Electric lamp and discharge devices – With temperature modifier – Double wall – jacket or casing for envelope
Patent
1989-03-03
1990-10-02
O'Shea, Sandra L.
Electric lamp and discharge devices
With temperature modifier
Double wall, jacket or casing for envelope
313550, H01J 1724
Patent
active
049610201
ABSTRACT:
An improved high pressure sodium vapor lamp construction is provided for operation on sonic frequency pulses without excessive acoustic noise. The novel jacketed lamp construction employs non-magnetostrictive metal for the frame employed to suspend a ceramic arc tube within the outer jacket in combination with a particular orientation or placement for ring getter elements located within said outer envelope. Various lamp constructions embodying such improvement are disclosed to enable relatively noise free lamp operation.
REFERENCES:
patent: 3248590 (1966-01-01), Schmidt
patent: 3806748 (1974-04-01), Cohen et al.
patent: 4061939 (1977-12-01), Strok, Jr.
patent: 4137484 (1979-01-01), Osteen
patent: 4361782 (1982-11-01), Reiling
Corwin Stanley C.
General Electric Company
Jacob Fred
McMahon John P.
O'Shea Sandra L.
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