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Patent Searching and Data


Matches 701 - 750 out of 6,230

Document Document Title
WO/2003/014600A1
A steel piston ring (1), wherein grooves (5, 6) of generally square shape in cross section of 0.05 to 0.4 mm in the length of one side or generally quarterly circular shape in cross section of 0.05 to 0.4 mm in radius are formed at a cor...  
WO/2003/011497A1
The invention relates to a metal ring assembly having a more or less U-shaped cross-section. The free ends of the flanges of said U are supported on and connected to two annular seats which are disposed on the internal surface of the sup...  
WO/2003/004851A1
The invention relates to a coolable annular support (1) for internally cooled piston rings, comprising an annular body (2) embodied as a circular ring and a cooling channel plate (3), the cooling channel plate (3) being a component of th...  
WO/2003/001044A1
A method for sealing a working zone (98) in a cylinder of a thermal cycle engine (10). The method includes providing a seal ring (14) within a ring groove of the piston (121), and, additionally, applying a backing force on the seal ring ...  
WO/2002/097310A1
An oil ring for an internal combustion engine, comprising a metallic annular body (10) to be mounted around a piston (P) reciprocating inside a cylinder (C) of the engine, said annular body (10) having opposite lateral faces (11), an int...  
WO/2002/088406A1
The invention discloses a piston ring comprising a piston ring substrate. The piston ring substrate comprises at least 50 volume %, of at least one intermetallic alloy, based on the total volume of the wear-resistant composition. The inv...  
WO/2002/088407A1
A piston ring comprises a coating of a wear-resistant composite composition, particularly intended for high temperature applications. The wear-resistant composite composition comprises a ceramic compound and at least 50 volume %, based o...  
WO/2002/070926A1
The invention relates to a reciprocating engine comprising at least one piston (7) housed in a cylinder (2), said piston being provided with at least one piston ring (10) arranged in an allocated piston ring groove (8), which has ends pi...  
WO/2002/068706A1
A wear-resistant sliding member (10) which comprises a base metal (M) and a sprayed coating film (C) formed by thermally spraying a mixed powder comprising 30 to 70 mass % of a molybdenum powder, 10 to 40 mass % of a nickel-chromium allo...  
WO/2002/061153A1
The aim of the invention is to provide a ring support that is as oxide-free as possible, prior to being cast-in with piston material. To achieve this, the ring support is annealed in a vacuum or in a hydrogen atmosphere once the ring sup...  
WO/2002/055912A1
The invention relates to a method for producing a ring support (1) with a sheet metal cooling channel welded thereon (5), which is transfused later with an aluminium melt for producing a piston. The aim of the invention is to improve the...  
WO/2002/052179A1
A low-cost piton ring producing method including measures against wear of the fitting portion of a piston ring having a film formed thereon and against breakage thereof, wherein the thickness of the film (2) adjacent the abutment (7) of ...  
WO/2002/052159A2
An actuator (36) for use in an active mount system includes a piston (72) disposed in a casing (66), and a piston rod assembly (70) that is connected to one of a vibrating component or its support structure. A seal assembly (74), dispose...  
WO/2002/048422A1
The invention relates to a wear protection layer for piston rings in internal combustion engines, consisting essentially of chromium carbides, wolfram carbide, chromium and nickel. The wear protection layer is formed from a mixture of po...  
WO/2002/031354A1
A combustion gas seal for an injector having the function to prevent the leak of a combustion gas when the injector is attached to a cylinder head of an engine, wherein the seal is made of a resin and the whole surface of the combustion ...  
WO/2002/025090A1
The invention discloses a combined gas ring for reciprocating piston ring-piston assembly. The combined gas ring includes elastic groove-ring (1), cap-ring (2), zero to several upper steel disc-ring (3) and enclosure piece (7). Under the...  
WO/2002/024970A2
The invention relates to a wear-resistant coating used for bearing surfaces and flanks of piston rings in internal combustion engines. The wear-resistant inventive coating is obtained by mechanically alloying powders which form a metalli...  
WO2002005989A9
A composite powder and a method of producing said powder, which powder comprises metal ceramic composite that consists of 25-75 per cent by volume of NiCr and of a hard phase, said hard phase being Cr2O3. A composite coating, especially ...  
WO/2002/021025A1
The invention relates to a slot piston ring (1) for the pistons of internal combustion engines or compressors, having a peripheral recess (9) (a so-called scraper ring) that extends close to the slot (2) on the external periphery (3) of ...  
WO/2002/006546A1
A piston ring comprised of a high chromium martensitic stainless steel having a nitrided layer on the surface thereof, characterized in that the stainless steel has a chemical composition, in wt %: C: 0.3 to 1.0 %, Cr: 14.0 to 21.0, N: 0...  
WO/2001/084024A1
A seal ring (1) capable of maintaining a stable sealing capability for long period, wherein a cut part (S) is provided at a circumferential position of the seal ring (1), a projected part (41) is provided at a first cut end part (4), a r...  
WO/2001/077548A1
A spacer expander (1) of a three piece type oil control ring, comprises an outer side (7); protrusions (4) axially protruded from the outer side (7) to support the side rails (2, 3); an inner side (8); and lugs (5) axially protruded from...  
WO/2001/073322A1
The aim of the invention is to provide the pistons of internal combustion engines with profiled ring grooves in a simple manner. To this end, the profile is produced by laser beams.  
WO/2001/073323A2
The sealing gasket (3) with the ends passing by one another, for several degrees, could be more if needed, as well as the sealing gasket (4) with the ends passing by one another in full circle and the few degrees of the second circle so ...  
WO/2001/066982A1
A lubricated hydrostatic seal comprising (a) surface regions having opposing surfaces (11, 113); (b) a plurality of micropores in one or more of said surfaces having a pore geometry; and (c) a flow of fluid (116) between said surfaces, w...  
