Global Patent Index - EP 0911493 A3

EP 0911493 A3 2000-04-12 - Improved tip structures for an ultra light engine valve

Title (en)

Improved tip structures for an ultra light engine valve

Title (de)

Verbesserte Spitzengestaltung in einem ultraleichten Brennkraftmaschinenventil

Title (fr)

Embout à structure améliorée pour soupape de moteur ultra - légère

Publication

EP 0911493 A3 (EN)

Application

EP 98308461 A

Priority

US 95518897 A

Abstract (en)

[origin: EP0911493A2] An ultra light poppet valve (11) having increased stiffness at its tip end. The valve includes a stem (13) which is formed as a thin-walled, elongated cup member having a closed tip portion (19) and a flared open end (17). To which a disk-like cap member (15) is fixed. The stiffness of the tip is increased by various means including members (43;61) added to the tip portion (19), members (47;49) inserted within the tip portion, hard surfaces (53;53a) deposited on the tip portion, and members (43b;73) inserted within openings (71) in the end of the tip portion. <IMAGE>

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

F01L 3/02; F01L 3/14; F01L 3/20

IPC 8 full level (invention and additional information)

F01L 3/02 (2006.01); F01L 3/14 (2006.01); F01L 3/20 (2006.01); F01L 3/24 (2006.01)

CPC (invention and additional information)

F01L 3/20 (2013.01); F01L 3/02 (2013.01); F01L 3/14 (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

DOCDB simple family

EP 0911493 A2 19990428; EP 0911493 A3 20000412; JP H11210429 A 19990803