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公开(公告)号：US09784369B2
公开(公告)日：2017-10-10
申请号：US15034657
申请日：2015-03-30
Applicant: TPR CO., LTD.
Inventor： Hironori Fujita , Kentaro Kawano
CPC classification number: F16J9/203 , C23C14/0611 , C23C14/0641 , C23C14/325 , F02F5/00 , F16J9/06 , F16J9/064 , F16J9/066 , F16J9/067 , F16J9/068 , F16J9/20 , F16J9/206 , F16J9/26
Abstract: In a combination oil ring, when a line passing through a center of a segment width is a first intermediate line, a length of a line segment between a position on an engine combustion chamber side and a position on a side distant from the engine combustion chamber on a contour curve at a position at a distance of 3 μm from an outer peripheral vertex toward an inner peripheral side in a segment radial direction is L, and an intermediate line of the line segment L is a second intermediate line, the second intermediate line is located on the side more distant from the engine combustion chamber than the first intermediate line, and the outer periphery vertex of the segment is located on the second intermediate line or on the side more distant from the engine combustion chamber than the second intermediate line.
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公开(公告)号：US20170175893A1
公开(公告)日：2017-06-22
申请号：US15034657
申请日：2015-03-30
Applicant: TPR CO., LTD.
Inventor： Hironori FUJITA , Kentaro KAWANO
CPC classification number: F16J9/203 , C23C14/0611 , C23C14/0641 , C23C14/325 , F02F5/00 , F16J9/06 , F16J9/064 , F16J9/066 , F16J9/067 , F16J9/068 , F16J9/20 , F16J9/206 , F16J9/26
Abstract: In a combination oil ring, when a line passing through a center of a segment width is a first intermediate line, a length of a line segment between a position on an engine combustion chamber side and a position on a side distant from the engine combustion chamber on a contour curve at a position at a distance of 3 μm from an outer peripheral vertex toward an inner peripheral side in a segment radial direction is L, and an intermediate line of the line segment L is a second intermediate line, the second intermediate line is located on the side more distant from the engine combustion chamber than the first intermediate line, and the outer periphery vertex of the segment is located on the second intermediate line or on the side more distant from the engine combustion chamber than the second intermediate line.
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公开(公告)号：US09175771B2
公开(公告)日：2015-11-03
申请号：US14610006
申请日：2015-01-30
Applicant: TPR CO., LTD.
Inventor： Takatsugu Iwashita , Tomoyuki Sato
CPC classification number: F16J9/26 , C23C14/0605 , C23C14/16 , C23C28/044 , C23C28/44
Abstract: A piston ring which is provided with a carbon-based coating which has a low friction property and wear resistance, that is, a piston ring which has a carbon-based coating formed over its sliding surface, in which piston ring, the coating is a multilayer coating comprised of two types of layers having different hardnesses laminated in at least two layers, a hardness difference between the two types of layers is 500 to 1700 HV, a high hardness layer has the same or greater thickness than a low hardness layer, and the coating as a whole has a thickness of 5.0 μm or more. The high hardness layer has a thickness of 5 to 90 nm. The surface on which the coating is formed has a base material roughness of 1.0 μmRz or less.
Abstract translation: 一种具有低摩擦性和耐磨性的碳基涂层的活塞环，即在其滑动面上形成有碳基涂层的活塞环，其中活塞环，涂层为 由具有不同硬度的两种类型的层压至少两层的多层涂层，两种类型的层之间的硬度差为500至1700HV，高硬度层具有与低硬度层相同或更大的厚度，以及 涂层整体的厚度为5.0μm以上。 高硬度层的厚度为5〜90nm。 形成涂层的表面的基材粗糙度为1.0μmRz以下。
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公开(公告)号：US20250113476A1
公开(公告)日：2025-04-03
申请号：US18857919
申请日：2022-05-23
Applicant: TPR CO., LTD.
Inventor： Katsuhito SUZUKI , Toshiaki SHIMIZU
IPC: H05K9/00
Abstract: Provided are: an electromagnetic wave absorber including fibrous carbon; and an electromagnetic wave shielding composite including: the electromagnetic wave absorber; and an electromagnetic wave reflection layer formed on one surface side of the electromagnetic wave absorber. The electromagnetic wave absorber has a complex permittivity with a real part of from 6 to 30 and an imaginary part of from 1 to 25 at a frequency of 24 GHz. When the electromagnetic wave absorber is cut, the number of fiber bundles of the fibrous carbon observed on a cut surface of the electromagnetic wave absorber, the fiber bundles each having a maximum diameter of 100 nm or more, is 10 or less per 10 μm×10 μm.
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公开(公告)号：US20250001489A1
公开(公告)日：2025-01-02
申请号：US18886498
申请日：2024-09-16
Applicant: TPR CO., LTD. , TPR INDUSTRY CO., LTD.
