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US 4,064,618 AGranted
Method of positioning an explosive insert in a vertical tube
AssigneeWestinghouse Electric Corp.
InventorEmil P. Loch
Life of this patent
Estimating the term…
Abstract
A resilient insert for explosively expanding a tube in a tube sheet having a bore which receives an explosive cord, a counter bore, a sleeve which is fastened to the bored end of the insert to position the tube and a positioning wafer which positions the explosive cord within the insert.
Claims5
A method of positioning a resilient insert for explosively expanding a tube into engagement with a tube sheet wherein said insert has a sleeve fixed to one end and said tube extends vertically upwardly from said tube sheet, said method comprising the steps of:
- positioning an explosive cord within said insert so that when the insert is in the tube the explosive cord within the insert will have its inner end disposed adjacent the inner edge of the tube sheet,
- bending the insert starting at a location beyond the inner end of the explosive cord so that when released the insert has a bend set therein,
- inserting the bent insert into a tube until the sleeve abuts the tube sheet, whereby the bent portion holds the insert in the vertical tube.
Dependencies are inferred from the claim text.