Apparatus for manufacturing fluorescent lamps

Details Apparatus for manufacturing fluorescent lamps Apparatus for manufacturing fluorescent lamps

1980-10-21

1982-12-07

McIntosh, John P.

Coating apparatus

With means to apply electrical and/or radiant energy to work...

Radiant heating

118603, 118408, 118DIG10, B05C 704

Patent

active

043621236

ABSTRACT:
A phosphor suspension is prepared by adding to an aqueous solution of a polyethylene oxide, a phosphor, a phosphate or a borate of an alkali metal and a phosphor bonding agent. After having passed through a filter, the phosphor suspension flows down on the inner surface of a glass bulb of a fluorescent lamp to form a phosphor layer on it. The coated bulb is heated to a temperature which is not higher than its softening temperature while it is transported along two opposite guide rails by two endless conveyors by having both end portions supported by associated guide tips on the conveyors projecting above the guide rails.

REFERENCES:
patent: 1724643 (1929-08-01), Debus
patent: 1789596 (1931-01-01), Potthoff
patent: 2016060 (1935-10-01), Strauch
patent: 2337740 (1943-12-01), Albright
patent: 2412954 (1946-12-01), Zdancewicz
patent: 2415512 (1947-02-01), Malloy
patent: 3196828 (1965-07-01), Turner

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