Tappet for a valve drive of an internal combustion engine
AssigneeINA Walzlager Schaeffler KG
InventorsReinhard Ammon, Wilfried Huber
Life of this patent
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Abstract
A tappet (1) for a valve drive of an internal combustion engine, which tappet (1) is guided for axial displacement in a reception bore of a cylinder head by a skirt (3) and is closed by a bottom (4) at a cam-proximate end, the skirt (3) comprising a first bush-like section (6) and a second bush-like section (7) of approximately equal diameter separated from each other preferably in a region of a central transverse plane, the first section (6) being connected to the bottom (4), while the second section (7) proceeds longitudinally from the first section (6), characterized in that the hardened first bush-like section (6) is connected to the unhardened second bush-like section (7) by interlocking and a method and apparatus for its preparation.
Claims8
A tappet (1) for a valve drive of an internal combustion engine, said tappet (1) is guided for axial displacement in a reception bore of a cylinder head by a skirt (3) and is closed by a bottom (4) at a cam-proximate end, the skirt (3), comprising a first hardened bush-like section (6) and a second unhardened bush-like section (7) of approximately equal diameter separated from each other in a region of a central transverse plane of the tappet, the first section (6) being connected to the bottom (4), while the second section (7) proceeds longitudinally from the first section (6), characterized in that the hardened first bush-like section (6) is connected to the unhardened second bush-like section (7) by interlocking.
Dependencies are inferred from the claim text.