Piston for internal combustion engine

Details Piston for internal combustion engine Piston for internal combustion engine

2006-06-27

2006-06-27

Lazo, Thomas E. (Department: 3745)

Expansible chamber devices

Piston

Open-ended hollow skirt type

C092S213000, C092S208000

Reexamination Certificate

active

07066078

ABSTRACT:
By casting a preformed member composed of a fiber reinforced material into a base material of a piston, a pair of crown reinforcing portions corresponding to respective pin boss portions are formed on a crown portion, and the pair of crown reinforcing portions are connected to each other along the piston pin axis by a connecting portion. Thus, the strength of the piston is increased by the crown reinforcing portions, and also, heat distortion of the crown portion is inhibited since the crown reinforcing portions integrally connected to each other by the connecting portion are formed so as to serve as a rigid member extending along the piston pin axis.

REFERENCES:
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patent: 4679493 (1987-07-01), Munro et al.
patent: 4730548 (1988-03-01), Maeda et al.
patent: 4831918 (1989-05-01), Mielke et al.
patent: 4920864 (1990-05-01), Skingle et al.
patent: 4986231 (1991-01-01), Brown
patent: 39 32 562 (1991-04-01), None
patent: 56-167831 (1981-12-01), None
patent: 58-86968 (1983-05-01), None
patent: 01-273859 (1989-11-01), None
patent: 11-285809 (1999-10-01), None

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