WO/2001/057394A1
The invention relates to a fuel injection valve with a valve body (1), in which a piston-shaped, longitudinally displaceable valve member (5) is guided over a section of the length thereof (105) in a drilling (2) and which reaches toward...  
WO/2001/053682A1
The invention discloses a piston assembly with tongue-like flat seals. The piston head and the piston skirt are manufactured separately, there are provided many groups of assembled flat seals (1, 2) between the head and the skirt, each g...  
WO/2001/053727A1
The invention relates to an oil-scraper piston ring (1) comprising at least one conical bearing ridge (2, 3) that is provided with a wear-resistant coating (5). Said ring is characterised in that a radial elevation (6) of a predeterminab...  
WO/2001/051833A1
The invention relates to engine engineering and can be used for producing a multipiece piston ring itself for internal combustion engines and also components thereof. The multipiece piston ring has optimised parameters of its components ...  
WO/2001/034875A1
The present invention relates to a method for applying a layer to a piston ring blank (1), in particular for a piston ring of the kind that is intended for use in large diesel engines. A coating powder is supplied to one of succeeding po...  
WO/2001/032948A1
The invention relates to the production of machine components, especially piston rings (3) and/or pistons and/or cylinder liners of engines, preferably two-stroke great diesel engines, that are provided with at least one sliding surfaces...  
WO/2001/033083A1
The invention relates to a liquid tank with centrifugal pump with a substantially vertical pump shaft for discharging of the liquid, wherein the pump is arranged with the intake side at the bottom of the tank and via a drive shaft connec...  
WO/2001/018434A1
The invention relates to a reciprocating piston machine with at least one piston (5). Said piston is provided with at least one piston ring (6) that is located in a corresponding piston ring groove (7) of the piston (5), said piston ring...  
WO/2001/018433A1
The invention relates to a reciprocating internal combustion engine with at least one piston (5). Said piston is provided with at least one piston ring (6) that is provided with at least one channel (11) that extends in the area of the c...  
WO/2001/000979A2
A piston (20) and compression ring (12) combination with a piston having a generally cylindrical configuration for mounting in a cylinder (18) of an internal combustion engine, an annular groove (28) adjacent the top of the piston; and a...  
WO/2000/075501A1
A piston ring assembly consists of an upper ring and a lower ring. Said upper ring and lower ring have a common axis, an outer toward common annular surface, and an inner toward common annular surface and mutual contact surfaces. Said tw...  
WO/2000/066797A1
The present invention relates to a metal matrix-composite material intended particularly for piston rings, said material being produced by mixing two different powder materials and transformation of said powders into an essentially compa...  
WO/2000/065104A1
A method for hardening the grooves of steel pistons or steel piston heads whereby hardening of the bottom of said grooves is avoided. The laser beam is directed onto the sides of the groove in an approximately tangential direction in rel...  
WO/2000/060217A1
An internal combustion engine is provided including at least one cylinder having a conventional valvetrain. The valvetrain consists of at least one camshaft, at least one intake poppet valve per cylinder activated by the camshaft and at ...  
WO/2000/052364A1
The invention relates to a piston (1) which consists of a light metal alloy and which has at least one unreinforced ring groove (2) and at least one piston ring (3). The aim of the invention is to provide a simple means of preventing dam...  
WO/2000/045052A1
The invention relates to an automobile air conditioning system comprised of a compressor having at least one cylinder with movable pistons (2). In order to improve sealing between the surface area of the piston (2) and the wall of the cy...  
WO/2000/040849A1
The invention relates to a reciprocating piston engine with at least one cylinder whose cylinder liner (2) is provided with at least one groove-shaped oil pocket (8) in the area of the running surface (4) of said liner (2), whereby the r...  
WO/2000/040850A1
The invention relates to a reciprocating piston engine comprising at least one cylinder whose cylinder liner (2) is provided with at least one groove (9) which forms an oil pocket (8) and which is situated in the area of the running surf...  
WO/2000/039445A1
The invention relates to a piston, made for reciprocal movement in a cylinder (12) in an internal combustion engine (11), said piston (1) comprising a lateral surface (2) which is provided with at least two spaced peripheral piston ring ...  
WO/2000/036320A1
The aim of the invention is to prevent deposition of material on the piston ring flank (6) of a piston ring (3) for the piston (1) of an internal combustion engine. To this end, said piston ring is provided with channels (7) which are di...  
WO/2000/034682A1
A piston or plunger comprises a piston body (10), preferably made from metal, and a sleeve or sealing member (19) made from a deformable material, such as polytetrafluoroethylene (PTFE). The sealing member (19) is mounted on the piston b...  
WO/2000/005558A1
An improved system for the non-destructive testing of fluid-tight integrity in an installed fluid transfer line such as a drain pipe, vent and wastewater system of a building. A removable test baffle is held in place between ends (102, 1...  
WO/1999/058839A1
The invention relates to a guide arrangement, especially for a piston-cylinder arrangement, comprising a cylinder (3) in which a bearing section of a piston (2) can be displaced axially along its inner bore (5) configured as a piston bea...  
WO/1999/056042A1
Split sealing ring for any piston system, like internal combustion engines, compressors, for pipe connections and hydraulic devices. The ring is fitted with its inner diameter and face distance to the piston groove and to the ring groove...  
WO/1999/037941A1
The invention concerns an internal combustion engine piston comprising a plurality of holes (10) bored from the piston head (2) parallel to the axis thereof and opening on the first piston groove (4) closest to the head (2). Said holes (...  

Matches 701 - 750 out of 6,230