Tappet for a valve drive of an internal combustion engine

Details Tappet for a valve drive of an internal combustion engine Tappet for a valve drive of an internal combustion engine

1996-08-13

1997-09-09

Lo, Weilun

Internal-combustion engines

Poppet valve operating mechanism

Tappet

123 9055, 74569, F01L 116, F01L 124

Patent

active

056645309

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.

REFERENCES:
patent: 5239953 (1993-08-01), Shida
patent: 5320074 (1994-06-01), Schultz et al.
patent: 5379730 (1995-01-01), Schaeffler
Simpson, Frank R., Joining Thin-walled Parts by Rubber Forming. In: Machinery, Oct. 1, 1954, vol. 85, S. 709-714.
JP4-246211(A) , In: Patents Abstracts of Japan, M-1353, Sep. 1992, vol. 17, No. 21.

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