Electric lamp or space discharge component or device manufacturi – Process – Combined – e.g. – with shaping of lamp or device envelope
Patent
1983-11-28
1985-10-08
Ramsey, Kenneth J.
Electric lamp or space discharge component or device manufacturi
Process
Combined, e.g., with shaping of lamp or device envelope
445 26, 445 6, 313493, 65 42, 65 56, H01J 926
Patent
active
045457743
ABSTRACT:
A method of manufacturing a low-pressure mercury vapor discharge lamp having a discharge envelope sealed in a vacuum-tight manner and comprising four substantially parallel co-extending glass tube parts (1,2,3,4), adjacent tube parts (1,2) being connected through a cross-coupling (5) to each other so that during operation of the lamp the major part of each of the tube parts (1,2,3,4) as well as the cross-couplings (5,6,7) are traversed by the discharge.
According to the invention, first a cross-coupling (24) is established between a first tube part (20) having a length l.sub.1, which is sealed at one end (20a) and comprises at the other end an electrode (22), and a tube part (18) likewise sealed at one end (18a) having a length l.sub.1 +l.sub.2, which tube part (18) comprises at its other end an electrode (16), the tube part (18) being subdivided at (18b) into two tube parts, one of which has a length l.sub.1 (26) and the other has a length l.sub.2 (27), the tube part having a length l.sub.1 (26) being removed by the use in a next cycle, while the remaining coupled tube parts (20,27) are arranged beside a pair (21,28) formed in a corresponding manner and are connected to each other by a cross-coupling (29).
REFERENCES:
patent: 3237042 (1966-02-01), Martyny et al.
patent: 4324447 (1982-04-01), van der Wolf
Mollet Adrianus J. T.
Ridders Johannes A. M.
Van Gils Wilhelmus M. J.
Ramsey Kenneth J.
Rowan Kurt
Smith Robert S.
U.S. Philips Corporation
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