Electric lamp and discharge devices – With temperature modifier – Double wall – jacket or casing for envelope
Patent
1989-11-06
1991-02-05
O'Shea, Sandra L.
Electric lamp and discharge devices
With temperature modifier
Double wall, jacket or casing for envelope
445 26, H01J 6134, H01J 926
Patent
active
049908197
ABSTRACT:
A high pressure discharge lamp having a partially collapsible frame for holding an arc tube at a predetermined angle to the lamp axis and being insertable through the neck portion of a standard bulged tube outer envelope. The frame has a first frame section welded to a standard stem assembly, a second frame section rotatably joined to the first frame section for holding the arc tube, and a third frame section rotatably joined to the second frame section for engaging the outer envelope opposite the lamp cap. The frame sections are joined by rotary locking joints and are aligned such that they pivot during insertion of the frame sections when the third frame section engages the dome portion of the outer envelope. The rotary locking joints lock with the arc tube at the desired angle.
REFERENCES:
patent: 2901648 (1959-08-01), Lindsay et al.
patent: 2904710 (1959-09-01), Beeninga et al.
patent: 4142122 (1979-02-01), Koza
patent: 4341975 (1982-07-01), Phillipp et al.
patent: 4410828 (1983-10-01), Ernest
patent: 4422004 (1983-12-01), Knecht
patent: 4936807 (1990-06-01), Kowal
Narby William R.
Webster Charles S.
Wilson Philip H.
North American Philips Corporation
O'Shea Sandra L.
Wieghaus Brian J.
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