发明名称 |
Marker pin for a universal stem mold |
摘要 |
An apparatus for manufacturing a glass stem for an electron tube comprises a first mold assembly and a second mold assembly for forming the stem therebetween. The glass stem includes a plurality of fillets with a lead-in conductor through less than all of the fillets and at least one dummy fillet without a lead-in conductor therethrough. The first mold assembly includes a universal stem having a mold block with fillet-forming openings therein. A replaceable marker pin is disposed and retained within the openings. The marker pin has a first end and an oppositely disposed second end. The first end has a distinctive geometric shape for contacting the dummy fillet and for conveying intelligible information thereto.
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申请公布号 |
US4824459(A) |
申请公布日期 |
1989.04.25 |
申请号 |
US19880196593 |
申请日期 |
1988.05.20 |
申请人 |
THOMSON CONSUMER ELECTRONICS, INC. |
发明人 |
HALE, JOHN R. |
分类号 |
C03B11/14;H01J9/30;(IPC1-7):C03B23/217 |
主分类号 |
C03B11/14 |
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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