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. 29, 2018
Filed:
Oct. 23, 2013
Applicant:
Hewlett-packard Development Company, L.p., Houston, TX (US);
Inventors:
Pedro Miguel Teixido Rovira, Sant Cugat del Valles, ES;
Santiago Sanz Ananos, Sant Cugart del Valles, ES;
Fernando Bayona Alcolea, Terrassa, ES;
Assignee:
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01P 3/56 (2006.01); F04D 27/00 (2006.01); F04D 29/58 (2006.01); G01R 17/00 (2006.01); G01R 31/04 (2006.01);
U.S. Cl.
CPC ...
F04D 27/001 (2013.01); F04D 29/582 (2013.01); G01R 17/00 (2013.01); G01R 31/045 (2013.01);
Abstract
Inputting an input resistance to an operational amplifier. Detecting whether a number of fans are in operation based on the input resistance to the operational amplifier by driving a number of resistors connected in series in a fan circuit associated with the number of fans.