Device for maintaining flexible support vertical and tight comprises hollow tubes, wooden junction pieces, wooden bars connected by resilient system and flexible sheet

摘要

The device comprises four hollow composite material tubes (1/1,1/2,1/3,1/4), two wooden drilled and machined junction pieces (1,2), two drilled and machined wooden bars (3/1,3/2) connected by a resilient system (4,5) and a flexible sheet (6). The junction pieces and the hollow tubes are glued (7) together and the resilient system slides inside the hollow tubes.