ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,442,162, issued on Oct. 14, was assigned to VONROLL INFRATEC (INVESTMENT) AG (Emmenbrucke, Sweden).
"Hydrant valve system, and hydrant having such a system" was invented by Sascha Wenger (Oensingen, Switzerland).
According to the abstract* released by the U.S. Patent & Trademark Office: "A hydrant valve system having a hydrant main valve with a main valve body and a valve seat where the main valve body can be moved axially in relation to the valve seat, and a housing that defines a clearance volume into which the main valve body can be moved. The hydrant valve system also has a sealing body that is provided in the clearance volume where the sealing body has a higher density than wate...