Commonwealth Journal

News Live

August 21, 2013

Inventor gets his ducts in a row

Bronston electrician Don Davis patenting cost-saving bathroom vent cover


Somerset —

“You can typically hear the vent valve flapping in a bathroom when there’re high winds or a storm blowing outside. Every time it opens, conditioned air inside the house is vented to the outside. With energy costs what they are, it’s just like money is being blown out the vent.”
After some exhaustive — no pun intended — brainstorming, it dawned on Davis that if a cover was fitted over the exhaust fan when it was not running, thermal leaks could be stopped in their tracks.
So in his workshop inside an old mobile home, Davis began building prototypes of his concept. With proof of concept in hand, he headed to the U.S. Patent Office which now has his patent application and drawings of his bathroom exhaust fan vent cover.
“The Patent Office is so far behind in processing applications it will probably take another year to finish my application. But in the meantime I can use the phrase ‘Patent Pending’ on anything I manufacture.”
To date all of Davis’ prototypes have been made of wood with metal spring hinges and latches. But he would like to seem his vent covered professionally manufactured in plastic.
“It seems everyone I present the idea to says they have contacts with Chinese factories that will manufacture them. But I have no intention of having it built in China—I want it built in the United States.
“To have injection molds made will cost $35,000, then there’s the manufacturing cost for finished injection-molded plastic product.”
Until he can raise surmount the manufacturing start-up costs, Davis is contenting himself building wooden models in his shop.
“The average householder doesn’t realize that as conditioned household air is leaked to the outside, it creates drafts inside walls that can lead to condensation and eventually mold. My vent cover helps stop that problem too.”
Davis, 44, is the son of Vilda and the late Ernest Davis. He lives on Jacksboro Road in Bronston with his wife, Stephania and children. He not only owns Davis Electrical Contractor, LLC, but also is certified professional building analyst.
If you have questions about Davis’ invention, you can email him at:

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