Tube expander and freezer and method of using same
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United States of America Patent
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May 27, 1986
Grant Date -
N/A
app pub date -
May 23, 1985
filing date -
May 23, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method and apparatus for expanding a length of flexible tubing so it can be placed over a cylindrically shaped member which has an outside diameter larger than the inside diameter of the tubing. This is accomplished by first expanding the flexible tubing mechanically with a flexible cage and mandrel to the desired inside diameter and then freezing it at this expanded size by spraying it with a cooling media such as liquid nitrogen. The frozen expanded tube can then be easily placed over the cylindrically shaped member so that when the expanded tubing warms and returns to its original configuration, it will generate a tight pressure bond to the inserted member.
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