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WO/2002/020971A1 |
An engine piston (10) comprising a crown (12) and a tubular body portion (30) containing gudgeon pin bosses (46) and force transmitting regions (66) has the body portion forged, preferably of steel, as two or more circumferentially incom...
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WO/2002/018770A1 |
A piston crown retainer spring, serving to fix a piston crown to a piston base body, is characterised in having at least one fixing section for the piston crown and at least two fixing sections for the piston base body. A spring effect i...
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WO/2002/018786A1 |
The aim of the invention is to create a reliable piston-pin fixing element, which can be released without the need for a special tool and which uses components that can be simply manufactured. To achieve this, the piston (13) is mounted ...
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WO/2002/018788A1 |
The invention relates to a piston compressor, especially for rail vehicles, consisting essentially of a drive unit (2) producing a rotational movement (2), and a downstream compressor unit (1). Said compressor unit consists essentially o...
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WO/2002/014653A1 |
A hydraulic power assist steering system for a vehicle having steerable wheels comprises a housing (14) and a rack (16). The system also comprises a fluid motor (20) for moving the rack (16). The fluid motor (20) includes a piston (10) f...
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WO/2002/012701A1 |
The invention relates to a piston comprising a shaft or supporting ring which rests directly on the hubs. The aim of the invention is to fix the latter on the hubs as simply as possible. To this end, the supporting ring is fixed on the h...
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WO/2002/010571A1 |
An engine piston (10) (Fig. 1(a)) is manufactured by assembling an outer shell (12), comprising a crown (16) and tubular side wall (20) in which a ring groove region (40) and skirt are defined, with a plate-like mounting member (14) and ...
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WO/2002/006707A1 |
The invention relates to a device for fixing a piston (1), or a piston rod attachment, to a piston rod (5), one of the piston (1) and the piston rod (5) having a hole (2) running in its axial direction, and the other of these having a po...
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WO/2002/002944A1 |
The invention relates to a piston for a compressor for use in hermetically sealed small refrigeration machines. A sealing and guiding surface section (1a, 2), configured as a cylinder jacket, in addition to at least two sealing and guidi...
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WO/2002/001059A1 |
A piston for use in an internal combustion engine is manufactured by forming a blank (10, 50, 70) from a first material, providing a region (20, 60, 80) of a second material in a surface portion (12, 52, 54) of the blank (10, 50, 70), th...
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WO/2001/086133A1 |
The invention relates to a built-up piston, comprising central screwing and a central cooling chamber. The aim of the invention is to reduce the flow resistance in the oil delivery area. To this end, means for transferring oil from the p...
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WO/2001/080999A1 |
The invention concerns a device (1) for actuating at least a piston (2) longitudinally mobile in the bore (3) of a body (4), the piston (2) being mobile under the action of a longitudinal or curved movement (F2) of a control arm (5). The...
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WO/2001/077547A1 |
The invention is embodied by drawing and comprises an outer cylindrical wall (1) provided with a slot (2). An inner space of a piston is formed with the aid of a cylindrical surface (3) which is adjacent to an end (4) and covering the sl...
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WO/2001/075284A1 |
A piston (11) incorporates spring means acting, in use, between the piston and an associated connecting rod so as to bias the connecting rod away from the crown (112) of the piston. The spring means (117) is integrally formed with the pi...
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WO/2001/069063A1 |
The invention relates to a piston engine comprising a case (25) containing at least two cylinders (3, 4; 5, 6) with inlet openings and outlet openings, which can be opened and closed by means of controllable valves. Each piston (7, 8, 9,...
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WO/2001/061057A1 |
A bar product prepared from microalloyed bar steel is provided. The bar product is prepared by hot rolling and heat treating a microalloyed bar steel. The hot rolled and heat treated microalloyed bar steel is prepared by steps of hot rol...
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WO2000045069A9 |
A piston and connecting rod assembly comprises an articulated piston (1, 2) within which the small end (6) of a connecting rod (7) is loosely retained by a gudgeon pin (4). During the compression and combustion/expansion stroke, a concav...
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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...
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WO/2001/053726A1 |
The invention relates to moving parts of hydrostatic, preferably hydraulic drives and solves the problem of substituting the sliding of a piston (1) on an internal surface (10) of a cylindrical space (9) by rolling thereof on said surfac...
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WO/2001/051832A1 |
A piston-retaining mechanism (20) for removable engagement with a piston head (12) to secure a piston pin (30) therein include a base coil portion (22) and a subsequent coil portion (24); with each coil portion approaching the other at a...
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WO/2001/045881A1 |
A plunger tip (1) for attachment to the forward end of a plunger rod (3) for forcing molten metal from the shot sleeve (5) into the die-casting apparatus. The plunger rod has a threaded socket (13) extending axially inward form its forwa...
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WO/2001/044645A1 |
The aim of the invention is to provide an easy fastening of a tubular supply or a vertical pipe in a bottom covering of a cooling chamber for pistons of internal combustion engines, e.g. in a circular covering of a cooling channel of an ...
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WO/2001/038735A1 |
The invention relates to a piston vacuum pump, in which the joint, between the piston (10) and the connecting rod (11), which controls said piston, contains an elastic device (EV). In this manner pulsation and vibration, from the connect...
