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| Number | Title | Issue Date |
| 8042453 | Piston with a skirt having oil flow slots A piston has a pair of diametrically opposite skirt portions each having an opening providing fluid communication between an outer surface of the skirt portions and an internal cavity. The openings provide the outer surfaces of the skirt portions with a circumferent... | 10/25/2011 |
| 7895937 | Piston having twisted skirt panels A piston assembly is disclosed herein. The piston assembly is integrally formed and unitary and is centered on a central longitudinal axis. The piston assembly includes a head with ring belt having a plurality of ring grooves. The piston assembly also includes first... | 03/01/2011 |
| 6862977 | Piston A light weight piston for an internal combustion engine is disclosed that minimizes the stresses found in a transition area between the piston head and the associated piston pin bosses while maintaining a flexible soft connection between the piston skirts and the pi... | 03/08/2005 |
| 6216584 | Piston having an improved barrel portion, and a compressor using the same For being slidably inserted into a cylinder bore defined by a cylindrical surface extending in a predetermined direction, a piston (8) has a head portion (81) extending perpendicular to the predetermined direction and a barrel portion (82) connected to th... | 04/17/2001 |
| 6152017 | Lightweight piston A piston (10) comprises a piston shaft (16) and an essentially cylindrical upper region (14). The piston shaft (16) essentially comprises two opposite shaft wall portions (16) relative to the pin axis. Two pin hubs (24) are also set back relative to the p... | 11/28/2000 |
| 5713262 | Engine piston having a recess defined in the lower surface of the head A piston, which reciprocates in a cylinder bore of an engine, is supplied with lubricating oil. The piston includes pin bosses provided under a piston head, a symmetrical pair of skirts, and side walls connecting the pin bosses and the skirts. The side wa... | 02/03/1998 |
| 5575173 | Conjugate drive mechanism A motion converter employs a shuttle movable in a reciprocating fashion along a rectilinear path and having an aperture therein. One side of the aperture is defined by a first trackable profile and an opposite side of the aperture is defined by a second t... | 11/19/1996 |
| 5513541 | Conjugate drive mechanism A motion converter employs a shuttle movable in a reciprocating fashion along a rectilinear path and having an aperture therein. One side of the aperture is defined by a first trackable profile and an opposite side of the aperture is defined by a second t... | 05/07/1996 |
| 5492052 | Piston-and-connecting rod assembly A piston-and-control rod assembly includes a hollow piston having a skirt; axially spaced, circumferential piston ring grooves provided in the skirt; a radial crown having an inner face; and a bearing block projecting from a central portion of the inner f... | 02/20/1996 |
| 5445039 | Conjugate drive mechanism A scotch yoke type motion converter employs a shuttle movable in a reciprocating fashion along a rectilinear path and having an aperture therein. One side of the aperture is defined by a first trackable profile and an opposite side of the aperture is defi... | 08/29/1995 |
| 5404792 | Piston for internal combustion engine A piston for an internal combustion engine comprises at least a pair of ribs arranged between an inner surface portion of a skirt and side portions of pin bosses. The ribs are symmetrical with respect to a thrust center line of the piston and have in a lo... | 04/11/1995 |
| 4876947 | Pistons with bearing lands Pistons are discribed comprising a crown portion which also includes a piston ring belt and gudgeon-pin bosses and which crown portion comprises a ferrous allow and a seperate articulated skirt portion comprising a casting of aluminum alloy, steel or cast... | 10/31/1989 |
| 4843952 | Low-height articulated piston with skirt-overhanging guide portions on head A two-part, low compression height, open-ended hollow skirt-type piston for internal combustion engines has a piston pin creating an articulated connection of the separate skirt and head parts. Guide portions (5) protruding axially in the direction of the... | 07/04/1989 |
| 4817505 | Piston with stiffening structure for lower skirt regions Pistons are described having improved stiffness of the lower skirt regions to improve piston guidance and oil film distribution. The pistons comprise a crown portion including piston ring grooves and a skirt portion, the skirt portion being divided into a... | 04/04/1989 |
| 4752995 | Manufacture of pistons A method is disclosed of manufacturing a piston having a skirt on which are formed a plurality of bearing surfaces, each bearing surface being at a predetermined axial position on the skirt, being spaced outwardly of the skirt to a required radial dimensi... | 06/28/1988 |
| 4715267 | Bearing surface for internal combustion engine piston skirt A piston for an internal combustion engine is provided with two separate skirt portions on either side of the gudgeon pin bore. Each skirt portion is the shape of a sector of a cylinder and is cantilevered on a pair of struts connected to the skirt member... | 12/29/1987 |
| 4702151 | Pistons A piston comprises a crown (10) and a ring band (11) carried on two gudgeon pin bosses (12a, 12b) by two supports (20). There are upper and lower pairs of struts (21a, 21b, 21c, 21d) on each side of the gudgeon pin bosses, one strut of each pair projectin... | 10/27/1987 |
| 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 |
| 4638725 | Light alloy piston In a light plunger piston for internal combustion engines, in order further to save weight and to achieve an elastic running behaviour, the piston skirt is reduced to three relatively narrow guide plates. The guide plates are attached through longitudinal... | 01/27/1987 |
| 4632019 | Airplane airconditioner The aircraft pre-ventilation system has a ventilation unit mounted for movement along the ground. A primary and a return duct carry air between the ventilator and the aircraft door opening. The ducts are connected to a fitting which is designed to fit int... | 12/30/1986 |
| 4161165 | Piston for an internal combustion engine This disclosure deals with a reciprocating piston for an internal combustion engine, particularly for a diesel engine. The piston is made of a relatively high strength metal such as iron, and no more material is used than is necessary to withstand the the... | 07/17/1979 |
| 3987709 | Piston A piston comprising a head, a pair of opposed boss-carrying elements depending from the head and a pair of opposed skirt portions separated from each other and from the head. The skirt sections are supported from the boss-carrying elements by upper and lo... | 10/26/1976 |
