ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,421,976, issued on Sept. 23, was assigned to RTX Corp. (Farmington, Conn.).
"Root block design for composite fan blade" was invented by Thomas Robertson (Glastonbury, Conn.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A root block design for a composite fan blade including first side plies attached to second side plies to form the composite fan blade, the composite fan blade comprising a blade tip opposite a root portion; a first wedge in operative communication with the first side plies proximate the root portion; and a second wedge in operative communication with the second side plies proximate the root portion; wherein each of the first wedge and ...