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WO/2009/029926A1 |
A priming piston reciprocating pump 10 has piston guide 14 which encircles piston 16 and is provided a bearing member 22 in the inner diameter of the upper end of the guide 14. The bearing 22 is formed of 25% carbon-filled PTFE and may b...
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WO/2009/023702A2 |
A piston has a pair of diametrically opposite skirt portions each having an opening providing fluid communication between an outer surface of the skirt portions and an internal cavity. The openings provide the outer surfaces of the skirt...
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WO/2009/021089A2 |
A connecting rod for a piston assembly includes first and second guidance members for guiding a piston assembly within a cylinder during piston stroke along a first axis. The guidance members are supported by first and second support rib...
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WO/2009/014571A2 |
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WO/2009/006978A1 |
The invention relates to a piston (1) of an internal combustion engine, which has a piston crown (2) with annular grooves (3) and a shaft part (4) which is disposed on the piston crown (2), wherein the shaft part (4) has bearing shaft wa...
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WO/2009/004046A1 |
Compressor comprising a piston (2) which enables a cooling fluid to be sucked and pumped through a cylinder bore, a crankshaft which transmits the movement of the electric motor, a connecting rod (4) which converts the circular motion of...
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WO/2009/006463A2 |
A piston head has a top extending radially about a first axis and first and second pin bosses depending downwardly and defining first and second pin bores. A connecting rod includes a fork having first and second connecting bosses spaced...
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WO/2009/002014A1 |
A sealing apparatus for a square piston used for compressing and feeding a fluid is applied to equipment used for compressing or feeding the fluid on the basis of a new concept, and maintains a perfectly sealed state to thus guarantee st...
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WO/2008/150316A2 |
A high velocity actuator, which may be used as a blast simulator, is provided with an actuator cylinder tube having an opening at first and second cylinder ends, and an actuator piston rod slidably mounted within the actuator cylinder tu...
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WO/2008/131739A1 |
The present invention relates to a piston (10) for an internal combustion engine, comprising a piston head (11), a peripheral fire land (12), and a peripheral ring section (13) comprising ring grooves (14), and a piston skirt (15) compri...
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WO/2008/129391A1 |
The invention relates to a crankshaft drive, more preferably for internal combustion engines and compressors with connecting rod and piston. The connecting rod (1) is linked with the piston (2) by means of positive locking without a pist...
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WO/2008/131430A1 |
A reciprocating pump including a piston is disclosed. In some embodiments, the piston includes an annular hub, a flexible sealing element coupled to an outer surface of the hub, and a sleeve seated on the outer surface of the hub adjacen...
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WO/2008/127471A1 |
A method and apparatus for a reciprocating pump, specifically, a single acting fluid or slurry pump piston. The piston assembly includes a reserve seal that is operable and adapted to maintain a pump operation in the event of a primary p...
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WO/2008/124553A1 |
A piston assembly and wrist pin therefor provide a method for controlling rotation of the wrist pin with respective piston pin bores and connecting rod small end wrist pin bore. The wrist pin has a cylindrical body with opposite end port...
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WO2008090582B1 |
A piston (11) for reciprocating compressors is provided in its outer surface with at least a first annular slot (22) filled with hydraulic fluid. At least a second annular slot (25), also provided in its outer surface is apt to collect t...
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WO/2008/107041A1 |
The invention relates to a connecting rod (1), in which a pin bore (2) is disposed for receiving a piston pin, wherein the invention provides that an expansion above a bore axis (3), based on a piston stroke axis (10), is smaller than an...
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WO/2008/092986A1 |
Piston construction, which is intended to move backwards and forwards in a cylinder (1) and which comprises a piston (2) proper, which is attached in a fixed or movable manner to a guide (4) that lies essentially in the longitudinal dire...
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WO/2008/092294A1 |
A piston of an internal combustion engine is provided in the application, it particularly relates to a piston of an internal combustion engine made of carbon and the combination of the carbon piston and the cylinder made of various mater...
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WO/2008/089803A1 |
The invention relates to a method for producing a piston of an internal combustion engine, comprising an upper part (10, 30, 50) with at least one recess (12, 31, 51) arranged behind a ring belt (11), wherein the upper part (10, 30, 50) ...
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WO/2008/061487A1 |
The present invention relates to a piston (10) for an internal combustion engine having a piston head (11) and a piston skirt (16) with piston hubs (17) which are each connected to a hub bore (18) for receiving a piston bolt, wherein the...
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WO/2008/058241A2 |
A piston assembly includes a head with ring belt having a plurality of ring grooves, and first and second skirts, each having a top edge and a bottom edge being radially narrower than the top edge First and second pin bosses are spaced r...
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WO/2008/017195A1 |
A completely sealed piston ring without end clearance and a piston with said ring are disclosed, the perimeter of the external diameter of the piston ring is longer than that of the internal diameter of the cylinder, the dimension (T) ex...
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WO/2008/011909A1 |
A piston portion (102) for a piston assembly (100) is provided according to an embodiment of the invention. The piston portion (102) includes a substantially cylindrical head portion (103) including a mating face (105). The piston portio...
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WO/2008/002256A1 |
The invention refers to a device at a hydraulic cylinder (1) comprising control bands (15, 18) arranged on piston (2) and piston rod (3), which constitute the controls for the piston and the piston rod in the hydraulic cylinder. The cont...
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WO/2007/146921A2 |
A syringe (10) for dispensing liquid materials to a substrate. In one embodiment, the syringe includes a barrel having a first end (14), a second end (16), and an interior reservoir (18). A piston (20) is slidably disposed within the res...
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WO/2007/135534A2 |
A piston (10) for an internal combustion engine including: a piston head (11) located at an uppermost section of the piston; a land (12) located on a circumference of the piston head (11); a skirt (13) located below the land (12); and a ...
