| Patents for F16J 9 - Piston-rings, seats therefor; Ring sealings of similar construction in general (4,592) |
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| 07/17/1979 | US4161317 Seal ring for rotary shaft |
| 06/26/1979 | CA1057327A1 Piston oil control ring |
| 06/12/1979 | CA1056139A1 Method of making a rolled metal piston ring |
| 05/30/1979 | EP0002149A1 Sealing cup for hydraulic pressure generator |
| 05/15/1979 | US4154207 Piston and ring for reducing HC emissions |
| 05/08/1979 | US4153477 Engine seals and rings, quenching |
| 05/01/1979 | CA1053721A1 Rolled metal piston ring |
| 05/01/1979 | CA1053720A1 Integral spring piston ring |
| 04/17/1979 | CA1052834A1 Composite packing |
| 04/03/1979 | CA1051936A2 Traction motor suspension bearing lubrication |
| 03/20/1979 | US4145060 Axially and radially clamping spreader ring for an oil scraping piston ring |
| 02/20/1979 | CA1049059A1 Seal for pistons and piston rods of cylinder-type actuators |
| 02/13/1979 | US4139205 Circumferentially resilient piston ring |
| 02/07/1979 | EP0000516A1 Sealing cup for hydraulic piston cylinder device |
| 02/06/1979 | USRE29899 Chrome insert ring |
| 02/06/1979 | US4138125 Piston ring with expansive force responsive to pressure |
| 02/06/1979 | US4137887 Pistons for internal combustion engines |
| 01/02/1979 | US4132420 Sealing rings for stirling engines |
| 01/02/1979 | US4132417 Pressure responsive sealing means |
| 12/19/1978 | US4130288 Piston ring |
| 12/05/1978 | US4128250 Pistons and piston rings |
| 12/05/1978 | CA1043831A1 Piston ring system |
| 11/21/1978 | US4125926 Method of making aluminum piston with reinforced piston ring groove |
| 10/31/1978 | US4123072 Piston ring assembly and method of making same |
| 10/24/1978 | US4121838 Shaft seal structure |
| 10/17/1978 | US4120622 Static oil seal assembly |
| 10/10/1978 | CA1039935A1 Piston ring forming method |
| 09/26/1978 | US4116114 Double piston brake actuator |
| 09/26/1978 | US4115959 Method for increasing the life of silicon carbide grinding wheels |
| 09/05/1978 | US4111438 Sealing ring assemblies for pistons |
| 09/05/1978 | US4111437 Oil control ring spacer-expander with improved slip latch |
| 08/29/1978 | US4109924 Stepped joint piston ring |
| 08/29/1978 | CA1037393A1 Double piston brake actuator |
| 08/29/1978 | CA1037332A1 Oil cooled piston rings |
| 08/22/1978 | US4108448 Piston ring assembly |
| 08/15/1978 | US4106977 With wear-resistant layer for pistons of internal combustion engines |
| 08/15/1978 | US4106782 Oxides of titanium and aluminum |
| 08/01/1978 | US4103594 Piston and scraper ring assembly |
| 07/11/1978 | US4099730 Piston ring construction |
| 05/30/1978 | US4092158 Iron, molybdenum or tungsten, boron |
| 05/23/1978 | US4090720 Expander spring for piston rings |
| 04/25/1978 | US4085490 Method of making a rolled metal piston ring |
| 04/11/1978 | US4083292 Piston with high top ring location |
| 03/21/1978 | US4079951 Metal piston with annular flanges having synthetic overlay and annular seal |
| 03/21/1978 | US4079949 Integral spring piston ring |
| 03/21/1978 | US4079720 Relative combination of a cylinder and a seal ring for internal combustion engines |
| 03/21/1978 | US4079661 Piston construction |
| 03/07/1978 | US4077637 Scuff and wear resistance; aluminum, titanium and iron oxides |
| 02/21/1978 | US4074616 Aluminum piston with steel reinforced piston ring grooves |
| 12/20/1977 | US4063722 Ejector piston |
| 11/22/1977 | US4059278 Piston ring spacer-expander with overlap-preventing expander joint |
| 10/11/1977 | US4053165 Oil ring design |
| 10/11/1977 | US4053164 Spacer-expander for a piston oil control ring |
| 09/27/1977 | US4050702 Segmented sealing structure |
| 09/27/1977 | US4050360 Oil damped piston |
| 08/30/1977 | US4045036 Piston oil control ring |
| 08/16/1977 | US4041924 Reciprocating internal combustion engine |
| 08/09/1977 | US4040637 Low friction balanced piston ring |
| 08/09/1977 | US4040636 Composite packing |
| 08/02/1977 | US4039399 Method of making a bearing surface |
| 06/21/1977 | US4030767 Chrome insert ring |
| 05/31/1977 | US4026197 Oil cooled piston rings |
| 04/12/1977 | US4016635 Method of manufacturing piston sealing strips of rotary piston machines |
| 02/15/1977 | US4008051 Chromium-iron-nickel alloy with copper and aluminum or their alloys |
| 01/04/1977 | US4000980 Eutectic alloys, iron, boron, carbon, phosphorous |
| 12/28/1976 | US3999894 Compressor assembly |
| 12/28/1976 | US3999767 Piston ring system |
| 11/16/1976 | US3991455 Coupled piston ring method of manufacture |
| 10/26/1976 | US3988119 Piston ring |
| 10/05/1976 | US3983615 Sliding seal member for an internal combustion engine |
| 09/21/1976 | US3981155 Plasma deposited rider rings for hot displacer |
| 09/14/1976 | US3980310 Ring manufacture, productive of face contact seal |
| 09/14/1976 | US3980004 Piston and seal assemblies |
| 08/31/1976 | US3977308 Double piston brake actuator |
| 08/24/1976 | US3975991 Hydraulic cylinder |
| 08/03/1976 | US3973098 Piston ring forming method |
| 07/27/1976 | US3971298 Piston assembly with compression and guiding rings |
| 07/27/1976 | US3971165 Ring manufacture, productive of face contact seal |
| 07/06/1976 | US3967829 Seal ring |
| 06/29/1976 | US3966368 Insulated seal for engines |
| 05/11/1976 | US3955823 Oil ring assembly |
| 05/11/1976 | US3955543 Two stroke cycle internal combustion engine |
| 04/13/1976 | US3949997 Piston ring structure |
| 03/30/1976 | US3947607 Method for reinforcing pistons |
| 03/30/1976 | US3947046 Oil seal ring for internal combustion engine |
| 03/16/1976 | US3944236 Piston ring |
| 03/09/1976 | US3942808 Piston ring assembly |
| 02/17/1976 | US3938814 Bearing member having a wear resistant coating on its bearing face |
| 02/03/1976 | US3936295 Bearing members having coated wear surfaces |
| 01/27/1976 | US3934886 Corrugated radial spacer expander for compound oil scraping rings |
| 01/13/1976 | US3932228 Metal material for sliding surfaces |
| 01/06/1976 | US3930657 Device for sealing between preferably movable parts |