| 摘要 |
A vertically suspended foil structure for sound muffling and light scattering false ceilings comprises a grid of U-shaped metal crossbeams, resting on longitudinal stringers, and foils attached to one another by a crossbeam engaging device having a spring biassed head for insertion in a hole through a metal plate and a prismatic body whereto a foil is affixed rigidly, each crossbeam having holes through the upper side thereof and mating notches in its wing portions adapted to engage the head in the hole and concurrently snap engage two opposite corners of the crossbeam engaging device in the wing portions. |