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WO/2007/132587A1 |
A method of surface hardening which comprises coating the surface of an engine part with an alloy layer having excellent wearing resistance to improve the life of the part; and a process in which a piston or the like improved in wearing ...
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WO/2007/124783A1 |
In an assembly of cylinder (l)and piston(2), wherein the piston comprises a circumferential edge (10) for engaging an inner surface (11) of the cylinder, said circumferential edge of the piston defines a three-dimensional curve. Preferab...
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WO/2007/115527A1 |
Pin bosses (1) are proposed for the piston (2) of an internal combustion engine, having in each case one pin bore (3) which has a zenith-side ovality in the region (15) of the bore centre (7), wherein the zenith-side ovality of the pin b...
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WO/2007/115525A1 |
The invention relates to a piston (1) for an internal combustion engine comprising two piston-pin bosses (10, 10') which are arranged opposite each other and two skirt elements (12, 12') which interconnect said piston-bolt bosses (10, 10...
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WO/2007/115526A1 |
The invention relates to a piston (1) for an internal combustion engine comprising an upper part (3) and a lower part (11). Said lower part (11) comprises two piston-pin bosses (13) which are joined to the upper part (3) of the piston (1...
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WO/2007/088847A1 |
A three-piece oil ring in which sealing performance is enhanced and lubricant consumption is reduced even with low tension and thin width, and occurrence of sticking is eliminated. A combination of three- piece oil ring and a piston is a...
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WO/2007/086227A1 |
A low-friction slide member having a slide surface allowing relative sliding via an oil as to a surface of opponent material, characterized in that the slide surface is provided with multiple texture groups consisting of at least two rec...
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WO/2007/082564A1 |
The invention relates to a method for producing a piston (1), for an internal combustion engine, designed as a cooling duct piston for small compression heights. The piston (1) comprises a lower part (2) and an upper part (3) which are s...
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WO/2007/079707A1 |
The invention relates to a piston /cylinder unit, comprising a cylinder housing and a piston with a piston rod which may be moved axially in the cylinder housing and which may be pivoted about an angle relative to the cylinder axis. The ...
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WO/2007/076813A1 |
The present invention relates to a piston (10) for an internal combustion engine, having at least two hub bores (18) for holding a piston pin, wherein the hub bores (18) have at least one geometric deviation from a cylindrical inner cont...
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WO/2007/076812A2 |
The invention relates to a piston (10) for an internal combustion engine, comprising a cast piston crown (11), at least one ring carrier (17) cast in the piston crown (11) and a cooling channel (18) running around the piston crown (11) a...
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WO/2007/076811A2 |
The invention relates to a piston (1) for an internal combustion engine, said piston comprising an annular cooling channel (5) provided with oil admission boreholes (17) and oil discharge boreholes (18), the oil discharge boreholes (18) ...
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WO/2007/073910A1 |
A piston for an internal combustion engine, which performs a sliding reciprocating motion in a cylinder, and a method for producing the piston. The piston has a piston head and a piston skirt having at least one bearing surface. The at l...
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WO/2007/071640A1 |
The invention relates to a piston (1), for a hydraulic brake, produced in a forming process from a metal starting material, in particular, from a flat sheet with the form of a cup, open to one side with a longitudinal axis (2), a wall (3...
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WO/2007/071234A1 |
The present invention relates to a piston/connecting rod arrangement (10) for an internal combustion engine, having a piston upper part (12), comprising hub supports (17, 117, 217, 317, 417, 517) which lie opposite one another and have h...
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WO/2007/068531A1 |
Compressor unit having a motor and a reciprocating-piston compressor which is driven via a thrust-crank drive, wherein the thrust-crank drive comprises a crank wheel and a connecting rod, which is connected to the crank wheel and a pisto...
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WO/2007/063899A1 |
Intended is to cool the back of a combustion chamber sufficiently while cooling the combustion chamber sufficiently. By achieving the intention without any drastic change in an integrally-molded piston, moreover, the piston is provided o...
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WO/2007/056044A1 |
A number of embodiments of a piston 100 may have a shape that provides enhanced piston guidance. In such embodiments, the piston shape may include an axial profile that is configured to provide certain thrust load characteristics.
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WO/2007/044006A1 |
An improved seal and stabilizing system for a piston head in a tank cylinder provides a better mechanism for discharging and wiping a cylinder when heavy liquids such as chocolate or peanut butter or being dispensed. The seal system now ...
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WO/2007/028718A1 |
Arrangement for fixing a piston (1) to a connecting rod (2), particularly for use in refrigerant compressors, wherein a piston pin (3) is provided which is inserted, in such a way as to be rotatable about its longitudinal axis, into a pi...
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WO/2007/025733A1 |
The invention relates to a piston with a piston boss (1) in which a piston-pin bore (2) is provided for accommodating a piston-pin. The piston-pin bore (2) widens in the direction of a piston inner area (4). The invention provides that t...
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WO/2007/025622A1 |
Disclosed is a piston (1) comprising a top part (2) and an adjacent shaft part (3). The top part (2) of the piston is provided with a field of rings (5) encompassing at least one annular groove (6). A circumferential radial recess (7) is...
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WO/2007/019452A2 |
A cam driven piston compressor includes one or more cams powered by a motor, the cams being adapted to rotate through 360 degrees, and one or more cam followers, each of which is in contact with one of the cams. The compressor also inclu...
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WO/2007/009562A1 |
The invention relates to a method for producing a piston pin (2) for connecting a piston of a reciprocating piston engine to a connecting rod, and to a piston pin (2) produced by said method, the piston pin (2) being formed with an outer...
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