Tappet in an internal combustion engine and method of manufactur

Details Tappet in an internal combustion engine and method of manufactur Tappet in an internal combustion engine and method of manufactur

1993-03-26

1993-12-14

Cross, E. Rollins

Internal-combustion engines

Poppet valve operating mechanism

Tappet

123 9051, 74569, F01L 114

Patent

active

052692680

ABSTRACT:
A tappet is used in a valve operating mechanism of a direct acting type in an internal combustion engine. A tip engaged with a center bore of an inner upper surface of a tappet body comprises upper and lower convex surfaces and a rounded upper circumferential corner having a certain curvature, thereby preventing concentration of stress even if the tip is subject to high compression load. Thus, durability and reliablity of the tappet are increased.

REFERENCES:
patent: 2891525 (1959-06-01), Moore
patent: 2933949 (1960-04-01), Bouwkamp
patent: 3470983 (1969-10-01), Briggs
patent: 4508067 (1985-04-01), Fuhrmann
patent: 4829950 (1989-05-01), Kanamaru
patent: 4909198 (1990-03-01), Shiraya et al.

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