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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 10682796 B1

PDFFull Text
Date of Patent:
Jun. 16, 2020

Filed:

Oct. 26, 2016

Constant pressure filament driver for extruder heads in three-dimensional object printers

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 64/386 (2017.01); 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 64/106 (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

An additive manufacturing system includes a slip clutch coupled to an actuator of a mechanical driver that feeds solid extrusion material into a heater for supplying thermoplastic material to a manifold in an extruder head. A speed of the actuator can be set to enable the actuator to operate at a rotational speed that is slightly greater than the rotational speed of the mechanical mover. This configuration enables the pressure of the thermoplastic material in the manifold of the extruder head to be in a predetermined range no matter how many nozzles are opened in the extruder head.

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