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WO/2005/078268A1 |
A gas sealing function and an oil controlling function are provided in a TOP ring, and this enables this single TOP ring to achieve an oil consumption amount and blowby amount in the same level as those obtained by a three-ring set. The ...
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WO/2005/075704A1 |
The invention relates to a method for the production of a local reinforcement of a component (1) of an internal combustion engine, wherein the surface of the component (1) is partially melted in the area to be reinforced. A reinforcing b...
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WO/2005/073437A1 |
A composite chromium plating film containing hard particles in fine cracks in the form of a network formed on the film, wherein the above fine cracks account for 10 to 20 area % of the surface thereof, the above fine cracks distribute in...
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WO/2005/071355A1 |
A method and a device for discriminating an upper surface from a lower surface, particularly for detecting the directivity of an item having upper and lower surfaces which are hard to be discriminated merely with the naked eye in a membe...
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WO/2005/066482A1 |
A wire material for a coil expander, from which wire material a coil expander unlikely to have disadvantage such as abnormal wear and resultant reduction in strength can be produced without troublesome work. A wire material for a coil ex...
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WO/2005/064212A2 |
The present invention relates to a multi-layered seal ring capable of expanding for installation onto a shaft, rod or other cylindrical member, and then once in position, provides a seal as though it were a continuous solid ring allowing...
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WO/2005/061751A1 |
The invention relates to a piston ring comprising a running surface having a running surface profile, and an upper flank surface and a lower flank surface. At least the running surface is provided with a vapour-deposited layer such that ...
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WO/2005/043013A1 |
The invention relates to an oil control ring (10) for pistons of internal combustion engines. The aim of the invention is to provide an improved shape-adaptation capacity in comparison to prior art, with a tangential force that enables t...
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WO/2005/040645A1 |
A three piece-combined oil ring composed of three pieces including axially upper and lower pair of side rails (222) and a spacer expander (224) that is assembled between the side rails and presses the side rails (222) from the inner peri...
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WO/2005/023504A1 |
A method of dividing a ceramics cylindrical body and the shapes of the cutout parts of the cylindrical body. In the method, first and second cutout parts are formed in the inner peripheral surface of the ceramics cylindrical body at posi...
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WO/2005/024278A1 |
The invention relates to an oil scraper ring for pistons of internal combustion engines, said oil scraper ring comprising a disc (1) provided with a bearing surface (h) having an asymmetrical crowned form with a vertex line (3) extending...
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WO/2005/024276A1 |
The invention relates to an oil scraper ring for pistons of internal combustion engines, said oil scraper ring comprising a disc (1) that is provided with parallel flanks and a bearing surface (h) having an asymmetrical crowned form with...
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WO/2005/024277A1 |
The invention relates to a multipart oil wiping ring for pistons of internal combustion engines, comprising two steel strip-type lamellae with parallel sides, the running surfaces of which are provided with a convexly asymmetric shape ha...
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WO/2005/022011A1 |
The invention relates to an oil scraper ring groove ring groove arrangement for pistons of internal combustion engines. The inventive arrangement comprises a disc (1) that is provided with parallel flanks and a bearing surface (h) having...
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WO/2005/019706A1 |
A spacer expander (50) installed between a pair of upper and lower side rails (30) and (40) in a combined oil ring (20), wherein a plurality of inner peripheral projected portions (51), (52), and (53) axially projected along the circumfe...
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WO/2004/111503A1 |
The invention relates to a reciprocating piston machine comprising at least one piston (6) which is received in a cylinder and is provided with at least one piston ring (9) arranged in an associated piston ring groove (8). According to t...
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WO/2004/097272A1 |
Disclosed is a piston for a large-size engine, comprising a piston crown (1) that is made of an iron material and is provided with circumferential piston ring grooves (4) for receiving one respective piston ring (3). At least the top pis...
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WO/2004/094809A1 |
An oil ring (1) has an annular oil ring body (10) and a coil expander (20). The oil ring body (10) has a pair of rail portions arranged at its axially upper and lower portions and has a fit joint. The coil expander (20) is assembled to t...
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WO/2004/090389A1 |
A piston ring (7) for use in an annular groove (3) of a piston (1) of a large two-stroke internal combustion engine, particularly a uniflow-scavenged crosshead engine. The piston ring (7) has an upper ring face (16) and a lower ring face...
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WO/2004/090318A1 |
A combination oil ring that can provide, even when a coil expander formed from a shape memory ally is used in it, sufficient tension and excellent oil scraping and oil controlling functions. A combination oil ring is constituted of an oi...
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WO/2004/088179A1 |
The invention relates to a piston ring comprising a slit forming a joint, a bearing surface, an inner peripheral surface, and upper and lower flanks extending thereinbetween. An inconstant cross-sectional interruption is provided in the ...
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WO/2004/079221A1 |
This invention relates to a piston for, for example, a vehicular shock absorber. The piston for a shock absorber according to the present invention consists of a piston body and a piston ring fitted around an outer circumferential surfac...
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WO/2004/079177A1 |
A reciprocating engine (1) has a piston ring (5), a piston ring (7), and a gas passage (15). The piston ring (7) forms an annular gas chamber (6) between itself and the piston ring (5) and is adjacent to the piston ring (5) such that a p...
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WO/2004/074717A1 |
A combination oil ring capable of solving such problems with a conventional combination oil ring that, when the combination oil ring is fitted to the ring groove of a piston in the expanded state of the abutment part of the ring body, a ...
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WO/2004/067940A1 |
A mechanism for sealing gaps between a piston assembly and a cylinder for an internal combustion engine is provided. A sealing member inserted into an upper wall of a groove holding the oil ring to block a gap between them. The oil ring ...
