Global Patent Index - EP 0870103 B1

EP 0870103 B1 2000-03-08 - PISTON WITH COOLING CHANNEL

Title (en)

PISTON WITH COOLING CHANNEL

Title (de)

TAUCHKOLBEN MIT KÜHLKANAL

Title (fr)

PISTON PLONGEUR A CANAL DE REFROIDISSEMENT

Publication

EP 0870103 B1 (DE)

Application

EP 96945881 A

Priority

  • DE 9602172 W
  • DE 19548811 A

Abstract (en)

[origin: DE19548811A1] The invention concerns a light-metal piston which has a sheet-metal cooling channel integrally cast in the piston head. In order to improve the heat transfer between the piston material and the cooling channel and to reduce the manufacturing costs of the cooling channel, the channel has a narrow slit, which allows oil to pass, extending along at least part of the channel wall.

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

F02F 3/22; B22D 19/00

IPC 8 full level (invention and additional information)

B22D 19/00 (2006.01); B22D 19/08 (2006.01); F01P 3/10 (2006.01); F02F 3/22 (2006.01); F16J 1/09 (2006.01)

CPC (invention and additional information)

B22D 19/0027 (2013.01); F02F 3/22 (2013.01); F02F 3/10 (2013.01); F02F 2003/0061 (2013.01); F05C 2201/021 (2013.01); F05C 2201/0448 (2013.01); F05C 2253/12 (2013.01)

Designated contracting state (EPC)

DE FR GB IT

EPO simple patent family

DE 19548811 A1 19970703; DE 59604627 D1 20000413; EP 0870103 A1 19981014; EP 0870103 B1 20000308; JP 2000502772 A 20000307; JP 3945821 B2 20070718; US 5947065 A 19990907; WO 9724520 A1 19970710

INPADOC legal status


2011-03-31 [PG25 IT] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: IT

- Free text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20091112

2010-12-31 [PG25 GB] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: GB

- Free text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20091112

2010-11-30 [PG25 DE] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: DE

- Free text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20100601

2010-10-29 [PG25 FR] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

- Ref Country Code: FR

- Free text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

- Effective date: 20091130

2010-08-27 [REG FR ST] NOTIFICATION OF LAPSE

- Effective date: 20100730

2010-07-28 [GBPC] GB: EUROPEAN PATENT CEASED THROUGH NON-PAYMENT OF RENEWAL FEE

- Effective date: 20091112

2009-06-30 [PGFP GB] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: GB

- Payment date: 20081119

- Year of fee payment: 13

2009-04-30 [PGFP FR] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: FR

- Payment date: 20081117

- Year of fee payment: 13

2009-03-31 [PGFP IT] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: IT

- Payment date: 20081120

- Year of fee payment: 13

2009-01-30 [PGFP DE] POSTGRANT: ANNUAL FEES PAID TO NATIONAL OFFICE

- Ref Country Code: DE

- Payment date: 20081210

- Year of fee payment: 13

2002-01-01 [REG GB IF02] EUROPEAN PATENT IN FORCE AS OF 2002-01-01

2001-02-21 [26N] NO OPPOSITION FILED

2000-07-07 [ET] FR: TRANSLATION FILED

2000-05-12 [ITF] IT: TRANSLATION FOR A EP PATENT FILED

- Owner name: DE DOMINICIS & MAYER S.R.L.

2000-04-13 [REF] CORRESPONDS TO:

- Document: DE 59604627 20000413

2000-03-29 [GBT] GB: TRANSLATION OF EP PATENT FILED (GB SECTION 77(6)(A)/1977)

- Effective date: 20000308

2000-03-08 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: B1

- Designated State(s): DE FR GB IT

1999-05-06 [17Q] FIRST EXAMINATION REPORT

- Effective date: 19990318

1998-10-14 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19980507

1998-10-14 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): DE FR GB IT