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:
Oct. 14, 2008
Filed:
Jan. 27, 2006
Denis Alff, Malauzat, FR;
Denis Alff, Malauzat, FR;
Michelin Recherche et Technique S.A., Granges-Paccot, CH;
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.