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WO/2023/234331A1 |
Provided are: an air-driven actuator that is easy to machine, makes it easy to obtain a desired cylinder speed, and can easily be made more compact, particularly when making the air-driven actuator more compact while widening the interva...
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WO/2023/189457A1 |
The present invention makes it possible to improve recyclability, achieve a reduction in weight, and improve environmental friendliness. To this end, a cylinder liner (30) according to the present disclosure is provided only to a part of...
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WO/2023/181980A1 |
[Problem] To reduce the amount of wear of a lip ring having PTFE as a main component. [Solution] A sliding mechanism for a rocking piston type oil-free reciprocating compressor comprises a cylinder, and a lip ring. The cylinder has a met...
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WO/2023/134933A1 |
The invention relates to a part comprising a coating made of a composite material comprising a metal matrix and metal reinforcements, the reinforcements having a hardness greater than or equal to 550 Hv.
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WO/2023/067833A1 |
Provided is a cylinder having grooving in a cylinder inner circumferential surface. The grooving includes a honed groove and a recessed groove having a larger groove width and a larger groove depth than the honed groove. The honed groove...
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WO/2023/058825A1 |
A rotary cylinder according to one embodiment of the present invention comprises: a hollow spindle that rotates; a spring disposed inside the spindle; and a cam, which is coupled to the spindle and rotates together with the spindle, wher...
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WO/2023/033779A1 |
The invention discloses electro-hydraulic servo drive containing a hydraulic cylinder (1) with a piston (3) and a rod (7), hydraulic lines (8, 17), an electro -hydraulic amplifier (9), an electronic control unit (5), the hydraulic cylind...
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WO/2023/275732A1 |
A trigger dispensing head (4) applicable to a bottle of a trigger dispensing device comprises a cylinder chamber (14), a main vent passage (26), a sleeve (30), a secondary vent passage (50), a piston (80), a suction duct, a dispensing du...
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WO/2022/204469A1 |
A manifold system that includes a gas cylinder assembly that includes an outer tube and a cylinder sleeve, and wherein atomized non-solid lubricant that flows into the cylinder sleeve of the gas cylinder assembly is used to at least part...
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WO/2022/175867A1 |
A trigger dispensing head (4) of a trigger dispensing device (1) comprises a cylinder chamber (14), a piston (80), a pressure chamber (30a), a sleeve (30) having an end wall (36), a suction duct terminating in a suction mouth (18a), a di...
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WO/2022/175866A1 |
A trigger dispensing head (4) applicable to a bottle (2) of a trigger dispensing device (1) comprises a cylinder chamber (14), a main venting passageway (26), a sleeve (30), a secondary venting passageway (50), a piston (80), a suction d...
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WO/2022/044986A1 |
Provided are a heat-shielding ring for a cylinder liner that is less likely to be damaged due to a groove for forming an insulation air layer, and an internal combustion engine that uses said heat-shielding ring. The present invention is...
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WO/2021/255890A1 |
The present invention addresses the problem of providing a spiny liner that can further improve joining strength when integrated with metal on an outer circumferential surface side. The spiny liner having a plurality of protrusions on ...
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WO/2021/245065A1 |
A piston guiding element, rock drilling machine and method for supporting a front end portion of a percussion piston of a rock drilling machine. The element (20) comprises a braking recess (16) at its rear end (24). The element further c...
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WO/2021/242565A1 |
An anti-polish ring for an internal combustion engine is provided. The anti-polish ring includes an axially extending ring portion that is configured to scrape a top portion of a piston in a cylinder liner. The anti-polish ring is config...
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WO/2021/219221A1 |
Invention relates to an antipolishing ring (22) for an internal combustion piston engine (10) comprising an axial center axis (A), a radially inner surface (24) extending in the direction of the center axis (A) configured to scrape of de...
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WO/2021/182184A1 |
A cylinder (100) comprises: a cylinder bottom (120) that has an annular wall section (122) extending from a base section (121) and closes an opening of a cylinder tube (110); a back ring (140) that is provided so as to face the inner cir...
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WO/2021/161728A1 |
This sliding mechanism is provided with: a cylinder bore having an iron-based thermally sprayed film; and a piston having a piston ring covered by a hard film containing carbon as a main component. Moreover, the thermally sprayed film...
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WO/2021/146345A1 |
A fluid cylinder for a fluid end section of a reciprocating pump is described. The fluid cylinder includes a body defining a pressure chamber in fluid communication with a plunger bore, the plunger bore comprising a packing segment confi...
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WO/2021/126943A1 |
A cylinder liner for a cylinder bore of a cylinder of an internal combustion engine. The cylinder liner includes a cylindrical casing having an outer surface and an inner surface, wherein each surface has a respective surface area. The l...
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WO/2021/089069A1 |
The invention relates to a working cylinder (1) having a cylinder tube (2), a first closure part (3), a second closure part (4) and a piston unit (5), wherein the cylinder tube (2) has a first cylinder tube end (6) and a second cylinder ...
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WO/2021/066067A1 |
This sliding structure is for an internal engine having a cylinder and a piston, wherein: the cylinder has a plurality of indentations formed in a stroke center region that covers the whole or part of an inner wall surface of the cylinde...
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WO/2020/177812A1 |
The invention relates to a device for sealing a combustion chamber of an internal combustion engine, comprising at least one piston and a cylindrical component which receives said piston, wherein the piston is movable within the componen...
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WO/2020/159744A1 |
A cylinder liner (28) for a cylinder bore (20) of an internal combustion engine (10) is provided. The cylinder liner (28) including a hollow cylindrical body (29) and a coolant cavity (46) defined between a sidewall (24) of the cylinder ...
