Patent ID: 8739750

Claim:
Mechanical bucket tappet ( 1 ) for a valve driver of an internal combustion engine having a hollow cylinder-shaped wall ( 2 ) which is delimited at one frontal area ( 3 ) by a disk-shaped bottom ( 4 ) whose top side ( 5 ) is provided as a cam stop face and which comprises a central, funnel-shaped recess ( 6 ), wherein a dome-shaped one-piece catch ( 8 ) aligned with the recess ( 6 ) projects from a lower side ( 7 ) of the bottom ( 4 ), the underside ( 9 ) of said catch being used for putting on a valve stem, characterized in that the funnel-shaped recess ( 6 ) is sealed near or at the top side ( 5 ) of the bottom ( 4 ), so that the bottom ( 4 ) comprises a central encasement ( 10 ) and characterized in that the seal of the recess ( 6 ) is represented with a neck-shaped construction of its inner wall ( 11 ).