ALEXANDRIA, Va., May 26 -- United States Patent no. 12,638,086, issued on May 26, was assigned to Carmo Holdings APS (Denmark).
"Rotary valve" was invented by Anders Johnsen (Klagshamn, Sweden).
According to the abstract* released by the U.S. Patent & Trademark Office: "A two-component rotary valve for controlling the fluid flow through a fluid conduit, the rotary valve being injection-moulded in two steps with no need for assembly after the injection moulding procedure. The rotary valve comprises a valve house with a plug inside it, and the rotary valve has sealing means in the form of local variations in the radius of the plug and house along their lengths. Thereby, a rotary valve is obtained which does not require a viscous sealant, su...