发明名称 |
WERKWIJZE EN INRICHTING VOOR HET DOEN UITZETTEN VAN EEN BUIS. |
摘要 |
A method of expanding a tube into engagement with a header wherein the expander is permitted to move longitudinally a predetermined amount relative to the tube while the expander is being rotated and expanding the tube into engagement with the header. The tube expanding apparatus includes a rotatable expander for insertion into the tube to be expanded, a stop collar that engages the header, a thrust collar that is fixed relative to the expander and a spring disposed between the stop collar and thrust collar permitting the thrust collar and expander to move relatively into the tube as the expander is rotated. |
申请公布号 |
NL7808693(A) |
申请公布日期 |
1979.03.15 |
申请号 |
NL19780008693 |
申请日期 |
1978.08.23 |
申请人 |
DRESSER INDUSTRIES, INCORPORATED TE DALLAS, TEXAS, VER.ST.V.AM. |
发明人 |
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分类号 |
B21D39/10;(IPC1-7):21D39/08 |
主分类号 |
B21D39/10 |
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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