Matches 1 - 50 out of 61 1 2 >
Match Document Document Title
7267344 Piston ring with a PVD coating  
A piston ring for an internal combustion engine is made of steel and has an outer contact surface that is nitrated and coated to no more than 70 μm with a protective coating comprising nitrides of...
7073611 Ion-beam assisted deposition of inorganic coatings for elastomeric seal wear resistance improvement  
Elastomeric seals for use in drill bits on which an inorganic surface modification material has been deposited onto the surface of the elastomeric seals. Wear resistance of the seal at the dynamic...
6726216 Piston ring with oxide-nitride composite layer  
A piston ring for use in a cylinder of an internal combustion engine, which ring is nitride-hardened at least on the sliding surface between piston ring and cylinder wall. The nitride layer is...
6703145 Process for electrolytic coating of a substrate and product produced  
The present invention relates to a process for electrolytic coating of a substratum, especially a piston ring, with a ceramic chrome layer, the substratum being arranged at an electrode connected...
6631907 Nitride-plated piston ring for internal combustion engines  
According to an embodiment of the present invention a piston ring for internal combustion engines for use with a piston and a cylinder, is provided that has an external circumferential sliding...
6494461 Sliding member  
An improved sliding member is provided that has a sliding surface and a deposition layer formed on the sliding surface utilizing an ion-plating method, wherein the deposition layer is composed...
6485027 Surface heat treatment of piston rings  
A piston ring for use in a piston of an internal combustion engine comprises a base material of a first hardness formed into a ring, and a secondary material of a second hardness formed by...
6325385 Piston ring  
A piston ring has a diamond-like carbon film formed in a thickness of 0.5 to 30 micrometers over an under film on the upper and lower surfaces. The under film is directly formed on the surfaces, or...
6270081 Combination of piston ring for use in internal combustion engine  
A piston ring combination including at least one compression ring and at least one oil ring. If a plurality of compression rings are provided, an outer peripheral surface of at least a top ring is...
6213474 Piston ring and combination of compression rings  
According to an aspect of the present invention, a piston ring for use in internal combustion engines is provided that is made of matensite-based stainless steel material containing C of not less...
6161837 Piston ring with hybrid face coating  
An improved piston ring is disclosed, together with a process form making the ring. An annular steel base body has a lower layer formed by electro-plating a peripheral surface of the body with...
6149162 Sliding member  
A gas nitrided layer is formed over the entire surface of a piston ring. A physical vapor deposition film of CrN is formed over the gas nitrided layer at the outer circumferential surface. The...
6060182 Hard coating material, sliding member covered with hard coating material and manufacturing method thereof  
A hard film is covered on the outer circumferential surface of a piston ring by means of an arc ion plating. The hard film has a mixture of crystal structure of CrN and crystal structure of Mo 2 N...
6054225 Composite chromium plating film and sliding member covered thereof  
A piston ring is formed with a nitrided layer over all surfaces and formed with a composite chromium plating film over the nitrided layer in the outer circumferential surface. The composite...
5820131 Piston ring having wear coating consisting of Cr.sub.2 N or a mixture of Cr.sub.2 N and Cr  
A Cr 2 N film or a mixed Cr 2 N and Cr film formed by physical vapor deposition on the outer circumferential surface of a piston ring which is in contact with the inner circumferential surface of...
5718437 Combined oil ring with spacer/expander having Cr.sub.2 N coating thereon  
A combined oil ring is comprised of paired upper and lower side rails, and a spacer expander. The side rails are made of martensitic stainless steel and are subjected to gas nitriding. The spacer...
5601293 Sliding member with hard ternery film  
A hard film is formed on the outer circumferential surface of a piston ring by means of a physical vapor deposition process. The hard film is a ternary film comprising molybdenum, chromium, and 4...
5582414 Sliding member and method for manufacturing the same  
An under coating 2 and a hard film 3 are formed on the outer circumferential surface of a piston ring 1 by an ion plating process. The under coating 2 is composed of at least one of Cr, Cr 2 N,...
5039116 Composite oil-ring  
A composite oil-ring comprising an oil control ring disposed on a lower surface of an oil-ring groove, a seal ring disposed on the oil control ring and having substantially no oil path in the...
4941669 Fiber-reinforced piston ring for internal combustion engine  
A fiber-reinforced piston ring for an internal combustion engine comprised of composite body of reinforcing fiber which is long carbon fibers oriented in a peripheral direction of the piston ring...
4876158 Piston ring having a wear resistant surface layer  
There is disclosed a wear resistant surface layer composed of 40 to 70 wt. % cobalt or cobalt base alloy as binder and the balance is substantially chromium oxide particles.
4817578 Internal combustion engine  
An internal combustion engine having a cylinder block made of a light-alloy with a cylinder wall around a cylinder bore including a cylindrical fiber-reinforced portion which is formed of a mixture...
4612260 Piston ring member  
A piston ring having an improved wear resistance and antiseizure properties and good workability is disclosed. The piston ring is made of a martensite stainless steel comprising from 0.4 to 0.7 wt...
