Matches 1 - 50 out of 189 1 2 3 4 >
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7146724 Method of Assembling an internal combustion engine  
This invention provides a method of assembling a modular internal combustion engine. The modular engine includes a cast crankcase having an open top and a closed bottom, a mid-plate, and an...
7117594 Oil-scraper piston ring and a method for producing an oil-scraper piston ring  
A piston oil control ring with at least one tapered running rail, provided with a wear-resistant coating, characterized in that a radial elevation with predetermined radial height and width, which...
7003878 Method for producing a ring support with a sheet metal cooling channel welded thereon  
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...
6901782 Method and apparatus for forming a modified a cross-section wire material  
A modified cross-section wire material is formed into piston rings such as oil-control rings for use in an engine. An apparatus of the present invention for forming the modified cross-section wire...
6598406 Wave spring loaded split seal system  
A piston includes a circumferential groove having a seal ring and spring mounted within the groove. The spring exerts an axial force on the seal ring thereby preventing motion of the seal ring...
6408631 Wave spring loaded split seal system  
A piston includes a circumferential groove having a seal ring and spring mounted within the groove. The spring exerts an axial force on the seal ring thereby preventing motion of the seal ring...
6283478 Piston ring structural body and method of mounting the piston ring structural body  
The present invention provides a piston ring structural body composed of an outer ring continuously formed of a resinous material, an inner ring continuously formed of a resinous material and a...
6257590 Sealing structure and method of mounting piston ring structural body for use in the sealing stucture  
The present invention provides a sealing structure employing a piston ring structural body of a type wherein an outer ring continuously formed of a resinous material is pressed radially outwards by...
6134763 Combined machining apparatus for making piston rings  
A combined machine tool for specific use in making a piston ring or the like from a workpiece is disclosed, in which on a common bed there are mounted: an outer and inner peripheral surface...
6053988 Method for making piston rings  
A method and apparatus for making a piston ring in which a metal strip having a first coefficient of expansion is coiled about a special mandrel having a second greater coefficient of expansion and...
6003227 Process for manufacturing a piston ring  
A process for manufacturing a molded piston ring for a piston in a piston-cylinder unit from a material which can be molded in a master mold. The surfaces of the piston in contact with the piston...
5852859 Method and apparatus for making piston rings  
A method and apparatus for making non-circular piston rings which will precisely sealably conform to the cylinder wall of an internal combustion engine. In accordance with the method of the...
5809643 Method for making piston rings  
A method for making non-circular piston rings which will precisely sealably conform to the cylinder wall of an internal combustion engine. In accordance with the method a metal strip of special...
5752705 Piston rings  
A piston ring being planar, having a dished section and a planform giving desired radial pressure distribution on a co-operating cylinder wall and which ring is made form a steel resistant to...
5673923 Split seal ring made of synthetic resin having crossed diverging ends  
A a seal ring is made of a synthetic resin and has opposite ends. The seal ring has been imparted with shape-retentive property so that the seal ring is crossed at portions thereof located inside...
5619795 Method for designing an oil ring  
An oil ring set has an expander between upper and bottom side rails for a piston of a reciprocal internal combustion engine. The oil ring set has dimensions determined so as to have a thickness...
5469616 Method of manufacturing a side rail of a combined oil ring  
Each side rail of a combined oil ring, which includes a spacer-expander and two side rails, has an ion nitriding treatment layer on an outer peripheral surface of the rail. The inner peripheral...
5433001 Method of producing piston ring  
A method of producing a piston ring to be incorporated in an internal combustion engine includes first nitriding surfaces of a steel base material in a high temperature range and then continuously...
5169162 Piston ring having a function which is for facilitating supply of lubricating oil into an annular groove of a piston  
For carrying out lubrication between a piston (17) and a piston ring (21) installed in an annular groove (23) of the piston, the piston ring comprises a recessed portion (15a, 15b) which is...
5113747 High pressure piston sealing system and method of its assembly  
The present invention relates to a high pressure piston sealing system. More particularly, the present invention relates to a sealing system adopted for rigorous marine applications which prevent...
5068963 Piston rings  
In the manufacture of a piston ring an intermediate ring is produced by bending a metal strip first to a smaller radius of curvature than required and then bending the metal strip again to increase...
5016524 Sealing arrangement for a piston in a compressor  
A continuous seal ring member fitted in a ring groove of a piston of a compressor. The seal ring member has a washer-like initial shape with an internal diameter smaller than an outer diameter of...
5004249 Flat gasket and process for its production  
A flat gasket, e.g. a cylinder head gasket of an internal combustion engine is described, which has through openings with metallic U-borders. The outer surface of at least one of the U-legs is...
4986168 Piston and multilayer piston ring set  
Compression piston ring for internal combustion or compressor cylinder and piston comprising double layer of segmented ring sectors having free form circumferential curvature matching the cylinder...
4937937 Method for the manufacture of piston rings  
A method for the manufacture of piston rings from a metal strip, at least includes providing rings having a predetermined non-circular profile, by the metal strip being first bent to a uniform...
