Trough reflector

Details Trough reflector Trough reflector

1976-04-30

1978-10-10

Evans, F. L.

Stoves and furnaces

Stoves

Cooking

126270, 126271, 350295, 350320, G02B 510

Patent

active

041193652

ABSTRACT:
A method for making a large trough reflector of cylindrical shape comprises the step of exerting twisting moments on the opposing longitudinal edges of a flexible reflective sheet. The twisting moments are exerted in equal but opposite increments until the shape of the reflector is governed mainly by the twisting moments, rather than any end loading forces which, acting in the plane of the longitudinal edges of the sheet, would tend to push together or separate the edges of the sheet. Also disclosed is a trough reflector manufactured according to such method.

REFERENCES:
patent: 1946184 (1934-02-01), Abbot
patent: 1951404 (1934-03-01), Goddard
patent: 4022523 (1977-05-01), Lindonnen et al.

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