4548416 Oil-ring including two rail rings and an expander-spacer ring which bites into the rail ring  
A composite oil-ring comprises a pair of rail rings and an expander-spacer ring. The expander-spacer ring is laterally extending U-shaped in cross section providing rail supporting legs and an...
4420543 Bearing member of an internal combustion engine, having a flame sprayed surface  
In a bearing member of an internal combustion engine, having a flame sprayed surface, molybdenum or tungsten carbide is known as the material of the flame spray. The present invention aims to...
4359230 Piston ring with wear resistant coating  
A piston ring for use in a reciprocating internal combustion engine or in a compressor. The ring has an outer peripheral surface provided with a rotary finish machined curved center portion, rotary...
4344634 Compression rings  
A compression ring composed of stainless steel comprising from 0.6 to 0.7% by weight C, from 0.15 to 0.40% by weight Si, from 0.6 to 0.8% by weight Mn, from 12.0 to 14.0% by weight Cr, and the...
4323257 Piston ring with a Cr-C-Fe inlaid ring in its outer surface, and a method of making it  
A piston ring preform is formed with a groove dividing its cylindrical outer surface, and this groove is filled up by plasma-spraying with a deposit of alloy whose surface is flush with the...
4307890 Piston ring with chrome-filled groove  
A piston ring having an annular groove in its outer periphery forming axially-spaced outer shoulders at each side of the ring, such groove including a bottom land and a pair of axially-spaced,...
4233072 Sliding member having wear- and scuff-resistant coating on its surface  
A sliding member having a coating especially suitable for a piston ring or a cylinder liner in which excellent wear- and scuff-resistance, as well as excellent initial wear-in property are...
4214762 Rolled metal piston ring  
A rolled steel oil control piston ring for internal combustion engines is of generally U-shaped cross section with a pair of opposed rigid sidewalls projecting inwardly of the ring from a central...
4161321 Piston ring and method of manufacture  
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...
RE29899 Chrome insert ring  
A chrome insert ring including ring elements each having its outer peripheral surface formed with an annular groove. The chrome insert ring has a groove made with two symmetrical side walls having...
4106782 Ceramic coated piston rings  
Disclosed herein is a piston ring for an internal combustion ring having its face plasma sprayed with a ceramic coating comprised of 40% by weight titanium dioxide and 60% by weight aluminum oxide....
4079949 Integral spring piston ring  
A one-piece annular oil control piston ring for internal combustion engines is adapted to be received with a peripheral groove in a piston. The ring is of generally U-shaped cross section defined...
3944236 Piston ring  
A piston ring whose piston ring sliding surface is provided with a channel having chrome plating layer, with grooves continuously or discontinuously provided on the borders of the chrome layer and...
3938814 Bearing member having a wear resistant coating on its bearing face  
A bearing member such as a piston ring for internal combustion engines having a wear resistant alloy coating applied to its wear surface by plasma spraying an aggregate mixture of particles...
3806139 PISTON RING  
A gapped aluminum alloy piston ring for an internal combustion engine whose outer axial face is chromium plated while the axially spaced radial faces are hard anodized. The chromium plate is...
3770286 PISTON RING  
Disclosed herein is a piston ring having an improved bearing surface and method of making the same wherein a first layer of hard chromium is electrodeposited on the bearing surface of a piston ring...
3729790 A ONE-PIECE CHANNEL SHAPED PISTON RING  
A piston ring has an electrolytic Cr plating applied to the surface of the channel shaped steel article prior to slitting by the grinder to form a plurality of lateral slits.
3690686 PISTON WITH SEAL HAVING HIGH STRENGTH MOLYBDENUM ALLOY FACING  
Piston rings, including compression and oil control rings, for internal combustion engine pistons, having a bearing face of an alloy formed in situ on the ring from a plasma jet stream. The alloy...
3677558 OIL STRIPPING PISTON RING  
An oil stripping piston employed on an internal combustion engine, especially aimed at elevated contact pressure and drastic reduction of lubrication oil consumption, on which a hardened surface is...
3671047 PISTON RING AND PROCESS OF MAKING THE SAME  
A cast iron piston ring is provided with a friction reducing packing of bonded iron oxide nd carbon powder in a groove of its outer circumferential face, and with a hard chromium electrodeposit on...
3650537 OIL RING OF ONE PIECE TYPE  
An oil ring of the one piece type has a chrome plated outer edge periphery, its upper and lower sides are inclined radially outwardly, and an expander is attached to the back thereof having...
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.
3573874 SEALING RINGS  
This specification discloses a sealing ring particularly a piston ring for an internal combustion engine, comprising a base ring, the outer periphery of which includes a generally plane cylindrical...
3542376 PISTON AND RING CONSTRUCTION  
3539192 PLASMA-COATED PISTON RINGS  
3467397 OIL SCRAPING RING COMBINED WITH COILED EXPANDER  
3430968 PISTON RING ASSEMBLY  
Matches 1 - 50 out of 61 1 2 >