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:
Jan. 26, 2010
Filed:
Jul. 13, 2005
Applicants:
Paul Mark Haines, Lebanon, OR (US);
Mark A. Devries, Albany, OR (US);
Michael Martin, Newport Beach, CA (US);
Inventors:
Paul Mark Haines, Lebanon, OR (US);
Mark A. Devries, Albany, OR (US);
Michael Martin, Newport Beach, CA (US);
Assignee:
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J 2/175 (2006.01);
U.S. Cl.
CPC ...
Abstract
In one embodiment, an ink pen includes an ink chamber, a passage and a printhead operatively connected to the ink chamber through the passage such that ink flowing from the ink chamber to the printhead passes through the passage. The passage includes an upstream part having a polygonal cross sectional area and a downstream part having a cross sectional area smaller than the polygonal cross sectional area.