| 摘要 |
Apparatus comprising a self-supporting, readily erectable and transportable mast which comprises a pneumatically inflatable elongate tube (4) having a first end (5) to which the equipment is coupled and a second end (6) coupled to a ground support tripod (7). The mast is provided with a bracing structure adapted to brace the tube when inflated and including flexible members (22) extending from each tripod leg to the first end of the tube. The tripod may comprise extendible legs which may be telescopic. The flexible members may comprise a single or multiple ply cord and further flexible members (24) may be provided which may be secured to collars (23) which may be mounted on the inflatable elongate tube. The inflatable elongate tube may be flexible when deflated and substantially inflexible when inflated and may include reinforcing textile strands helically laid between two layers selected from rubber or plastics, etc wherein the textile strands may be laid at an angle to the tubular members of 45{ or more preferably 30{ or less. The elongate tube will preferably be PVC and the textile strands will preferably be nylon. The strands may be woven in opposing senses resulting in a woven textile reinforcing structure and there may be a further layer of reinforcing strands extending parallel to the axis of the tubular member. In use the apparatus may be used to support equipment such as flags, signs, traffic signals, sports equipment, floodlights, loudspeakers, cameras, etc. |
