| Patents for F16J 9 - Piston-rings, seats therefor; Ring sealings of similar construction in general (4,592) |
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| 03/28/2001 | CN2425204Y Totally enclosed piston ring |
| 03/27/2001 | US6206379 Second pressure ring for Al cylinders and its producing method |
| 03/27/2001 | US6205908 Piston equipped with piston ring |
| 03/21/2001 | EP1085242A2 Piston ring |
| 03/21/2001 | EP1084326A1 Rotating sleeve engine |
| 03/15/2001 | WO2001018434A1 Piston ring for a reciprocating piston machine |
| 03/15/2001 | WO2001018433A1 Piston ring for a reciprocating internal combustion engine |
| 03/15/2001 | DE19942242A1 Hubkolbenmaschine Reciprocating engine |
| 03/15/2001 | DE19942241A1 Hubkolbenmaschine Reciprocating engine |
| 03/14/2001 | EP1082534A1 Piston-cylinder arrangement |
| 03/13/2001 | US6199868 Piston assembly with piston ring support and sealing member |
| 03/13/2001 | US6199274 Method of making oil scraper piston rings |
| 03/07/2001 | CN1286351A Non-gap piston ring of helical spring |
| 02/27/2001 | US6193236 Packing seal having at least two axially adjacent segment rings |
| 02/20/2001 | US6189893 Piston ring |
| 02/14/2001 | CN2419422Y Leakageless piston ring for vertical reciprocal vacuum pump |
| 02/14/2001 | CN2419421Y Piston with dual composite positioning constant tight rings |
| 02/07/2001 | CN2418304Y Sealing plate for fuel-tank lid |
| 01/31/2001 | EP1072381A1 Mechanical part with a plastic overmoulded seal and method for manufacturing such a mechanical part |
| 01/25/2001 | DE19944453C1 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 |
| 01/25/2001 | DE19925278A1 Oil stripper piston ring for IC engines has oil passages formed by combination of round bores and along bores at defined relative distances |
| 01/23/2001 | US6176492 Piston ring for shock absorber |
| 01/23/2001 | US6176115 Fractured seal ring |
| 01/10/2001 | EP0905362A4 Cylinder-piston assembly |
| 01/10/2001 | CN2414257Y Piston H-shape oil sealing device |
| 01/10/2001 | CN1060557C Sealed piston ring |
| 01/04/2001 | WO2001000979A2 Low emission piston and ring for internal combustion engine |
| 12/27/2000 | EP1063454A2 Self-lubricating piston ring material for internal combustion engine and piston ring |
| 12/27/2000 | CN2412098Y Two-side oil scraping anti-rotation complementary piston ring |
| 12/19/2000 | US6161837 Piston ring with hybrid face coating |
| 12/19/2000 | US6161468 Four-piece oil seal |
| 12/14/2000 | WO2000075501A1 Piston and piston ring assembly |
| 12/13/2000 | CN2410483Y Combined sealing device of telescopic sleeve hydraulic oil cylinder |
| 12/13/2000 | CN2410482Y Cylinder body drive shaft sealing device |
| 12/06/2000 | CN2409098Y Piston repairing ring |
| 12/05/2000 | US6154958 Method of making piston rings |
| 11/29/2000 | CN2408307Y Tongue piece sealing combined piston |
| 11/22/2000 | CN2407182Y V-type seal ring with convex tendon |
| 11/22/2000 | CN1274054A Sealing technique without leakage for piston ring |
| 11/21/2000 | US6149162 Sliding member |
| 11/16/2000 | DE19900386C1 Hubkolbenmaschine Reciprocating engine |
| 11/15/2000 | EP1052435A2 Piston ring carrier with cooling cavity and method of manufacturing the same |
| 11/09/2000 | WO2000066797A1 Metal matrix composite especially intended for piston rings |
| 11/07/2000 | US6142481 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 |
| 11/02/2000 | WO2000065104A1 Method for hardening ring-shaped grooves by means of laser beams |
| 11/02/2000 | DE19918808A1 Verfahren zum Härten von Ringnuten mit Laserstrahlen A method for hardening the annular grooves with laser beams |
| 11/01/2000 | CN2403947Y Piston ring |
| 11/01/2000 | CN2403946Y Full sealing booster piston ring |
| 10/31/2000 | US6139022 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 |
| 10/26/2000 | DE10016158A1 Piston ring groove for oil sealing ring with coil expander of engine piston |
| 10/24/2000 | US6135008 Piston with lubricant-scraping ring and lubricant return ports |
| 10/18/2000 | CN1270287A Endless combined piston ring |
