SOMERSET, Ky. (AP) — Don Davis has a patent pending on an energy-saving invention he brainstormed when the local housing market took a nose dive a couple years ago costing him part of his livelihood.
The Bronston electrician explains that a typical ceiling-mounted bathroom exhaust fan has a gravity-activated flapper valve which that is supposed to close when the fan is not running to keep conditioned air from venting outside, and to keep elements like rain and snow, as well as winter cold and summer hot air, from being blown back into the house.
After doing some brainstorming, it dawned on Davis that if a cover was fitted over the exhaust fan when it was not running, thermal leaks could possibly be stopped.
Davis began building prototypes of his concept and eventually contacted the U.S. Patent Office, which now has his patent application and drawings of his bathroom exhaust fan vent cover.
(Copyright 2013 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.)