Apparatus for checking for electrical frit breakdown in kinescop

Details Apparatus for checking for electrical frit breakdown in kinescop Apparatus for checking for electrical frit breakdown in kinescop

1981-02-24

1983-04-26

Tokar, Michael J.

Electricity: measuring and testing

Electric lamp or discharge device

Cathode-ray tube

324 54, G01R 31024

Patent

active

043814867

ABSTRACT:
An apparatus for checking for electrical frit breakdown in kinescopes includes a support for loosely receiving the kinescope funnel. A floating positioning means closely receives the neck of the kinescope when a kinescope is positioned in the vicinity of the particular location. An orientation mechanism accurately orients the kinescope in the selected orientation and the kinescope is then securely maintained in said location. A fluid-like electrical contact is placed against the outside of the frit seam. A probe having a movable, electrical contact is inserted into the neck of the kinescope and the movable contact brought against the conductive coating on the inside of the envelope. A current flow between the movable contact and the fluid-like contact indicates an electrical frit breakdown.

REFERENCES:
patent: 3045281 (1962-07-01), Skobel
patent: 3654548 (1972-04-01), Pecorari et al.
patent: 3943438 (1976-03-01), Barber et al.
patent: 4329648 (1982-05-01), Allaroyce et al.

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