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1. 发明授权

US11821524B2 Combination of cylinder and piston ring 有权
公开(公告)号：US11821524B2
公开(公告)日：2023-11-21
申请号：US17757092
申请日：2020-11-19
申请人： KABUSHIKI KAISHA RIKEN
发明人： Akio Shinohara
IPC分类号： C23C14/06 , F16J9/26 , F16J9/28
CPC分类号： F16J9/26 , F16J9/28
摘要： The present disclosure is a combination of a cylinder and a piston ring, the combination including a cylinder of an internal combustion engine and a piston ring sliding on an inner peripheral surface of the cylinder. The piston ring has an outer peripheral surface sliding on the inner peripheral surface of the cylinder, and the outer peripheral surface is formed of a substantially hydrogen-free amorphous carbon coating. The Vickers hardness Hd of the amorphous carbon coating and the Vickers hardness Hb of the inner peripheral surface of the cylinder satisfy Hd+Hb≤2500 HV. The ratio ID/IG of the peak intensity of the D band to the peak intensity of the G band in a Raman spectrum obtained by measuring the amorphous carbon coating by Raman spectroscopy is 0.60 or more and 1.33 or less.

2. 发明授权

US11795941B2 Using silicone o-rings in dual action irrigation pump 有权
公开(公告)号：US11795941B2
公开(公告)日：2023-10-24
申请号：US16585264
申请日：2019-09-27
申请人： Biosense Webster (Israel) Ltd.
发明人： Yehuda Algawi , Assaf Govari , Ilya Sitnitsky
IPC分类号： F04B53/14 , F16J9/28
CPC分类号： F04B53/143 , F16J9/28
摘要： A disposable dual-action reciprocating pump part includes a piston and a cylinder, and multiple silicone O-rings. The piston is configured to move bi-directionally inside the cylinder. The multiple silicone O-rings are configured to seal the piston against the cylinder.

3. 发明授权

US11441682B2 Piston ring, reciprocating compressor, method for selecting piston ring and method for evaluating life of piston ring 有权
公开(公告)号：US11441682B2
公开(公告)日：2022-09-13
申请号：US16837538
申请日：2020-04-01
申请人： KOBE STEEL, LTD.
发明人： Tomohiro Ootsuka , Naofumi Kanei
IPC分类号： F16J9/28 , F04B15/00 , F16J9/26 , F04B7/06
摘要： A piston ring is used for a reciprocating compressor. In the piston ring, polytetrafluoroethylene and polyetheretherketone or polyimide account for 50% or more by mass in total. The piston ring does not contain polyphenylene sulfide. The piston ring has a tensile strength within a range of more than 15 MPa and less than 100 MPa.

4. 发明授权

US11053884B2 Internal combustion engine 有权
公开(公告)号：US11053884B2
公开(公告)日：2021-07-06
申请号：US17031226
申请日：2020-09-24
申请人： Coutts Industries Inc.
发明人： Clyde Coutts
IPC分类号： F02F3/20 , F02F1/42 , F02M35/10 , F02M35/104 , F02B75/02 , F02B75/32 , F02B33/06 , F02B33/30 , F16H21/36 , F16J9/28
摘要： An internal combustion engine includes a hollow cylinder, a piston within the hollow cylinder, and a cylinder head. A base valve assembly at a base of the hollow cylinder permits or restricts fluid flow from an intake manifold into a sub-chamber below the piston. The piston includes at least one intake port connecting a combustion chamber above the piston with the sub-chamber, and a transfer valve that opens and closes the at least one intake port. When the transfer valve opens the at least one intake port, fluid is permitted to flow from the sub-chamber to the combustion chamber. The internal combustion engine operates according to a four-stroke piston cycle, wherein multiple intake stages are provided. The intake stages may include intake of air into the sub-chamber during a compression stroke, transfer of air from the sub-chamber to the combustion chamber during a power stroke, intake of air-fuel mixture into the sub-chamber during an exhaust stroke, and transfer of air-fuel mixture from the sub-chamber to the combustion chamber during an intake stroke.

5. 发明申请

US20200088298A1 ROD PACKING 审中-公开
公开(公告)号：US20200088298A1
公开(公告)日：2020-03-19
申请号：US16357875
申请日：2019-03-19
申请人： MITSUI E&S MACHINERY CO., LTD.
发明人： Masaki TANAKA
IPC分类号： F16J9/28
摘要： The invention provides a rod packing that is capable of minimizing the leakage of a fluid, by fully maintaining its contact state with a shaft at a shaft seal part even when the rod packing abrades and even when it expands/contracts due to a temperature change. In one surface of a ring member, a plurality of incision grooves incised in a radial direction from an inner peripheral edge up to an appropriate position and those incised from an outer peripheral edge to an appropriate position are alternately formed, and in the other surface, incision grooves continuing from the inner peripheral edge up to the outer peripheral edge are formed. In order to adapt to the expansion and the contraction due to a temperature change and a change in shape and dimension due to abrasion, the inner incision grooves and the outer incision grooves increase/decrease in width, causing the packing to expand/contract in the circumferential direction, so that the rod packing is capable of maintaining its

6. 发明申请

US20190049007A1 SEALING RING HAVING A POROUS LAYER 审中-公开
公开(公告)号：US20190049007A1
公开(公告)日：2019-02-14
申请号：US16059976
申请日：2018-08-09
申请人： EtaGen, Inc.
发明人： Jodie Prudhomme
IPC分类号： F16J9/12 , F16J9/28 , F16J15/16
摘要： A sealing ring segment of a sealing ring assembly may include three layers. The middle layer is permeable to gas, thus allowing radial pressure-balancing on the sealing ring segment to reduce wear. The gas-permeable allows gas to permeate from a high-pressure region to a clearance gap between a radially outer surface of the segment and a bore of a cylinder. The flow of gas affects the pressure at the radially outer surface, thus reducing the resultant radial outward force on the segment, as compared to no gas permeation. The gas-permeable layer may be porous, sintered, or have any other suitable structure having suitable gas permeability properties. The gas-permeable layer may be positioned central or rearward axially, in relation to the outer layers. The gas-permeable layer may extend the full radial thickness of the sealing ring segment.

