ALEXANDRIA, Va., June 17 -- United States Patent no. 12,311,393, issued on May 27, was assigned to Guala Dispensing S.P.A. (Spinetta Marengo, Italy).
"Dispensing head for a trigger dispenser" was invented by Riccardo Alluigi (Alessandria, Italy).
According to the abstract* released by the U.S. Patent & Trademark Office: "A dispensing head for a trigger dispenser includes a frame having a functional zone on which a frame port, a suction outlet port and a dispensing inlet port open. A valve device applied to the functional zone includes a suction shutter and a dispensing shutter that implements a precompression of products before dispensing. The valve device cooperates with a reference plane of the frame to form a precompression chamber ups...