Tube expander and freezer and method of using same

Details Tube expander and freezer and method of using same Tube expander and freezer and method of using same

1985-05-23

1986-05-27

Moon, Charlie T.

Metal working

Method of mechanical manufacture

Assembling or joining

29234, 29235, B23P 1102, B23P 1902, B23P 1904

Patent

active

045906564

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.

REFERENCES:
patent: 1913198 (1933-06-01), Geyer
patent: 2506069 (1950-05-01), Dalton
patent: 4029895 (1977-06-01), Scarborough
patent: 4417394 (1983-11-01), Moody et al.
patent: 4506430 (1985-03-01), Guzay, Jr.

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