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Matches 1 - 50 out of 7,792

Document Document Title
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...  
WO/2018/197450A1
The present invention relates to an oil scraper ring spring (1) for an oil scraper ring (3), which has the oil scraper ring spring (1), an upper and a lower metal ring (21, 22) and which is provided for being installed in an oil ring gro...  
WO/2018/189255A1
The present invention relates to a piston ring (1) for internal combustion engines provided with a ferrous alloy base (2) that comprises an annular outer surface (3) on which a coating comprising at least one outer layer (6) is applied d...  
WO/2018/187006A1
A split-ring annular seal or retaining ring having overlapping tapered projections at juxtaposed ends. The tapered projection of each juxtaposed end has an enlarged portion forming a tapered ridge that tapers toward a narrow portion form...  
WO/2018/177900A1
A piston ring that is pre-treated by grit blasting to a defined roughness, followed by PVD coating with a metal nitride to a thickness of at least 10µm, leaving peaks and valleys in the coated piston ring. The coated piston ring is then...  
WO/2018/179709A1
The present disclosure pertains to a slide member. This slide member comprises a base material and an amorphous hard carbon film formed on the surface of the base material, wherein the amorphous hard carbon film has an sp2 ratio that inc...  
WO/2018/181383A1
This piston for an internal combustion engine is provided with a piston main body and a piston ring arranged in a ring groove and can move inside of the cylinder, wherein, with piston ring in a free state, the upper surface of the piston...  
WO/2018/179708A1
The present disclosure relates to a sliding member. This sliding member includes a base material and an amorphous hard carbon film formed on a surface of the base material, the amorphous hard carbon film having a graded composition where...  
WO/2018/183895A1
A piston and cylinder arrangement is disclosed in which a field of spaced pockets is provided on the walls of a piston skirt and/or the cylinder to create a seal equivalent between the piston and the cylinder. The pockets may be provided...  
WO/2018/177574A1
The invention relates to a play-free oil scraper ring, the cross section of which comprises: a running surface limb having at least one scraper web which is arranged on a running surface, an upper piston ring flank limb which is connecte...  
WO/2018/172091A1
The invention relates to a piston ring, in particular a compression piston ring, comprising, on a top piston ring flank, at least one recess having a bottom edge extending obliquely with respect to the top piston ring flank, which recess...  
WO/2018/173995A1
In order to provide a composite chrome plating film having excellent wear resistance and little aggression toward a mating material (sliding member), and a piston ring having the film, the present invention is configured so that hard par...  
WO/2018/173423A1
This piston ring (1) consisting of a resin has: an annular body (2) having an inner peripheral surface (2c) and an outer peripheral surface (2d), which face each other, and also having a pair of side surfaces 2a, 2b) for connecting the i...  
WO/2018/157880A1
The invention relates to a piston ring, in particular a compression piston ring, containing a running surface, upper and lower face regions, an inner peripheral surface, and a joint, at least the running surface being provided with at le...  
WO/2018/153923A1
The invention relates to a guide element, which is simply constructed and permits efficient guidance of a piston in the piston receptacle, for example a cylinder. According to the invention, the guide element comprises the following: an ...  
WO/2018/154213A1
The invention relates to an articulated coupling (1) provided for a piston sealing device (2) for a piston (3) that includes a stationary skirt (7) and a sliding skirt (12) connected to one another by a mechanical link between skirts (13...  
WO/2018/155380A1
This piston is provided with an annular piston band (7). The piston band (7) has an annular protrusion (8) formed at one axial end of the piston band (7) and having a larger outer diameter than the remaining portion of the piston band (7...  
WO/2018/149444A1
The invention relates to a cylinder (10) of an internal combustion engine, comprising a cylinder liner (11) and a cylinder piston (12) which is guided in the cylinder liner (11). The cylinder piston (12) has multiple ring grooves (18) wh...  
WO/2018/147122A1
Provided is a coating device that can control film thickness distribution in the circumferential direction of a workpiece. The coating device is provided with: a workpiece rotating device (5) for rotating and revolving a plurality of wor...  

Matches 1 - 50 out of 7,792