Two-piece piston assembly

Details Two-piece piston assembly Two-piece piston assembly

1989-10-20

1992-05-26

Dolinar, Andrew M.

Expansible chamber devices

Piston

Open-ended hollow skirt type

1231936, 92190, 92238, F02F 300

Patent

active

051157268

ABSTRACT:
A two-piece, or articulated, piston assembly for internal combustion engines, comprising a head composed of a top portion and a pair of pin bosses integral with it, a skirt portion, and a wrist pin mounted in the pin boss holes. The pin bosses are secured to a member restraining lateral deformation of the pin bosses. The restraining member may be the wrist pin itself, or defined by a cylindrical hollow pin fastened to the pin boss holes and housing the wrist pin. The thus formed structure prevents deformation of the pin bosses toward the cylinder liner, thereby imparting a higher strength to the piston assembly.

REFERENCES:
patent: 4013057 (1977-03-01), Guenther
patent: 4358881 (1982-11-01), Mahrus et al.
patent: 4811654 (1989-03-01), Rosch

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