ALEXANDRIA, Va., April 7 -- United States Patent no. 12,595,861, issued on April 7, was assigned to Franklin Fueling Systems LLC (Madison, Wis.).
"Pressure vacuum valve" was invented by Justin F. Kuehn (Sun Prairie, Wis.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A P/V valve that can be positioned at a working height above grade (i.e., a height reachable by a service technician positioned at grade) while still providing appropriate resistance to fire and explosion by venting to atmosphere at an appropriate height above grade (e.g., 12 feet) is disclosed. In certain exemplifications of the present disclosure, the P/V valve features a diaphragm actuated two-way poppet valve actuatable by a valve piston. In...