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WO/2001/038760A1 |
The invention aims to increase in a simple manner the oil retention capability of bearings in a piston-piston pin-connecting rod assembly for internal combustion engines. To this end, the hub bore or the small or large end of the connect...
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WO/2001/032285A1 |
A toy building set comprising at least one toy building element (9) with a body part (10) provided with coupling means for interconnecting with other toy building elements (9), and a vehicle (1) with a body (2) that is provided with coup...
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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...
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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...
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WO/2001/033114A1 |
Connecting rod (3, 30) and piston pin (4) assemblies and methods for the manufacture thereof are described. The connecting rod may be joined to a piston pin by welding (8,11) with the piston pin in situ in the piston (5). Suitable techni...
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WO/2001/018432A1 |
The invention relates to a cast piston, especially an injection-moulded piston (1) consisting of fibre-reinforced plastic, which is slidingly located in a receiving bore (2) of a housing (4) and is configured in the form of a cupular bod...
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WO/2001/015816A1 |
The invention concerns a reservoir capable of being periodically cleaned and/or filled with a coating product equipped with a piston (10) controlled in its movement by a control rod (11). A module (32) elastically deformable in compressi...
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WO/2001/009502A2 |
Disclosed is a piston (1) having a cylindrical body made from a thermosetting molding compound. The body has a central well (3) and a molded-on metal cap (2) having sides that extend downward over the exterior of the body and into the we...
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WO/2001/002759A1 |
An articulated piston and connecting rod assembly comprising a piston, the lower surface of the crown (82) of which is provided with a concave load bearing area (86), a connecting rod, having a part spherical small end (81) providing upp...
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WO/2001/002745A1 |
The invention relates to a piston (1) for a hydraulic pressure chamber, especially the piston bore of a partially lined disk brake, whereby the piston (1) is configured as a pot-shaped hollow cylinder which is open on one side and is pro...
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WO/2001/002713A1 |
The invention relates to a liquid-cooled piston (10) for internal combustion engines having a cooling duct (16) that has an annular shape or consists of several annular segments, said duct having a substantially constant cross section al...
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WO/2000/077377A2 |
The invention relates to a cooled piston (1) for internal combustion engines. The inventive piston is provided with an annular cooling channel (3) on the periphery of the piston head. Said cooling channel, at its end that is open towards...
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WO/2000/077379A1 |
The invention relates to a piston for internal combustion engines whose piston head (1) presents an annular cooling channel (2) which on its end open towards the piston shaft is closed off by an appropriately shaped wall element (3) whic...
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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...
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WO/2000/075525A1 |
The invention relates to a piston (21) for a hydraulic control device (10) for a clutch, especially the clutch of an automobile, comprising a tubular, especially aluminium based, metal sleeve (42), characterized in that said sleeve(42) c...
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WO/2000/072116A2 |
The invention relates to a casting method for producing a box piston (1) which comprises recesses (7) between the hub support and the ring band. The invention aims to further reduce the weight of the piston. The casting cores (6) which p...
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WO/2000/066918A1 |
The invention aims to improve the seizure resistance of a piston engine with a light-alloy cylinder (2) having a chrome-plated friction surface (4). To this end the friction surface of the piston (1) is provided with a coating (3) on the...
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WO/2000/066299A1 |
The invention relates to methods that allow the production of especially pistons (10) for brakes by expanding metal foam. The inventive processes allow the production of pistons that are characterized by very small wall thicknesses and h...
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WO/2000/063594A1 |
A piston assembly is configured for high compressive loading, or arduous duty cycle, such as in a two-stroke, compression-ignition (diesel), internal combustion engine, and incorporates a (part-) spherical or (part-) cylindrical bearing ...
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WO/2000/063538A1 |
In a piston and connecting rod assembly, for an internal combustion engine, with a (part-)spherical, connecting rod small-end (64), entrained in a hollow piston body, by a retention ring (40), a chamber, serving as a localised reservoir ...
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WO/2000/061946A1 |
A composite piston (30) for a vibration pump comprises a core (32), activating a piston, and a piston (34) made of plastic and obtained by means of moulding on an insert formed by the core (32). The composite piston (30) thus obtained ac...
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WO/2000/061935A1 |
The piston comprises a piston top (3) which, at a distance from the longitudinal centre axis of the piston, has an abutment surface (7) extending in the circumferential direction of the piston and being clamped against an abutment surfac...
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WO/2000/053914A1 |
A piston production method produces an internal combustion engine piston. The method comprises forging a billet from an initial billet comprising an aluminum alloy that comprises silicon, intermetallic particles, and injected hardening p...
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WO/2000/053913A1 |
The invention relates to a multi-piece piston, comprising a steel upper part and a lower part which is screwed to said upper part and which contains the hubs. The aim of the invention is to improve the strength of the lower part and its ...
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WO/2000/050753A1 |
A free piston internal combustion engine includes a combustion cylinder (14) having a substantially cylindrical inside surface (38). A piston (12, 56, 72 and 74, 94) is reciprocally disposed within the combustion cylinder (14). The pisto...
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WO/2000/050758A1 |
A piston (10) for an internal combustion engine comprises a crown portion (12) and a skirt portion (14). The piston (10) also comprises a layer (22) of resilient material adhered to at least part of at least one of the lower surface (12d...
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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...
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