Method and device for tightness control of a joint

Details Method and device for tightness control of a joint Method and device for tightness control of a joint

1989-05-12

1990-02-27

Fields, Carolyn E.

X-ray or gamma ray systems or devices

Specific application

Diffraction, reflection, or scattering analysis

378 86, 250563, 2503601, G01B 1506

Patent

active

049052632

ABSTRACT:
A method and a device for inspecting a joint such as the joint at the rim of a container. Radiant energy is directed into a small area of irradiation on the joint and the container rim is moved relative to the radiant energy so that the area of irradiation moves in one direction along the rim. Additionally, the area of irradiation is scanned crosswise to the one direction to move the area of irradiation across the width of the joint. Radiant energy reflected from the area of irradiation is detected. This radiant energy indicates the characteristics of the joint. The characteristics indicated by the radiant energy are compared to predetermined set value characteristics to detect product residue or other defects in the joint.

REFERENCES:
patent: 3819943 (1974-06-01), Ishibashi et al.
patent: 3880750 (1975-04-01), Butler et al.
patent: 4086497 (1978-04-01), Murray
patent: 4538290 (1985-08-01), Nakamura
patent: 4694479 (1987-09-01), Bacskai et al.
patent: 4794264 (1988-12-01), Quackenbos et al.
Lampi et al., Automatic Infrared Radiometric Scanning to Detect Flexible Packaging Seal Defects, IEEE Transactions on Industrial Electronics and Control Instrumentation, vol. IECI-20, No. 4, Nov., 1973, pp. 205-212.

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