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WO/2022/131057A1 |
This film comprises Cr, Ti, Si, and N, wherein the Ti is contained in an amount of 0 at% to 25 at% (exclusive of 0 at%), and the film has a NaCl-type crystal structure. This piston ring comprises: a substrate; and said film provided to c...
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WO/2022/117821A1 |
A piston ring (1) comprising a first annular body (10) and a second annular body (20), which annular bodies (10, 20) are arranged adjacently in the axial direction (A) and concentrically with respect to one another, wherein the first ann...
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WO/2022/118988A1 |
The purpose of the present invention is to provide a piston ring that has, on an outer circumferential surface of a base material thereof, a wear-resistant layer formed of a wear-resistant material and that allows the wear status of the ...
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WO/2022/101416A1 |
A method of coating a piston ring comprises: providing at least first and second piston rings in a coating chamber; spacing the piston rings apart, so that the first piston ring is spaced from and not in contact with the second piston ri...
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WO/2022/065126A1 |
This abutment gap estimation device comprises: a part temperature estimation unit that estimates the temperature of a part other than a ring groove in a piston constituting an internal combustion engine; a ring groove temperature estimat...
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WO/2022/058249A1 |
A sliding element according to the invention, in particular a piston ring, has a coating which has the following layers from the inside to the outside: an adhesive layer, a carbon-containing functional layer and an outer amorphous DLC la...
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WO/2022/053088A1 |
The invention relates to a piston ring having a ring body (1) and a ring joint (9), said ring body (1) having a first (7) and a second ring body end (8) which lie opposite each other and which form the ring joint (9). The first ring body...
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WO/2022/053087A1 |
The invention relates to a piston ring, comprising a ring body (1) and a ring joint (9), wherein the ring body (1) comprises, lying opposite one another, a first (7) and second ring body end (8) which form the ring joint (9), wherein the...
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WO/2022/048832A1 |
The invention relates to a piston ring system for an internal combustion engine, comprising a first compression piston ring (2), a second compression piston ring (4), and an oil scraping piston ring (6). The first compression piston ring...
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WO/2022/030476A1 |
The present invention further improves sliding surface durability in a metal member that slides against other members. This metal member has an aluminum metal substrate and an aluminum titanate Al2TiO5 film formed on a sliding surface, w...
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WO/2022/028747A1 |
The invention relates to an oil scraper ring (4) comprising a ring element (6), having an upper ring edge (8), a lower ring edge, a ring inner side and a ring outer side (14), wherein the ring element (6) is provided with two opposing co...
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WO/2022/022875A1 |
The invention relates to an oil scraper ring for pistons (2) of an internal combustion engine, wherein an oil scraper piston ring groove (4) of the piston (2) is provided without at least one oil drain bore, comprising a ring body (6) ha...
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WO/2021/259456A1 |
The invention relates to a wear ring (10) for guidance of two machine components (30, 32) arranged movably relative to one another along/around a movement axis (34), which is formed in one piece from a plastic or a reinforced plastic mat...
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WO/2021/259116A1 |
A seamless seal piston. A seamless seal ring (2) is provided on the periphery of a piston head intermediate (1), and a separating groove and filling material (3) is provided between the seal ring (2) and the piston head intermediate (1).
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WO/2021/240846A1 |
Provided is a compressor in which abrasion resistance of a sliding material has been improved. To solve this problem, a compressor 40 comprises a compression chamber 43 that is formed inside a cylinder 41 and that compresses a gas, and a...
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WO/2021/220549A1 |
Provided is a wire material of which a first side surface for forming an outer peripheral surface of a piston ring includes a tapered surface and a protruding surface. The protruding surface is divided into a first portion and a second p...
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WO/2021/175905A1 |
The piston ring arrangement (1) comprises a first and a second endless sealing ring (2, 4) and an elastic ring carrier (3), wherein: the first and the second sealing ring (2, 4) extend in a peripheral direction (U) and each have an outer...
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WO/2021/170460A1 |
The invention relates to a piston ring having a main body. The main body has an inner peripheral surface, a first flank surface, a second flank surface and an outer peripheral surface. A first hard chromium layer having a network of crac...
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WO/2021/165462A1 |
The present application relates to a sliding element, in particular a piston ring, and to a method for producing same, wherein the sliding element comprises a base material made of martensitic or austenitic stainless steel having a chrom...
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WO/2021/161041A1 |
Herein is described a shaft mounting assembly comprising an elongate shaft (32) comprising an outer surface having a substantially circular cross-section; a cylinder (35) having an inner surface defining a bore, the bore housing the shaf...
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WO/2021/153425A1 |
A piston ring manufacturing method according to the present disclosure includes (A) a step of cleaning the surface of a base material of the piston ring, and (B) a step of forming a coating containing Si and N by vapor deposition in a ch...
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WO/2021/153426A1 |
A piston ring according to this disclosure comprises a substrate and a coating film that is provided to cover at least a portion of the substrate surface and that contains elemental metals, Si, and N. The elemental metals include at leas...
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WO/2021/148076A1 |
The invention relates to a method for repairing a sealing-air apparatus (10) for a turbomachine (100) comprising the steps of: a) providing the sealing-air apparatus, which is designed to seal a sealing gap (50) between two components (3...
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WO/2021/143961A1 |
The invention relates to a multi-part oil control ring (1), comprising a slotted spring element and at least one lamella element (3, 4), which is operatively connected to the spring element and is provided with a butt joint (7). The spri...
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WO/2021/139997A1 |
The present invention relates to a method for producing an annular groove (1) of a piston (2) of an internal combustion engine, which annular groove has a groove base (4) which transitions into lateral groove walls (6, 6') in respective ...
