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:
Feb. 22, 2011
Filed:
Feb. 11, 2008
Robert L. Skubic, Chanhassen, MN (US);
James W. Comb, Hamel, MN (US);
Jerome K. Grudem, Jr., Rogers, MN (US);
William J. Swanson, St. Paul, MN (US);
John Samuel Batchelder, Somers, NY (US);
Steven M. Brose, Belle Plaine, MN (US);
Robert L. Skubic, Chanhassen, MN (US);
James W. Comb, Hamel, MN (US);
Jerome K. Grudem, Jr., Rogers, MN (US);
William J. Swanson, St. Paul, MN (US);
John Samuel Batchelder, Somers, NY (US);
Steven M. Brose, Belle Plaine, MN (US);
Stratasys, Inc., Eden Prairie, MN (US);
Abstract
A pump system comprising a delivery assembly configured to feed a solid material under operational power of a first drive motor, and a screw pump comprising a housing that at least partially defines a barrel of the screw pump, an extrusion tip secured to the housing at a first end of the barrel, a liquefier secured to the housing and intersecting with the barrel, and an impeller extending at least partially through the barrel. The liquefier is configured to receive the solid material fed from the delivery assembly, to at least partially melt the received solid material, and to direct the at least partially melted material to the barrel, and the impeller is configured to drive the at least partially melted material that is directed to the barrel toward the extrusion tip under operational power of a second drive motor.