| Patents for F16J 9 - Piston-rings, seats therefor; Ring sealings of similar construction in general (4,592) |
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| 04/06/1982 | US4323257 Piston ring with a Cr-C-Fe inlaid ring in its outer surface, and a method of making it |
| 03/02/1982 | US4317574 Expander for piston ring |
| 02/23/1982 | CA1118650A1 Low-friction piston |
| 02/10/1982 | EP0045352A2 Piston rings for combustion engines |
| 02/02/1982 | US4313368 Reciprocating piston |
| 01/26/1982 | CA1117158A1 Piston ring and method of manufacture |
| 01/20/1982 | EP0043918A1 Low friction sealing |
| 01/19/1982 | US4311525 Sliding member for use in internal combustion engine |
| 12/29/1981 | US4307890 Piston ring with chrome-filled groove |
| 12/22/1981 | US4306730 Piston ring for internal combustion engine |
| 12/01/1981 | CA1113354A1 Sintered metal articles |
| 11/24/1981 | CA1113135A1 Sealing arrangement |
| 11/10/1981 | US4299401 Piston ring and method of making same |
| 11/10/1981 | CA1112233A1 Seal for a rolling cone cutter earth boring bit |
| 11/03/1981 | US4298562 Coating and impregnating threads with an elastomer; wear resistance |
| 10/06/1981 | US4292936 Nickel, copper, iron, rings |
| 09/17/1981 | WO1981002586A1 Method of cryogenically hardening an insert in an article,and article made thereby |
| 09/15/1981 | US4289264 Uniform load piston ring |
| 09/09/1981 | EP0035127A1 Method of cryogenically hardening an insert in an article, and article made thereby |
| 08/11/1981 | US4282837 Two-cycle diesel engine with piston ring stabilizing accumulator volume |
| 07/28/1981 | US4280708 Sealing device for engine piston |
| 07/15/1981 | EP0031923A1 Ring for pistons of internal combustion engines |
| 07/07/1981 | US4276971 Vehicle suspension strut with serviceable shock absorber |
| 07/07/1981 | CA1104604A1 Circumferentially compressed piston ring assembly and method |
| 06/02/1981 | US4271239 Sintered metal articles and process for their manufacture |
| 06/02/1981 | US4270440 High pressure piston and seal |
| 05/27/1981 | EP0029289A1 Suspension strut assemblies |
| 05/19/1981 | US4268046 Multiple seal stationary sealing ring |
| 05/12/1981 | US4266787 Piston ring |
| 05/06/1981 | EP0027807A1 Joint-closures for piston ring assembly |
| 03/24/1981 | US4257315 Assembly with relatively displaceable members |
| 03/17/1981 | US4256318 Piston ring |
| 03/17/1981 | US4256067 Oblong piston rings for internal combustion engine |
| 03/10/1981 | US4255363 Column seal |
| 03/03/1981 | US4253435 Diesel engine and piston assembly therefor |
| 02/24/1981 | US4252331 Sealing arrangement |
| 02/17/1981 | US4251599 Ferrous metal body coated with an alloy formed by an iron/silicon extended molybdenum plasma spray powder |
| 02/17/1981 | US4251083 Piston ring with tongue and groove joint |
| 02/03/1981 | US4248440 Wear resistance and resistance to delamination |
| 02/03/1981 | US4247972 Method of manufacturing a piston ring |
| 01/27/1981 | CA1094409A1 Piston and ring for reducing hc emissions |
| 01/22/1981 | WO1981000117A1 Sliding material |
| 01/13/1981 | CA1093599A1 Piston ring assembly |
| 01/07/1981 | EP0020526A1 Low-friction piston |
| 01/06/1981 | US4242945 Assembly with relatively displaceable members |
| 01/06/1981 | CA1093111A1 Low friction balanced piston ring |
| 12/23/1980 | US4240644 Piston seal |
| 12/10/1980 | EP0019972A1 A piston for internal combustion engines having a floating flame damper ring |
| 12/10/1980 | EP0019971A1 A piston ring |
