General Electric Company

Ronald Eric Maier

Glenn Howard Kuenzler

Deborah Ann Haitko

Stanlee Teresa Buddle

Harvey W Krage, Jr

Ronald DeCubellis

David W Allen

James L Lannan

John Richard Fitzpatrick

John R Agoston

A method and apparatus for preventing the formation of leachable mercury in mercury arc vapor discharge lamps is provided which comprises providing in the lamp structure an effective amount of an antioxidant composition and an iron shield wherein the iron shield comprises a dose of elemental mercury.

Control of leachable mercury in fluorescent lamps

A modified lamp includes first and second filaments contained in an envelope to which power is selectively provided individually or conjunctively to obtain three distinct light levels. A contact member in the lamp base is modified to include a planar surface over a major portion of its radial width. Additionally, a lead wire opening that receives one of the lead wires extending from one of the filaments, is spaced from the planar surface to limit the potential for electrical contact with a tang of an associated socket. In one preferred embodiment, the lead wire opening is disposed in a recess that has a maximum circumferential dimension less than the cross-section of the tang to preclude advancement of the tang into the recess. A flat is provided along the outer periphery of the contact member to provide accurate orientation of the contact member during lamp assembly.

Base for a three-way lamp

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Hudson, OH, United States of America

Ronald Eric Maier