Apparatus and method for applying a bead of sealing material to a sealing surface of a cathode-ray tube

Abstract

Abstract AN APPARATUS INCLUDING A ROTATABLE SUPPORT FOR HOLDING A CATHODE-RAY TUBE COMPONENT, FOR EXAMPLE, A FUNNEL COMPRISING A SEALING SURFACE HAVING A CLOSED CONFIGURATION IN CLUDING RADIUSED CORNERS, AN INNER BORDER, AND AN OUTER BORDER, A MEANS FOR ROTATING THE SUPPORT, A SEALING-MATERIAL CONTAINER HAVING A BOTTOM OUTLET, A MEANS FOR TRACKING THE SEALING SURFACE WITH THE CONTAINER ALONG A FIRST PATH ON THE SIDES OF THE SEALING SURFACE, AND A MEANS FOR TRACKING THE SEALING SURFACE WITH THE CONTAINER ALONG A SECOND PATH DISPLACED TOWARDS THE OUTER BORDER ON THE CORNERS OF THE SEALING SURFACE. METHOD INCLUDES POSITIONING SEALING SURFACE OF THE CATHODE-RAY TUBE; FOR EXAMPLE, A FUNNELSEALING SURFACE IN A HORIZONTAL PLANE, MOVABLY POSITIONING A CONTAINER HAVING A BOTTOM OUTLET OVER THE SEALING SURFACE, ROTATING THE SEALING SURFACE ABOUT THE CENTER OF THE CLOSED CONFIGURATION, TRACKING SAID ROTATING SEALING SURFACE WITH THE OUTLET ALONG THE FIRST PATH, APPROACHING THE BEGINNING OF THE CORNERS OF THE SEALING SURFACE GRADUALLY MOVING THE OUTLET FROM THE FIRST PATH TO THE SECOND PATH, TRACKING THE ROTATING SEALING SURFACE WITH THE OUTLET ON EACH OF THE CORNERS AT THE SECOND PATH, APPROACHING THE ENDING OF EACH OF THE SEALING SURFACE CORNERS GRADUALLY MOVING SAID OUTLET FROM THE SECOND PATH TO THE FIRST PATH, AND DURING ROTATION DISPENSING A BEAD OF SEALING MATERIAL AT A UNIFORM RATE ON THE SEALING SURFACE.

Inventors

• 👤 Laurence B Kimbrough

Bibliographic Details