Measuring and testing – Tire – tread or roadway
Reexamination Certificate
2006-01-27
2008-10-14
Allen, Andre J (Department: 2855)
Measuring and testing
Tire, tread or roadway
C152S224000
Reexamination Certificate
active
07434455
ABSTRACT:
The pressure of a vehicle tire fitted on a vehicle wheel is measured and regulated, utilizing a source of compressed air, a check valve leading to an interior of the tire, and an air feed circuit connecting the air source to the check valve. Compressed air is fed from the air source into the circuit and against the check valve to tend to open the check valve. A pressure drop is imposed at a point in the circuit, wherein a resulting pressure drop in the circuit downstream of such point and upstream of the check valve is less than 10% of the pressure drop at the point. A measurement is made of the pressure in the circuit at a location downstream of the point, or in the tire itself. The evolution of the pressure measured in step D is analyzed as a function of time, to determine whether the check valve has been opened.
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patent: 5181977 (1993-01-01), Gneiding et al.
patent: 5674332 (1997-10-01), Battocchio
patent: 6212464 (2001-04-01), Skotnikov
patent: 2004/0055291 (2004-03-01), Meydieu et al.
patent: 32 36 594 (2005-05-01), None
Allen Andre J
Buchanan & Ingersoll & Rooney PC
Michelin & Recherche et Technique S.A.
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