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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：US11719138B2
公开(公告)日：2023-08-08
申请号：US17922613
申请日：2021-04-27
Applicant: TPR Co., Ltd.
Inventor： Fumiya Ito , Shohtaroh Hara
CPC classification number: F01L3/08 , B22F3/16 , B22F3/26 , B22F5/106 , B22F7/002 , B22F2003/247 , B22F2201/02 , B22F2201/20 , B22F2301/10 , B22F2301/35 , B22F2302/40 , B22F2998/10 , F01L2301/00
Abstract: The present invention addresses the problem of providing a sintered alloy valve guide capable of inhibiting valve adhesion even in a high-temperature environment. The problem can be solved by a sintered alloy valve guide impregnated with a lubricating oil including pores that are sealed on the valve guide outer circumferential surface. More particularly, the problem is solved by the sealing step of performing a sealing treatment of pores on the outer circumferential surface of a sintered body impregnated with a lubricating oil.
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公开(公告)号：US11686226B2
公开(公告)日：2023-06-27
申请号：US17922613
申请日：2021-04-27
Applicant: TPR Co., Ltd.
Inventor： Fumiya Ito , Shohtaroh Hara
CPC classification number: F01L3/08 , B22F3/16 , B22F3/26 , B22F5/106 , B22F7/002 , B22F2003/247 , B22F2201/02 , B22F2201/20 , B22F2301/10 , B22F2301/35 , B22F2302/40 , B22F2998/10 , F01L2301/00
Abstract: The present invention addresses the problem of providing a sintered alloy valve guide capable of inhibiting valve adhesion even in a high-temperature environment. The problem can be solved by a sintered alloy valve guide impregnated with a lubricating oil including pores that are sealed on the valve guide outer circumferential surface. More particularly, the problem is solved by the sealing step of performing a sealing treatment of pores on the outer circumferential surface of a sintered body impregnated with a lubricating oil.
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公开(公告)号：US20230127085A1
公开(公告)日：2023-04-27
申请号：US17922613
申请日：2021-04-27
Applicant: TPR Co., Ltd.
Inventor： Fumiya Ito , Shohtaroh Hara
Abstract: The present invention addresses the problem of providing a sintered alloy valve guide capable of inhibiting valve adhesion even in a high-temperature environment. The problem can be solved by a sintered alloy valve guide impregnated with a lubricating oil including pores that are sealed on the valve guide outer circumferential surface. More particularly, the problem is solved by the sealing step of performing a sealing treatment of pores on the outer circumferential surface of a sintered body impregnated with a lubricating oil.
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公开(公告)号：US09556761B2
公开(公告)日：2017-01-31
申请号：US14916251
申请日：2013-09-05
Applicant: TPR CO., LTD.
Inventor： Yoshio Koyama , Shohtaroh Hara
IPC: C22C33/02 , F01L3/02 , B22F1/00 , C22C30/00 , C22C38/02 , C22C38/52 , C22C38/58 , C23C8/10 , B22F5/00
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.
Abstract translation: 阀座包括通过对包含4质量％至15质量％的Co颗粒的铁基烧结合金进行氧化处理的铁基烧结合金; 和含有至少一种金属间化合物，碳化物，硅化物，氮化物或硼化物的化合物的硬质颗粒，其具有选自元素周期表中的4a〜6a族元素中的一种或多种元素，并且具有硬度 的600HV至1600V的氧化处理，并且其具有主要包含在铁基烧结合金的表面和内部形成的四氧化三铁（Fe 3 O 4）和氧化钴（CoO）的氧化物。 经过氧化处理的铁基烧结合金在安装在气缸盖上之前的状态下，其截面的氧化物面积比为5％〜25％。
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