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WO/2014/004345A1 |
A compression ring (42) for an engine (10) is disclosed. The compression ring may have a cylindrical body having an outer surface (44), and a central opening (46) formed within the cylindrical body and concentric with the outer surface o...
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WO/2014/000076A1 |
The present invention relates to a sliding element (1) for use in internal combustion engines, which sliding element (1) is provided with a sliding layer (4) comprising a tungsten matrix and tungsten carbides for lengthening the service ...
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WO/2013/186724A2 |
The invention relates to a piston (100, 100'') for a fluidic actuator (101), having an axis (A) and comprising: a body (102) sliding axially in an associated hollow cylinder (103); at least one groove (104, 104'') obtained peripherally o...
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WO/2013/180065A1 |
The purpose of the invention is to provide a combined oil control ring for automobile engines that is capable of maintaining excellent oil control function even during long periods of engine operation without the occurrence of adhesions ...
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WO/2013/178204A1 |
Method for producing an oil control piston ring, wherein a main part (2) is provided with a running surface profile by mechanically machining the radially outer peripheral surface of the main part, the running surface profile containing ...
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WO/2013/178310A1 |
The invention relates to an oil-lubricated piston compressor, comprising the following: a crankshaft (8) rotatably mounted in a crankcase (22) and having an oil reserve (24) in an oil sump (23); a piston (1) connected by means of a conne...
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WO/2013/178203A1 |
Method for producing an oil control piston ring (1) which has an axial construction height ≤ 2.0 mm and contains two interspaced radially outer running surface ribs (3, 4), an inner peripheral surface and upper (7) and lower flank regi...
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WO/2013/167604A1 |
The invention relates to a sliding body (1), in particular a piston ring (1') for an internal combustion engine. The sliding body (1) has a main part (2) and a coating (3). It is essential to the invention that the coating (3) has a firs...
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WO/2013/166854A1 |
A hydraulic cylinder. A composite sealing system formed by combining an n-shaped sealing ring (5) and a combined sealing element (6) is used for sealing between a piston block (1) and a cylinder body (2) of the hydraulic cylinder, so as ...
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WO/2013/163966A1 |
Problem to be resolved: The most commonly used method of lubricating two-stroke internal combustion engines is to mix the lubricating fluid into the fuel. This results in the two-stroke engine producing a much higher level of emissions a...
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WO/2013/159163A1 |
Improved positioning of piston rings in internal-combustion engines, in which two rings are inserted into a single engagement slot or groove, and ring-positioning pins are attached to prevent the alignment of the openings between the rin...
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WO/2013/158243A1 |
A polish rod seal comprising; a post with a bottom end, top part, and circumferential flange situated between the bottom end and top part; a collar that fits over the top part of the post, the collar having one or more internal channels ...
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WO/2013/144067A1 |
The present invention relates to a component, in particular a piston (1) for an internal combustion engine, comprising a piston head (2) and a piston shaft (3), wherein the piston head (2) has a circumferential annular part (4) and in th...
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WO/2013/139402A1 |
The invention relates to a method for thermally coating a component part stack (1), comprising a component part (11, 15) and a stack component (12, 14), wherein the component part (11, 15) and the stack component (12, 14) are aligned in ...
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WO/2013/136510A1 |
Provided is a tough film which exhibits excellent abrasion resistance, and is specifically provided with crack resistance and releasability. A film (2) formed from a composition obtained by mixing Cr2N with a solid solution of nitrogen d...
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WO/2013/138144A1 |
A solenoid actuated valve (10) holds pressure and volume of an accumulator with low leakage and provides low actuation drag during a release stroke for dumping fluid contents of the accumulator at very low current draw. Two elongate valv...
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WO/2013/137060A1 |
Provided is a combination of a cylinder and a piston ring that is capable of maintaining wear resistance and the smooth shape of the inner-circumferential surface of the cylinder over the long term, when combining a piston ring having a ...
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WO/2013/135325A1 |
There is provided a coated piston ring having a main body composed of chromium steel with more than 10 wt.% of chromium, which main body has an inner circumferential surface, a first flank surface, a second flank surface and an outer cir...
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WO/2013/130685A1 |
An apparatus and method for coupling a piston (18) to a rod (22) to form a cylinder assembly (10) are provided. The piston has a tapped bore (30) extending therethrough for coupling to a first threaded region (63) of the rod. The rod end...
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WO/2013/123337A1 |
A piston ring for sealing a cylinder wall to a piston body is provided. The piston ring includes a ring body of an elastically deformable material which extends substantially circumferentially around an axis and has an inner face that fa...
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WO/2013/120157A1 |
The present invention relates to a sliding element for use in internal combustion engines, provided with a ferrous base (10) covered by a protective surface layer (11 ) comprising at least one nitride applied by physical vapour depositio...
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WO/2013/123301A1 |
A piston ring assembly for sealing a cylinder wall to a piston body is provided. The piston ring assembly includes a plurality of rings stacked in an axial direction one in abutment with another. Each ring has an inner face and an outer ...
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WO/2013/123311A1 |
A piston ring for sealing a cylinder wall to a piston body is provided. The piston ring includes a ring body that extends about an axis and has inner and outer faces. The inner face presents a pair of ridges that extend in a radially inw...
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WO/2013/123284A1 |
A power cylinder assembly for an internal combustion engine is provided. The power cylinder assembly includes a cylinder wall having a channel formed therein and a piston body with a skirt. A piston ring is seated within the channel of t...
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WO/2013/123323A1 |
A piston assembly including a piston body and a piston ring is provided. The piston body has a skirt, a portion of which extends circumferentially continuously and has a skirt diameter. The piston ring has a ring body which extends throu...
