| 摘要 |
A structure which is transformable by inflation from a collapsed condition for storage to an erect condition for use has an inflatable tubular framework and at least one flexible web attached to and extending between two or more regions of the framework. The inflatable framework is formed by at least one inner inflatable tubular element (A, B) of flexible, elastic, air-impermeable material and having an inflation valve (13,15) accommodated within an outer sleeve arrangement of a material which is flexible but substantially non-elastic and restrained therein upon inflation. The outer sleeve arrangement is configured to include at least one branch point and/or at least one abrupt bend and the configuration of the inner tubular element or elements (A, B) corresponds to that (branch points (a, b) and abrupt bends (z)) so that the inner tube or tubes will substantially fill the outer sleeve arrangement upon inflation. Each inner tube (A, B) is formed by cutting and bonding of the air-impermeable material to provide a continuous inflatable compartment of relevant configuration and is inserted through an opening in the outer sleeve arrangement and fed through so as to fill it when later inflated in use. |
