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Ventilation > Having Both Inlet And Outlet Airways > Natural Ventilation Including Air Passage Through Rooftop (i.e., No Air Pump) Natural Ventilation Including Air Passage Through Rooftop (i.e., No Air Pump)Natural Ventilation Including Air Passage Through Rooftop (i.e., No Air Pump) patent applications listed are from June 2005 to current and include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.02/22/07 - 20070042704 - Tubular membrane vent An air permeable sealed enclosure is provided. The enclosure includes a membrane vent adapted to mount through a wall of the enclosure, the membrane vent comprising a tubular membrane, a tubular structural support, wherein the tubular membrane is stretched over the tubular structural support, an air vent fitting attached to ... 02/01/07 - 20070026789 - Alternative geometry ridge vent louvers Irregular shaped louvers, such as chevron or curved shape louvers, on the sides of a roof ridge vent panel provide increased surface area and great Net Free Area values within a given space. ... ### FreshPatents.com Support |