Patent ID: 7585211

Claim:
A membrane vent comprising: an air permeable tubular membrane; a tubular structural support adapted to be received by the tubular membrane; an air vent fitting attached to the tubular membrane in an air tight manner at a first end, the air vent fitting including: a connector member, comprising: a first cylindrical section having a portion with a diameter that approximately matches the tubular membrane and is less than the length of the first cylindrical section in the axial direction, the first cylindrical section having a shaped projection comprising a portion with a diameter greater than the diameter of the first cylindrical section, and a second cylindrical section, the second cylindrical section having a diameter substantially equal to an inner diameter of the tubular structural support, wherein the connector member is inserted into the tubular membrane in such manner that the shaped projection of the first cylindrical section expands the tubular membrane in the air tight manner; and an end cap attached to the tubular membrane in an air tight manner at a second end.