Cup tappet for an internal combustion engine

Details Cup tappet for an internal combustion engine Cup tappet for an internal combustion engine

2007-01-09

2007-01-09

Chang, Ching (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

Tappet

C123S090480, C074S569000

Reexamination Certificate

active

11285608

ABSTRACT:
The invention relates to a cup tappet for an internal combustion engine, having a skirt which has a radial recess, into which an anti-rotation element (6) is inserted. The anti-rotation element protrudes from the skirt in the radial direction, in order to be accommodated in a corresponding groove of the cylinder head as an anti-rotation safeguard.According to the invention, the anti-rotation element (6) has an outer contour in longitudinal section with a head (20) and a stem (21). The stem has a reduced dimension compared with the head (20) and a thickened portion (32), and can be clipped into the recess of the skirt of the cup tappet under elastic deformation of the thickened portion (32).In this way, an anti-rotation safeguard is possible which can be assembled particularly simply, can be manufactured cheaply and is reliable.

REFERENCES:
patent: 5823151 (1998-10-01), Elendt et al.
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patent: 196 80 280 (2001-11-01), None
patent: 101 10 914 (2002-09-01), None
patent: 101 23 963 (2002-11-01), None
patent: WO 2005/019608 (2005-03-01), None

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