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. 29, 2013
Filed:
Jun. 07, 2011
David T. Wang, Sunnyvale, CA (US);
Robert P. Cousineau, Boston, MA (US);
Lori E. Lucke, Eagan, MN (US);
Marwan A. Fathallah, Mundelein, IL (US);
John Stephen Ziegler, Arlington Heights, IL (US);
David T. Wang, Sunnyvale, CA (US);
Robert P. Cousineau, Boston, MA (US);
Lori E. Lucke, Eagan, MN (US);
Marwan A. Fathallah, Mundelein, IL (US);
John Stephen Ziegler, Arlington Heights, IL (US);
Hospira, Inc., Lake Forest, IL (US);
Abstract
A method and pump that accurately senses air in a fluid delivery line pulses or activates and deactivates the air sensor(s) multiple times during the pumping phase of the fluid delivery cycle and can generate alarms based upon a single indication or a cumulative indication of air in the line. The pump can include multiple air sensors spaced along the delivery line so that the method can use the multiple signals therefrom to distinguish real moving air bubbles from false positives and/or air bubbles adhered to the inner wall of the line.