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. 15, 2012
Filed:
Oct. 28, 2009
Applicants:
Andrew J. Phelan, Magnolia, TX (US);
Erik R. Nielsen, Houston, TX (US);
Inventors:
Andrew J. Phelan, Magnolia, TX (US);
Erik R. Nielsen, Houston, TX (US);
Assignee:
Hewlett Packard Development Company, L.P., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05B 5/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A system includes two counter-rotating electric fans. A cooling controller is configured to run the fans at first and second operating points responsive to a measured value of a parameter. The first and second operating points correspond to first and second different required volumes per unit time of air flow. Rotational speeds of the fans at the first and second operating points define first and second different rotational speed offsets.