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WO/2004/040178A1 |
The valve comprises a housing (3) having a valve seat (4) for a flap (2) that is rotationally mounted on a drive shaft (1). a double wound lamellar ring (5) is arranged Outside and around the flap(2) in a peripheral groove of the flap (2...
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WO/2004/040174A1 |
An oil ring with which sliding friction in a high speed running range of a piston can be reduced and having excellent ability to reduce fuel consumption. The oil ring has a substantially letter I-shaped cross section where two rails are ...
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WO/2004/038207A1 |
The present invention relates to a gap-sealed piston ring, a gap-sealed ring-reduction piston engine and a ring-reduction reciprocating mechanism, wherein, the gap-sealed ring-reduction piston engine and the ring-reduction reciprocating ...
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WO/2004/036019A1 |
A piston assembly (100) having a piston (112) and a piston ring (114). The ring (114) mates to the piston (112) in a groove (130) on the outer surface of the piston (112). The ring (114) includes two side walls (124, 126) that connect be...
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WO/2004/023005A2 |
A synthetic annular sealing ring is provided. The ring has a break therein with first and second complementary ends defining opposite sides of the break. An internally directed annular section of the ring has a first and second internal ...
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WO/2004/018728A1 |
The present invention relates to a method including thermal spraying a chromium nitride or a chromium carbide and chromium silicide coating material onto an article, such as a piston ring (20). The coating material may be in a powder for...
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WO2003044354A9 |
The invention relates to a piston ring with an opening. One end of the opening has extension 2 or 3 with 3-5mm length, another end of the opening has corresponding overlapped part 3 or 2. The extension 2 or 3 has retaining surface 10 at ...
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WO/2004/011827A1 |
A seal ring that maintains stable sealing capability for a long period. In a first seal portion (4), a line contact portion that is in linear contact with a side-wall face, on the side of fluid not to be sealed, of an annular groove is t...
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WO/2004/011793A1 |
A piston ring for an internal combustion engine, comprising a film formed of a heat resistant material having solid lubricant dispersed at least on one surface thereof, wherein the heat resistant material is formed of at least either of ...
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WO/2004/003408A1 |
The invention concerns a piston segment (1) for an internal combustion and compression ignition engine. The invention is characterized in that the segment includes at its internal diameter (7) abrading means (15).
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WO/2004/001215A1 |
A reciprocating engine (1), comprising a cylinder (2), a piston (3) reciprocatingly moving in X−direction inside the cylinder (2), a connecting rod (5) rotatably connected, at a small end part (4), to the piston (3) through a piston pi...
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WO/2003/100301A1 |
A seal ring for sealing an annular clearance between two members installed rotatably relative to each other, wherein a relief part (5) is provided in the two members on the side surface sides corresponding to the slide wall surface (72) ...
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WO2003008845B1 |
The invention relates to a sliding surface with areas which are harder in comparison with the base material. Said surface is easy to produce and has a long surface life. The harder areas in comparison with the base material are at least ...
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WO/2003/098079A1 |
The invention relates to a method for producing anti-wear coatings on a steel piston ring, according to which, in a first working step, the bearing surface is at least partially provided with a bearing surface coating, and in a second wo...
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WO/2003/078873A1 |
A seal ring for sealing an annular clearance between two members installed so as to be rotatable relative to each other, wherein a flow passage allowing leakage when cut end parts are butted against each other is provided at a cut part f...
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WO/2003/072844A1 |
The invention discloses a machine part surface (22), coated at least partly with a coating material by a thermal spray process. Said coating material has been exposed to heat treatment at an elevated temperature and for a time effective ...
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WO/2003/072845A1 |
The invention relates to a piston ring (1) coated with a coating material by a thermal spray process, exposed to heat treatment of said coating material at an elevated temperature and for a time effective to at least partially diffuse sa...
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WO/2003/070999A1 |
The invention relates to a piston ring for an internal combustion engine, consisting of an iron-based material and comprising an anti-wear coating (3) at least in the vicinity of the bearing surface (2). Said coating is applied according...
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WO/2003/071168A1 |
An oil-control ring (10) includes two spaced apart scraping edges (12) and (14) for aiding distribution of oil (not shown) on an outer surface (16) of a piston (18) on which the ring (10) is fitted and an inner surface (20) of a cylinder...
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WO/2003/062680A1 |
A spraying piston ring having a spray coating excellent in initial fitness and having a seizure resistance and a wear resistance. The spray coating (3) of the piston ring (1) contains 2 to 40 mass% of Sn, 5 to 50 mass% of graphite, and a...
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WO/2003/058096A1 |
ABSTRACTA side rail is formed into a ring shape having its generally rectangular section that has an outer surface 3 formed with a pair of edge surfaces 5 of small radius, and an intermediate surface 6 of large radius of curvature formed...
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WO/2003/056176A1 |
The present invention relates to a plastics material with self-lubricating action which is particularly suitable for the production of sealing elements for reciprocating compressors, said material comprising a wear-resistant polymer matr...
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WO/2003/054371A1 |
The invention relates to a piston ring carrier with a cooling channel used for casting a light metal piston for a combustion engine. Said piston ring carrier comprises a casting ring (1) supporting the cooling channel (4) which is limite...
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WO/2003/027542A1 |
The inventive piston seal comprises seal rings (3) arranged in grooves (1) of a piston (2), elastic elements (5) for pressing the rings (3) against the wall of a cylinder (6), the piston (2) being arranged therein. Each seal ring (3) con...
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WO/2003/021137A2 |
The invention relates to a cooled ring carrier that is cast into a piston for internal combustion engines. According to the invention, the zone of the ring carrier facing the cooling channel is coated, thereby preventing air from escapin...
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