Patents
Sitemap › F02 - Combustion engines; Hot-gas or combustion-product engine plants › F02F - Cylinders, pistons, or casings for combustion engines; Arrangements of sealings in combustion engines › F02F 5 - Piston rings, e.g. associated with piston crown
Patents for F02F 5 - Piston rings, e.g. associated with piston crown (2,184)
03/2001
03/07/2001CN1286352A Antiwear 4-assemblage kit
03/07/2001CN1286351A Non-gap piston ring of helical spring
02/2001
02/28/2001CN2421419Y Angular surface combined piston ring
02/28/2001CN2421418Y Piston ring with ladder-shaped raglan joint
02/20/2001US6189893 Piston ring
01/2001
01/25/2001DE19944453C1 Piston ring for the top groove at the piston towards the cylinder combustion zone has a structured break in the cross section to prevent twisting with improved oil scraping at the cylinder walls
01/10/2001EP0905362A4 Cylinder-piston assembly
01/03/2001CN2413035Y Combined piston ring
12/2000
12/27/2000CN2412098Y Two-side oil scraping anti-rotation complementary piston ring
12/14/2000WO2000075501A1 Piston and piston ring assembly
12/05/2000US6154958 Method of making piston rings
11/2000
11/30/2000DE10015853A1 Use of piston rings of IC engines as musical instruments, with 'Cray' computer used to calculate number, sites, and height of piston ring projections to cause ring body to act as musical resonators
11/22/2000CN2407142Y Assembled piston rings
11/22/2000CN2407141Y Piston ring
11/22/2000CN1058772C Cylinder combined piston
11/21/2000US6149162 Sliding member
11/16/2000DE10006426A1 Piston ring of internal combustion engine, has layer consisting of chromium nitride as main component and specific amount of boron, formed on sliding surface by ion plating
11/08/2000CN2405018Y Seamed and closed type piston ring
11/07/2000US6142481 A piston ring having a hard film comprises diamond-like carbon in which are dispersed one or more elements selected from the group consisting of silicon, titanium, tungsten, chromium, molybdenum, niobium and vanadium
10/2000
10/31/2000US6139022 A diamond-like carbon hard overcoatings with dispersed carbides of one or more elements selected from the group consisting of silicon, titanium, tungsten, chromium, molybdenum, niobium, and vanadium; use in internal combustion
10/25/2000CN2402813Y Multilayer spiral piston ring for IC engine
10/17/2000US6131503 Piston ring assembly
10/11/2000CN2400589Y Combined air pistin ring
10/04/2000CN2399514Y Endless gap piston ring
09/2000
09/28/2000WO2000056953A1 Process for electrolytic coating of a substrate
09/27/2000EP1038128A1 An improved piston ring
09/27/2000CN2398429Y 活塞环 Piston
09/20/2000CN2397271Y Elliptical piston ring
09/20/2000CN2397270Y High efficient energy-saving seamless piston ring
09/13/2000CN2396194Y Chrome-plating seal piston ring
09/13/2000CN2396193Y Full-closed piston ring for IC engine
09/06/2000CN2395041Y Expansive piston ring
09/05/2000US6113107 Self-lubricated and-adjusted piston ring
09/05/2000US6112802 Forming an intermetallic bond of improved strength between an aluminium alloy engine component and a reinforcing element made from austenitic cast iron by annealing the reinforcing element in a decarbonizing atmosphere before casting
08/2000
08/30/2000CN1264788A Full-sealed piston ring for reducing exhaustion pollution of car
08/23/2000CN2392921Y Full-closed combined piston ring
08/09/2000CN1262386A Abrasion compensator for piston ring
08/02/2000CN2390014Y Piston ring closing device for four-stroke gasoline and diesel engines
08/02/2000CN2390013Y Tension seamless piston ring
07/2000
07/19/2000CN2388362Y Double-torsional anti-rotating complementary piston ring
07/19/2000CN2388361Y Combined oil ring for gasoline vehicle
07/12/2000CN2387276Y I. C. engine steam ring
07/12/2000CN2387275Y Opening-free piston ring
07/05/2000EP1016780A2 Piston unit for an internal combustion engine
07/05/2000CN2386204Y 活塞环 Piston
06/2000
06/22/2000WO2000036320A1 Piston ring for the piston of an internal combustion engine
06/21/2000CN2383988Y Non-leakage piston ring
