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| Number | Title | Issue Date |
| 7356925 | Method for producing a cooled ring carrier The invention relates to a method for producing a cooled ring carrier (1) for an aluminium piston pertaining to an internal combustion engine and produced according to a casting method, comprising a cooling channel (6) which is embodied on the rear ( | 04/15/2008 |
| 7017914 | Piston assembly and method of manufacture A piston assembly having a piston and a piston ring. The ring mates to the piston in a groove on the outer surface of the piston. The ring includes two side walls that connect between inner and outer peripheral walls. The side walls converge outwardly at different a... | 03/28/2006 |
| 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 |
| 5901678 | Guided piston for internal combustion engine A guide ring for a piston comprises a split ring member having end edges which can be spread apart to slip the guide over the piston head and into a circumferential groove on an outer surface of a skirt portion of the piston head with the portions of the ... | 05/11/1999 |
| 5408916 | Piston having a liner and method for manufacturing same A piston assembly (10) for use in an engine. The piston assembly (10) includes a piston body (12) with a liner (24) covering the interior surface (22) thereof. The liner (24) imbues added strength and dimensional stability during casting, machining, engin... | 04/25/1995 |
| 5158008 | Light plunger piston for internal combustion engines A piston having a head with ring grooves, a skirt having hub bores, and a pin, with the following dimensions: L/D=0.45-0.8 H/D=0.25-0.5 A/D=0.3-0.5 T/D=0.45-0.8 where L=maxium length of the piston D=maximum diameter of the piston H=compression height A=maximum skir... | 10/27/1992 |
| 5076225 | Piston for an internal combustion engine A piston 2 for an internal combustion engine includes side wall portions 12 connecting skirt portions 10 to pin boss portions 6 so as to support the skirt portions 10 in a direction perpendicular to an axis 8 of the pin boss portions. The skirt supporting... | 12/31/1991 |
| 5054375 | Piston for internal combustion engine A piston comprises a crown part, a piston under part, a first shoulder at a thrust side formed between the crown part and the piston under part, a second shoulder at an anti-thrust side formed between the crown part and the piston under part, a first in-l... | 10/08/1991 |
| 5048398 | Single, light-weight and low friction light-metal piston for internal-combustion engines The technical problem is to reduce the operating noise of such a piston. It is solved by means of a piston having the following dimensions: a) A=(0.45-0.65) D; b) H=(0.25-0.4) D; c) A=(0.3-0.4) D; d) A greater than or equal to B; e) T=(0.45-0.8) D; f) the... | 09/17/1991 |
| 4986234 | Polymetallic piston-cylinder configuration for internal combustion engines A piston-cylinder combination for internal combustion engines made from a varying bonded combination of two or more alloys having dissimilar coefficients of thermal expansion. By regulating the volumetric percentages of the alloys vis-a-vis their location... | 01/22/1991 |
| 4850313 | Cruciform engine A cruciform internal combustion reciprocating engine characterized by two right angularly related pairs of axially spaced cylinders with related piston units including pairs of axially aligned, axially spaced pistons, each piston is engaged in one of the ... | 07/25/1989 |
| 4829883 | Pistons An aluminium or aluminium alloy cast piston has a piston ring carrier of a ferrous material encast therein. The carrier has sides which converge towards their radially inner ends. As a result of this, and as a result of a lesser coefficient of thermal exp... | 05/16/1989 |
| 4677900 | Pistons for internal combustion engines A piston carries on its skirt surface a number of separate strips of a plastics material, such as a polyetheretherketone alloy, so that the strips are hydrodynamically lubricated and transmit lateral thrust from the piston to an associated cylinder or lin... | 07/07/1987 |
| 4669367 | Light metal alloy piston A light metal alloy cast piston including a thermal strut (32, 48, 52) arranged in a shoulder portion of the piston skirt. The thermal strut is composed of an annular fiber-reinforced metal portion in which high-tensile-strength reinforcing fibers are int... | 06/02/1987 |
| 4314531 | Pistons and cylinder liners A piston mainly composed of an aluminium alloy for use in a cylinder of aluminium alloy. The piston is provided with one or more inserts of ferritic steel. The insert or inserts extend across opposed thrust faces of the piston and form part of the running... | 02/09/1982 |
