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United States Patent | 3,636,401 |
Cortorillo , et al. | January 18, 1972 |
Anode and cathode electrodes for arc discharge lamps comprising an electrode holder, a tip and a joining piece of high-heat conductivity material which are cast to form a complete electrode without the need for brazing. The casting apparatus includes a mold for holding the electrode holder, tip and joining piece which permits movement of the electrode holder relative to the tip as the joining piece is heated.
Current U.S. Class: | 313/352 ; 313/631 |
Current International Class: | H01J 61/06 (20060101); H01J 61/02 (20060101); H01J 61/98 (20060101); H01J 61/52 (20060101); H01J 61/00 (20060101); H01J 61/073 (20060101); H01j 001/02 () |
Field of Search: | 313/352-354 |
2459579 | January 1949 | Noel |
3043972 | July 1962 | Laszlo |