Geometrical instruments – Area integrators – Electrical
Patent
1976-10-29
1978-09-19
Aegerter, Richard E.
Geometrical instruments
Area integrators
Electrical
73146, G01B 508, G01M 1702
Patent
active
041142799
ABSTRACT:
A method of increasing tire life of paired vehicular tires by measuring a plurality of mounted and inflated pneumatic tires to provide an indication of the tread diameter and/or circumference length of each tire with an indicated accuracy of at least about 0.020 inch on diameter or at least about 0.062 inch on circumference length and then selecting a pair of the measured tires whose indication of tread diameter differs by no more than about 0.040 inch or whose indication of circumference length differs by no more than about 0.125 inch for mounting on the vehicle as a matched pair. The invention also encompasses the apparatus for making such measurements.
REFERENCES:
patent: 1888416 (1932-11-01), Williams
patent: 2087896 (1937-07-01), Blomstrom
patent: 2526056 (1950-10-01), Weston
patent: 2841874 (1958-07-01), Richardson
patent: 3213543 (1965-10-01), Masuda
patent: 3783523 (1974-01-01), Smith
Meadows, John J., "Indicating Gages Sort Mixed Parts", American Machinist, Nov. 17, 1949, p. 95.
Crabb Jerry A.
Johnson Winston O.
Aegerter Richard E.
Powell B. J.
Stearns Richard R.
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