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公开(公告)号：US20200165945A1
公开(公告)日：2020-05-28
申请号：US16627682
申请日：2018-10-23
Applicant: TPR CO., LTD.
Inventor： Yoshio BANDO , Fumiya ITO , Kenichi HARASHINA
Abstract: Provided are a valve guide made of an iron-based sintered alloy excellent in wear resistance and thermal conductivity, and a method of producing the same. Specifically, provided are a method of producing a valve guide made of an iron-based sintered alloy, the method including the steps of: molding raw material powder including diffusion-alloyed powder including core iron powder and Cu bonded to the core iron powder through diffusion to obtain a molded body; and sintering the molded body, to thereby produce a valve guide made of an iron-based sintered alloy, and a valve guide produced by the production method.
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公开(公告)号：US10571024B2
公开(公告)日：2020-02-25
申请号：US16061123
申请日：2017-07-24
Applicant: TPR CO., LTD.
Inventor： Kentaro Kawano , Seiji Tamaki
Abstract: Provided is an oil ring. A shape of an outer peripheral surface of an upper segment arranged on an engine combustion chamber side has a symmetrical curved shape. A shape of an outer peripheral surface of a lower segment arranged on a side away from the engine combustion chamber is a symmetrical curved shape.
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公开(公告)号：US20190144978A1
公开(公告)日：2019-05-16
申请号：US16193315
申请日：2018-11-16
Applicant: TOYOTA MOTOR EAST JAPAN, INC. , TOYOTA JIDOSHA KABUSHIKI KAISHA , TPR CO., LTD. , TPR INDUSTRY CO., LTD. , HappyProduct Inc.
Inventor： Ryo KOIKE , Atsushi Suzuki , Kazuyoshi Manabe , Kiyoyuki Kawai , Masami Horigome , Takashi Oizumi , Tetsuo Hasegawa , Katsunori Kanauchi , Mihoko Sawada , Kazue Kurihara , Koshi Adachi
Abstract: Provided is a cast iron material from which excellent friction characteristics can be obtained. Provided is the cast iron material containing C and Fe as a composition, and further containing Cr as the composition in 1.0 to 3.5% in terms of mass %. The cast iron material is used in a sliding component sliding under an environment of lubricating oil to which an additive containing Mo as a constituent element, such as MoDTC, is added. Cr contained in the cast iron material promotes a decomposition reaction of the additive containing Mo added to the lubricating oil to form a film of molybdenum disulfide, the film having low friction. Thus, the fiction can be reduced.
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公开(公告)号：US20190085981A1
公开(公告)日：2019-03-21
申请号：US15742451
申请日：2017-03-13
Applicant: TPR CO., LTD.
Inventor： Hitoshi YAMAGUCHI , Teppei OGA
IPC: F16J15/3272 , F16J15/3284 , F16J15/24
Abstract: To fulfill a sealing function for a fluid within a short period of time when a pump configured to pressure-feed the fluid is activated, provided are a seal ring, including: a first side surface (20); a second side surface (30) being a side surface on a side opposite to the first side surface (20); and a first side-surface side projecting portion (40) formed on the first side surface (20), in which a distal end portion (42) of the first side-surface side projecting portion (40) projects most toward an outward side from the first side surface (20) as compared to an entire surface of the first side surface (20) except for the distal end portion (42), and a sealing device using the same.
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公开(公告)号：US20190043675A1
公开(公告)日：2019-02-07
申请号：US16074878
申请日：2017-02-03
Applicant: TPR CO., LTD. , NATIONAL INSTITUTE FOR MATERIALS SCIENCE
Inventor： Naoya KOBAYASHI , Yusuke YAMAUCHI , Rahu SALUNKHE , Jing TANG
CPC classification number: H01G11/24 , H01B1/04 , H01B1/12 , H01G11/36 , H01G11/38 , H01G11/42 , H01G11/48 , H01G11/86 , H01M4/36 , H01M4/38 , H01M4/60 , Y02E60/13
Abstract: This core-shell composite (10) is provided with a core (11) formed from a porous carbon body having a large number of pores from the interior through to the surface, and a shell layer (12) formed from conductive polymer nanorods (12a) that extend outward from the cavities of the pores (11a) on the surface of the core. The present invention provides the core-shell composite (10), to which electrolyte ions can be efficiently adsorbed or doped, a method for producing the core-shell composite, as well as an electrode material, a catalyst, an electrode, a secondary battery and an electric double-layer capacitor that use the core-shell composite.
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Patent Agency Ranking
公开(公告)号：US10036287B2
公开(公告)日：2018-07-31
申请号：US15219594
申请日：2016-07-26
Applicant: TPR CO., LTD.
