Global patent index - EP 0940830 A3

EP 0940830 A3 2000-10-25 - Contact piece for vacuum chambre and manufacturing process

Title (en)

Contact piece for vacuum chambre and manufacturing process

Title (de)

Kontaktstück für eine Vakuumkammer und Verfahren zur Herstellung des Kontaktstückes

Title (fr)

Pièce de contact pour chambre à vide et son procédé de fabrication

Publication

EP 0940830 A3 (DE)

Application

EP 99103559 A

Priority

DE 19809306 A

Abstract (en)

[origin: EP0940830A2] The contact piece has a base section which has several concentric grooves in the region of the surface of the contact piece, which are axially open to the contact piece surface or a counter contact. The base section is made of a good electrical conductor such as copper, while the surface of the contact piece is made of a less good conductor such as chrome and a chrome copper alloy. The less good conductor is situated in the grooves so that rings of good and less good conductors are arranged on the surface. A method of manufacturing a contact piece is also claimed.

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

H01H 1/02; H01H 33/66

IPC 8 full level (invention and additional information)

H01H 1/02 (2006.01)

CPC (invention and additional information)

H01H 1/0206 (2013.01)

Citation (search report)

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

EP 0940830 A2 19990908; EP 0940830 A3 20001025; DE 19809306 A1 19990909

INPADOC legal status

2001-01-31 [18W] WITHDRAWN

- Ref Legal Event Code: 18W

- Date of withdrawal: 20001208

2000-10-25 [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

2000-10-25 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Ref Legal Event Code: AX

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

1999-09-08 [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

1999-09-08 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Ref Legal Event Code: AX

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