Patent 10543617 was granted and assigned to Caterpillar Inc. on January, 2020 by the United States Patent and Trademark Office.
A method for forming three-dimensional (3D) printed structures is disclosed. The method may include 3D printing a first structural member including an opening to a cavity inside the first structural member; and 3D printing a second structural member including a protrusion disposed within the opening and the cavity of the first structural member.