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:
Sep. 30, 2014
Filed:
Jun. 16, 2011
Kurt J. Doughty, Berlin, CT (US);
Terrance R. Snider, Belchertown, MA (US);
Daniel Uttberg, Agawam, MA (US);
Eric A. Rohrbach, Lebanon, CT (US);
Kurt J. Doughty, Berlin, CT (US);
Terrance R. Snider, Belchertown, MA (US);
Daniel Uttberg, Agawam, MA (US);
Eric A. Rohrbach, Lebanon, CT (US);
Hamilton Sundstrand Corporation, Windsor Locks, CT (US);
Abstract
A method for detecting a leak in a closed-volume liquid system comprises circulating a fluid through a closed-loop with a pump having a reservoir and that is driven by an electric motor. The method also comprises sensing a pressure in the closed-loop, sensing current draw by the motor and sensing fluid level in the reservoir. The method further comprises determining a presence of a leak of fluid from the closed-loop based upon two of the sensed signals using a first leak detection logic, and determining the presence of a leak of fluid from the closed-loop based upon at least one of the sensed signals using a second leak detection logic.