Adaptive membrane structure with insertable protrusions

Details Adaptive membrane structure with insertable protrusions Adaptive membrane structure with insertable protrusions

2005-04-29

2009-12-01

Watkins, III, William P (Department: 1794)

Stock material or miscellaneous articles

Structurally defined web or sheet

Including aperture

C428S138000, C428S139000, C002S457000, C251S333000, C251S331000, C251S334000, C251S904000, C251S129060

Reexamination Certificate

active

07625624

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.

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Baker et al., Membrane Technology, Encyclopedia of Polymer Science and Technology, 3rdEdition, pp. 184-248, 2003.

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