Cup tappet of a valve train of an internal combustion engine

Details Cup tappet of a valve train of an internal combustion engine Cup tappet of a valve train of an internal combustion engine

2006-12-05

2006-12-05

Chang, Ching (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

Tappet

C123S090500, C123S090440

Reexamination Certificate

active

07143731

ABSTRACT:
The invention proposes a cup tappet (1) of a valve train of an internal combustion engine, said cup tappet (1) comprising a hollow cylindrical skirt (3) closed at one end by a bottom (2), said bottom (2) comprising an outer end surface (4) and an inner end surface (6), said outer end surface (4) comprising a contact surface (5) for a cam and said inner end surface (6) comprising a central support (7) for a gas exchange valve, wherein the inner end surface (6) of the bottom (2) comprises a radially extending flat web (8), the support (7) is arranged symmetrically between edges (9, 19) of the web (8), a leg (11, 12) sloping away from the bottom (2) after the manner of a roof extends from each edge (9, 10) up to an inner surface (13) of the skirt (3), and the legs (11, 12) are situated axisymmetrically opposite each other. This cup tappet (1) thus possesses a particularly good rigidity.

REFERENCES:
patent: 5904123 (1999-05-01), Ammon et al.
patent: 691 03 613 (1994-12-01), None
patent: 62045911 (1987-02-01), None
patent: 06221118 (1994-08-01), None

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