- 专利标题: Extractor cup on a miniature x-ray tube
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申请号: US11291020申请日: 2005-11-30
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公开(公告)号: US07130381B2公开(公告)日: 2006-10-31
- 发明人: Paul A. Lovoi , Petre H. Vatahov , Earl E. Dozier , Peter C. Smith , Leonard Reed , Robert G. Neimeyer
- 申请人: Paul A. Lovoi , Petre H. Vatahov , Earl E. Dozier , Peter C. Smith , Leonard Reed , Robert G. Neimeyer
- 申请人地址: US CA Fremont
- 专利权人: Xoft, Inc.
- 当前专利权人: Xoft, Inc.
- 当前专利权人地址: US CA Fremont
- 代理商 Thomas M. Freiburger
- 主分类号: H01J35/06
- IPC分类号: H01J35/06
摘要:
Methods for connecting electrical potential to an extractor cup at the cathode of a miniature x-ray tube are disclosed. The various connection schemes are designed to form a rugged and conveniently manufacturable connection between the metal extractor cup and one side of the cathode filament, so that the extractor cup shapes the path of electrons as desired en route to the anode of the tube. Some of the disclosed connections involve evaporation of conductive metal or other materials off the filament when the filament is first activated. Others involve applying a paste or paint conductive precursor directly to a base to connect a post and the extractor, the paste being heat-cured after the completion of assembly. Others involve a fine wire or spring strip from one filament post to the walls of the extractor cup. Other schemes include welded or brazed wires or foil, crimping, pinching, swaging and other connections, all made inside the tube enclosure.
公开/授权文献
- US20060093091A1 Extractor cup on a miniature x-ray tube 公开/授权日:2006-05-04