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公开(公告)号：US11141783B1
公开(公告)日：2021-10-12
申请号：US17246799
申请日：2021-05-03
Applicant: TPR Co., Ltd. , TPR Industry Co., Ltd.
Inventor： Yasutomo Tokairin , Koichi Hatakeyama , Kiyoyuki Kawai
Abstract: An object of the present invention is to provide a cylinder liner for insert casting that can improve the joining strength between a cylinder liner and a cylinder block by reducing voids generated between the cylinder liner and the cylinder block.
The above-described problem can be solved when the molten metal running index YI defined by the following Formula (1) is from 2.2 to 14.5. Molten metal running index YI=[area ratio St (%) of top portions of protrusions×molten metal infiltration volume V (mm3)/surface area A (mm2) of cylinder liner base]/average surface-to-surface distance Pav between top portions of protrusions (mm) (1).-
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：US20150093586A1
公开(公告)日：2015-04-02
申请号：US14385183
申请日：2012-03-16
Applicant: TPR CO., LTD.
Inventor： Kiyoyuki Kawai , Shoji Tanaka
CPC classification number: C22C27/06 , C23C14/0641 , C23C14/32 , F16J9/26 , Y10T428/31678
Abstract: Provided is a high-toughness coating film having excellent wear resistance, in particular, resistance to cracking and peeling. A high-toughness coating film (2) includes a composition containing a mixture of metallic chromium, in which nitrogen is dissolved, and Cr2N. A content of the nitrogen in the high-toughness coating film is 2.0 to 8.5 mass %, and IP, which is expressed by total of each diffraction peak intensity of Cr2N/(total of each diffraction peak intensity of metallic chromium+total of each diffraction peak intensity of Cr2N), is 3 to 40% when 20 is in a range of 30° to 90°, where θ is an incident angle in X-ray diffraction of the high-toughness coating film.
Abstract translation: 提供具有优异的耐磨性，特别是耐开裂和剥离的高韧性涂膜。 高韧性涂膜（2）包括含有溶解有氮的金属铬与Cr 2 N的混合物的组合物。 高韧性涂膜中的氮含量为2.0〜8.5质量％，IP由Cr 2 N的衍射峰强度的总和（各衍射峰强度的金属铬的总和+各衍射的总和）表示 当20在30°至90°的范围内时，Cr 2 N的峰强度）为3〜40％，其中＆ 是高韧性涂膜的X射线衍射中的入射角。
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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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Patent Agency Ranking
公开(公告)号：US11867295B2
公开(公告)日：2024-01-09
申请号：US18027777
申请日：2021-09-30
Applicant: TPR Co., Ltd.
Inventor： Tomoyuki Sato , Yutaka Kitazume , Kiyoyuki Kawai , Haojie Fu
IPC: F16J9/26
CPC classification number: F16J9/26
Abstract: An object of the present invention is to provide a sliding member coated with a DLC coating in which microfractures on the sliding surface thereof due to the progression of cracks are less likely to occur, and in which an increase in abrasive wear can be reduced. The present invention achieves the above-mentioned object by a sliding member having, on the outer peripheral sliding surface thereof, a DLC coating in which the amount of plastic deformation work as measured by a nanoindentation test is within a specific range.
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公开(公告)号：US20220307443A1
公开(公告)日：2022-09-29
申请号：US17439433
申请日：2020-06-18
Applicant: TPR Industry Co., Ltd. , TPR Co., Ltd.
Inventor： Akira Sato , Takashi Sato , Kiyoyuki Kawai
IPC: F02F1/00
Abstract: Provided is a spiny liner that may further improve bonding strength when being integrated with metal on the outer peripheral surface side. The spiny liner includes a plurality of projections including constricted projections on the surface. Denoting the number of constricted projections per 100 mm2 out of the projection by Pc, the average height of projections by h (mm), and the average of maximum thicknesses and the average of minimum thicknesses of any 20 projections out of the constricted projections by dw (mm) and dn (mm), respectively, the total value of (I) and (II) below is 1.55 or more. (I)=Pc×[(0.35 hπ/12)×(2dw2−dw×dn−dn2)] (I)=Pc×{(dn2/4)×r×0.35h}
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公开(公告)号：US20250109722A1
公开(公告)日：2025-04-03
申请号：US18851051
申请日：2023-02-07
Applicant: TPR Co., Ltd.
Inventor： Hiroyuki Nagakura , Shuichi Inamori , Kiyoyuki Kawai
Abstract: A piston unit adapted to reciprocate in a cylinder includes a piston and a top land member attached to the piston. The piston includes a first portion including a piston end at one end surface side and fitted with the top land member. The first portion has a smaller outer diameter than a second portion such that there is a step therebetween. The second portion is the other portion of the piston than the first portion. The top land member has a groove wall forming surface opposed to a step surface that connects the outer circumferential surface of the first portion and the outer circumferential surface of the second portion. The first ring groove is defined by the groove wall forming surface, the step surface, and the outer circumferential surface of the first portion.
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公开(公告)号：US12092222B2
公开(公告)日：2024-09-17
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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公开(公告)号：US20230392688A1
公开(公告)日：2023-12-07
申请号：US18027777
申请日：2021-09-30
Applicant: TPR Co., Ltd.
Inventor： Tomoyuki Sato , Yutaka Kitazume , Kiyoyuki Kawai , Haojie Fu
IPC: F16J9/26
CPC classification number: F16J9/26
Abstract: An object of the present invention is to provide a sliding member coated with a DLC coating in which microfractures on the sliding surface thereof due to the progression of cracks are less likely to occur, and in which an increase in abrasive wear can be reduced. The present invention achieves the above-mentioned object by a sliding member having, on the outer peripheral sliding surface thereof, a DLC coating in which the amount of plastic deformation work as measured by a nanoindentation test is within a specific range.
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