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| Number | Title | Issue Date |
| 8136243 | Method for producing a piston for an internal combustion engine and the thus produced piston The invention relates to a method for producing an internal combustion engine piston which is provided with at least one cooling channel (12) and at least one reinforced piston ring groove (14) consisting in producing a piston blank (1), in form... | 03/20/2012 |
| 7765696 | Piston for an internal combustion engine and method for coating its pin bores Disclosed is a piston (1) for a combustion engine, comprising hub bores (3) that are provided with plain bearing surfaces (5) and are used for accommodating a piston pin. In order to very effectively and inexpensively prevent the piston pin and ... | 08/03/2010 |
| 7377035 | Refrigeration device with improved DC motor A miniature cooling device includes numerous improvements capable of increasing the reliability and useful lifetime of the device, as well as improving electrical power to cooling power conversion efficiency. The improvements include a unitary DC motor shaft design ... | 05/27/2008 |
| 7287459 | Piston for internal combustion engine A piston for an internal combustion engine, the piston having a skirt part, comprises: a resinous coating layer formed on a surface of the skirt part; and a plurality of concaves regularly arranged in the resinous coating layer. The concaves are non-coated regions i... | 10/30/2007 |
| 7255084 | Piston with a skirt having a low coefficient of friction A piston for an internal combustion motor has a skirt with a surface, which is at least partially polished and thereafter coated with a coating having a hardness of greater than 8 GPa and having a coefficient of friction of less than 0.20. The piston has an increase... | 08/14/2007 |
| 7171936 | Piston having a patterned coating and method of applying same The present invention relates to a piston adapted for reciprocal movement within the cylinders of an internal combustion engine. The piston includes a body having a crown formed at the uppermost margins of the body and a skirt, depending from the crown, adapted for ... | 02/06/2007 |
| 7066132 | Piston with oxidation catalyst Pistons reciprocating in cylinders of a hydrocarbon-fueled internal combustion engine tend to trap air and unburned fuel between the top of the piston head and its enclosing cylinder wall. The circumferential side surface (or land) of the piston head above its upper... | 06/27/2006 |
| 7051645 | Piston for an engine A piston for use in an engine. The piston includes a piston head having at least one ring groove. The piston also includes a piston skirt coated with a first thickness of a bronze coating material, and a side panel adjacent the piston skirt that is coated with a sec... | 05/30/2006 |
| 6877473 | Diesel engine piston The invention relates to a piston for a diesel engine comprising a combustion cavity. The piston crown and the cavity are plasma-sprayed with a coating. The aim of the invention is to produce the coating in a cost-effective manner. To achieve this, the layer thickne... | 04/12/2005 |
| 6532655 | Method of manufacturing hollow piston for compressors A method of manufacturing a hollow piston for variable displacement swash plate compressors of air conditioning systems is disclosed. This method produces a desired hollow piston by separately forming a body and a cap and by simply machining the body and ... | 03/18/2003 |
| 6507999 | Method of manufacturing internal combustion engine pistons A piston production method produces an internal combustion engine piston. The method comprises forging a billet from an initial billet comprising an aluminum alloy that comprises silicon, intermetallic particles, and injected hardening particles, the forg... | 01/21/2003 |
| 6428909 | Aluminum alloy member and production method thereof To provide an aluminum alloy member having a high machinability while keeping a sufficient mechanical strength and a sufficient wear resistance, and a method of producing the aluminum alloy member. In an aluminum alloy member formed from an aluminum-silic... | 08/06/2002 |
| 6070323 | Piston for internal combustion engine and material therefore A method of forming a piston for a reciprocating machine such as an engine. The piston is formed from a powdered material that is comprised of aluminum alloyed with a material selected from the group of silicon (Si) and iron (Fe) having a particle diamete... | 06/06/2000 |
| 5979298 | Cooling gallery for pistons A cast piston having a metal insert that includes a cooling gallery and defines a piston ring groove. The piston insert includes an annular base having an annular cavity formed therein and an annular ring which extends radially outward from the base. A ca... | 11/09/1999 |
| 5960542 | Method of producing piston for swash plate compressor In order to produce a single headed piston for a swash plate compressor, the following steps are used. First, a shaped block of metal is cast, the block including a plurality of unfinished piston structures which are aligned and integrated, each unfinishe... | 10/05/1999 |
| 5743012 | Piston and piston ring A method of reducing wear between the radial faces of a piston ring and the radial faces of the co-operating piston ring groove in an aluminium alloy piston is described. The method comprises the steps of locally alloying the region in which the piston ri... | 04/28/1998 |
| 5562017 | Reusable press fit connection of a hydraulic power apparatus and method of assembly An apparatus (10) including a housing (14) defining a chamber (16) and a movable piston (18, 100) dividing the chamber (16) into first and second chamber portions (20, 22). An apparatus (38, 40) directs fluid pressure into either the first or second chamb... | 10/08/1996 |
| 5490446 | Apparatus and method for a piston assembly An apparatus and method is provided for producing a piston assembly for use in a fluid translating device such as a hydraulic pump or motor. In the subject arrangement, a piston is provided having a cavity at one end thereof and a slipper having a spheric... | 02/13/1996 |
| 5469777 | Piston assembly having abradable coating A piston assembly operable within a fluid bathed, cylinder wall, comprising a piston body (10) having at least one annular land (36) adapted to be in close-fitting relationship to the cylinder wall (37) an abradable coating (15) tenaciously adhered to sai... | 11/28/1995 |
| 5430938 | Method of making and using a piston ring assembly Method of making a piston ring assembly by providing a metallic (i.e. cast aluminum) piston with a crown and an annular depending side wall; machining a stepped annular groove in the side wall having a total height of at least 4 mm (preferably having a co... | 07/11/1995 |
