Measuring and testing – Tire – tread or roadway – Tire inflation testing installation
Patent
1982-02-23
1983-09-20
Woodiel, Donald O.
Measuring and testing
Tire, tread or roadway
Tire inflation testing installation
G01M 1702
Patent
active
044048483
ABSTRACT:
A method for correcting errors of measurement in a tire uniforming inspecting machine having a pair of upper and lower rims engageable with bead portions of a tire for gripping the tire securely for rotation at a predetermined position and a load wheel engageable with the circumference of the tire at one side thereof to check for variations in the radial force, including: measuring radial runout of the rims and/or load wheel to obtain an erronous deflection signal indicating the amount of radial runout of the rims and/or load wheel; obtaining and storing a primary harmonic component of the erroneous deflection signal; measuring variations in radial force of a tire rotated on the rims to obtain a radial variation signal for a period of one revolution of the tire; multiplying the erroneous deflection signal by a spring constant of the tire to obtain an erroneous variation signal; and subtracting the erroneous variation signal from the radial variation signal to eliminate influence of radial runout of the rims and/or load wheel from the measured value of the radial force of the tire.
REFERENCES:
patent: 3289471 (1966-12-01), Maxwell
patent: 3690165 (1972-09-01), Sturmo et al.
patent: 4338818 (1982-07-01), Hill et al.
Iwama Atsuaki
Maikuma Yoshimata
Oikawa Yuji
Okamoto Masayoshi
Tanaka Toshikazu
Kabushiki Kaisha Kobe Seiko Sho
Woodiel Donald O.
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