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| Number | Title | Issue Date |
| 7101302 | Planetary transmissions having a stationary member and input clutches The family of transmissions has a plurality of members that can be utilized in powertrains to provide at least eight forward speed ratios and one reverse speed ratio. The transmission family members include three planetary gear sets having seven torque-transmitting ... | 09/05/2006 |
| 6062125 | Piston-cylinder assembly In a piston-cylinder assembly with a shaftless piston, the aim is to improve the lateral guidance of the connecting rod, to reduce edge wear and the seizing tendency in the event of fault during the combustion process. Consequently, the piston has at leas... | 05/16/2000 |
| 6048126 | Mushroom-type pin retainer A mushroom-type pin retainer for a pin having a central bore and which connects a piston and a piston rod of an internal combustion engine. The pin retainer is comprised of a mushroom head connected to a shaft. The shaft has a section of larger diameter f... | 04/11/2000 |
| 5913960 | Pistons A method is described of making a piston crown, the method comprises the steps of making a lower crown portion, the lower crown portion also having piston pin bosses, making an upper crown portion which co-operates with the lower crown portion and joining... | 06/22/1999 |
| 5890417 | Piston for a reciprocating compressor A piston/cylinder assembly for a reciprocating compressor has a piston comprising telescopingly connected first and second piston members. The first piston member is connected to a connecting rod. The second piston member is provided with a piston head an... | 04/06/1999 |
| 5701802 | Multipart piston for an internal combustion engine An engine piston includes a piston head; a first bearing block forming a one-piece component with the piston head and having a first bearing face; a piston skirt being a component separate from the piston head; a second bearing block forming a one-piece c... | 12/30/1997 |
| 5692430 | Articulated piston apparatus including a cooling gallery An articulated piston apparatus including an improved skirt member wherein the skirt member includes a cooling gallery channel with means for providing a directed flow of lubricant from the cooling gallery channel to the elements of the piston apparatus d... | 12/02/1997 |
| 5499572 | Bi-tech piston A piston for developing compression within the cylinder of a combustion engine or other type compression generating apparatus; said piston being a two-piece assembly, whereas the topside portion, or traditionally known as the crown, being of relative disc... | 03/19/1996 |
| 5483869 | Sealed articulated piston The design and construction of past articulated pistons include an open space between a head portion and an independent skirt portion. The open space allows excess cooling fluid, such as oil, to exit the piston and flow toward the cylinder, increasing oil... | 01/16/1996 |
| 5394788 | Head for articulated piston A cooled piston head and method of manufacture, the piston head having a closed cooling chamber. In one embodiment, the piston head is formed of a top member, an intermediate member and a pin boss member joined to each other preferably by welding; the top... | 03/07/1995 |
| 5307732 | Piston assembly having a wrist pin bolted therein The design and construction of past piston assemblies having a wrist pin bolted to a connecting rod have excessive weight and structural components, and requires more complex machining techniques and tooling. The present invention overcomes these problem ... | 05/03/1994 |
| 5289758 | Pin plugs for use in a piston assembly The design and construction of past piston assemblies having a wrist pin retained by a pair of snap rings positioned in a groove. Other past piston assemblies have a stubpin or cap positioned within a bore of a piston member or the wrist pin. In these app... | 03/01/1994 |
| 5211101 | Piston with oval shaped lands A piston for an internal combustion engine with a separate head and skirt which are joined by the piston pin. At least one of the upper lands has a reduced diametrical clearance with the cylinder wall in an area perpendicular to the pin direction. The bot... | 05/18/1993 |
| 5144884 | Two-part piston assembly device A piston assembly for use in a piston cylinder of an engine is disclosed. The piston assembly includes a piston rod which connects the piston assembly to a crankshaft. The piston rod has a pin receiving opening at an upper end. A piston head having a tran... | 09/08/1992 |
| 5115726 | Two-piece piston assembly A two-piece, or articulated, piston assembly for internal combustion engines, comprising a head composed of a top portion and a pair of pin bosses integral with it, a skirt portion, and a wrist pin mounted in the pin boss holes. The pin bosses are secured... | 05/26/1992 |
| 5040454 | Piston assembly and piston member thereof having a predetermined compression height to diameter ratio Present day diesel engines having aluminum piston assemblies are limited to combustion chamber pressures of approximately 12,410 kPa (1,800 psi) whereas the desire is to increase such pressures up to the 15,170 kPa (2,200 psi) range. To reach such levels ... | 08/20/1991 |
| 4905577 | Line-contact-type spherical bearing for connecting piston to connecting rod A hydraulically-operated piston machine includes at least one cylinder and a piston axially movably guided in the cylinder. The piston is connected to a crankshaft or the like by means of a connecting rod. The connecting rod and the piston each have spher... | 03/06/1990 |
| 4805518 | Piston A crosshead piston 10 comprises a head member 18 and a skirt member 20, each of which can be secured independently to a piston pin 14. The skirt 20 has a reduced diameter upper end portion 66 which fits within lower end 24 of the head member ring belt por... | 02/21/1989 |
| 4714008 | Piston for internal combustion engines and the like An improved piston for operation within a cylinder. The piston includes a main piston body having a primary cylindrical surface, a first end, and a secondary surface of smaller diameter, the secondary surface of smaller diameter is disposed between the pr... | 12/22/1987 |
| 4508019 | Reduced impact piston assembly A reduced impact piston assembly including a cylindrical body with a cavity formed therein and having a cross-bore formed therethrough which intersects the cavity. The cross-bore receives a piston pin which has an exposed intermediate portion aligned with... | 04/02/1985 |
| 4358881 | Method for manufacturing a piston with a separate skirt A method for manufacturing a piston for internal combustion engines, compressors and the like, comprising a head portion articulately connected to a separate skirt portion, wherein the skirt portion comprises a steel tubular part obtained by cutting, bend... | 11/16/1982 |
| 4256022 | Piston for reciprocating internal combustion engines, typically diesel engines A piston for reciprocating internal combustion engines, especially Diesel engines, is provided having a crown exposed to the heat of combustion gases, a guide member spaced from said crown, a shell connecting said crown and guide member, a ring carrier co... | 03/17/1981 |
| 4073220 | Piston assembly An improved piston assembly for high-power internal combustion engines such as supercharged diesel engines. The piston includes separate head and skirt portions. An elongated bearing member having an external journal surface is formed across the bottom of... | 02/14/1978 |
