| 摘要 |
A portable structure for use in building pipelines and the like including an inflatable flexible elongated structure having sides and open ends, support track means operably engaged with each side of said structure and extending the structure length, and a plurality of anchor means or assemblies thereof, each including a device to engage the track means, a part of the anchor means engaging the ground to hold the structure against vertical upward movement, but permitting relative movement between the track means and the anchor means so that the structure can be operatively positioned by the anchor means but be movable in relation thereto.
|
