US Patent Issued to VAT Holding on Jan. 28 for "Valve plate for a closure device for closing an opening in a wall in a vacuum-tight manner" (Liechtensteiner, Swiss Inventors)

ALEXANDRIA, Va., Jan. 29 -- United States Patent no. 12,209,688, issued on Jan. 28, was assigned to VAT Holding AG (Haag, Switzerland).

"Valve plate for a closure device for closing an opening in a wall in a vacuum-tight manner" was invented by Fabian Buchel (Buchs SG, Switzerland) and Philipp Wohlwend (Vaduz, Liechtenstein).

According to the abstract* released by the U.S. Patent & Trademark Office: "A valve plate for a closure device for closing an opening in a vacuum-tight manner. A front side of the valve plate has a seal ring for sealing to the wall, and the rear side has a depression for connecting to a valve rod. In regions of two mutually opposite lateral walls of the depression, an extension adjoins in each depression. For each re...