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US 4,046,258 AGranted
Method and apparatus for measuring the eccentricity of containers
AssigneeOwens-Illinois, Inc.
InventorDavid A. Damm
Life of this patent
Estimating the term…
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AssigneeOwens-Illinois, Inc.
InventorDavid A. Damm
Estimating the term…
A method and apparatus for inspecting glass containers is described in which a high frequency field is produced at an inspection station. The high frequency signal, which may be a radio frequency signal, is fed to the antenna of a probe centrally positioned relative to the antenna and coaxial therewith. The probe, as a unit, is supported adjacent the container to be inspected and the container is rotated relative to the probe. The manner of mounting the probe relative to the bottle permits the probe to move closer or further away from the container wall, depending upon the out-of-roundness of the container and the radio frequency signal is picked up by the probe with the signal level depending upon the relative position of the probe and the wall of the container. This varying detection output is compared with a steady state detection output to derive a signal which is proportional to the relative position of the probe and the container wall. The signal is compared with a reject reference signal to indicate a non-acceptable container and may cause rejection of the container.
A method of inspecting cylindrical articles formed of dielectric material for out-of-round characteristics, comprising the steps of:
In apparatus for measuring the out-of-round characteristics of a generally cylindrical container formed of dielectric material wherein:
Apparatus for measuring the out-of-round characteristics of a generally cylindrical article formed of dielectric material, comprising:
Dependencies are inferred from the claim text.