| 11/25/1980 | US4235447 Low friction oil control piston ring |
| 11/11/1980 | US4233490 Fusion, introducing an alloying additive into molten piston alloy |
| 11/11/1980 | US4233072 Sliding member having wear- and scuff-resistant coating on its surface |
| 11/04/1980 | CA1088971A1 Piston ring |
| 10/30/1980 | WO1980002314A1 Joint-closures for piston ring assembly |
| 10/29/1980 | EP0018027A1 Piston with ring supporting sleeve |
| 10/21/1980 | US4229013 Spring seal |
| 10/07/1980 | US4226430 Two-piece oil control ring |
| 10/07/1980 | CA1086966A1 Method for increasing the life of silicon carbide grinding wheels |
| 09/03/1980 | EP0015144A1 Piston and seal in a mud pump or the like |
| 08/26/1980 | CA1084548A1 Piston ring assembly and method of making same |
| 08/21/1980 | WO1980001710A1 Piston fluid seal mounting |
| 08/19/1980 | US4218494 Process for coating a metallic surface with a wear-resistant material |
| 07/29/1980 | US4214762 Rolled metal piston ring |
| 07/01/1980 | US4210338 Piston ring assembly |
| 06/25/1980 | EP0012364A1 Sealing for rotary piston machines |
| 06/24/1980 | US4208845 Method for grinding piston rings |
| 06/17/1980 | CA1079765A2 Low friction balanced piston ring |
| 06/10/1980 | US4206930 Circumferentially compressed piston ring assembly and method |
| 06/03/1980 | CA1078566A1 Method for manufacturing sealing rings |
| 05/27/1980 | US4204688 Oil control ring spacer-expander with improved slip latch |
| 04/22/1980 | CA1075984A1 Pistons for internal combustion engines |
| 04/17/1980 | WO1980000738A1 Low-friction piston |
| 04/15/1980 | US4198065 Piston ring for internal combustion engine |
| 04/08/1980 | US4196909 Piston and sealing head therefor |
| 04/02/1980 | EP0009210A2 Spray powder for producing wear-resistant coatings on surfaces of piston rings or linear seals |
| 04/01/1980 | US4195849 Piston fluid seal mounting |
| 03/25/1980 | US4194747 Three-piece oil control ring |
| 03/25/1980 | CA1074360A1 Resilient plastic piston ring |
| 03/11/1980 | US4192051 Method for manufacturing fully sealed piston ring |
| 03/05/1980 | EP0008519A1 Piston pump |
| 02/19/1980 | US4189161 Bi-directional ring gap seal |
| 02/06/1980 | EP0007659A1 Plunger for piston engines |
| 01/29/1980 | US4185843 Friction wear experiencing machine part having a coating on its sliding surface |
| 01/29/1980 | US4185842 Seal ring |
| 01/15/1980 | US4183544 Multi-part piston oil ring |
| 01/08/1980 | US4182014 Method of making a spacer-expander spring for a piston ring assembly |
| 12/25/1979 | CA1068741A Spacer-expander for a piston oil control ring |
| 12/25/1979 | CA1068740A Oil control ring spacer-expander with improved slip latch |
| 12/25/1979 | CA1068739A Oil control ring spacer-expander with improved slip latch |
| 12/18/1979 | US4179003 Seal for a rolling cone cutter earth boring bit |
| 12/18/1979 | US4178899 Low-friction piston |
| 12/04/1979 | US4176434 Method of making piston rings with chrome-filled grooves |
| 11/27/1979 | US4175758 Tangential expander for oil control piston rings |
| 11/15/1979 | WO1979000919A1 Tapered seal for engines or the like |
| 11/13/1979 | US4173878 Method of manufacturing tangential expanders for oil control piston rings |
| 10/02/1979 | CA1063638A1 Piston oil control ring |
| 09/19/1979 | EP0004141A1 Diesel engine and piston assembly therefor |
| 08/28/1979 | CA1061108A1 Clay guns |
| 08/21/1979 | US4165079 Fluid seal ring |
| 07/17/1979 | US4161321 Piston ring and method of manufacture |