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. 22, 2012
Filed:
Dec. 18, 2006
Delphine Hertens, Toulouse, FR;
Gerhard Mueller, Grafind, DE;
Wolfgang Legner, Hoehenkirchen-Siegertsbrunn, DE;
Wilhelm Ficker, Poering, DE;
Thomas Ziemann, Inning am Holz, DE;
Reinhard Reischl, Grosshelfendorf, DE;
Marius Bebesel, Munich, DE;
Delphine Hertens, Toulouse, FR;
Gerhard Mueller, Grafind, DE;
Wolfgang Legner, Hoehenkirchen-Siegertsbrunn, DE;
Wilhelm Ficker, Poering, DE;
Thomas Ziemann, Inning am Holz, DE;
Reinhard Reischl, Grosshelfendorf, DE;
Marius Bebesel, Munich, DE;
Airbus Operations SAS, Toulouse, FR;
Abstract
A device for monitoring particle contamination in flowing hydraulic fluids includes a mechanism for particle counting and particle sizing. Further, a method for monitoring particle contamination in flowing hydraulic fluids: determines fluid flow velocity; counts particles in the hydraulic fluid passing the light barrier for a fixed period of time; and obtains particle size distribution by using a range of different trigger levels. The monitoring device is insertable into an A/C hydraulic system to enable an online-monitoring of degradation of fluid quality during normal flight operations or on the ground. The device and method help lower costs for A/C maintenance and increase A/C availability since necessary service actions can be scheduled strategically.