4531985 Surface treatment of metal rings  
A metal ring of generally rectangular cross-section has its radially outer surface and its side surfaces treated by being stacked with its sides in contact with other rings in a chamber. Air is...
4499643 Process for manufacturing a piston ring  
A process for manufacturing a piston ring is disclosed wherein web-like first metal member which will form a base of a piston ring and web-like second metal member which will form a wear resistant...
4497102 Process for manufacturing a piston ring  
A process for manufacturing a piston ring is disclosed wherein web-like first metal member which will form a base of a piston ring and web-like second metal member which will form a wear resistant...
4465515 Piston ring for internal combustion engine  
To provide piston rings which are ductile, can be heavily thermally loaded, and are not attacked by corrosive residues occurring upon combustion of residual oil or other sulfur-containing heavy...
4336077 Method of cryogenically hardening an insert in an article  
A method of cryogenically hardening and expanding an insert in an article is disclosed. Particularly, gray iron piston ring insert (14) having an austenitic matrix is treated in a piston body (12)...
4247972 Method of manufacturing a piston ring  
A parted annular piston sealing ring and a method for manufacture thereof wherein an inwardly facing ring surface adapted to be engaged by an expander-spring for expanding the ring into sealing...
4182014 Method of making a spacer-expander spring for a piston ring assembly  
Disclosed is a piston ring including a spacer-expander spring member. In a preferred embodiment the ring is of cast iron and includes two axially spaced cylinder wall contacting lands. At least one...
4173878 Method of manufacturing tangential expanders for oil control piston rings  
According to the claimed method a round wire is first flattened and then formed into a serpentine flat spring. The segment portions of this spring are bent up in the form of thrust shoulders and...
4133927 Composite material made of rubber elastomer and polytetrafluoroethylene resin  
A composite material including a rubber elastomer substrate and a polytetrafluoroethylene resin film or sheet having a porosity of 20 to 95% by volume and being laminated on at least one portion of...
4023248 Method of assembling apex seal means in rotary piston engines  
In rotary piston engines including apex seals each comprising a main body constituting a substantial part of the seal, an end piece disposed in abutting relationship to an end of the main body...
3973098 Piston ring forming method  
A method and apparatus for forming piston rings are disclosed. A split piston ring made by conventional processes is locally heated along its inside surface for a short distance either side of the...
3862480 RING MANUFACTURE, PRODUCTIVE OF FACE CONTACT SEAL  
Methods, apparatus, and improved structure having as their common basis the sequence of collapsing a piston ring in a fixture approximating engine bore diameter, and separately lapping a major...
3850205 METHOD AND APPARATUS FOR MANUFACTURING SPLIT RETAINING RINGS AND THE LIKE  
A method and apparatus is provided for manufacturing and packaging split retaining rings quickly and economically. The rings are initially formed from work-hardened, high carbon spring steel wire...
3805352 METHOD OF MANUFACTURING SEGMENTS FOR MOTORS, COMPRESSORS AND THE LIKE, MACHINE FOR APPLYING THIS METHOD AND SEGMENTS OBTAINED BY THIS METHOD  
A metallic wire of spring steel is wound against a mandrel and cut to the desired length for the segment. The form of the mandrel is such that the track of the wire on the mandrel is an open skewed...
3778877 METHOD OF MAKING PISTON RING EXPANDER  
A helical piston ring expander for us with plastic or plastic-like piston rings is constructed by crimping a strip of metal, spirally winding the crimped strip around a cylindrical mandrel into a...
3745630 METHOD OF PREASSEMBLY AND ASSEMBLY OF A MULTIPARTITE SEAL  
A method for preassembling and assembling a multi-partite sealing bar and associated spring for the piston of a rotary piston engine provided with a housing casing and lateral disks in which the...
3701275 MACHINE FOR FORMING PISTON RING SPACER-EXPANDERS FROM STRIP STOCK  
A machine for making spacer-expanders for piston oil rings of the type described in United States Pat. No. 3,477,732. The machine comprises a punch press having a plurality of stations through...
3575433 PISTON RING FOR AN INTERNAL-COMBUSTION ENGINE AND METHOD FOR MAKING SAME  
A piston ring has a bearing surface layer first mechanically applied thereto which is subsequently alloyed thereto by electron bombardment.
3571898 METHOD FOR MARKING AND DETERMINING THE ORIENTATION OF PISTON RINGS  
A method and apparatus for determining the orientation of a split piston ring; in particular, for determining whether the ring lies right side up or upside down. A mark made at least in part of an...
3378412 Quench hardening method for ring-like articles  
3377682 Method for stretching separated piston rings  
3325883 Method of making a piston ring assembly  
3189986 Method of keying together an annular piston ring and a back-up element  
3053545 Piston rings and methods of manufacture  
3004811 Piston ring assemblies  
Matches 1 - 50 out of 189 1 2 3 4 >