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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.:

US 10906224 B1

PDFFull Text
Date of Patent:
Feb. 02, 2021

Filed:

Mar. 09, 2020

Method for operating a constant pressure filament driver to an extruder head in a three-dimensional object printer

Applicant:

Xerox Corporation, Norwalk, CT (US);

Inventors:

Barry P. Mandel, Fairport, NY (US);

Peter J. Nystrom, Webster, NY (US);

Christopher G. Lynn, Wolcott, NY (US);

Robert A. Clark, Williamson, NY (US);

David A. Mantell, Rochester, NY (US);

Assignee:

Xerox Corporation, Norwalk, CT (US);

Attorney:

Maginot Moore & Beck LLP

Primary Examiner:

Xiao S Zhao

Assistant Examiner:

Joseph S Leyson

Int. Cl.
CPC ...
B29C 48/255 (2019.01); B29C 48/92 (2019.01); B29C 64/209 (2017.01); B29C 64/343 (2017.01); B29C 64/321 (2017.01); B29C 64/118 (2017.01); B29C 64/241 (2017.01); B29C 64/295 (2017.01); B29C 48/25 (2019.01); B29C 48/80 (2019.01); B29C 64/386 (2017.01); B29C 64/106 (2017.01); B33Y 10/00 (2015.01); B33Y 30/00 (2015.01); B29K 101/12 (2006.01);
U.S. Cl.
CPC ...
B29C 48/2552 (2019.02); B29C 48/252 (2019.02); B29C 48/266 (2019.02); B29C 48/802 (2019.02); B29C 48/92 (2019.02); B29C 64/106 (2017.08); B29C 64/118 (2017.08); B29C 64/209 (2017.08); B29C 64/241 (2017.08); B29C 64/295 (2017.08); B29C 64/321 (2017.08); B29C 64/343 (2017.08); B29C 64/386 (2017.08); B29C 2948/92019 (2019.02); B29C 2948/9239 (2019.02); B29C 2948/92266 (2019.02); B29C 2948/92761 (2019.02); B29C 2948/92885 (2019.02); B29K 2101/12 (2013.01); B33Y 10/00 (2014.12); B33Y 30/00 (2014.12);
Abstract

A method of operating an additive manufacturing system feeds solid extrusion material into a heater using a slip clutch coupled to an actuator of a mechanical driver to supply thermoplastic material into a manifold in an extruder head. The method sets a speed of the actuator so the actuator operates at a rotational speed that is slightly greater than the rotational speed of the mechanical mover. This method helps maintain the pressure of the thermoplastic material in the manifold of the extruder head in a predetermined range no matter how many nozzles are opened in the extruder head.

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