| 10/17/2000 | US6131503 Piston ring assembly |
| 10/12/2000 | WO2000060217A1 Rotating sleeve engine |
| 09/27/2000 | EP1038128A1 An improved piston ring |
| 09/20/2000 | CN2397312Y Composite sealing ring |
| 09/19/2000 | US6119647 Piston with blow-by pressure relief |
| 09/12/2000 | US6116204 Oil scraper piston ring |
| 09/08/2000 | WO2000052364A1 Piston with at least one ring groove and at least one piston ring |
| 09/06/2000 | CN2395089Y Stepped overlapping piston ring |
| 09/05/2000 | US6113107 Self-lubricated and-adjusted piston ring |
| 08/31/2000 | DE19908542A1 Kolben mit zumindest einer Ringnut und zumindest einem Kolbenring Flask equipped with at least one annular groove and at least one piston ring |
| 08/30/2000 | EP0912846A4 Seals for hydraulic assemblies |
| 08/30/2000 | CN2394058Y Piston ring |
| 08/24/2000 | DE19939002C1 Nose minute ring for internal combustion engine, circumferential surface of which has spherical outline in at least part region |
| 08/23/2000 | EP1029184A1 Improved accumulator piston |
| 08/16/2000 | CN2392037Y Rubber sealing ring with built-in steel wire frame specially for plastic tube |
| 08/16/2000 | CN2392036Y Multiple section spring combination, and self adjusting clearance type piston-ring |
| 08/16/2000 | CN1055489C Filling-type fluorine plastic composite sealing pad |
| 08/10/2000 | DE19903425A1 Klimaanlage für ein Kraftfahrzeug Air conditioning system for a motor vehicle |
| 08/03/2000 | WO2000045052A1 Air conditioning system for an automobile |
| 08/02/2000 | CN2390014Y Piston ring closing device for four-stroke gasoline and diesel engines |
| 07/27/2000 | DE19901284C1 Ölabstreifkolbenring sowie Verfahren zum Einbau eines Ölabstreifkolbenringes Piston oil control ring and method of installing a piston oil control ring |
| 07/20/2000 | DE19900385A1 Hubkolbenmaschine Reciprocating engine |
| 07/19/2000 | EP1020667A2 Method of installing an oil-scraping ring |
| 07/19/2000 | CN2388419Y Piston-ring |
| 07/19/2000 | CN2388418Y Enclosed combined sealing washer |
| 07/19/2000 | CN2388362Y Double-torsional anti-rotating complementary piston ring |
| 07/18/2000 | CA2007930C Anti-wedging pressure seal ring apparatus |
| 07/13/2000 | WO2000040850A1 Reciprocating piston engine |
| 07/13/2000 | WO2000040849A1 Reciprocating piston engine |
| 07/11/2000 | US6086805 Method for making a seal ring |
| 07/06/2000 | WO2000039445A1 Piston |
| 07/05/2000 | CN2386261Y Flexible metal sealing washer |
| 07/04/2000 | US6082319 Piston for internal-combustion engine and method for manufacture thereof |
| 06/28/2000 | CN2385153Y Blowing-proof piston ring |
| 06/28/2000 | CN2385152Y Wear-proof sealing movable ring |
| 06/22/2000 | WO2000036320A1 Piston ring for the piston of an internal combustion engine |
| 06/21/2000 | CN2384041Y Movable sealed internal oil scraper ring of aluminium alloy inserted composite material |
| 06/15/2000 | WO2000034682A1 A piston or plunger and a method for making the same |
| 06/15/2000 | DE19857637A1 Kolbenring für einen Kolben für Verbrennungsmotoren Piston ring for a piston for internal combustion engines |
| 06/14/2000 | CN2382901Y Seal device of rubber O shape seal ring without compressing content |
| 06/14/2000 | CN1256399A Method and device for determining state of pair in cylinder of internal combustion engine |
| 06/08/2000 | DE19953311A1 Piston ring, especially the first piston ring in an aluminum alloy cylinder of an internal combustion engine, is made of an austenitic stainless steel with a thermal expansion coefficient matching that of the aluminum alloy |
| 06/07/2000 | EP1006271A2 Method and device for the determination of the status of a moving part in the cylinder of an internal-combustion engine |
| 06/06/2000 | US6070562 Engine block for a multi-cylinder internal combustion engine |
| 05/31/2000 | CN2380747Y Double-tortion self-positioning complementary piston ring |
| 05/24/2000 | CN1254404A Fractured seal ring |
| 05/23/2000 | US6065438 Continuous piston rings for an internal combustion engine |
| 05/17/2000 | EP1001156A1 An oil sealing ring |