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Rooftop vent for reducing pressure under a membrane roof

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dc.contributor.assigneeVirginia Tech Intellectual Properties, Inc.en
dc.contributor.inventorTelionis, Demetri P.en
dc.contributor.inventorJones, James R.en
dc.contributor.inventorVlachos, Pavlosen
dc.contributor.inventorGrant, Elizabeth J.en
dc.contributor.inventorRullan, Joseen
dc.contributor.inventorJohnson, Charles S.en
dc.date.accessed2016-08-19en
dc.date.accessioned2016-08-24T17:54:54Zen
dc.date.available2016-08-24T17:54:54Zen
dc.date.filed2005-07-11en
dc.date.issued2009-10-27en
dc.description.abstractMembrane roofs are susceptible to damage in high winds. Wind can lift a membrane roof from a building and cause it to tear or become damaged. The present roof vent prevents liftoff and damage by reducing the air pressure under the membrane during high winds. The present roof vent has two opposed convex domes separated by a gap. Wind blowing across the roof flows between the domes where it accelerates and creates a region of low pressure according to the Venturi effect. The lower dome has an opening at the gap so that the low pressure is applied to the space under the membrane roof. Therefore, when wind blows across the roof, the vent draws air from under the membrane and the membrane is pressed against the roof, preventing liftoff.en
dc.format.mimetypeapplication/pdfen
dc.identifier.applicationnumber11177492en
dc.identifier.patentnumber7607974en
dc.identifier.urihttp://hdl.handle.net/10919/72621en
dc.identifier.urlhttp://pimg-fpiw.uspto.gov/fdd/74/079/076/0.pdfen
dc.language.isoen_USen
dc.publisherUnited States Patent and Trademark Officeen
dc.subject.cpcE04D5/14en
dc.subject.cpcE04D13/17en
dc.subject.uspc454/364en
dc.subject.uspcother454/365en
dc.subject.uspcother52/199en
dc.titleRooftop vent for reducing pressure under a membrane roofen
dc.typePatenten
dc.type.dcmitypeTexten
dc.type.patenttypeutilityen

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