Bulb formed from bulb forming orifice plate

Details Bulb formed from bulb forming orifice plate Bulb formed from bulb forming orifice plate

1991-12-20

1992-12-08

Lindsay, Robert L.

Stock material or miscellaneous articles

Hollow or container type article

Glass, ceramic, or sintered, fused, fired, or calcined metal...

65184, 65185, 313315, 313317, H01K 100

Patent

active

051696959

ABSTRACT:
An orifice plate for a glass ribbon machine has an orifice provided with a side wall having a continuously variable angle. When used for making envelopes for incandescent lamps, the plate provides stronger bulbs.

REFERENCES:
patent: 3635689 (1972-01-01), Kurokawa
patent: 3652253 (1972-03-01), Small
patent: 3703363 (1972-11-01), Heaton et al.
patent: 4530378 (1985-07-01), Boog et al.
patent: 4569867 (1986-02-01), Noe

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