Metal working – Method of mechanical manufacture – Prime mover or fluid pump making
Patent
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.
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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.
Cuda Irene
Fuji Oozx Inc.
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