Adaptive membrane structure with insertable protrusions
AssigneeE.I. du Pont de Nemours and Company
InventorsJoseph Trentacosta, Vivek Kapur
Life of this patent
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Abstract
The present invention relates to a porous adaptive membrane structure that has movable membranes. The structure can be made to change its gas, liquid or particulate permeability in response to surrounding environmental conditions. The application of this invention is includes protective apparel that is comfortable to wear wherein the level of protection provided is based on conditions in the environment. Hence, the protective apparel is highly breathable and comfortable in a non-hazardous environment but impermeable or only semipermeable in a hazardous environment.
Claims22
An adaptive membrane structure comprising a first membrane having holes, a second membrane having protruding members, and means responsive to an actuating stimulus that moves one membrane toward the other membrane, wherein the protruding members are positioned on the second membrane to be insertable in the holes on the first membrane when one membrane is moved toward the other.
Dependencies are inferred from the claim text.