Abstract: A fused deposition process is used to form three-dimensional solid objects from a mixture including a particulate composition dispersed in a binder. The article is formed by depositing the mixture in repeated layers of predefined thickness, with each layer solidifying before the next adjacent layer is dispensed. Following formation and a binder removal step, the article may be at least partially densified to achieve preselected properties. The process permits three-dimensional articles to be formed relatively quickly and inexpensively, without the need for molds or other tooling.
Type:
Grant
Filed:
May 20, 1997
Date of Patent:
May 4, 1999
Assignees:
Rutgers, the State University Old Queens, Stratasys, Inc.
Inventors:
Stephen C. Danforth, Mukesh Agarwala, Amit Bandyopadghyay, Noshir Langrana, Vikram R. Jamalabad, Ahmad Safari, Remco van Weeren, William R. Priedeman, Jr.