ALEXANDRIA, Va., May 5 -- United States Patent no. 12,616,342, issued on May 5, was assigned to GOJO Industries Inc. (Akron, Ohio).
"Compact multi-chamber foam-at-a-distance pumps and dispensers" was invented by Stephen Casteel (Canal Fulton, Ohio), Nick E. Ciavarella (Seven Hills, Ohio) and John J. McNulty (Broadview Heights, Ohio).
According to the abstract* released by the U.S. Patent & Trademark Office: "Exemplary compact multi-chamber diaphragm pumps and dispensers for dispensing foam soap or sanitizer are disclosed herein. An exemplary pump for pumping soap or sanitizer and air separately to be mixed remote from the pump and dispensed as a foam includes a liquid pump diaphragm and a dual flapper valve, wherein a first of the dual fl...