Method of making a piston bottom

Details Method of making a piston bottom Method of making a piston bottom

1983-06-10

1985-08-06

Goldberg, Howard N.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

29557, 29558, 29DIG18, 29DIG26, 92220, 92224, 123193P, B23P 1510

Patent

active

045326860

ABSTRACT:
A piston bottom for large capacity internal-combustion engines is made by forging a saucer-shaped blank from refractory-forging steel and then in a second forging step transforming the saucer-shaped blank into a cup configuration with a planar rim of the blank being transformed into a cylindrical shoulder and an annular bulge of the blank being transformed into an annular boss for connecting the piston bottom of the cylindrical body of the piston. The blank has a convexity projecting on one side of the blank opposite that formed with the bulge.

REFERENCES:
patent: 2400503 (1946-05-01), Harper, Jr.
patent: 2539903 (1951-01-01), Gruetjen
patent: 3152523 (1964-10-01), Whitfield
patent: 3222761 (1965-12-01), Sabo
patent: 3235946 (1966-02-01), Neu et al.
patent: 3613521 (1971-10-01), Itano
patent: 3915141 (1975-10-01), ttl et al.
patent: 4083292 (1978-04-01), Goloff

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