Electric lamp or space discharge component or device manufacturi – Process – With testing or adjusting
Patent
1995-12-22
1998-03-31
Bradley, P. Austin
Electric lamp or space discharge component or device manufacturi
Process
With testing or adjusting
445 28, 445 43, 65 34, H01J 926, H01J 940
Patent
active
057331596
ABSTRACT:
Systems and methods are disclosed for exhausting and combined exhausting and seasoning of x-ray tubes having glass envelopes for a high performance x-ray system having a rotating anode therein. The methods include providing a glass tubulation having a diameter greater than about 20 mm, then operatively connecting the glass tubulation to the x-ray tube glass envelope, providing a glass sealing cup inside the glass tubulation, the glass sealing cup having a smaller diameter than the glass tubulation, providing a vacuum to the glass tubulation, positioning a heater on the outside of the glass tubulation, heating the anode of the x-ray tube to a temperature inside the x-ray tube glass envelope of about 1500.degree. C., positioning the glass sealing cup inside the glass tubulation proximate the position of the heating means on the outside of the glass tubulation, heating the glass tubulation proximate the glass sealing cup to about 1300.degree. C., checking for sealing contact between the glass tubulation and the glass sealing cup; and cooling the glass tubulation proximate the glass sealing cup until the temperature of the heated area is below about 300.degree. C., thereby sealing the glass tubulation/glass sealing cup glass envelope connection.
REFERENCES:
patent: 1915361 (1933-06-01), Gustin
patent: 2946641 (1960-07-01), Wisner
patent: 4578043 (1986-03-01), Teshima et al.
U. S. Patent Application Ser. No. 08/538,144, filed Oct. 2, 1995, by Mark G. Benz et al., entitled "Method for Manufacturing X-ray Tubes".
Dennin Michael Patrick
Jones William Joseph
Raber Thomas Robert
Bradley P. Austin
Cusick Ernest G.
General Electric Company
Knapp Jeffrey T.
Pittman William H.
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