Apparatus and method for manufacture of curved hollow toroidal e

Details Apparatus and method for manufacture of curved hollow toroidal e Apparatus and method for manufacture of curved hollow toroidal e

1983-03-28

1985-10-29

Goldberg, Howard N.

Metal working

Method of mechanical manufacture

Combined manufacture including applying or shaping of fluent...

164114, 164295, 164289, 164287, B22D 1300, B22D 11126, B22D 1306

Patent

active

045493391

ABSTRACT:
A method and an apparatus for manufacturing a hollow curved member, especially a curved pipe as well as the curved member or pipe produced by the method and apparatus. A blank is formed by rotating fluid material in a mold having a toroidal cavity about an axis displaced a predetermined distance from the mean longitudinal axis of the cavity and solidifying the fluid material. The blank is removed from the mold and a toroidal inner surface is machined into the blank so as to provide a passageway therethrough. In the preferred embodiment, the toroidal cavity is circular in cross-section and has a circular arcuate axis and the inner surface is machined into the blank coaxial with the outer surface of the blank.

REFERENCES:
patent: 3914851 (1975-10-01), Ujiie
patent: 3927450 (1975-12-01), Sommer et al.
patent: 3929182 (1975-12-01), Amado, Jr.

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