Global Patent Index - EP 1053388 A1

EP 1053388 A1 2000-11-22 - LIGHTWEIGHT VALVE

Title (en)

LIGHTWEIGHT VALVE

Title (de)

LEICHTBAUVENTIL

Title (fr)

SOUPAPE LEGERE

Publication

EP 1053388 A1 (DE)

Application

EP 99908830 A

Priority

  • DE 19804053 A
  • EP 9900561 W

Abstract (en)

[origin: DE19804053A1] The invention relates to a hollow-stem valve for an internal combustion engine. Said valve has a ratio of wall thickness to stem diameter of less than 1:3. The aim of the invention is to minimise the deformation of the valve head. To this end, the valve disk rests directly against the stem.

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

F01L 3/02; F01L 3/04

IPC 8 full level (invention and additional information)

F01L 3/02 (2006.01); F01L 3/04 (2006.01); F01L 3/12 (2006.01); F01L 3/20 (2006.01)

CPC (invention and additional information)

F01L 3/12 (2013.01); F01L 3/02 (2013.01); F01L 3/04 (2013.01); F01L 3/20 (2013.01); Y10T 29/49307 (2013.01)

Citation (search report)

See references of WO 9940295A1

Designated contracting state (EPC)

CH DE FR GB IT LI

EPO simple patent family

DE 19804053 A1 19990805; AR 018055 A1 20011031; BR 9908554 A 20011030; EP 1053388 A1 20001122; EP 1053388 B1 20031210; EP 1359292 A1 20031105; JP 2002502928 A 20020129; JP 4282900 B2 20090624; US 6354258 B1 20020312; WO 9940295 A1 19990812

INPADOC legal status


2017-08-11 [REG DE R084] DECLARATION OF WILLINGNESS TO LICENCE

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2004-12-01 [26N] NO OPPOSITION FILED

- Effective date: 20040913

2004-09-24 [ET] FR: TRANSLATION FILED

2004-09-15 [REG CH PL] PATENT CEASED

2004-02-11 [GBT] GB: TRANSLATION OF EP PATENT FILED (GB SECTION 77(6)(A)/1977)

- Effective date: 20040118

2004-01-31 [PG25 CH] LAPSED IN A CONTRACTING STATE ANNOUNCED VIA POSTGRANT INFORM. FROM NAT. OFFICE TO EPO

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2004-01-22 [REF] CORRESPONDS TO:

- Document: DE 59908022 P 20040122

2003-12-15 [REG CH EP] ENTRY IN THE NATIONAL PHASE

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2003-12-10 [REG GB FG4D] EUROPEAN PATENT GRANTED

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2003-03-19 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20030204

2000-11-22 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000706

2000-11-22 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): CH DE FR GB IT LI