Apparatus for applying a glass frit to a seal edge of a funnel portion of a picture tube
AssigneeSony Corporation
InventorMichio Tamura
Life of this patent
Estimating the term…
Abstract
Method and apparatus for applying a continuous layer of glass frit to a connection or sealing edge surface of the funnel portion of a picture tube. The glass frit flows onto such surface from a nozzle of a glass frit containing pot while the funnel portion is carried by a turntable. Means are provided for rotating the turntable at such a speed that the relative speed, between the nozzle and the connection surface positioned therebelow, is substantially inversely proportional to the width of the connection surface.
Claims7
An apparatus for applying glass frit to an end surface of the funnel portion of a picture tube, which end surface is of varying width;
- said apparatus comprising a rotatable turntable for supporting said funnel portion with said end surface facing upwardly;
- a container for the glass frit having a nozzle at the bottom thereof for discharging the glass frit at a substantially constant rate;
- means supporting said container for positioning said nozzle over said end surface of the funnel portion;
- means for rotating said turntable and the funnel portion thereon;
- and means for varying the speed of rotation of said turntable in the course of each revolution thereof so that the relative speed between said nozzle and said end surface therebelow is varied substantially in inverse proportion to variations in said width of the end surface.
Dependencies are inferred from the claim text.