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Patent Searching and Data


Matches 1 - 50 out of 7,869

Document Document Title
WO/2019/208621A1
In order to provide a piston ring having excellent thermal sagging resistance and excellent side surface wear resistance, even in a high temperature and pressure environment exceeding 300°C and up to 400°C, steel containing, as % by ma...  
WO/2019/208031A1
Provided are a fluid machine with which it is possible to increase abrasion resistance and extend maintenance cycle, and a machine element and a fluorine resin material for use therein. The machine element comprises a member (31) having ...  
WO/2019/208182A1
In a compressor provided with a cylinder, and a piston which reciprocates in an axial direction inside the cylinder, this piston ring seals a gap between an outer circumferential portion of the piston and an inner wall surface of the cyl...  
WO/2019/203358A1
The piston ring according to the present invention, in a cross-sectional view along an axial direction, has an outer peripheral surface including a tapered part that widens diametrally outward from an upper side of the axial direction to...  
WO/2019/203905A1
The subject matter described herein relate to a segmented piston seal system. The segmented piston seal includes a first semi-circular section (FSCS) that includes a first locking structure at opposite ends of the FSCS. The segmented pis...  
WO/2019/192828A1
The invention relates to a piston ring with improved wear properties, said piston ring having a running surface, an upper ring flank, a lower ring flank, and an inner surface. The piston ring has a radius R, and a contoured running surfa...  
WO/2019/194104A1
An oil control ring according to the present invention comprises: a pair of side rails; and a spacer expander disposed between the pair of side rails. The spacer expander has: a plurality of ear parts which inner peripheral surfaces of t...  
WO/2019/185546A1
A piston ring is provided. The piston ring comprises a main section extending along a circumferential direction around a geometrical axis, a first tongue section and a second tongue section, wherein, in use, the first tongue section is c...  
WO/2019/179643A1
The invention relates to a piston ring for a two-stroke engine with a wear display, comprising a piston ring body with an outer face, two piston ring flanks, and a piston ring inner face. The invention is characterized in that the outer ...  
WO/2019/167241A1
A piston ring (1) is configured so that a recess (100) is formed in an outer sliding surface (10) and has: a deepest section (110) where the outer diameter of the recess (100) is smallest; and a sloped section (120) which has a diameter ...  
WO/2019/166144A1
The invention relates to an MF expander spring (20) for a three-part oil scraper ring (2, 4, 6, 8). This comprises a steel strip that is corrugated in a trapezium- or diamond-shape in the axial direction, wherein the MF expander spring (...  
WO/2019/142668A1
An oil ring 1 has an oil ring body 10 provided with a land 30 protruding diametrally outward, and a coil expander 20 that is mounted on a diametrally inward portion of the oil ring body and that biases the oil ring body diametrally outwa...  
WO/2019/143267A1
The solution relates to the field of mechanical engineering, specifically to engine manufacture, and can be used in piston-cylinder assembly parts for internal combustion engines. The present ring, comprising an inner surface and an oute...  
WO/2019/142380A1
The purpose of the present invention is to improve seal performance and reduce oil consumption. According to the present invention, in a state in which a combination oil ring is mounted in an oil ring groove and yet to be inserted into a...  
WO/2019/130769A1
Provided is a sliding member which simultaneously exhibits high abrasion resistance and a low friction coefficient and which has a hard carbon film having excellent peeling resistance. This sliding member 100 is characterized by having a...  
WO/2019/124389A1
This piston ring for an internal combustion engine comprises a resin composition and has a joint section, wherein the ratio (m/d1) of the dimension m of a gap in the joint section in a free state with respect to the dimension d1 of the o...  
WO/2019/105979A1
A piston ring (10) has a running surface (12) and flank surfaces (14) which are coated, wherein the uppermost layer of the running surface (12) is a hydrogen-containing or hydrogen-free DLC layer, and said piston ring (10) is characteriz...  
WO/2019/107442A1
[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 ...  
WO/2019/091683A1
The invention relates to a combination of a piston and a two-part oil scraper ring. The piston has a stepped piston ring groove having a main groove and a secondary groove. The two-part oil scraper ring comprises a base, which has a ring...  
WO/2019/087562A1
The present invention can be used for an internal combustion engine having the principal parts thereof made of an aluminum alloy, and exhibits excellent productivity. Provided are a pressure ring, an internal combustion engine using the ...  
WO/2019/081240A1
The invention relates to a piston compressor (1) for compressing a working fluid, particularly a liquid or gaseous fuel, comprising a piston (4) that can move back and forth in a borehole (2) of a cylinder (3) and defines a compression c...  
WO/2019/084320A1
Disclosed herein are embodiments of an aging heat treatment that can be used to replace conventional aging steps when making alloy embodiments of the present disclosure. Embodiments of the disclosed aging heat treatment reduce cost and c...  
WO/2019/079644A1
A continuous length of formed metal retaining material can be cut to the partial or full circumference or perimeter of at least one assembly component and disposed in a groove of at least one assembly component to form a retaining ring e...  
WO/2019/078052A1
Provided is a sliding member which has a hard carbon film that has a good balance between high separation resistance and high wear resistance even if the thickness thereof is 3 μm or more. A sliding member 100 according to the present i...  
WO/2019/074620A1
An apparatus and a method include a piston in a cylinder bore for an internal combustion engine. The piston has an outer cylindrical surface with a first annular groove adjacent a second annular groove. The first annular groove is adjace...  
WO/2019/072581A1
