Global Patent Index - EP 1081367 A2

EP 1081367 A2 2001-03-07 - Engine piston and method for cladding said piston with a hard layer

Title (en)

Engine piston and method for cladding said piston with a hard layer

Title (de)

Kolben für Verbrennungskraftmaschinen und Verfahren zum Herstellen der Oberflächenarmierung eines Kolbens

Title (fr)

Piston pour moteur et procédé pour couvrir ce piston avec une couche dur

Publication

EP 1081367 A2 (DE)

Application

EP 00118129 A

Priority

DE 19941626 A

Abstract (en)

[origin: DE19941626C1] Piston made of an aluminum alloy has an annular groove region provided with an anodizing coating (6). A solid lubricant (12) is embedded in the pores and gaps (10) of the coating open to the surface. An Independent claim is also included for a process for the production of surface sheathing a piston comprises applying the solid lubricant in suspension, and inserting into the gaps of the coating using capillary forces whilst the surface region of the coating is wetted with the suspension by spraying.

Abstract (de)

Die Erfindung betrifft einen Kolben aus Aluminiumlegierung für Verbrennungskraftmaschinen, bei dem zumindest ein Ringnutbereich mit einer Eloxalbeschichtung versehen ist; um den Verschleiß zu reduzieren, ist der Kolben so ausgebildet, dass in die oberflächenoffene Spalte der Eloxalbeschichtung ein Festschmierstoff eingelagert ist. <IMAGE>

IPC 1-7 (main, further and additional classification)

F02F 3/12

IPC 8 full level (invention and additional information)

F02F 3/10 (2006.01)

CPC (invention and additional information)

F02F 3/10 (2013.01); F05C 2201/021 (2013.01); F05C 2201/0448 (2013.01)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

DE 19941626 C1 20010215; DE 19941626 C5 20140515; EP 1081367 A2 20010307; EP 1081367 A3 20020130

INPADOC legal status


2002-08-28 [18W] WITHDRAWN

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- Date of withdrawal: 20020629

2002-01-30 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2002-01-30 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

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2002-01-30 [RIC1] CLASSIFICATION (CORRECTION)

- Ref Legal Event Code: RIC1

- Free Format Text: 7F 02F 3/12 A, 7F 02F 3/10 B

2001-03-07 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2001-03-07 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Ref Legal Event Code: AX

- Free Format Text: AL;LT;LV;MK;RO;SI