Metal working – Method of mechanical manufacture – Shaping by direct application of fluent pressure
Patent
1980-09-09
1983-01-18
Gilden, Leon
Metal working
Method of mechanical manufacture
Shaping by direct application of fluent pressure
291573R, 29523, B23P 1700
Patent
active
043685714
ABSTRACT:
The sleeving method comprises inserting a metal sleeve within a tube so as to bridge the defective region of the tube. The sleeve is constructed to have teeth on the outside thereof that are capable of tightly contacting the inside surface of the defective tube and creating a labyrinth-type seal therebetween. Once such a sleeve has been inserted into the defective tube, the sleeve is internally expanded in the area of the sleeve wherein the teeth are located. The expansion of the sleeve in the area wherein the teeth are located causes the teeth to closely contact the inside surface of the tube. The other end of the sleeve can then be either similarly attached to the tube or welded to the tube. Next, the remainder of the sleeve is internally expanded which causes the sleeve to shrink in length which results in the teeth slightly penetrating the inside surface of the tube thereby creating a leak tight seal therebetween.
REFERENCES:
patent: 2460580 (1949-02-01), Huber
patent: 3018547 (1962-01-01), Marskell
patent: 3434194 (1969-03-01), Whittaker et al.
patent: 3897619 (1975-08-01), Thivaris
patent: 3977068 (1976-08-01), Krips
patent: 4069573 (1978-01-01), Rogers, Jr. et al.
DePaul L. A.
Gilden Leon
Westinghouse Electric Corp.
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