The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 26, 2020
Filed:
Jan. 30, 2017
Applicant:
Northrop Grumman Systems Corporation, Falls Church, VA (US);
Inventors:
Kenneth F. McKinney, San Diego, CA (US);
Andrew Simmons, San Diego, CA (US);
Kenneth Weidele, San Diego, CA (US);
Tim Manestitaya, San Diego, CA (US);
Alex Grammar, San Diego, CA (US);
Assignee:
NORTHROP GRUMMAN SYSTEMS CORPORATION, Falls Church, VA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29C 64/106 (2017.01); B33Y 30/00 (2015.01); B29K 105/00 (2006.01);
U.S. Cl.
CPC ...
B29C 64/106 (2017.08); B33Y 30/00 (2014.12); B29K 2105/0067 (2013.01);
Abstract
A feed mechanism for feeding a filament into a print head assembly in an FDM printer. The feed mechanism includes a drive assembly that drives the filament into a reservoir where the reservoir is heated by a heater, where the filament is liquefied therein. A pump in the reservoir pumps the liquefied filament material out of the reservoir through an extrusion nozzle to a print head of the printer.