发明名称 METHOD FOR MAKING A TUBULAR TRELLISED PLANAR STRUCTURE FOR PRODUCING A BUILDING FRAMEWORK ELEMENT AND IN PARTICULAR A TRUSS OR A PURLIN
摘要 <p>The invention concerns a method for making a tubular trellised structure (5) comprising chord members (3) interconnected by spacers (4), for making a building framework and in particular a truss (1, 6). The invention is characterized in that the spacers are produced continuously from a slender profiled section (14) which has been folded at several points, and forming a trellis, each of the successive folded parts producing a new spacer with specific length and orientation, adapted in dimension and orientation to its position in the geometry of the structure.</p>
申请公布号 WO2003070395(P1) 申请公布日期 2003.08.28
申请号 FR2003000574 申请日期 2003.02.21
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