Glass manufacturing – Processes – With measuring – sensing – inspecting – indicating – or testing
Patent
1986-07-30
1988-02-09
Kellogg, Arthur
Glass manufacturing
Processes
With measuring, sensing, inspecting, indicating, or testing
65 81, 65160, 65163, 65318, C03B 1116
Patent
active
047239760
ABSTRACT:
A method and apparatus for pressing glass TV tube faceplates employing a microprocessor controlled ram and plunger operated with open loop position based speed control at relatively high rates of motion when the plunger is not in critical contact with the glass, at uniform speed as the plunger enters the glass and at closed loop pressure control after the viewing region of the cavity for the faceplate between plunger and mold has been filled out at uniform plunger pressing speed. Pressure control is employed to ramp pressure down to a pressing dwell pressure and maintain that pressure.
REFERENCES:
patent: 3607194 (1971-09-01), Ayers
patent: 3634060 (1972-01-01), Dahlman et al.
patent: 3953187 (1976-04-01), James
patent: 4613352 (1986-09-01), Krumme et al.
patent: 4623375 (1986-11-01), Cardenas-Franco et al.
Bruss H. G.
Kellogg Arthur
Owens-Illinois Television Products Inc.
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