-containing flame retardancy agent (B); and 0.5 parts by weight to 10 parts by weight of an antimony compound (C) having an average particle diameter ranging from 1.5 ?m to 15 ?m, wherein the polyester (A) is made of at least one polymer selected from the group consisting of polyalkylene terephthalate and copolyester, where the copolyester contains polyalkylene terephthalate as a main component, and 0.01% omf to 1% omf of a polyorganosiloxane-based fiber treating agent (E) is deposited on the flame-retardant polyester-based fiber. The artificial fiber has excellent combing smoothness, and the excellent flame retardancy.Type: ApplicationFiled: May 29, 2012Publication date: May 30, 2013Applicant: KANEKA CORPORATIONInventors: Toshiyuki MASUDA, Hiroyuki SHINBAYASHI
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Patent number: 8211542Abstract: Artificial hair is made of flame-retardant polyester-based fiber formed of a composition obtained by melt-kneading 5 parts by weight to 30 parts by weight of a bromine-containing flame retardancy agent (B), 0.5 parts by weight to 10 parts by weight of an antimony compound (C) having an average particle diameter ranging from 1.5 ?m to 15 ?m, and 0.05 parts by weight to 10 parts by weight of at least one kind of a compound (D) selected from the group consisting of: biscarbodiimide compounds; polycarbodiimide compounds; bisoxazoline compounds; and isocyanate compounds, with respect to 100 parts by weight of polyester (A) made of at least one kind of polyalkylene terephthalate and copolyester that contains polyalkylene terephthalate as a main component. Also provided is a fiber for artificial hairs obtained by adhering to that fiber either a polyorganosiloxane-based fiber treating agent or a fiber treating agent containing a flame-retardant organosilicon compound.Type: GrantFiled: September 6, 2005Date of Patent: July 3, 2012Assignee: Kaneka CorporationInventors: Toshiyuki Masuda, Hiroyuki Shinbayashi
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Publication number: 20110269878Abstract: Artificial hair is made of flame-retardant polyester-based fiber formed of a composition obtained by melt-kneading 5 parts by weight to 30 parts by weight of a bromine-containing flame retardancy agent (B), 0.5 parts by weight to 10 parts by weight of an antimony compound (C) having an average particle diameter ranging from 1.5 ?m to 15 ?m, and 0.05 parts by weight to 10 parts by weight of at least one kind of a compound (D) selected from the group consisting of: biscarbodiimide compounds; polycarbodiimide compounds; bisoxazoline compounds; and isocyanate compounds, with respect to 100 parts by weight of polyester (A) made of at least one kind of polyalkylene terephthalate and copolyester that contains polyalkylene terephthalate as a main component. Also provided is a fiber for artificial hairs obtained by adhering to that fiber either a polyorganosiloxane-based fiber treating agent or a fiber treating agent containing a flame-retardant organosilicon compound.Type: ApplicationFiled: September 6, 2005Publication date: November 3, 2011Applicant: Kaneka CorporationInventors: Toshiyuki Masuda, Hiroyuki Shinbayashi
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Patent number: 7812497Abstract: A total number of windings in an armature is an even number. The windings are divided into a first winding group and a second winding group. The windings of the first winding group are arranged one after another at generally equal angular intervals without overlapping with each other. The windings of the second winding group are arranged one after another at generally equal angular intervals without overlapping with each other and are wound separately from the windings of the first winding group.Type: GrantFiled: August 26, 2008Date of Patent: October 12, 2010Assignee: Asmo Co., Ltd.Inventors: Kazushi Sugishima, Toshiyuki Masuda