7. 发明授权

US09995393B2 Piston ring and method for manufacturing same 有权
公开(公告)号：US09995393B2
公开(公告)日：2018-06-12
申请号：US14909296
申请日：2014-07-31
申请人： Mahle Metal Leve S/A , Mahle International GmbH
发明人： Antonio E. Meirelles Tomanik , Daniel Lopez
IPC分类号： F16J9/26 , F16J9/14 , F16J9/12 , F16J9/28 , C23C30/00
CPC分类号： F16J9/26 , C23C30/005 , F16J9/12 , F16J9/14 , F16J9/28
摘要： A piston ring for a piston of an internal combustion engine or a compressor may include a substantially annular shaped body defining an inner surface facing towards a groove configured to receive the body, an upper surface facing towards a combustion chamber and extending substantially at a right angle to the inner surface, and a lower surface disposed substantially opposite the upper surface. A layer of thermally insulating coating may be disposed at least partially on at least one of the inner surface, the upper surface and the lower surface.

8. 发明授权

US09920836B2 Piston ring for internal combustion engine 有权
公开(公告)号：US09920836B2
公开(公告)日：2018-03-20
申请号：US15030123
申请日：2014-10-16
申请人： KABUSHIKI KAISHA RIKEN
发明人： Hayato Sasaki , Takashi Ono , Yongtie Yan
IPC分类号： F16J9/26 , F16J9/22 , F16J9/28
CPC分类号： F16J9/22 , F16J9/26 , F16J9/28
摘要： Provided is a piston ring for an internal combustion engine capable of preventing aluminum cohesion for a long time under conditions with high temperature and a high load and also suppressing the wearing of a piston member. A piston ring 1 for the internal combustion engine including a piston ring body 11 having at least one of an upper side face and a lower side face coated with an aluminum cohesion resistance film 12, wherein the aluminum cohesion resistance film 12 has a first coating film 12a made of first ceramics material formed on the piston ring body and a second coating film having Vickers hardness HV smaller than that of the first ceramics material formed on the first coating film 12a.

9. 发明授权

US09869390B2 Wear-protection layer for piston rings 有权
公开(公告)号：US09869390B2
公开(公告)日：2018-01-16
申请号：US14428140
申请日：2013-09-09
申请人： FEDERAL-MOGUL BURSCHEID GMBH
发明人： Marcus Kennedy , Michael Zinnabold
IPC分类号： B22F7/04 , F16J9/26 , C23C4/06 , C22C27/06 , C22C30/00 , F16J9/28 , C23C4/067 , C23C4/129
CPC分类号： F16J9/26 , C22C27/06 , C22C30/00 , C23C4/06 , C23C4/067 , C23C4/129 , F16J9/28
摘要： The invention relates to a novel wear-protection layer for piston rings of internal combustion engines and a method for applying a wear-protection layer of this type during production of a piston ring. The protective layer is characterized inter alia by reduced wear and high resistance to scuffing.

10. 发明申请

US20160235919A1 PREFILLED SYRINGE, GASKET FOR USE IN PREFILLED SYRINGE, AND GASKET PRODUCTION METHOD 有权
标题翻译：预充式注射器，用于预充式注射器的垫圈和垫圈生产方法
公开(公告)号：US20160235919A1
公开(公告)日：2016-08-18
申请号：US15000898
申请日：2016-01-19
申请人： SUMITOMO RUBBER INDUSTRIES, LTD.
发明人： Hiroaki NAKANO
IPC分类号： A61M5/315 , F16J9/28 , B29C63/00 , F16J9/20
CPC分类号： A61M5/31513 , A61M5/315 , A61M5/31511 , A61M2207/00 , B29C63/0004 , B29C63/0073 , B29L2031/265 , F16J9/20 , F16J9/28
摘要： When a laminated gasket product is demolded from a mold in production thereof by a conventional production process, the gasket product is rubbed against the mold and, therefore, minute scratches are formed on a surface of the gasket product. The minute scratches may impair the reliable sealability of a liquid drug. A method for producing a gasket (13) for use in a prefilled syringe (10) includes the steps of: preparing a gasket forming mold; molding a gasket (13) in the mold, the gasket having a surface laminated with a lamination film (15) and including a circumferential surface portion (17); demolding the gasket (13) from the mold, and then simultaneously forming a groove (22) and a projection (24) each extending circumferentially of the gasket in a portion of the lamination film (15) present in the circumferential surface portion (17) of the gasket.
摘要翻译：当通过常规的生产方法将层压垫片产品从其生产中的模具脱模时，垫圈产品被摩擦在模具上，因此在垫圈产品的表面上形成微小的划痕。微小的划痕可能会损害液体药物的可靠密封性。一种用于制造用于预充式注射器（10）的垫圈（13）的方法，包括以下步骤：制备垫圈成型模具; 在所述模具中模制垫圈（13），所述垫圈具有层压有层压膜（15）并且包括圆周表面部分（17）的表面; 然后，在存在于周面部（17）的层叠膜（15）的一部分中，同时形成在垫圈周向延伸的槽（22）和突起（24）的垫圈。

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