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:
May. 25, 2004
Filed:
Apr. 19, 2002
Louis C. Barinaga, Salem, OR (US);
Ashley E. Childs, Corvallis, OR (US);
Daniel D. Dowell, Albany, OR (US);
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Abstract
A fluid delivery system and method, which employs a print head assembly (PHA) and an fluid supply for intermittent connection. A pump structure re-circulates fluid through the re-circulation path during a pump mode. The fluid supply includes a supply reservoir for holding a supply of fluid, and is connectable to the PHA to provide a fluid interconnect between the supply reservoir and the PHA fluid reservoir when a pressure differential between the PHA and the supply reservoir is sufficient to draw fluid into the PHA free fluid reservoir to replenish the fluid in the PHA fluid reservoir.