| Patents for F16J 1 - Pistons; Trunk pistons; Plungers (5,199) |
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| 10/02/1991 | EP0449278A1 Connecting structure of piston and connecting rod |
| 09/25/1991 | EP0305521B1 Piston of internal combustion engine |
| 09/24/1991 | US5050485 Cushioning of piston sidethrust in gas lubricated engine |
| 09/24/1991 | CA1289414C Piston head and rod assembly for a gear pump dry valve |
| 09/19/1991 | DE4008242A1 Method of reducing noise of IC engine - by mounting gudgeon pin in spring-loaded sliding bearings |
| 09/18/1991 | EP0447370A1 Method and equipment for fixing a piston onto a rod |
| 09/17/1991 | US5048993 Ball joint assembly |
| 09/17/1991 | US5048398 Single, light-weight and low friction light-metal piston for internal-combustion engines |
| 09/17/1991 | CA1289022C Composite piston |
| 09/12/1991 | DE4042026A1 Hydraulic or pneumatic mechanism with seal - has hollow body with piston and chamber at one end, and seal at other |
| 08/27/1991 | US5042365 Annular preloaded seal for a sliding piston in cylindrical tank |
| 08/22/1991 | WO1991012445A1 Cold-formed piston for hydraulically operated brake |
| 08/21/1991 | CN2083218U One groove and two rings piston |
| 08/07/1991 | EP0439995A1 Piston for a four-stroke internal combustion engine |
| 08/01/1991 | DE4035755A1 Plastic piston head assembly - has cup seal held by retainer ring welded to piston flange underside |
| 07/30/1991 | US5035210 Piston assembly of internal combustion engine |
| 07/18/1991 | DE4000635A1 Piston for hydraulic servo element - incorporates flat piston disc with projection crown on either side |
| 07/16/1991 | US5032244 Anodizing, protective heat resistant coating |
| 07/09/1991 | US5030148 Piston rod connecting structure for outboard motor |
| 07/09/1991 | US5029562 Hybrid piston for high temperature engine |
| 07/02/1991 | US5027996 Method of manufacturing a hollow shaft with internal swellings of revolution and shaft obtained by this method |
| 06/26/1991 | EP0434607A1 Piston compressor of the horizontal type |
| 06/26/1991 | EP0434116A1 A piston and cylinder arrangment, more especially for a reciprocator or a high pressure internal combustion engine |
| 06/19/1991 | EP0432810A1 Pressure cast light metal piston for internal combustion engines |
| 06/11/1991 | US5022313 Composite piston assembly for automotive air conditioning compressor |
| 06/11/1991 | US5022312 Plastic piston head assembly |
| 05/29/1991 | CN1051779A Reduced friction piston |
| 05/28/1991 | US5018489 Heat-insulating piston |
| 05/22/1991 | EP0362261B1 Coolable plunger piston for internal combustion engines |
| 05/16/1991 | WO1991006756A1 Internal-combustion engine piston with bi-oval shaft |
| 05/16/1991 | DE4034808A1 IC engine crank drive - has axial guides at connecting rod ends, allowing oblique connecting rod position |
| 05/14/1991 | US5014604 Piston for internal combustion engine |
| 05/14/1991 | US5014601 Working cylinder |
| 05/14/1991 | US5014599 Two piece hydraulic piston assembly with swaged piston-sleeve joint |
| 05/08/1991 | DE3936961A1 Tauchkolben fuer verbrennungsmotoren mit gelenkig verbundenem kopf und schaft Plunger for internal combustion engines with a bandaged head and articulated Community |
| 04/24/1991 | EP0268666B1 Piston-and-cylinder arrangement with radially-yieldable piston head |
| 04/23/1991 | US5009124 Wrist pin |
| 04/17/1991 | EP0422856A1 Reduced friction piston |
| 04/12/1991 | CA2026330A1 Reduced friction piston |
| 04/04/1991 | DE3931949A1 Kolben fuer einen verbrennungsmotor Piston for an internal combustion engine |
| 04/03/1991 | EP0419999A1 Method for working friction stressed surfaces in internal combustion engines |
| 03/26/1991 | WO1991004429A1 Piston for an internal combustion engine |
| 03/26/1991 | CA2066236A1 Piston for a cylinder of a combustion engine |
| 03/20/1991 | EP0417931A1 Heat-insulating piston |
| 03/20/1991 | EP0417182A1 Device at expandable mounting means. |
| 03/20/1991 | EP0316330B1 Piston upper part with incorporated support bearings for supporting the piston pin of a piston engine |
| 03/19/1991 | US5000078 Light metal trunk piston for internal combustion engines |
| 03/13/1991 | CN2073053U Rubber piston for framework of inflater |
| 03/12/1991 | US4998461 Two-part plastic piston with excess resin receiving groove |
