Global patent index - EP 1047650 A1

EP 1047650 A1 2000-11-02 - METHOD FOR INCREASING THE WEAR-RESISTANCE OF A WORK PIECE

Title (en)

METHOD FOR INCREASING THE WEAR-RESISTANCE OF A WORK PIECE

Title (de)

VERFAHREN ZUR ERHÖHUNG DER VERSCHLEISSBESTÄNDIGKEIT EINES WERKSTÜCKES

Title (fr)

PROCEDE POUR AUGMENTER LA RESISTANCE A L'USURE D'UNE PIECE

Publication

EP 1047650 A1 (DE)

Application

EP 98955441 A

Priority

  • DE 19745205 A
  • DE 19806888 A
  • EP 9806479 W

Abstract (en)

[origin: US6779267B1] A method for increasing the wear-resistance of a work piece involves connecting the work piece to a non-formable core material having a greater hardness than that of the work piece material. In order to improve the connection while simultaneously reducing the costs, the core material is connected in a form-fitting manner to the work piece by means of cold extrusion or hot extrusion of the work piece material.

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

C04B 37/02; B23P 11/00; B21K 25/00

IPC 8 full level (invention and additional information)

B23K 20/02 (2006.01); C04B 37/02 (2006.01); F01L 1/14 (2006.01); F01L 1/16 (2006.01)

CPC (invention and additional information)

B23K 20/02 (2013.01); F01L 1/14 (2013.01); F01L 1/16 (2013.01); B23K 2203/04 (2013.01); F01L 2103/00 (2013.01); Y10T 29/49311 (2013.01); Y10T 29/49314 (2013.01)

Designated contracting state (EPC)

DE FR IT SE

EPO simple patent family

US 6779267 B1 20040824; EP 1047650 A1 20001102; WO 9919271 A1 19990422

INPADOC legal status

2008-02-06 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20070807

2007-05-02 [17Q] FIRST EXAMINATION REPORT

- Ref Legal Event Code: 17Q

- Effective date: 20020228

2003-08-27 [111Z] REGISTERING OF LICENCES OR OTHER RIGHTS

- Ref Legal Event Code: 111Z

- Free Format Text: DEFRITSE

- Effective date: 20030402

2002-04-17 [17Q] FIRST EXAMINATION REPORT

- Ref Legal Event Code: 17Q

- Effective date: 20020228

2000-11-02 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20000515

2000-11-02 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): DE FR IT SE