Patent ID: 8615966
Filing Date: 2013-12-31
Classification: A63B,A63H,E04H,Y10T

Abstract:
1. A method of producing a structure transformable by inflation from a collapsed condition for storage to an erect condition for use, the structure comprising an inflatable tubular framework that, when inflated, supports the structure in an erect condition, and at least one flexible web attached to and extending between two or more regions of said inflatable framework, the method comprising: fabricating an outer sleeve arrangement of flexible but substantially non-elastic material by cutting and stitching said material to a sleeve configuration that includes at least one bifurcation; separately fabricating an inner inflatable tubular element of flexible, elastic, air-impermeable material by cutting and bonding the air-impermeable material to provide a continuous inflatable compartment having a configuration including at least one bifurcation, matching the configuration of the outer sleeve arrangement, and having an inflation valve; and inserting the inner tubular element into the outer sleeve arrangement and feeding it through the outer sleeve arrangement so that, upon inflation, the inner tubular element substantially fills the outer sleeve arrangement.