Tire testing device having an intelligent test head

Details Tire testing device having an intelligent test head Tire testing device having an intelligent test head

1998-07-21

2000-03-28

Felber, Joseph L.

Measuring and testing

Tire, tread or roadway

Tire inflation testing installation

G01M 1702

Patent

active

060416491

ABSTRACT:
A tire testing device comprising an air pressure control means for changing the tire pressure of a wheel, a test head and a computer, which prior to and after a change in the air pressure produce an interferogram of the tire surface and convert the interferogram into a modulo-2.pi. image, which for its part is processed to yield a gray value image, and in which from a comparison of the gray value images information about defects present in the tire is obtained, a positioning means for the test head, with which the test head is to be positioned for producing interferograms at a predetermined distance from the tire, and a control means in order to incrementally rotate the wheel by an amount equal to a test segment, when the examination of the preceding test segment is completed, wherein an optical means for producing the interferograms, an electronic control means for the optical means and the air pressure control means are collected together in the test head and in that a sequence control means for the tire checking apparatus and means for evaluating the interferogram are provided in the computer.

REFERENCES:
patent: 5313827 (1994-05-01), Yovichin
patent: 5777219 (1998-07-01), Popio et al.
patent: 5786533 (1998-07-01), Newman
Copy of U.S. application No. 09/093,890, filed Jun. 9, 1998.
Copy of U.S. application No. 09/094,143, filed Jun. 9, 1998.

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