Rounded end halogen lamp with spiral exhaust tube and method of manufacutre专利检索-卤素灯白炽灯光源手电筒灯光专利检索查询-专利查询网

Rounded end halogen lamp with spiral exhaust tube and method of manufacutre

阅读：70发布：2023-04-24

专利汇可以提供Rounded end halogen lamp with spiral exhaust tube and method of manufacutre专利检索，专利查询，专利分析的服务。并且An incandescent lamp of the tungsten-halogen type having an envelope of an aluminosilicate glass comprising in percent by weight SiO2 between 59 to 70, Al2O3 between 10 to 20 and BaO between 7.4 to 28 and having a coefficient of expansion between 36 and 40 X 10 7 per *C and a tungsten filament connected to lead wires which are directly sealed into the envelope. One end of the lamp envelope is rounded and the other end contains the seal and the tipped-off residue of an exhaust tube. Enclosed in the tipped-off residue is a spiral of tungsten wire which keeps the exhaust tube open during the lead wire sealing operation.，下面是Rounded end halogen lamp with spiral exhaust tube and method of manufacutre专利的具体信息内容。

权利要求

2. An incandescent lamp as claimed in claim 1 wherein said refractory metal lead wires and said spiral are tungsten.

3. An incandescent lamp as claimed in claim 1 wherein said rounded end of said envelope contains a lens.

4. An incandescent lamp as claimed in claim 1 wherein said halogen is a quantity of iodine.

5. An incandescent lamp as claimed in claim 4 wherein said refractory metal lead wires are molybdenum and said refractory metal spiral is tungsten.

6. An incandescent lamp as claimed in claim 5 wherein said iodine is added to the lamp in the form of methyl iodide.

7. An incandescent lamp as claimed in claim 6 wherein said quantity of iodine is equal to 1 percent by volume.

8. A method of manufacturing an incandescent lamp comprising: a. inserting a refractory metal spiral into an exhaust tube, b. heating the exterior of the exhaust tube lightly in the area where the spiral is located, c. attaching a filament to refractory metal lead wires to form a mount, d. positioning said mount over said exhaust tube such that said lead wires straddle the exterior of said exhaust tube in the area of the refractory metal spiral, e. positioning a rounded end bulb over said mount and said exhaust tube, f. heating said envelope, lead wires, and the exhaust tube to seal the lead wires and the outer periphery of the exhaust tube to the bulb at the bulb''s open end to form a sealed lamp. g. flushing said sealed lamp with an inert gas to remove impurities, h. filling said lamp with a fill gas, i. heating said exhaust tube, to form a tipped sealed tube, at a location below said spiral to form a sealed exhausted lamp.

9. The method claimed in claim 8 wherein said heating and tipping operation is followed by cooling of said lamp at said rounded end so that said fill gas is condensed in the rounded end portion of the bulb, heating said tipped-off residue at a location near the end of said spiral to form a pressurized sealed and exhausted lamp.

10. The method claimed in claim 8 wherein said fill gas contains a halogen hydrocarbon and said heating and tipping operation is followed by cracking carbon from said halogen hydrocarbon.

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Rounded end halogen lamp with spiral exhaust tube and method of manufacutre

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