Ceiling system

摘要

A novel decorative ceiling comprising:PP1. A GRID OF T- bar runners and cross members,PP2. A FLAT HORIZONTAL RIGID PLASTIC SHEET, PREFERABLY HAVING A PATTERN OF AREAS TRANSMISSIVE TO LIGHT AND AREAS OPAQUE TO LIGHT, THE EDGES OF WHICH REST ON SAID T-bars, PP3. A SOURCE OF ILLUMINATION IN THE PLENUM ABOVE SAID GRID,PP4. ADHESIVELY JOINED TO SAID SHEET AND EXTENDING DOWNWARDLY FROM TRANSMISSIVE AREAS, A PLURALITY OF PLASTIC CELLS HAVING PLANAR SIDES, SAID CELLS BEING OPEN AT THEIR BOTTOM ENDS, THE PLANAR SIDES OF ADJOINING CELLS BEING SPACED APART BY A DISTANCE AT LEAST EQUAL TO THE WIDTH OF THE HORIZONTAL PORTION OF SAID T- bars.PP Also, the subcombination, adapted to be supported at its edges by T-bars, comprising:PP1. A FLAT HORIZONTAL RIGID PLASTIC SHEET HAVING A PATTERN OF AREAS TRANSMISSIVE TO LIGHT AND AREAS OPAQUE TO LIGHT THE EDGES OF WHICH REST ON SAID T-bars,P P2. ADHESIVELY JOINED TO SAID SHEET AND EXTENDING DOWNWARDLY FROM TRANSMISSIVE AREAS, A PLURALITY OF PLASTIC CELLS HAVING PLANAR SIDES, SAID CELLS BEING OPEN AT THEIR BOTTOM ENDS, THE PLANAR SIDES OF ADJOINING CELLS BEING SPACED APART BY A DISTANCE AT LEAST EQUAL TO THE WIDTH OF THE HORIZONTAL PORTION OF SAID T-bars.