Measuring and testing – Tire – tread or roadway
Reexamination Certificate
2006-08-01
2006-08-01
Lefkowitz, Edward (Department: 2855)
Measuring and testing
Tire, tread or roadway
Reexamination Certificate
active
07082816
ABSTRACT:
Technology is disclosed for characterizing both mass uneven distribution and high speed uniformity of a tire. Mass uneven distribution is identified from analysis of at least two radial run out (RRO) measurements, wherein a first RRO measurement is obtained for a relatively high speed of at least about 600 rotations per minute. A second RRO measurement may be at a relatively low speed less of at most about 180 rotations per minute if the effects of radial stiffness variation on the RRO is mall. If the effects of radial stiffness variation on the RRO can not be neglected, a third RRO at another high speed of at least above 600 rotations per minute is needed. RRO measurements are then decomposed into a plurality of harmonics and mass uneven distribution coefficients are calculated for the respective harmonics. The mass uneven distribution coefficients are then used to determine size and location of any mass unbalance, including mass uneven distribution and/or point mass. Mass unbalance characterization can be further applied to tire sorting processes and improvements to tire manufacturing. Measurement and analysis of tire high speed radial run out can also be coupled with low speed force measurements to determine and characterize tire high speed uniformity. Tire high speed uniformity characterization can also be applied to tire sorting processes and corresponding tire manufacturing process improvement, for example, in control and optimization of tire layer overlap or variation parameters.
REFERENCES:
patent: 4815004 (1989-03-01), Beebe
patent: 5245867 (1993-09-01), Sube et al.
patent: 5396438 (1995-03-01), Oblizajek
patent: 5645465 (1997-07-01), Vannan, III
patent: 6065331 (2000-05-01), Fukasawa
patent: 6086452 (2000-07-01), Lipczynski et al.
patent: 6139401 (2000-10-01), Dunn et al.
patent: 6513372 (2003-02-01), Anno et al.
patent: 6514441 (2003-02-01), Tanaka et al.
patent: 6606902 (2003-08-01), Koeune et al.
patent: 2002/0177959 (2002-11-01), Williams et al.
patent: 2002/0177964 (2002-11-01), Shteinhauz
patent: 2003/0149542 (2003-08-01), Chang
patent: 2004/0020583 (2004-02-01), Zhu et al.
patent: WO 2002 099377 (2001-06-01), None
The Tire Society,Tire Science And Technology, vol. 19, No. 3, Jul.-Sep. 1991, ISSN 0090-8657, 19 (3) 121-176 (1991) The Tire Society, Inc. Akron, OH 44301 USA.
PCT Int. Publ. WO 02/099377 (Cheng).
Allen Andre
Dority & Manning P.A.
Lefkowitz Edward
Michelin & Recherche et Technique S.A.
LandOfFree
Prediction and control of mass unbalance and high speed... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Prediction and control of mass unbalance and high speed..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Prediction and control of mass unbalance and high speed... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3663436