ALEXANDRIA, Va., March 17 -- United States Patent no. 12,576,485, issued on March 17, was assigned to RTX Corp. (Farmington, Conn.).

"Open-ended wrench with polymer adaptor" was invented by Mario J. Saavedra (Port St Lucie, Fla.) and Caleb S. Gwilliams (Jupiter, Fla.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An open-ended head includes a first head jaw, a second head jaw and a head channel. The first head jaw extends widthwise between a first jaw flat and a first head edge surface. The second head jaw extends widthwise between a second jaw flat and a second head edge surface. The head channel projects lengthwise into the open-ended head. The head channel extends widthwise within the open-ended head betw...