Back to results
US 5,177,990 AGranted
Autofrettage device for tubes
AssigneeRheinmetall GmbH
InventorHelmut Isgen
Life of this patent
Estimating the term…
Abstract
An autofrettage device for a tube includes thrust bearings for receiving opposite ends of the tube. A mandrel is introducible into the tube and includes a sealing arrangement for sealing an annular gap between the mandrel and an inner wall of the tube against escape of a pressure medium supplied to the annular gap. A mandrel holder including a ball joint socket supports the end of said mandrel so that the mandrel is pivotally movable relative to the mandrel holder.
Claims10
An autofrettage device for a tube, comprising:
- thrust bearing means for receiving opposite ends of the tube;
- a mandrel for introduction into the tube and including sealing means for sealing an annular gap between said mandrel and an inner wall of the tube against escape of a pressure medium supplied to said annular gap, said mandrel having an end;
- and
- a mandrel holder including a ball joint socket for supporting the end of said mandrel so that said mandrel is pivotally movable relative to said mandrel holder.
1 more element
Dependencies are inferred from the claim text.