| 03/06/1991 | EP0415475A1 Pistons |
| 03/05/1991 | US4997024 Method of making a piston |
| 02/28/1991 | DE3927509A1 Liq. compressed plunger piston - is formed esp. of aluminium and has annular porous reinforcement lining in annular groove |
| 02/27/1991 | EP0356457B1 Light-metal trunk piston for internal combustion engines |
| 02/27/1991 | CN1049545A Lubricating mechanism for piston assembly of slant plate type compressor |
| 02/21/1991 | DE3926797A1 I.C. engine piston guide - has either rolling lever or cylinder piston sledge guides with cylinder and crankshaft axes offset |
| 02/19/1991 | CA1280389C Reciprocating piston compressor for small refrigerating machines |
| 02/14/1991 | DE3926185A1 Compound roller bearing shell for radial piston machine - has roller bearing shell of steel, bronze and plastics layers with indented shape cooperating with piston |
| 02/13/1991 | EP0412660A1 Heat-insulating piston |
| 02/06/1991 | EP0411913A1 Piston assembly of internal combustion engine |
| 02/05/1991 | US4989394 Press plunger having separable press ring |
| 01/30/1991 | EP0410453A1 Lubricating mechanism for a piston assembly of a slant plate type compressor |
| 01/29/1991 | US4987866 Light alloy piston for internal combustion engines |
| 01/29/1991 | US4987865 Reduced friction piston |
| 01/22/1991 | US4986231 Piston with graphite fiber mesh |
| 01/17/1991 | CA2018632A1 Ceramic engine |
| 01/15/1991 | US4984544 Lubricating means for pin connected relatively rotatable engine part and method of lubrication |
| 12/27/1990 | EP0403767A2 Internal combustion engine piston with a cooling oil stream through the piston head |
| 12/26/1990 | CN1010966B Piston of mud pump made up of polyurethane |
| 12/19/1990 | CN2067776U Oil pressure cylinder for body-building cycle |
| 12/12/1990 | EP0402287A1 Apparatus for anodising aluminium alloy pistons used in internal combustion engines |
| 12/07/1990 | CA2018288A1 Anodization process of aluminum alloy pistons for internal combustion engines |
| 12/05/1990 | EP0400334A2 Oilless reciprocating compressor and expansion apparatus |
| 11/28/1990 | EP0398993A1 Engine piston assembly and forged piston member therefor having a cooling recess. |
| 11/22/1990 | EP0398632A2 Hydraulic piston and cylinder arrangement |
| 11/21/1990 | CN1010497B Riciprocating piston using compression gaseous fluid |
| 11/20/1990 | US4971003 Piston of aluminum alloy for internal combustion engines |
| 11/15/1990 | WO1990013763A1 Piston |
| 11/14/1990 | CN1010424B Structurally lightened piston utilizable especially in an internul combustion engine |
| 11/13/1990 | US4969433 Piston for internal combustion engine |
| 10/24/1990 | EP0393922A1 Piston of aluminium for internal combustion engines |
| 10/24/1990 | EP0393142A1 Piston assembly and piston member thereof having a predetermined compression height to diameter ratio. |
| 10/23/1990 | US4964332 Piston and connecting pin assembly, a crosshead and connecting pin assembly, and a connecting pin assembly |
| 10/14/1990 | CA2012054A1 Reinforced piston |
| 10/09/1990 | US4961408 Pistons for reciprocating machines |
| 10/02/1990 | US4960221 Pressure vessel |
| 10/02/1990 | CA1274749A1 Fluid actuator including a composite piston rod |
| 09/25/1990 | CA1274433A1 Self-sealing piston and method |
| 09/25/1990 | CA1274432A1 Self-sealing piston for internal combustion |
| 09/19/1990 | EP0387931A1 Light metal piston for internal-combustion engines |
| 09/11/1990 | US4955284 Piston having ceramic parts |
| 08/14/1990 | US4947805 Coolable plunger piston for internal combustion engines |
| 08/08/1990 | EP0381556A1 Tubular pin with internal bulges, and process for making the same |
| 08/07/1990 | US4945864 Two cycle engine piston lubrication |
| 07/26/1990 | WO1990008253A1 Sliding surface lubrication particularly advantageous for a free piston stirling engine |
| 07/25/1990 | CN2059685U Wear-resistant single-action piston for drill pump |
| 07/17/1990 | US4941439 Combustion chamber surfaces of an internal combustion engine |
| 07/17/1990 | US4941397 Piston assembly for internal combustion engine |
| 07/12/1990 | WO1990007642A1 Light plunger piston for internal combustion engines |
| 07/12/1990 | DE3900186A1 Method for making a piston pin |
| 07/03/1990 | US4938121 Piston for internal combustion engines and like machines |