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. 17, 2016
Filed:
Oct. 08, 2013
Raytheon Company, Waltham, MA (US);
Geoffrey Chad Spalt, Tucson, AZ (US);
Raytheon Company, Waltham, MA (US);
Abstract
A fused deposition modeling (FDM) extrusion head is configured to receive control signals from a controller. The FDM extrusion head receives a stream of thermofusible material into an input channel; forces the stream of thermofusible material into a liquefier channel using a mechanical driver; heats the stream of thermofusible material within the liquefier channel to a specified temperature above melting point of the thermofusible material; and receives the heated thermofusible material from an outlet of the liquefier channel and expels the heated thermofusible material through an extrusion tip. The controller determines at least one specified location to deposit the heated thermofusible material according to a coordinate system; cause the extrusion nozzle to selectively deposit a first layer of the heated thermofusible material onto a build platform; and after thermal fusion of the first layer is complete, vertically adjust the distance between the extrusion nozzle and the first layer; and select to deposit a second layer immediately on top of the first layer pause deposit a subassembly, or to pause to receive a subassembly onto at least a portion of the first layer.