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WO/2020/118443A1 |
Examples that relate to snubbing devices to arrest or resist motion are provided. These snubbing devices are suitable for use with actuators, such as linear actuators, that desire load damping or piston speed change at the end of stroke ...
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WO/2020/111803A1 |
One aspect of the present invention provides a length adjustment apparatus comprising: a cylinder part which is hollow inside and accommodates a filler; a length adjusting part which shares a central axis with the cylinder part and is co...
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WO/2020/046043A1 |
One aspect of the present invention provides a multi-step height adjuster comprising: a base tube part having a first base tube, and a second base tube capable of vertically reciprocating in the first base tube; a spindle part having a f...
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WO/2020/022032A1 |
The present invention addresses the problem of reducing friction and imparting excellent seizure resistance. Provided is an internal combustion engine comprising: a cast iron cylinder liner having an inner circumferential sliding surface...
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WO/2019/224861A1 |
The present invention addresses the problem of providing a cylinder liner having a coating film in which cracking does not occur even when the cylinder liner is exposed to a harsh heat cycle having a large temperature difference. The pro...
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WO/2019/200642A1 |
Disclosed is an air cylinder (13). A spiral groove (1321) is disposed on an outer surface of a cylinder body of the air cylinder (13); a thickness of the bottom of the spiral groove (1321) is less than a thickness of a circumferential ed...
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WO/2019/177107A1 |
An engine 100 is provided with: a cylinder in which a cylinder liner is formed; a piston that is provided in the cylinder liner; a piston ring that is provided to the piston; a step that is formed in the inner peripheral surface of the c...
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WO/2019/150618A1 |
This actuator (A) is provided with an aluminum alloy cylinder (1), a bottom part (2) which closes one end of the cylinder (1), a cylindrical inner rod (3) which is inserted into the cylinder (1) and which together with the cylinder (1) f...
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WO/2019/118196A1 |
Unique apparatuses and methods for scraping deposits from a piston as the piston moves in an upstroke direction and a downstroke direction. An engine assembly includes a cylinder having a cylinder bore, a piston having a crown end, where...
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WO/2019/093274A1 |
According to the present invention, a cylinder tube (100) is provided with: a main body part (10) which has a through hole (11) that opens to end faces; and a cover part (20) which closes an opening of the through hole (11) of the main b...
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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 ...
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WO/2019/035906A1 |
A modular electrohydraulic actuator including an electric motor, a hydraulic pump driven by the electric motor, and a hydraulic actuator in fluid communication with the hydraulic pump. The hydraulic actuator includes a hydraulic cylinder...
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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...
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WO/2018/222513A1 |
A method (700) for remanufacturing an engine block (104) is provided. The engine block (104) includes a damaged area (314) on an inner surface (302) of a cylinder (202). The method (700) includes removing a first liner (204) from the cyl...
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WO/2018/183265A1 |
Internal combustion engines having non-circular, preferably rectangular, cross-section pistons and cylinders are disclosed. The pistons may include a skirt with a field of pockets that provide a ringless, non-lubricated, seal equivalent....
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WO/2018/178620A1 |
A cylinder for receiving a reciprocating piston, the cylinder defining a bore portion having first and second ends between which the piston travels in an axial direction, wherein the bore portion comprises a plurality of axially spaced a...
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WO/2018/141762A1 |
The invention relates to a cylinder-piston device, comprising a cylinder (1), on the inside of which a seal is provided in the form of a liner, and at least one piston (2), at the radially outer side of which at least two outer sections ...
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WO/2018/113810A1 |
The invention relates to a screw-threaded working cylinder comprising a tubular cylinder (1), a closure (2) and a piston unit (3), wherein the tubular cylinder (1) has an end region (4), the end region (4) of the tubular cylinder (1) has...
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WO/2018/110390A1 |
A wear measurement system, a wear measurement method and a combustion chamber component are provided which make it easy to measure the amount of wear of a target. This wear measurement system, for measuring wear of a target in a combusti...
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WO/2018/040349A1 |
A cylinder support (100) for a reciprocating compressor and a compressor having the same. The cylinder support (100) is generally formed in a cylindrical shape. The cylinder support (100) has a through hole (1) penetrating therethrough a...
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WO/2018/042654A1 |
A cylindrical member made from lamellar graphite cast iron, which has excellent mechanical strength and processability suitable for practical use and also having excellent abrasion resistance and seizure resistance. A cylindrical member ...
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WO/2018/034871A1 |
Technology is provided for a cylinder with a carbon scraper for use in an opposed piston engine. The cylinder includes a cylinder body having first and second piston bores extending along a central axis for reciprocation of corresponding...
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WO/2018/029436A1 |
A method of manufacturing a tubular component comprising rough machining the exterior surface of a solid billet (1) to reduce the size thereof and form at least a first radially extending flange (3) and a second radially extending flange...
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WO/2018/018149A1 |
A piston for a cylinder, and a method of fabrication thereof, the piston rod comprising a substrate and a coating, the substrate having a surface roughness profile comprising peaks and valleys with a peak-to-valley height in a range betw...
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WO/2017/207633A1 |
The subject matter of the invention is a cylinder (100) for a reciprocating piston system (300), with a cylinder running surface (10), which is finished by machining by means of a tool with a geometrically defined cutting edge (11), wher...
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WO/2017/209135A1 |
In relation to a sliding structure for an internal combustion engine according to the invention, a cylinder is formed to have a plurality of recesses in a stroke center region, a piston ring is formed to have an inclined surface formed a...
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