Global Patent Index - EP 1023527 A1

EP 1023527 A1 2000-08-02 - EXHAUST VALVE FOR INTERNAL COMBUSTION ENGINES

Title (en)

EXHAUST VALVE FOR INTERNAL COMBUSTION ENGINES

Title (de)

AUSLASSVENTIL FÜR BRENNKRAFTMASCHINEN

Title (fr)

SOUPAPE D'ECHAPPEMENT POUR MOTEURS A COMBUSTION INTERNE

Publication

EP 1023527 A1 (EN)

Application

EP 98941935 A

Priority

  • NO 9800254 W
  • NO 973949 A

Abstract (en)

[origin: WO9910630A1] An exhaust valve for internal combustion engines comprises a cylindrical valve stem (1) with a longitudinal cooling duct (2), and a circular, substantially disc-shaped head (3) securely connected to the valve stem (1), the head (3) having at least one cooling duct (4) which extends from the bottom (5) of the valve stem's cooling duct (2) to an outlet (6) on the head's surface (7), in order to conduct coolant through the valve stem (1), through the head (3) to exhaust gases from the engine. In the valve stem's cooling duct (2) there is inserted a cross section-reducing insert (8).

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

F01L 3/16

IPC 8 full level (invention and additional information)

F01L 3/16 (2006.01)

CPC (invention and additional information)

F01L 3/16 (2013.01)

Citation (search report)

See references of WO 9910630A1

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

WO 9910630 A1 19990304; AU 9008898 A 19990316; CA 2302348 A1 19990304; CN 1277654 A 20001220; EP 1023527 A1 20000802; JP 2001516833 A 20011002; NO 306074 B1 19990913; NO 973949 A 19990301; NO 973949 D0 19970827

INPADOC legal status


2002-08-07 [18R] REFUSED

- Effective date: 20020313

2001-10-24 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20010911

2000-08-02 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000403

2000-08-02 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

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