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:
Apr. 26, 2016
Filed:
Mar. 04, 2011
Applicants:
Curt Gonzales, Corvallis, OR (US);
Ralph L. Stathem, Lebanon, OR (US);
David Olsen, Corvallis, OR (US);
Inventors:
Curt Gonzales, Corvallis, OR (US);
Ralph L. Stathem, Lebanon, OR (US);
David Olsen, Corvallis, OR (US);
Assignee:
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J 2/19 (2006.01); B41J 2/17 (2006.01); B41J 2/175 (2006.01);
U.S. Cl.
CPC ...
B41J 2/19 (2013.01); B41J 2/17596 (2013.01); B41J 2/175 (2013.01); B41J 2/17563 (2013.01);
Abstract
Valve systems for managing air in a fluid ejection system are described herein. One example valve system includes an inlet chamber, a return chamber in communication with the inlet chamber, and a filter-side chamber in communication with the inlet chamber and the return chamber. A first valve controls fluid flow between the filter-side chamber and the return chamber, and a second valve controls fluid flow between the return chamber and the inlet chamber.