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:
Dec. 21, 2004
Filed:
Nov. 19, 2003
Timothy Birkmann, Corona, CA (US);
BE Intellectual Property, Inc., Wellington, FL (US);
Abstract
The liquid sensing system for an aircraft cooler includes a middle liquid level sensor for detecting a middle liquid level of a working fluid, a liquid temperature sensor, a ventilation controller for generating a flight phase signal indicative of a flight phase of the aircraft, and a recirculation unit annunciating a working fluid system leak condition based on the middle liquid level, the liquid temperature, and the flight phase. The recirculation unit only evaluates the working fluid system leak condition during a ground flight phase and a cruise flight phase. A bottom liquid level, pressure in a working fluid accumulator and discharge pressure are also determined, and a no working fluid failure condition is annunciated based on the bottom liquid level signal, the accumulator pressure signal, and the discharge pressure signal.