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Article: Michgan, New York Inventors Develop Fuel Line Checking Valve
- Article from:
- US Fed News Service, Including US State News
- Article date:
- July 27, 2007
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ALEXANDRIA, Va., July 27 -- William L. Villaire of Clio, Mich., Dennis P. McGrath of Ortonville, Mich., John G. Fischer of Goodrich, Mich., and David H. Burke of Victor, N.Y., have developed a fuel line checking valve.
According to the U.S. Patent & Trademark Office: "Prior art fuel line check valves remain closed after engine off and cool down. Diurnal heating and the resultant pressure increase in the fuel line causes fuel vapor emissions through small openings in the fuel line (e.g., at the injector tips)."
An abstract of the invention, released by the Patent Office, said: "The invention provides a check valve for a vehicle fuel line which opens in response to engine cooling and ...