| 5333536 | Piston and method of manufacture A piston and method of manufacture is disclosed wherein a low friction plastic material D is sprayed upon a molded cylindrical metallic member, having a single intermediate annular groove C, forming a coating having wear surfaces A and B on each side of t... | 08/02/1994 |
| 5313919 | Low friction reciprocating piston assembly A low-friction piston construction for use in an oil-fed cylinder bore with the piston skirt relieved to define lands that are coated with SFL (graphite, MoS2, BN, and a special expoxy resin). A method of making such piston construction includi... | 05/24/1994 |
| 5314553 | Fiber-reinforced resin member and method of producing the same A fiber-reinforced resin member of the present invention comprises a solid or hollow rod member (2) made of a fiber-reinforced resin material (5, 6), a soft metal layer (3) formed on the outer periphery of the rod member by squeezing a soft metal on the o... | 05/24/1994 |
| 5257603 | Coated piston and process for applying coating A coated piston and a process for applying same to a piston of an internal combustion engine having a cylinder. The piston and cylinder are made primarily from a lightweight metal. Graphite bonded in cured resin is applied to the piston and forms a durabl... | 11/02/1993 |
| 5239955 | Low friction reciprocating piston assembly A low-friction piston construction for use in an oil-fed cylinder bore with the piston skirt relieved to define lands that are coated with SFL (graphite, MoS2, BN, and a special expoxy resin). A method of making such piston construction includi... | 08/31/1993 |
| 5224266 | Method of manufacturing a hydraulic pump cylinder A method of manufacturing a hydraulic pump cylinder for use in a hydraulic system having a hydraulic fluid input, a pump for pumping hydraulic fluid to create and maintain a sufficient fluid pressure in the system and a piston. The method includes the ste... | 07/06/1993 |
| 5195478 | Piston for an internal combustion engine Disclosed is a piston for an internal combustion engine, which includes a land portion, and a skirt portion including a non-coated portion which is formed in an arbitrary shape on a sliding portion thereof and a coated portion which is formed on a sliding... | 03/23/1993 |
| 5129378 | Two-cycle marine engine having aluminum-silicon alloy block and iron plated pistons A two-cycle, water-cooled marine engine having an engine block composed of a hypereutectic aluminum-silicon alloy. The silicon is distributed as discrete particles throughout the block, including the area bordering the walls of the cylinder bores. An alum... | 07/14/1992 |
| 5080056 | Thermally sprayed aluminum-bronze coatings on aluminum engine bores This specification describes the thermal spraying of an aluminum-bronze alloy coating onto aluminum alloy cylinder bores or piston skirts to provide a scuff- and wear-resistant surface.... | 01/14/1992 |
| 4997024 | Method of making a piston A method of bonding a component in a piston, involves the steps of coating the component surfaces to be bonded with an oxidation-resistant particulate material, preheating the coated component, placing the preheated component in a casting die and then cas... | 03/05/1991 |
| 4941397 | Piston assembly for internal combustion engine A piston member for an internal combustion engine of, for example, a motor bicycle is provided with bosses having inner end surfaces opposing to each other into which a piston pin is inserted. A connecting rod has small and large end portions and the smal... | 07/17/1990 |
| 4918806 | Method for manufacturing a piston In a method for manufacturing a piston a metal piston is prepared which has a skirt tapered towards the bottom end to such an extent that a diameter of the metal piston becomes uniform after a heat treating step. The metal piston is heat treated in a gas ... | 04/24/1990 |
| 4827586 | Method of making a seal A decompression seal mechanism has a body containing a series of cavities formed by alternate grooves and lands and formed of a porous structure deposited by a plasma spray, and means for supplying said porous structure with a positive flow of liquid lubr... | 05/09/1989 |
| 4694813 | Piston for internal combustion engines In a piston for internal combustion engines, a cover layer comprising a material having a relatively low thermal conductivity has been applied to the piston head by plasma or flame spraying. To increase the life of the cover layer until it separates from ... | 09/22/1987 |
| 4664021 | Treatment of pistons The detonation-resistant material is applied to a piston to reduce the likelihood of damage to the piston caused by pinking or knocking. The detonation-resistant material, which may be nickel or a nickel based material, is applied to the upper part of the... | 05/12/1987 |
| 4519119 | Method of manufacturing a piston for a swash plate type compressor A piston for a swash plate type compressor is disclosed in which a plurality of similar pistons are reciprocated to provide a compressing operation by means of a swash plate which is mounted on the drive shaft and rotated in the compressor cylinder. The p... | 05/28/1985 |
| 4494294 | Method of manufacture of hydraulic cylinders utilizing bronze overlays for engaging surfaces The method of manufacture of a hydraulic cylinder in which a piston for the cylinder is formed from a steel workpiece which is rotated and a bronze overlay fused into its surface while it is rotating, the overlay being continuously monitored and machined ... | 01/22/1985 |
| 4435893 | Method of manufacture of hydraulic cylinders utilizing bronze overlays for engaging surfaces The method of manufacture of a hydraulic cylinder in which a piston for the cylinder is formed from a steel workpiece which is rotated and a bronze overlay fused into its surface while it is rotating, the overlay being continuously monitored and machined ... | 03/13/1984 |
| 4395442 | Method of coating the working surfaces of piston operating devices A method of protecting the frictional engaging surfaces of an aluminum alloy piston-cylinder machine, including the steps of: coating the surface of one of the piston-cylinder members with an epoxy-resin in which is mixed a ceramic oxide material, placing... | 07/26/1983 |
| 4205649 | Light-metal piston A light-metal piston with parts hard-eloxated to increase their resistance to heat and mechanically reinforced to the depth of the hard eloxation.... | 06/03/1980 |
