发明名称 |
Method of severing an annular core of a ferromagnetic material for a deflection unit and deflection unit for a television tube comprising an annular core severed according to such a method. |
摘要 |
<p>A method of severing an annular core (9) of a ferromagnetic material in which the annular core (9) is weakened by providing two lines of recesses (13) by means of a laser (10), as a result of which the annular core (9) is severed into two parts according to the provided lines of the recesses (13).</p> |
申请公布号 |
EP0256578(A1) |
申请公布日期 |
1988.02.24 |
申请号 |
EP19870201389 |
申请日期 |
1987.07.21 |
申请人 |
N.V. PHILIPS' GLOEILAMPENFABRIEKEN |
发明人 |
ELDERS, MARIUS JOSEPH;ABBRINGH, FREDERIK JAN GEORG |
分类号 |
H01J9/236 |
主分类号 |
H01J9/236 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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