Engine piston

Details Engine piston Engine piston

1993-07-23

1994-07-26

Argenbright, Tony M.

Internal-combustion engines

Particular piston and enclosing cylinder construction

Piston

92239, F02F 302

Patent

active

053319320

ABSTRACT:
A piston skirt has narrowed relief sections adjacent piston bosses and between first and second relief sections. The first relief sections extend between a piston head and respective piston bosses whist the second relief sections extend downward from the respective piston bosses. The narrowed relief sections are spaced from each other in parallel to piston pin holes at a distance which is smaller than that at which the first and second relief sections are space from each other, respectively. The narrowed relief sections are formed thicker and therefore more rigid than the first and second relief sections so that the piston skirt is more rigid adjacent the piston bosses and less rigid above and below the piston bosses, whereby to effectively lessen side thrust of the piston to the cylinder wall without deteriorating the durability.

REFERENCES:
patent: 4715267 (1987-12-01), Richmond
patent: 4756241 (1988-07-01), Sakurahara et al.
patent: 4785774 (1988-11-01), Tokoro et al.
patent: 5063893 (1991-11-01), Iwaya
patent: 5076225 (1991-12-01), Tokoro et al.
patent: 5245913 (1993-09-01), Kato

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