Tappet for an IC engine

Details Tappet for an IC engine Tappet for an IC engine

1995-03-10

1996-07-23

Cuda, Irene

Metal working

Method of mechanical manufacture

Prime mover or fluid pump making

123 9051, B23P 1500

Patent

active

055377440

ABSTRACT:
A tappet in a direct acting type valve operating mechanism of an internal combustion engine comprises a top wall and a cylindrical portion. The upper and lower surfaces of the top wall contacts a rotary cam and the end of a stem of an engine valve respectively. A hard metal layer is formed at the upper and lower surfaces of the top wall to increase strength thereof, thereby increasing wear resistance and durability of the tappet.

REFERENCES:
patent: 3683876 (1972-08-01), Lesher
patent: 4230491 (1980-10-01), Behnke
patent: 4768476 (1988-09-01), Behnke et al.
patent: 4852531 (1989-08-01), Abkowitz et al.
patent: 4873150 (1989-10-01), Doi et al.
patent: 5001019 (1991-03-01), Ito et al.
patent: 5060607 (1991-10-01), Taniguchi
patent: 5168841 (1992-12-01), Suzuki et al.
patent: 5226977 (1993-07-01), Kitaguchi et al.

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