Patent Number: 6,310,437

Title: Fluorescent lamp extension tube amalgam holder

Abstract: A glass extension (24) with a cavity (32) for an amalgam (22) is added to an exhaust tube (12) or a flare (14) of a fluorescent lamp. The mouth (36) of the cavity (32) is provided with a bimetal valve having a cover portion (40) to close the cavity (32) when the lamp is cold and to open the cavity when the lamp is hot. The amalgam (22) is a metallic amalgam of, for example, mercury or other know suitable materials for establishing a metallic vapor equilibrium during operation of a discharge lamp. The amalgam holder helps to maintain optimum mercury vapor equilibrium at start-up, and to reduce the effects of mercury vapor starvation resulting from off-times.

Inventors: Blau; Andrew P. (Richmond Hts., OH), Akins; William W. (Aurora, OH), Borowiec; Joseph C. (Schenectady, NY), Lukacs; Sandor (Veroce, HU)

Assignee: General Electric Company

International Classification: H01J 61/28 (20060101); H01J 61/24 (20060101); H01J 061/24 ()

Expiration Date: 10/30/2018