System and method for detecting a leak in a hydraulic fluid...

Details System and method for detecting a leak in a hydraulic fluid... System and method for detecting a leak in a hydraulic fluid...

2008-03-25

2008-03-25

Williams, Hezron (Department: 2856)

Measuring and testing

With fluid pressure

Leakage

C340S605000, C073S168000

Reexamination Certificate

active

11197217

ABSTRACT:
Methods, systems, and articles of manufacture consistent with the present invention provide for detecting a leak in a hydraulic fluid system having a reservoir and a conduit operatively connected to the reservoir. The fluid may reside in the reservoir, the conduit, or both. A current level of the fluid in the reservoir is sensed. A determination is made as to whether the current level is less than a leak detection level. When it is determined that the current level is greater than the leak detection level, a current temperature of the fluid is sensed and the leak detection level is updated based on the current temperature of the fluid so that thermal expansion of the fluid in the system is considered in detecting and isolating a leak.

REFERENCES:
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patent: 5497653 (1996-03-01), Snow
patent: 5548278 (1996-08-01), Oliver et al.
patent: 5673025 (1997-09-01), Refugio et al.
patent: 5703569 (1997-12-01), Oliver et al.
patent: 5744701 (1998-04-01), Peterson et al.
patent: 5748077 (1998-05-01), Brandt
patent: 6279383 (2001-08-01), Balke et al.
patent: 6696960 (2004-02-01), Martinez
patent: 2004/0244480 (2004-12-01), Streetman

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