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:
Jul. 03, 2007
Filed:
Oct. 29, 2004
Applicants:
Paul Mark Haines, Lebanon, OR (US);
Mark A. Devries, Albany, OR (US);
Ronald J. Ender, Corvallis, OR (US);
Mark Hauck, Corvallis, OR (US);
Inventors:
Paul Mark Haines, Lebanon, OR (US);
Mark A. DeVries, Albany, OR (US);
Ronald J. Ender, Corvallis, OR (US);
Mark Hauck, Corvallis, OR (US);
Assignee:
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K 15/14 (2006.01); B41J 2/175 (2006.01);
U.S. Cl.
CPC ...
Abstract
A check valve includes two opposing sheets surfaces that are coupled together to form a flow channel there between. The flow channel has a first end, a second end and at least one direction-changing portion in between the first and second ends. A first opening is provided at the first end of the flow channel and a second opening is provided at the second end of the flow channel.