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US 4,260,094 AGranted
Method of interconnecting several parts, such as a piece of tubing and a plate, a tube or similar body
AssigneeTechnisch Handels- en Adviesbureau van Geffen B.V.
InventorChristiaan A. Stroo
Life of this patent
Estimating the term…
Abstract
The method of using the frictional heat and pressure produced by a rapidly rotating non-cutting piercing tool to weld two or more parts, such as a piece of tubing on one hand and a plate, a tube or another body having locally a relatively thin wall on the other hand, together, to which end said piercing tool is forced through the two or more parts after the latter have been placed in the exact relative positions.
Claims3
The method of making a branch pipe connection to a vessel such as a tube, which comprises the steps of:
- (a) providing a branch pipe blank having a side wall defining a bore and a transverse bottom wall at one end;
- (b) positioning said blank such that its bottom wall engages a wall of the vessel;
- (c) inserting a rapidly rotating, non-cutting piercing tool axially into said blank and penetrating said bottom wall and said wall of the vessel therewith to pierce said bottom wall and said wall of the vessel while welding the blank to the vessel.
Dependencies are inferred from the claim text.