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WO/2021/140851A1 |
Provided is a sliding member which has a DLC film with excellent heat resistance, by which high abrasion resistance can be achieved regardless of whether a lubricating oil contains an organic molybdenum-based compound, and by which a low...
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WO/2021/127695A1 |
A piston ring set of a cryogenic pump includes a first piston ring and a second piston ring which are dissimilarly shaped and cooperatively shaped to form a hollow cylindrical shape when in abutment to one another. The first piston ring ...
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WO/2021/124788A1 |
Provided is a combination of a cylinder and a piston ring with which it is possible, irrespective of the material applied in the inner peripheral surface of the cylinder, to reduce the amount of wear in a hard carbon film forming the out...
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WO/2021/117599A1 |
To provide a long-life pressure ring without increasing an outer peripheral abrasion in the vicinity of a joint regardless of a ring material or existence or nonexistence of an outer peripheral hard coating, an annular pressure ring has ...
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WO/2021/078803A1 |
A back-up ring (1) for a gland seal includes at least two part ring portions (2,4). Each part ring portion comprises first (6, 10) and second (8, 12) ends. Each end has an undulating surface (22, 24) for overlapping in engagement with a ...
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WO/2021/075326A1 |
The present invention addresses the problem of providing a compression ring which has favorable thermal conductivity and is capable of maintaining tension in hot environments.　The present invention solves this problem by providing a co...
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WO/2021/065729A1 |
This shock absorber (10) is equipped with a piston main body (61) and a piston band (62). The outer-circumferential section (60) of the piston main body (61) has a stepped section (103) comprising a large-diameter surface section (101), ...
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WO/2021/066058A1 |
[Problem] To provide: a sliding member which is equipped with a coating film having constant and stable chipping resistance and wear resistance and also having excellent peeling resistance (adhesiveness); and the coating film. [Solution]...
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WO/2021/050471A1 |
A piston ring with a coated outer surface is provided. The coating is disposed on end sections of the outer surface adjacent a gap. Typically, a middle section of the outer surface located between the end sections is not coated. The coat...
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WO/2020/263993A1 |
A dry-lubricating apparatus, for press fitting onto a mating part, includes (a) a frame, (b) a rubber gasket fixed to the frame to create an interference with a mating surface of the mating part so as to enable the press fitting, and (c)...
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WO/2020/251058A1 |
According to the present invention, the outer circumferential surface (1) of a side rail (11) is provided with: a pair of lateral adjacent parts (3, 4); an outermost diameter part (6); and at least one recessed part (7, 8). The contour l...
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WO/2020/226338A1 |
The present invention relates to a piston pump having a seal ring which is closely adhered to the inner surface of a cylinder, and which, even when worn down while a piston reciprocates inside the cylinder, expands by the worn down amoun...
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WO/2020/216477A1 |
The invention relates to a two-part oil scraper ring (2). This oil scraper ring (2) comprises a ring body (4) and a tube spring (6) as an expander. The tube spring (6) has a tube diameter D. The ring body (4) has an exterior (20) and an ...
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WO/2020/209133A1 |
Provided is a sliding member having a hard coating with excellent heat resistance and oxidation resistance even in high-temperature environments in the air. This sliding member 100 comprises: a substrate 10; and an amorphous carbon film ...
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WO/2020/201745A1 |
A piston (200) foran internal combustion engine (100) is provided. The piston includes a piston body (210) including an upper combustion surface(211), an annular side wall (213) with a ring belt region(214), and a cooling gallery (240) l...
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WO/2020/188038A1 |
The invention relates to an internally clamping rectangular sealing ring (40) for sealing a shaft (20) with respect to a housing (10), wherein the rectangular sealing ring can be inserted into a groove (13) which is arranged circumferent...
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WO/2020/180925A1 |
A piston ring (10) providing improved performance during operation, including reduction in blowby gases and improved oil control, is provided. The piston ring (10) includes a rail (14) disposed in a recess (16) of a wire (12). The wire (...
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WO/2020/163677A1 |
A piston ring providing improved performance during operation, including reduction in blowby gases and improved oil control, is provided. The piston ring includes an upper layer, a lower layer, and a middle layer each formed from a powde...
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WO/2020/162702A2 |
The present invention relates to an oil ring for an internal combustion engine and a piston assembly including same. The oil ring for an internal combustion engine according to the present invention comprises: a compression part protrudi...
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WO/2020/157834A1 |
This method for manufacturing a seal ring (10) includes: a base ring forming step of using a resin as a material to form a base ring (30) in which an abutment (47) having an overlap in at least an axial direction exists in a gas-tight ma...
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WO/2020/158949A1 |
[Problem] To provide a multi-piece oil ring with which the amount of engine oil consumed can be reduced without reducing oil sealing performance between lower surfaces of side rails and lower surfaces of oil ring grooves, even when the t...
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WO/2020/156999A1 |
A piston assembly for an internal combustion engine includes a cylinder bore and a piston having exactly two ring grooves, a scraper ring positioned in the upper ring groove, and an oil control ring positioned in the lower ring groove. A...
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WO/2020/149274A1 |
A gas compressor that compresses gas. The gas compressor comprises a cylinder liner, a piston member that includes a piston that moves reciprocally in an interior space of the cylinder liner and a piston rod that is connected to the pist...
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WO/2020/120874A1 |
This hydraulic percussion apparatus (2) comprises: a guidance body (3); a striking piston (6) mounted to slide inside the guidance body; a sealing device (12) mounted in an annular retention groove (5) provided on the guidance body so as...
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WO/2019/107442A9 |
[Problem] To provide a sliding member, such as a piston ring for an internal combustion engine, which exhibits low friction and excellent toughness. [Solution] This problem can be solved by a sliding member 10, such as a piston ring, in ...
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