发明授权
- 专利标题： Process for making a gastight passage
- 专利标题（中）： 制作气球通道的过程
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申请号： US636954申请日： 1975-12-02
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公开(公告)号： US4091520A公开(公告)日： 1978-05-30
- 发明人: Petrus Leo Clemens Wijnant , Hendrik Jan Ijlstra
- 申请人： Petrus Leo Clemens Wijnant , Hendrik Jan Ijlstra
- 申请人地址： NL The Hague
- 专利权人： Stichting Reactor Centrum Nederland
- 当前专利权人： Stichting Reactor Centrum Nederland
- 当前专利权人地址： NL The Hague
- 主分类号： B23P15/00
- IPC分类号： B23P15/00 ; F16J15/40 ; B23P19/00
摘要：
A gastight seal for a rotating spindle or the like is made by tightly fitting an externally spirally ribbed element into a bore in another element and machining out that part of the element which projects inside the spiral rib so as to leave only the spiral rib flexed within the bore.
公开/授权文献
- US5715101A Focusing apparatus for a surveying instrument 公开/授权日：1998-02-03
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