Kinescope panel/mask frame assembly thumper and flush device and

Details Kinescope panel/mask frame assembly thumper and flush device and Kinescope panel/mask frame assembly thumper and flush device and

1985-08-27

1986-08-12

Ramsey, Kenneth J.

Electric lamp or space discharge component or device manufacturi

Process

Including cleaning

209130, 445 60, H01J 920

Patent

active

046053794

ABSTRACT:
An apparatus for removing undesirable particles from a kinescope panel/mask frame assembly includes a plurality of thumper arms. The arms have a cam follower at one end and a thumper at the other end. Cams on a rotatable shaft engage the cam followers to raise the thumpers above the panel. The cams include inset portions to disengage the cams and cam followers. The cams and cam followers face in opposite directions so that the thumpers alternately impact the panel. During the thumping, charged air is passed across the panel/mask frame assembly to charge the assembly and any particles adhering to the assembly because of static charge. The like charges cause the particles to be repelled from the assembly. The combination of the charged airflushing and thumping disengages particles from the assembly which otherwise could cause blocked apertures or shorted electron guns.

REFERENCES:
patent: 149981 (1874-04-01), Booz
patent: 425761 (1890-08-01), Edison
patent: 1307874 (1919-06-01), Olleo
patent: 3712699 (1973-01-01), Syster

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