Methods for deposition and fabrication of 3D integrated composite structures

US11220044B2 · kind B2 · utility

Assignee

• NORTHROP GRUMMAN SYSTEMS CORPORATION · US

Inventors

• Eric G. Barnes · Rancho Palos Verdes, US
• Pedro A. Gonzalez · Palmdale, US
• Todd L. Szallay · Long Beach, US
• Steven J. Floyd · Monterey Park, US
• Sung S. Park · Rancho Palos Verdes, US
• Brett G. Morham · Manhattan Beach, US
• Cody J. Brown · Edmonds, US
• Reese R. Allen · Bothell, US
• Ryan L. Bischoff · Seattle, US

Key dates

• Filing date: Apr 10, 2019
• Grant date: Jan 11, 2022
• Expiry date: Nov 11, 2039

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B33Y40/00
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

A method for fabricating a composite part using a 3D printing machine. The method includes forming the part by depositing consecutive part layers each including rows of filaments made of a part material from the machine, where depositing each part layer includes non-sequentially depositing one set of a plurality of filaments so that a gap is formed between the filaments and then depositing any number of additional sets of filaments so that each adjacent pair of filaments in each additional set of filaments are non-sequentially deposited.