Electric lamp or space discharge component or device manufacturi – Process – Combined – e.g. – with shaping of lamp or device envelope
Patent
1989-02-17
1990-06-26
Ramsey, Kenneth J.
Electric lamp or space discharge component or device manufacturi
Process
Combined, e.g., with shaping of lamp or device envelope
445 2, 445 26, H01J 926
Patent
active
049368079
ABSTRACT:
The invention is a method of assembling an electric lamp having a canted arc tube. The invention permits the lamp to be assembled using a standard bulged tube outer envelope having an elongate neck portion of the type normally used for lamps in which the arc tube is mounted coaxially with the envelope axis.
In the inventive method, a stem assembly having a pair of rigid conductors extending therefrom is first sealed in the open end of the neck portion in a gas-tight manner. The envelope is severed around its circumference in the region where the neck portion merges into the bulbous portion of the envelope. After the two portions are separated, a frame holding the arc tube is welded to the rigid inductors of the stem assembly with the arc tube positioned at the desired angle with respect to the lamp defined by the elongate neck portion. The two envelope portions are then resealed in a gas-tight manner and a lamp cap secured to the neck portion.
REFERENCES:
patent: 1202136 (1916-10-01), Wilkins
patent: 2116129 (1938-05-01), Stringer
patent: 4142122 (1979-02-01), Koza
North American Philips Corporation
Ramsey Kenneth J.
Wieghaus Brian J.
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