Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Mechanical measurement system
Reexamination Certificate
2006-04-18
2006-04-18
Barlow, John (Department: 2863)
Data processing: measuring, calibrating, or testing
Measurement system in a specific environment
Mechanical measurement system
C702S033000, C702S055000, C702S010000, C073S040000, C700S281000
Reexamination Certificate
active
07031850
ABSTRACT:
A method and apparatus of diagnosing leakage in a fluid power system including a fluid supply line operatively connected to a plurality of valves which are connected to a plurality of actuators. Flow signals generated by a flow sensor disposed in the supply line are processed to obtain fluid consumption over time values and signals used to change the state of the plurality of valves are processes to determine a plurality of episodes. Each of the plurality of episodes corresponds to a pressurization of a particular branch of a particular actuator. The flow signals and the signals used to change the state of the valves are combined to calculate a change in air consumption value for each valve change of state. The change in air consumption values for each episode are compared to a predetermined reference value to determine any deviation corresponding to a particular one of the plurality of episode. The one of the plurality of episodes and corresponding pressurized branch with the greatest deviation is identified. A signal is generated indicating both that a leak is present in the system and the branch responsible for the leak.
REFERENCES:
patent: 4734869 (1988-03-01), Mickowski
patent: 4856278 (1989-08-01), Widmann et al.
patent: 4862385 (1989-08-01), Fujita et al.
patent: 4976144 (1990-12-01), Fitzgerald
patent: 4985857 (1991-01-01), Bajpai et al.
patent: 5067099 (1991-11-01), McCown et al.
patent: 5081599 (1992-01-01), Saito
patent: 5218968 (1993-06-01), Apple
patent: RE34559 (1994-03-01), Mickowski
patent: 5329465 (1994-07-01), Arcella et al.
patent: 5343737 (1994-09-01), Baumoel
patent: 5453944 (1995-09-01), Baumoel
patent: 5471400 (1995-11-01), Smalley et al.
patent: 5550498 (1996-08-01), Kwan et al.
patent: 5594663 (1997-01-01), Messaros et al.
patent: 5608845 (1997-03-01), Ohtsuka et al.
patent: 5628229 (1997-05-01), Krone et al.
patent: 5642278 (1997-06-01), Wang et al.
patent: 5801964 (1998-09-01), McCarthy
patent: 5893047 (1999-04-01), Gimblett et al.
patent: 6246972 (2001-06-01), Klimasauskas
patent: 6282463 (2001-08-01), Oneyama et al.
patent: 6292757 (2001-09-01), Flanagan et al.
patent: 6308138 (2001-10-01), Jones et al.
patent: 6405108 (2002-06-01), Patel et al.
patent: 6425247 (2002-07-01), Schmid
patent: 6542853 (2003-04-01), Murakami et al.
patent: 6711507 (2004-03-01), Koshinaka et al.
patent: 2003/0125841 (2003-07-01), Schlosser
patent: 19628221 (1998-04-01), None
patent: 100 52 664 (2002-05-01), None
patent: 10052664 (2002-05-01), None
patent: 0534 506 (1993-03-01), None
patent: 0 587 902 (1994-03-01), None
patent: 0740805 (1995-07-01), None
patent: 0 850 363 (1998-07-01), None
Boehm Christian
Engelhardt Jens
Kambli Sachin
Barlow John
Festo AG & Co. KG
Hoffmann & Baron , LLP
Kundu Sujoy
LandOfFree
Method and apparatus for diagnosing leakage in a fluid power... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for diagnosing leakage in a fluid power..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for diagnosing leakage in a fluid power... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3616265