US Patent Issued to Hilti on March 18 for "Device for passing pipes or cables through an opening in a building" (German Inventors)

ALEXANDRIA, Va., March 19 -- United States Patent no. 12,253,200, issued on March 18, was assigned to Hilti AG (Schaan, Liechtenstein).

"Device for passing pipes or cables through an opening in a building" was invented by Mario Paetow (Igling, Germany), Christian Forg (Lamerdingen, Germany), Rudolf Semler (Prittriching, Germany) and Thomas Monden (Stetten, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to a device for passing pipes or cables through an opening in a building. Said device comprises a sleeve-like housing that has an axial passage channel that is open at its opposite ends; bristles that are mounted on the walls of the passage channel in such a way that they are oppo...