EP 2078831 A2 20090715 - Surface treated rocker arm shaft
Title (en)
Surface treated rocker arm shaft
Title (de)
Oberflächenbehandelter Kipphebelschaft
Title (fr)
Gaine de culbuteur à surface traitée
Publication
Application
Priority
US 1993608 P 20080109
Abstract (en)
A shaft (2, 19, 24, 124, 224) for a rocker arm assembly (1, 20, 120, 220) is disclosed. The shaft includes a substantially cylindrical outer surface (26, 126, 226) at least a portion (29, 129, 229) of which defines a bearing surface (28, 128, 228) thereon and an interior core portion (32, 132, 232) located radially inward of the bearing surface. The bearing surface (28, 128, 228) has a hardness greater than that of the core portion (32, 132, 232), for providing wear resistance and deterring crack initiation and propagation.
IPC 8 full level
F01L 1/053 (2006.01); F01L 1/18 (2006.01)
CPC (source: EP US)
F01L 1/053 (2013.01 - EP US); F01L 1/18 (2013.01 - EP US); F01L 2301/00 (2020.05 - EP US); F01L 2303/00 (2020.05 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA RS
DOCDB simple family (publication)
EP 2078831 A2 20090715; EP 2078831 A3 20110824; US 2009173301 A1 20090709
DOCDB simple family (application)
EP 09150266 A 20090109; US 34803209 A 20090102