Extended jacket end, double expansion hydroforming

Details Extended jacket end, double expansion hydroforming Extended jacket end, double expansion hydroforming

1996-09-26

1998-11-17

Hughes, S. Thomas

Metal working

Plural diverse manufacturing apparatus including means for...

Binding or covering and cutting

72 62, B23P 2300, B21D 2602

Patent

active

058360654

ABSTRACT:
Hydroforming double wall tubular stock into an air gap tubular element comprising providing a plural wall tubular workpiece having at least an inner wall liner and an outer wall jacket having adjacent open axial ends, causing at least one of the jacket ends to extend axially beyond the adjacent liner end and to be flared outwardly, placing the workpiece into a first mold cavity of a size and configuration to result in the desired size and configuration of the liner, sealing the open ends of said liner, injecting hydroforming fluid into said liner to fill it and applying pressure thereto to expand the liner and jacket in the first mold cavity, releasing the pressure, placing the workpiece in a second mold cavity of a size and configuration desired for the jacket on a resulting air gap tubular element, providing hydroforming end closures to seal off the jacket ends, at least one of the end closures having an annular shoulder aligned with the flared extended jacket end radially outwardly offset from the adjacent liner end, pressing the annular shoulder directly against the flared jacket end to seal the flared jacket end between the shoulder and an anvil surface, injecting fluid into the workpiece to fill it and applying pressure to expand only the jacket.

REFERENCES:
patent: 5107693 (1992-04-01), Olszewski
patent: 5170557 (1992-12-01), Rigsby
patent: 5189790 (1993-03-01), Streubel
patent: 5363544 (1994-11-01), Wells
patent: 5475911 (1995-12-01), Wells et al.

Affiliated with

Also associated with

Rating

Extended jacket end, double expansion hydroforming does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Extended jacket end, double expansion hydroforming, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Extended jacket end, double expansion hydroforming will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-873618