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Class 29/888.045 - With thermal barrier or heat flow provision


Subclass of Class 29 - Metal working
Definition: Process wherein the manufactured piston has structure especially
No. of patents: 23
Last issue date: 03/30/2010


NumberTitleIssue Date
7685710Method for producing a piston for an internal combustion engine
The invention relates to a method for producing a piston (1) for an internal combustion engine. The inventive method comprises producing the base (4) from aluminum by a forging process, casting, by way of a composite casting process, a ring support (
03/30/2010
7484295Method of mounting a metal sheet ring assembled and welded in a carrier hoop to conform the annular cooling tube of a piston of internal combustion engine
A metal sheet ring (5) has a web (15) extending between two fins (10) and (11) projecting towards a carrier hoop (6), wherein free ends of the fins rest on and couple to respective annular seats (8) and (9) defined in...
02/03/2009
7356925Method 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
7337539Method for production of a coolable annular support for internally cooled piston rings
A method of producing a coolable annular support for internally cooled piston rings and comprising an annular body, a cooling channel plate and respective tubular bodies or plate-shaped bodies disposed on or in openings of the plate. End portions of legs of the cool...
03/04/2008
7086152Engine piston and manufacture thereof
A method of forming a low-friction, helically ridged skirt surface of an engine piston comprises cutting a continuous groove in a piston body rotating about axis so that adjacent groove turns intersect as ridges and carry lubricating oil which forms a film on the ri...
08/08/2006
7077077Coolable annular support for intentionally cooled piston rings and method for the production thereof
The invention relates to a coolable annular support (1) for internally cooled piston rings, comprising an annular body (2) embodied as a circular ring and a cooling channel plate (3), the cooling channel plate (3) being a component of the...
07/18/2006
7069881Cooled ring carrier for a piston
The invention relates to a cooled ring carrier that is cast into a piston for internal combustion engines. According to the invention, the zone of the ring carrier facing the cooling channel is coated, thereby preventing air from escaping from the cooling channel th...
07/04/2006
7030486High density integrated circuit package architecture
This invention relates to a high density architecture for an integrated circuit package (10) in which a plurality of circuit communication wafers (12) are disposed in a stack with a plurality of cooling plates (14) between them, and wherein circ...
04/18/2006
7003878Method for producing a ring support with a sheet metal cooling channel welded thereon
The invention relates to a method for producing a ring support (1) with a sheet metal cooling channel welded thereon (5), which is transfused later with an aluminium melt for producing a piston. The aim of the invention is to improve the production of ...
02/28/2006
6938604Cooling channel cover for a one-piece piston of an internal combustion engine
A cooling channel cover for a one-piece piston of an internal combustion engine, the piston having a closed cooling channel that runs around inside the piston crown, at the level of the piston ring band, and a ring-shaped recess provided between the piston ring band...
09/06/2005
6427579Piston of internal combustion engine and method of producing same
A piston of an internal combustion engine comprises a crown portion constructed of an aluminum alloy. The crown portion has a bowl in a top surface thereof. The bowl serves as a combustion chamber. Boss portions are projected downward from the crown porti...
08/06/2002
5608967Method of making piston for an aircraft brake with honeycomb insulated piston head
An aircraft brake assembly with stators and interleaved rotors with a piston support and cylinders mounted thereon for cooperative action by pistons slidably mounted therein for brake actuation wherein each piston has a piston head with a honeycomb insula...
03/11/1997
5309818Method for the manufacture of a cooled 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...
05/10/1994
5207147Method for the manufacture of a piston head having a cooling chamber and piston head obtained from said method
A method for the manufacture of a piston head having a cooling chamber is disclosed. The two portions composing the piston head are made separately; the underside of the upper portion is provided with a circumferential peripheral groove; notches are provi...
05/04/1993
5056218Method of making a hollow metal piston having elastic strip casted to its skirt
A light metal piston for internal combustion engines has a pair of inserts on the inside of upper piston skirt made of a material of lower thermal expansion coefficient than that of the light metal, such as steel. Each insert has a pair of bands which are...
10/15/1991
4939984Investment-cast piston crown cap with encapsulated non-metallic insulating core
Pistons for internal combustion engines, particularly compression ignition engines. The pistons have insulating crowns and include a crown having a cap thereon, extending over the crown surface area, the crown cap being composed of an iron-based or a nick...
07/10/1990
4875616Method of producing a high temperature, high strength bond between a ceramic shape and metal shape
A method for producing a high temperature, high strength bond between a ceramic shape and a metal substrate, such as joining a ceramic cap to a piston for an internal combustion engine. The composite joint is effected through the use of a ceramic preform ...
10/24/1989
4694813Piston 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
4651630Thermally insulating pistons for internal combustion engines and method for the manufacture thereof
A thermally insulating piston for internal combustion engines is provided on the piston crown or in its dished combustion space portion with a thermally insulating liner which on the side thereof facing the combustion space consists entirely of a ceramic ...
03/24/1987
4553472Pistons and method for their manufacture
A piston for an internal combustion engine is provided with a crown portion heat insulated from the remainder of the piston over all or substantially all of the area of the crown, to reduce the transfer of heat from the crown to the remainder of the pisto...
11/19/1985
4495684Process of joining a ceramic insert which is adapted to be embedded in a light metal casting for use in internal combustion engines
Ceramic inserts are embedded in thermally highly loaded zones and/or as a heat insulation in light metal castings for use in internal combustion engines. To provide a firm joint between the insert and the light metal, a metallic material which resists cre...
01/29/1985
4312106Process for applying a heat-barrier layer to a piston crown
The piston of a piston-type machine has on its surface a heat-barrier layer of plastic material which is cast into a recess formed in the piston crown. A pouring means formlockingly enclosing the upper edge is put on the piston, held in a vertical positio...
01/26/1982
4120081Manufacture of pistons incorporating a thermal barrier
A piston incorporating a thermal barrier is produced by first making an annular piston ring carrier insert from steel. The insert comprises an annular body to the upper and lower radially-inner edges of which are secured the upper and lower edges of an an...
10/17/1978
 
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