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. 12, 2010
Filed:
Jan. 21, 2008
Applicants:
Felix Mayer, Stäfa, CH;
Mark Hornung, Männedorf, CH;
Marc Von Waldkirch, Zollikon, CH;
Marcel Plüss, Wädenswil, CH;
Inventors:
Felix Mayer, Stäfa, CH;
Mark Hornung, Männedorf, CH;
Marc von Waldkirch, Zollikon, CH;
Marcel Plüss, Wädenswil, CH;
Assignee:
Sensirion AG, Stafa, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01F 1/68 (2006.01);
U.S. Cl.
CPC ...
Abstract
A thermal flow sensor is equipped with a self-test unit that monitors the device and generates a fault signal in the presence of a malfunction. The self-test unit can e.g. monitor the integrity of a membrane carrying the heater and temperature sensors, or it can monitor various operational parameters of the device, thereby increasing the safety of the device.