Inflatable mold construction for sale or licensing Summary of Patents:
United States Patent 5,339,574
The present invention utilizes flexible inflatable mold materials with at least two layers of materials to form at least one airtight cavity therebetween. In a first embodiment, an inflatable mold is used to create a habitation. The habitation could be used in space. The mold preferably has at least three layers of mold material forming two airtight cavities around an innermost cavity. The mold may be in the shape of a cylinder.
A first outermost cavity of the mold is blown up with pressurized gas. An innermost flexible wall layer surround an innermost cavity. Constraints between the middle layer and outermost layer are provided in order to expand the middle layer when the outermost cavity is filled with pressurized gas. Constraints between the middle layer and innermost layer expand the innermost cavity. A hatch opening at one end of the cylinder allows access to the inner most cavity. Means to attach constraints inside this inner most cavity are provided on the inner wall of the third layer of material so that further constraints can be added once the mold is blown up. These constraints could be place within the inne...