Inventor： Yoshio Koyama , Shohtaroh Hara
IPC: B22F3/24 , F01L3/02 , B22F1/00 , C22C30/00 , C22C38/02 , C22C38/52 , C22C38/58 , C23C8/10 , B22F5/00 , C22C33/02 , C22C1/10 , C21D6/00 , C21D9/00 , C22C32/00 , C22C38/10 , C23C8/14
CPC classification number: F01L3/02 , B22F1/0059 , B22F5/008 , B22F2301/15 , B22F2301/35 , B22F2302/10 , B22F2302/25 , C21D6/007 , C21D9/0068 , C22C1/1078 , C22C30/00 , C22C32/001 , C22C33/02 , C22C33/0207 , C22C33/0257 , C22C33/0285 , C22C38/02 , C22C38/10 , C22C38/52 , C22C38/58 , C23C8/10 , C23C8/14 , F01L2101/00 , F01L2101/02 , F01L2103/00 , F01L2820/01 , F16K25/005
Abstract: The valve seat includes an iron-based sintered alloy subjected to oxidation treatment, which is obtained by subjecting an iron-based sintered alloy including: 4 mass % to 15 mass % of Co particles; and hard particles each containing at least one compound of an intermetallic compound, a carbide, a silicide, a nitride, or a boride that has one or more kinds of elements selected from group 4a to 6a elements in a periodic table, and having a hardness of from 600 HV to 1,600 HV to oxidation treatment, and which has an oxide mainly including triiron tetraoxide (Fe3O4) and cobalt oxide (CoO) formed on a surface and in an interior of the iron-based sintered alloy. The iron-based sintered alloy subjected to oxidation treatment has an area ratio of the oxide of from 5% to 25% in a cross section thereof in a state prior to installation on the cylinder head.
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公开(公告)号：US20160333456A1
公开(公告)日：2016-11-17
申请号：US15219594
申请日：2016-07-26
Applicant: TPR CO., LTD.
Inventor： Yoshio KOYAMA , Shohtaroh HARA
CPC classification number: F01L3/02 , B22F1/0059 , B22F5/008 , B22F2301/15 , B22F2301/35 , B22F2302/10 , B22F2302/25 , C21D6/007 , C21D9/0068 , C22C1/1078 , C22C30/00 , C22C32/001 , C22C33/02 , C22C33/0207 , C22C33/0257 , C22C33/0285 , C22C38/02 , C22C38/10 , C22C38/52 , C22C38/58 , C23C8/10 , C23C8/14 , F01L2101/00 , F01L2101/02 , F01L2103/00 , F01L2820/01 , F16K25/005
Abstract: The valve seat includes an iron-based sintered alloy subjected to oxidation treatment, which is obtained by subjecting an iron-based sintered alloy including: 4 mass % to 15 mass % of Co particles; and hard particles each containing at least one compound of an intermetallic compound, a carbide, a silicide, a nitride, or a boride that has one or more kinds of elements selected from group 4a to 6a elements in a periodic table, and having a hardness of from 600 HV to 1,600 HV to oxidation treatment, and which has an oxide mainly including triiron tetraoxide (Fe3O4) and cobalt oxide (CoO) formed on a surface and in an interior of the iron-based sintered alloy. The iron-based sintered alloy subjected to oxidation treatment has an area ratio of the oxide of from 5% to 25% in a cross section thereof in a state prior to installation on the cylinder head.
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公开(公告)号：US12173799B2
公开(公告)日：2024-12-24
申请号：US18548166
申请日：2022-03-08
Applicant: TPR CO., LTD.
Inventor： Akira Hikone , Takashi Oguro , Noriaki Ayuzawa , Toshihiro Yamaoka , Naoki Umeda
Abstract: An oil control ring comprises: an oil ring having a pair of land parts arranged in a sliding direction and connected to each other by a web part; and a coil expander that biases the oil ring toward the outer circumferential side in the radial direction. The web part of the oil ring is provided with a plurality of window holes. In the axial cross-sectional view of the largest opening portion of the window hole in the axial direction of the oil ring, a width H1 in the sliding direction of the oil ring and a length L1 of a combustion chamber-side non-window hole part, which excludes the window hole, in the outer circumferential surface of the web part, satisfy the condition of 0.15>L1/H1≥0.
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公开(公告)号：US20240300009A1
公开(公告)日：2024-09-12
申请号：US18548324
申请日：2021-03-08
Applicant: TPR CO., LTD. , TPR INDUSTRY CO., LTD.
Inventor： Atsushi IGARASHI , Shin MORIYAMA , Mizuki YAMASHITA
Abstract: A drip prevention device for a pressurized pouring furnace according to the present disclosure is a device 10 that prevents dripping of molten metal from a molten metal outlet of the pressurized pouring furnace The drip prevention device 10 includes: a stopper 20 that brings a lower end thereof into contact with the outlet so as to block the outlet, and is provided so as to be able to rotate about a central axis 20C of the stopper with no rotation angle limitation and move vertically above the outlet; a rotation motor 30 that rotates the stopper 20; a drip detection device 60 that detects dripping of molten metal from the outlet in a case where the dripping occurs; and a control device 70 that, in a case where a drip detection signal is received from the drip detection device 60, drives the rotation motor 30 to cause the stopper 20 to perform a predetermined rotation operation.
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公开(公告)号：US20240263700A1
公开(公告)日：2024-08-08
申请号：US18697119
申请日：2022-06-20
Applicant: TPR Co., Ltd.
Inventor： Akira Hikone , Kiyoyuki Kawai
IPC: F16J9/20
CPC classification number: F16J9/20
Abstract: A combination of piston rings assembled to a piston of an internal combustion engine includes four compression rings. An outer peripheral surface of a first compression ring includes a barrel surface, an outer peripheral surface of a second compression ring includes an outer peripheral end portion and a taper surface, an outer peripheral surface of a third compression ring includes an outer peripheral end portion and a taper surface, and an outer peripheral surface of a fourth compression ring includes an outer peripheral end portion and a taper surface.
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