Method of manufacturing thereof fluorescent lamp

Details Method of manufacturing thereof fluorescent lamp Method of manufacturing thereof fluorescent lamp

1989-01-18

1990-03-13

Lindsay, Robert L.

Glass manufacturing

Processes

Forming product or preform from molten glass

65110, 445 26, H01J 926, C03B 3306

Patent

active

049080555

ABSTRACT:
A manufacturing method of a fluorescent lamp having a bent discharge path, which comprises the steps of press-molding a straight glass tube, after heating and softening it, into a bulb having a bent discharge path, while blowing a pressurized gas into the discharge path. A fluorescent lamp having a U-shaped discharge path which is integrally connected through a narrow plate. A slit is formed at least in a portion of the narrow plate adjacent to a sealing portion.

REFERENCES:
patent: 1963961 (1934-06-01), Barclay
patent: 2491848 (1949-12-01), Breadner
patent: 2862337 (1958-12-01), Shaw et al.
patent: 3905795 (1975-09-01), Finch et al.
patent: 3966288 (1976-06-01), Finch et al.
patent: 4196374 (1980-04-01), Witting
patent: 4283217 (1981-08-01), Kawamura
patent: 4319906 (1982-03-01), Fix et al.

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