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WO/2013/117047A1 |
A concrete piston structure, a pumping system comprising the concrete piston structure, and a concrete pump. The concrete piston structure is arranged in a transport cylinder of the pumping system, comprising a piston connecting rod (1) ...
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WO/2013/119915A1 |
A piston, piston ring and method of construction thereof is provided. The piston ring is L-shaped, having a first portion configured to extend upwardly from a ring groove of a piston along a top land of the piston and a second portion co...
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WO/2013/117174A1 |
The invention relates to a piston ring (10) for pistons of internal combustion engines, comprising a ring running surface (13) coated with a coating agent (19), a ring back (11), and two ring abutting ends (14) spaced apart by a gap (15)...
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WO/2013/117183A1 |
The invention relates to a piston ring (10, 110, 210, 310, 410, 510, 610) for pistons of internal combustion engines, having a ring running surface (14), a ring back (11), an upper ring flank (12), a lower ring flank (13), and two ring j...
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WO/2013/098051A1 |
The present invention relates to a seal unit (10) suitable to be inserted in the first groove (20') of a piston (20) of an internal combustion engine. The seal unit (10) according to the invention comprises a first ring-shaped body (10')...
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WO/2013/090436A1 |
A piston ring is formed from a ring blank, e.g., a wire, that has a cross sectional profile including upper and lower surfaces that are generally parallel and disposed between inner and outer peripheral faces. The cross sectional profile...
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WO/2013/088967A1 |
The purpose of the present invention is to provide a seal ring having excellent resistance to abrasion. The present invention is a seal ring formed from a resin composition containing an aromatic polyether ketone resin (I) and a fluorine...
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WO/2013/082688A1 |
The present invention relates to a sliding component for use in internal combustion engines, provided with a ferrous base (10) coated with a protective surface layer (11) composed of at least one nitride and applied by physical vapor dep...
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WO/2013/069349A1 |
The present invention prevents anchoring between a space expander and a side rail of a combination oil ring. A combination oil ring (10) is provided with a vertical pair of side rails (11, 12) and a space expander (13) arranged therebetw...
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WO/2013/070826A1 |
A piston ring (20) is provided having a bottom surface (22), a top surface (24), an inner diameter surface (26) and at least one running surface (28). A wear protection coating (30) substantially entirely of cobalt is applied to the at l...
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WO/2013/065652A1 |
[Problem] To provide a piston ring which, when used in a high-power engine, can retain, over a long period, the excellent effect of preventing aluminum adhesion. [Solution] The upper and/or lower surface of a piston ring is coated with a...
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WO/2013/062045A1 |
A piston ring (1) that has a sprayed coating (3) containing tungsten carbide and chromium carbide as a hard phase, and nickel as a metallic binder phase, and is characterized in that the sprayed coating (3) is formed by means of thermal ...
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WO/2013/054807A1 |
In the present invention, in order to impart to a combined oil control ring a function for preventing independent rotation of a side rail and to maintain that function over the long term, and in order to provide a counter measure for fre...
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WO/2013/037094A1 |
Disclosed are a light-weight gradient cemented carbide sealing ring and a method for manufacturing same, the sealing ring consisting of a working part and a non-working part; the working part consisting of 90-94% by weight of tungsten ca...
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WO/2013/037436A1 |
Stroke piston for a stroke piston compressor for generating compressed air for a vehicle, more particularly a commercial vehicle, consisting of: a piston body with a piston floor (1a), a piston skirt with piston skirt walls (1d) and pref...
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WO/2013/023270A1 |
The present invention relates to a piston ring, designed in particular for use in the piston groove of an internal combustion engine and/or compressor, comprising a metal base (10) with chamfers (15) in the final dimension thereof, and t...
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WO/2013/020643A1 |
The invention discloses a component (1), in particular a ring or rod element, having a main body (2) which comprises at least one end section (4) which is connectible to an additional end section (6), wherein a first end section (4) comp...
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WO/2013/010520A1 |
The invention relates to an oil scraper ring, comprising a main body (2) having a radially outer running surface (3), a radially inner peripheral surface (6), and an upper (8) and a lower (7) flank, the ring having at least two running s...
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WO/2013/004217A2 |
The invention relates to an oil scraper ring (1) for a piston (13) of an internal combustion engine, comprising several lamellae (2, 3), each having a joint (19, 19'), and a meander-shaped spacer spring (4) having a joint (17). In order ...
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WO/2012/176834A1 |
In the present invention, in order to provide a pressure ring that can be used in the high thermal load environment of a high compression ratio engine, that has excellent thermal conductivity and resistance to thermal degradation, and th...
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WO/2012/176846A1 |
In order to provide a piston ring with high thermal conductivity, which can be used in the high thermal load environment of an engine, and which has excellent scuff resistance and abrasion resistance, and, moreover, in order to provide a...
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WO/2012/176847A1 |
In order to provide a piston ring with high thermal conductivity, which can be used in the high thermal load environment of an engine, and which has excellent scuff resistance and abrasion resistance, by optimizing ion plating film depos...
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WO/2012/173981A2 |
A piston rod and cylinder seal device includes a cylinder defining a piston chamber extending between first and second cylinder heads. The second cylinder head has a spud receiving bore, a pressure passage communicating with the spud rec...
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WO/2012/160138A1 |
The invention relates to a piston ring comprising a piston ring base element (4) made of a material with a first thermal expansion coefficient and comprising a wear protection layer (8) which is arranged on a radially outer surface of th...
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WO/2012/152240A1 |
The invention relates to a piston ring system for a piston (1) of a two-stroke internal combustion engine, said piston ring system having an internal diameter > 400 mm. The piston ring system has a convex sliding surface, a vertex (15, 1...
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