Metal working – Method of mechanical manufacture – Shaping by direct application of fluent pressure
Patent
1974-06-17
1976-04-27
Larson, Lowell A.
Metal working
Method of mechanical manufacture
Shaping by direct application of fluent pressure
101375, 264328, B23P 1700
Patent
active
039523977
ABSTRACT:
A print wheel of the type employed in business machines is formed by positioning a ring-shaped metal blank in a die and forcing fluid plastic under pressure against the ring thereby causing the metal to flow into the characters provided in the die and to assume their shape.
REFERENCES:
patent: 2158044 (1939-05-01), Haller
patent: 2673373 (1954-03-01), Heuer
patent: 2770874 (1956-11-01), Lindow
patent: 2978751 (1961-04-01), Bright
patent: 3166831 (1965-01-01), Keith
patent: 3446107 (1969-05-01), Moyer
patent: 3553809 (1971-01-01), Yamada et al.
patent: 3693544 (1972-09-01), Trzyna
Friedman Norman
Larson Lowell A.
Litton Business Systems Inc.
Roen Stephen A.
Rotella Robert F.
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