Inventor： Hideki AIZAWA , Shin MORIYAMA , Mizuki YAMASHITA
Abstract: A mold used for centrifugal casting includes a mold body formed in a cylindrical shape and a lid member (40) that is detachably assembled to an end part of the mold body in an axial direction. The lid member includes a lid body (41) that is attached to an opening part formed at the end part of the mold body, a protrusion part (450) that is fitted to the mold body, and a spring that applies elastic force to the lid body in a direction in which the lid body closely contacts the mold body.
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Patent Agency Ranking
公开(公告)号：US12121958B2
公开(公告)日：2024-10-22
申请号：US18258748
申请日：2020-12-21
Applicant: TPR CO., LTD. , TPR INDUSTRY CO., LTD.
Inventor： Hideki Aizawa , Shin Moriyama , Mizuki Yamashita
CPC classification number: B22D13/101 , B22D13/12
Abstract: A mold used for centrifugal casting includes a mold body formed in a cylindrical shape and a lid member (40) that is detachably assembled to an end part of the mold body in an axial direction. The lid member includes a lid body (41) that is attached to an opening part formed at the end part of the mold body, a protrusion part (450) that is fitted to the mold body, and a spring that applies elastic force to the lid body in a direction in which the lid body closely contacts the mold body.
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公开(公告)号：US12117084B2
公开(公告)日：2024-10-15
申请号：US18026151
申请日：2021-07-30
Applicant: TPR Co., Ltd.
Inventor： Hiroyuki Nagakura , Shuichi Inamori , Akira Hikone
Abstract: A combination of piston rings assembled to a piston includes a first compression ring, a second compression ring, a third compression ring and an oil ring. When an axial width of the first compression ring is h1(1), an axial width of the second compression ring is h1(2), an axial width of the third compression ring is h1(3) and an axial width of the oil ring is h1(4), h1(1)≥h1(2) and h1(1)≥h1(3), and when h1(TOTAL)=h1(1)+h1(2)+h1(3)+h1(4), h1(TOTAL)≥3.9 mm.
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公开(公告)号：US12066111B1
公开(公告)日：2024-08-20
申请号：US18566852
申请日：2022-11-16
Applicant: TPR Co., Ltd.
Inventor： Satoshi Minemura , Kenichiro Kosaka , Yushi Abe
Abstract: An outer peripheral surface of a piston ring has a cut surface provided to form a cutout portion between an outer peripheral end portion and a lower surface, the cut surface includes a curved concave surface, an inclination angle of a tangent of the curved concave surface at a point closest to the combustion chamber side on the curved concave surface, with respect to a first virtual line extending in parallel to the lower surface is equal to or greater than 5° and equal to or less than 50°, and in a case where an axial direction width of the piston ring is set as h1, and an axial direction width of the cut surface is set as H, H/h1 is equal to or greater than 0.2 and equal to or less than 0.4.
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公开(公告)号：US20240008367A1
公开(公告)日：2024-01-04
申请号：US18215717
申请日：2023-06-28
Applicant: TPR Co., Ltd.
Inventor： Toshiaki Shimizu , Shinpei Teshima , Hiromu Kobori , Yasuhiko Okamura , Kazuki Otomo , Naoaki Hidaka
IPC: H10N10/855 , H10N10/17 , H10N10/81
CPC classification number: H10N10/855 , H10N10/17 , H10N10/81
Abstract: A thermoelectric conversion module includes a base material having heat insulation properties and carbon nanotube yarn that is helically wound around the base material, P-type parts and N-type parts are alternately arranged and are series-connected in an extension direction of the carbon nanotube yarn, one side part of a helix formed by the carbon nanotube yarn is formed as a heat reception part, and the other side part across the base material from the one side part is formed as a heat dissipation part, lengths of the P-type parts and lengths of the N-type parts are shorter than a length of a one-turn portion of the helix, and the P-type parts and the N-type parts are arranged such that respective one end parts are included in the heat reception part and respective other end parts are included in the heat dissipation part.
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公开(公告)号：US20230373012A1
公开(公告)日：2023-11-23
申请号：US18265958
申请日：2020-12-07
Applicant: TPR CO., LTD. , TPR INDUSTRY CO., LTD.
Inventor： Koji KAMATA , Hideki AIZAWA , Koji OKUYAMA
IPC: B23B31/16 , B23B31/107
CPC classification number: B23B31/1627 , B23B31/1075
Abstract: A device according to the present disclosure is a workpiece retaining device 10 that retains a retained portion 110 of an axial-directional end portion of a workpiece 100 that is cylindrical. The workpiece retaining device 10 includes a core member 32 that is round and that comes into contact an inner perimeter face of the retained portion 110 of the workpiece 100, a pressing member 33 that presses an outer perimeter face of the retained portion 110 of the workpiece 100 to an inner side in a radial direction, and an aligning member 44 that, upon a pressing force from the pressing member 33 acting thereupon, allows the core member 32 to move in the radial direction, in accordance with a magnitude and a direction of the pressing force.
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