06/15/2000DE19857637A1 Kolbenring für einen Kolben für Verbrennungsmotoren Piston ring for a piston for internal combustion engines
06/14/2000CN1256740A Cylinder liner for internal combustion engine of diesel type
06/14/2000CN1256399A Method and device for determining state of pair in cylinder of internal combustion engine
06/07/2000EP1006271A2 Method and device for the determination of the status of a moving part in the cylinder of an internal-combustion engine
06/07/2000CN2381796Y Combined piston ring
06/07/2000CN2381795Y Crossed assembling piston ring
05/2000
05/31/2000CN2380706Y Leakage-less piston ring
05/31/2000CN2380705Y Crack-leakage-proof anti-back-clearance-leakage piston ring
05/31/2000CN2380704Y Crack-leakage proof and anti-back-clearance-leakage piston ring
05/31/2000CN2380703Y Efficient combined piston-ring
05/31/2000CN2380702Y Single-slot self-sealing piston gas-loop
05/23/2000US6067498 Method and apparatus for engine abnormality detection
05/17/2000EP1001156A1 An oil sealing ring
05/16/2000US6063509 Reinforcing component of which the basic material is austenitic cast iron
05/16/2000US6062125 Piston-cylinder assembly
05/09/2000US6060182 Hard coating material, sliding member covered with hard coating material and manufacturing method thereof
04/2000
04/26/2000CN2375772Y Combined sealed piston ring
04/19/2000CN2374654Y Compound metal ceramic film cylinder sleeve, piston and piston ring of I. C. engine
04/18/2000US6050235 Cylinder-piston assembly
04/12/2000CN1250505A A Piston for a two-stroke crosshead engine of the diesel type
03/2000
03/08/2000CN2367781Y Piston ring for internal combustion engine
03/02/2000DE19940065A1 Slide element, e.g. an i. c. engine piston ring, has a slide surface with an ion plated chromium nitride coating containing boron for increased abrasion and wear resistance
03/02/2000DE19940064A1 Slide element, e.g. an i. c. engine piston ring, has a slide surface with an ion plated chromium nitride coating containing boron for increased detachment resistance
03/02/2000DE19940022A1 Piston ring, especially the second pressure ring of a direct injection diesel engine, consists of a surface nitrided steel of relatively low chromium content
03/01/2000CN2366568Y Back clearance sealing type piston ring
02/2000
02/23/2000CN1245251A Seamless piston ring having tension
02/16/2000EP0979352A1 A piston for a two-stroke crosshead engine of the diesel type
02/16/2000CN1244630A Engine piston
02/02/2000EP0975905A1 Internal combustion piston engine
02/02/2000CN2361850Y Overlap joint piston ring
02/02/2000CN2361849Y Normally closed interface piston ring
01/2000
01/19/2000CN2359472Y New structure piston ring
01/12/2000CN2358232Y Double torsion complementary piston ring
01/12/2000CN2358231Y Strong sealed piston ring
01/05/2000EP0800627A4 Piston assembly with piston ring support and sealing member
12/1999
12/29/1999CN2356150Y 活塞环 Piston
12/29/1999CN2356149Y 活塞环 Piston
12/23/1999DE19927998A1 Guide element, particularly a piston ring for internal combustion engines
12/22/1999CN1239181A Slant sealed piston with merged ring
12/15/1999CN2353904Y High-level-sealing piston assembly
12/08/1999CN2352692Y Power improvement fuel saving and durable piston ring package
12/07/1999US5996545 Internal combustion engine with a horizontal cylinder
12/01/1999CN2351568Y Piston ring for motorcycle
11/1999
11/10/1999CN1234479A Fitting method of sealing structure and piston ring structural body used in said sealing structure
11/03/1999CN2346938Y Non-clearance piston ring
11/03/1999CN2346937Y Double-piston ring piston
11/02/1999US5975040 Piston unit for an internal combustion engine
11/02/1999US5974871 Tension measuring apparatus and method for piston ring
10/1999
10/26/1999US5972128 Cast iron and piston ring
10/20/1999CN2344560Y Null-type split piston ring group
10/20/1999CN2344559Y Piston oil ring groove tension spring device for gasoline and diesel engine
10/20/1999CN2344558Y Combined piston ring
10/13/1999CN2343363Y Piston for IC engine
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