Method of forming a parabolic trough

Details Method of forming a parabolic trough Method of forming a parabolic trough

1978-10-02

1980-12-02

Larson, Lowell A.

Metal deforming

By use of non-deforming work-gripping clamp and relatively...

By individually non-deforming clamps

72298, 72377, 113116J, 148131, B21D 1120

Patent

active

042363993

ABSTRACT:
Solar parabolic reflecting troughs are formed from long strips of sheet metal by applying equal bending moments to each long edge of the strip to draw the metal into a parabolic shape. While maintaining the metal in parabolic form, the trough is stress relieved by heating.

REFERENCES:
patent: 1058590 (1913-04-01), Hunker
patent: 1937663 (1933-12-01), Norton
patent: 2095533 (1937-10-01), Schmidt
patent: 2724669 (1955-11-01), Quirolo et al.
patent: 3004584 (1961-10-01), Fuchs et al.
patent: 3490405 (1970-01-01), Reader et al.
patent: 3585836 (1968-08-01), Tate et al.
patent: 3761322 (1973-09-01), Winter et al.
patent: 3887976 (1975-06-01), Sheilds
patent: 3975816 (1976-08-01), Carter

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