Electric lamp, base for use therewith and method of assembling s

Details Electric lamp, base for use therewith and method of assembling s Electric lamp, base for use therewith and method of assembling s

1987-02-05

1989-02-14

Moore, David K.

Electric lamp and discharge devices

With optical device or special ray transmissive envelope

Reflector

313318, 445 27, 439613, 439617, H01J 550, H01J 900

Patent

active

048048780

ABSTRACT:
An electric lamp including a reflector, at least one conductive ferrule located within a surface of the reflector and a lead-in conductor electrically connected to the ferrule and extending within the reflector. The lamp includes a base having an insulative (e.g., ceramic) cap located substantially about the ferrule, barrier means (e.g., ceramic fiber) located within the cap to define an open chamber substantially about the ferrule, an electrical conductor (e.g., wire) extending within the cap and electrically connected (e.g., silver soldered) to the ferrule, and sealing means (e.g., high temperature cement) located within the cap to provide a seal therefore. The barrier means serves to separate the sealing means from the open chamber about the ferrule such that the heat generated by the ferrule can be vented through spaced apertures located within the cap's side wall. A method of assembling a base on an electric lamp is also provided.

REFERENCES:
patent: 2252476 (1941-08-01), Wright
patent: 2436259 (1948-02-01), Keiffer
patent: 3852631 (1974-12-01), Evans
patent: 4345178 (1982-08-01), Pappas et al.
patent: 4370587 (1983-01-01), Notelteirs
patent: 4459120 (1984-07-01), Tyler et al.
patent: 4604680 (1986-08-01), Levin et al.

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