Patent ID: 11946394
Assignee: ECO HOLDING 1 GMBH
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  B | IPC B  F

Claim 8:
9. A cam phaser for a cam shaft of an internal combustion engine, the cam phaser comprising:
a rotor;
a stator including internal vanes and external drive teeth integrally provided in one piece of metal;
at least one flat annular cover; and
pressure chambers defined between the stator, the internal vanes and the at least one flat annular cover,
wherein the at least one flat annular cover is externally sealed at the stator by a closed circumferential weld along an outer edge of the at least one flat annular cover so that the closed circumferential weld bonds the at least one flat annular cover to the stator and applies an annular smooth ground axial face without off-center cutouts of the at least one flat annular cover to a ground contact surface of the stator so that the pressure chambers defined between the stator, the internal vanes and the at least one flat annular cover are contact sealed and so that an opposite axial face of the at least one flat annular cover that is opposite to the annular smooth ground axial face without off-center cutouts forms an outer surface of the cam phaser.