Tappet in an internal combustion engine and a method of manufact

Details Tappet in an internal combustion engine and a method of manufact Tappet in an internal combustion engine and a method of manufact

1996-05-06

1997-02-25

Lo, Weilun

Internal-combustion engines

Poppet valve operating mechanism

Tappet

74569, 2988843, F01L 116

Patent

active

056051220

ABSTRACT:
A tappet is used in an internal combustion engine of vehicles. A core material of the tappet has a helical groove on the outer circumferential surface, and a wear resistant coating layer the ends of which are chamfered. In the vicinity of the end of the core material, the helical groove gradually becomes smaller toward the end, thereby preventing peaks of the helical groove from exposure to the outside.

REFERENCES:
patent: 3058454 (1962-10-01), Goncalves
patent: 3279446 (1966-10-01), Rappa
patent: 4909198 (1990-03-01), Shiraya et al.
patent: 5228418 (1993-07-01), Doehring
patent: 5280771 (1994-01-01), Groh et al.

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