The present invention relates to a bronze-polytetrafluoroethylene compound based on an oxidation-resistant bronze powder, and to a method for producing the bronze-polytetrafluoroethylene compound. In another aspect, the present invention...  
WO/2019/069748A1
A side rail 1 comprises: an outer peripheral surface 14 that faces outward in the radial direction; an inner peripheral surface 13 that faces inward in the radial direction; a first axial-direction side surface 11 that faces toward one s...  
WO/2019/065830A1
Provided is a piston ring to be combined with a low friction cylinder liner, with which it is possible to obtain a friction reducing effect of the low friction cylinder liner even at low rotational speeds when the rotational speed of an ...  
WO/2019/064525A1
Provided are a segment, a combined oil ring, and a segment manufacturing method, with which independent rotation of the segments can be prevented while accommodating lower tensile force in the combined oil ring. The inner-circumferential...  
WO/2019/054355A1
In order to provide a spacer expander for a combined oil control ring with which an excellent oil control function can be maintained without generating adhesion between the spacer expander and a side rail even when an engine is operated ...  
WO/2019/048190A1
The present invention relates to a piston (1) for an internal combustion engine (10) having a piston head (2) and a piston skirt (3), wherein the piston head (2) has a circumferential annular part (4) and, in the region of the annular pa...  
WO/2019/045520A1
The present invention provides a manufacturing method for a piston ring, the method comprising the steps of: placing a piston ring inside a physical deposition apparatus, introducing inert gas thereinto, and feeding reactive gas containi...  
WO/2019/039519A1
This oil ring (1) is provided with an annular body (2) having: an inner peripheral surface (2a); an outer peripheral surface (2b); one side surface (2c) and the other side surface (2d), which are substantially perpendicular to the inner ...  
WO/2019/034293A1
The invention relates to a piston ring set comprising three piston rings, an upper compression ring (4) having a low butt play and good sealing, a central oil wiper ring (6) and a lower compression ring (8), likewise having low butt play...  
WO/2019/032894A1
A ringset (220, 230) is configured to be arranged on a piston (226) for sealing a gas in a high-pressure region of a cylinder (260) in the absence of oil or other liquid lubricant. The ringset includes one or more rings made from a high-...  
WO/2019/032904A1
A sealing ring (200) includes a first sealing element (220) having a first mating surface and a second sealing element (230) having a second mating surface. A high-pressure boundary (250) extends across at least a portion of the first se...  
WO/2019/032922A1
The present disclosure provides a sealing ring assembly having a ring and one or more gap cover elements, configured to seal a high-pressure region from a lower pressure region of a piston and cylinder device. The ring may be segmented, ...  
WO/2019/032919A1
The present disclosure provides a sealing ring assembly (402) with one or more piston-integrated gap cover features, configured to seal a high-pressure region from a relatively lower pressure region of a piston (410) and cylinder device....  
WO/2019/032867A1
A sealing ring segment (200) of a sealing ring assembly may include three layers (201, 202, 203). The middle layer (202) is permeable to gas, thus allowing radial pressure-balancing on the sealing ring segment to reduce wear. The gas-per...  
WO/2019/026335A1
In a reciprocating compressor in which a rocking piston mechanism is adopted, a lip ring is disposed between an outermost peripheral portion of a rocking piston and a cylinder, or the lip ring is disposed in an outer peripheral portion o...  
WO/2019/020143A1
Method for producing a piston ring consisting of steel or cast steel, by providing a main body comprising a running surface, an inner circumferential surface, upper and lower flank regions and transitional regions from the running surfac...  
WO/2019/015818A1
The present invention relates to a piston ring, having an annular body (2), a wear protection layer (6) applied onto the annular body (2) by thermal spraying; and a cold-solidified running-in layer (8) applied onto the wear protection la...  
WO/2019/008780A1
Provided is a combined oil ring with which friction occurring during oil ring sliding, as well as the amount of oil consumed during same, can be reduced. The shape of the outer circumferential surface of an upper segment (among a pair of...  
WO/2019/007455A1
The invention relates to a multipart oil scraper piston ring containing a slotted spring element and at least one lamella element which is operatively connected to the spring element and is provided with an abutting region. The abutting ...  
WO/2018/234244A1
The invention relates to a piston ring composed of a fibre composite material with fibres and a matrix, wherein the matrix comprises carbide and a free carbon phase with a fraction of at least approximately 5 % by volume. The invention a...  
WO/2018/235750A1
[Problem] To provide: a sliding member having a coating film exhibiting constant and stable chipping resistance and wear resistance and having excellent peel resistance (adhesiveness); and the coating film. [Solution] The problem is addr...  
WO/2018/233753A1
The invention relates to an oil control ring, containing a running surface region, formed by at least two running surface webs, an inner circumferential surface and upper and lower flank surfaces extending between the running surface reg...  
WO/2018/220192A1
A piston ring and a method of manufacturing a piston ring for a piston of a reciprocating internal combustion engine. The piston ring comprises a body having an outer circumferential surface. A tribological coating is formed on the outer...  
WO/2018/215269A1
A piston ring is formed from a steel substrate consisting of the carbon in a range of 0.80-0.95wt.%, silicon in a range of 0.30-0.55 wt.%, manganese in a range of 0.25-0. wt.%, phosphorus in a range of up to 0.04 wt.%, sulfur in a range ...  
WO/2018/198173A1
This side rail (1) is configured to have: an outer peripheral surface (14) facing radially outward; an inner peripheral surface (13) facing radially inward; a first axial side surface (11) facing one axial side; and a second axial side s...  

Matches 1 - 50 out of 7,869