Provision for the practicable retention of screens in lighting ceiling (Machine-translation by Google Translate, not legally binding)

摘要

Arrangement for the practicable retention of screens in lighting panels, the screen having its mouth flared, the retention is made by a series of angular projections provided in the ceiling, of which at least one is removable by displacement that allows the introduction/extraction of the embouchure, and such projection being found under the pressure of a spring that tends to keep it applied against the embouchure. (Machine-translation by Google Translate, not legally binding)