W. L. Gore & Associates, Inc.

Zachary E Lampert

Wayne M Gibbons

Yitian Zhang

Scott J Zero

Theresa Tonge

Water impermeable, air permeable membrane assemblies are described herein. In some embodiments, the assemblies include a polymer membrane and at least one support structure. Certain assemblies are configured to provide an acoustic impedance having phase angle of +45 degrees to &#x2212;45 over a frequency range of 50 to 20,000 Hz.

Acoustically resistive supported membrane assemblies including at least one support structure

An acoustic protective cover assembly can include a retracted membrane material traversing across an acoustic pathway defined by an opening in a housing. The retracted membrane material can include a fibril structure characterized by serpentine fibrils.

Acoustic protective cover assembly containing a retracted membrane material

Water impermeable, air permeable membrane assemblies are described herein. In some embodiments, the assemblies include a polymer membrane and at least one support layer. Certain assemblies are configured to provide an acoustic impedance having phase angle of +45 degrees to &#x2212;45 over a frequency range of 50 to 20,000 Hz.

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Newark, DE, United States of America

Zachary E Lampert