ALEXANDRIA, Va., Nov. 18 -- United States Patent no. 12,473,236, issued on Nov. 18, was assigned to RTX Corp. (Farmington, Conn.).
"Internal tooling configuration for the creation of z-channels in woven ceramic matrix composite preforms" was invented by Robin H. Fernandez (East Haddam, Conn.), John D. Riehl (Hebron, Conn.) and Molly Kole (Hartford, Conn.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A tooling assembly for use in forming z-channels in a fibrous ceramic preform includes a mandrel having a first plurality of holes extending into a mandrel body, a first subset of the plurality of holes being through-holes extending completely through the mandrel, and a second subset of the holes comprising blin...