| 摘要 |
PCT No. PCT/GB88/00075 Sec. 371 Date Aug. 8, 1989 Sec. 102(e) Date Aug. 8, 1989 PCT Filed Feb. 9, 1988 PCT Pub. No. WO88/05850 PCT Pub. Date Aug. 11, 1988.The disclosure relates to a hollow section elongated structural member comprising three parallel spaced channel section elements (13) with three panels (11) extending between the respective pairs of elements to form a hollow section member. The edges of the panels have edge formations (17) which are received in the channels, each edge formation being shaped to conform to a side wall (15) and adjacent base part (14) of a channel. Clamping members (18) are provided for each channel having a clamping face including a main part (19) flanked by said faces (21) to act in co-operation with the base and side wall of the channel (13) to clamp the respective edge formations of a pair of panels therein and screws (23) are provided for securing the clamping members to the channel to lock the edge parts of the channels in the channels and thereby create a rigid structue between the channels and panels. The arrangement is particulary suitable for lightweight structural members for frameworks to be used in supporting equipment such as lighting or other electrical apparatus, display devices, screens or the like, or for supporing canopies, roofing or walling.
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