Curved screens for projecting motion picture films or the like
First Claim
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1. A PROJECTION SCREEN COMPRISING A SERIES OF INDIVIDUAL PANELS, EACH PANEL COMPRISING A SECTIONAL MEMBER HAVING LONGITUDINAL EDGES PROVIDED WITH COMPLEMENTARY POSITIONING MEANS SAID SECTIONAL MEMBER BEING FORMED WITH A PLURALITY OF INTEGRAL LONGITUDINAL RIBS, EACH RIB HAVING A LIGHT-DIFFUSING FRONT FACE, SAID FRONT FACES TOGETHER CONSTUTING A SINGLE CURVED PROJECTION SURFACE AND BEING SUBSTANTIALLY PARALLEL TO A DIRECTION PERPENDICULAR TO THE PROJECTION AXIS THROUGHOUT THE SCREEN SURFACE, SAID SECTIONAL MEMBER FURTHER COMPRISING TWO REARWARD SIDE LUGS PAR-
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1 Claim
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1. A PROJECTION SCREEN COMPRISING A SERIES OF INDIVIDUAL PANELS, EACH PANEL COMPRISING A SECTIONAL MEMBER HAVING LONGITUDINAL EDGES PROVIDED WITH COMPLEMENTARY POSITIONING MEANS SAID SECTIONAL MEMBER BEING FORMED WITH A PLURALITY OF INTEGRAL LONGITUDINAL RIBS, EACH RIB HAVING A LIGHT-DIFFUSING FRONT FACE, SAID FRONT FACES TOGETHER CONSTUTING A SINGLE CURVED PROJECTION SURFACE AND BEING SUBSTANTIALLY PARALLEL TO A DIRECTION PERPENDICULAR TO THE PROJECTION AXIS THROUGHOUT THE SCREEN SURFACE, SAID SECTIONAL MEMBER FURTHER COMPRISING TWO REARWARD SIDE LUGS PAR-
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Current AssigneeJules Hourdiaux
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Original AssigneeJules Hourdiaux
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InventorsJULES HOURDIAUX
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Application NumberUS04/577,731Time in Patent Office412 DaysField of SearchUS Class Current359/451CPC Class CodesG03B 21/58 collapsible, e.g. foldable;...
