Back to results
US 6,142,360 AGranted
Method of friction welding tubular members
AssigneeFitzpatricks
InventorGraham Anthony Hutt
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeFitzpatricks
InventorGraham Anthony Hutt
Estimating the term…
A method of welding two tubular members (1, 2) in end to end relationship includes providing the end of each tubular member (1, 2) to be joined with a shaped portion (3, 4). The shaped portion (3, 4) has a surface (10) which is substantially perpendicular to the radius of the tubular member (1, 2) and a second surface (13) at an obtuse angle to the radius of the tubular member (1, 2). Hence, when the ends to be joined are brought into contact with each other, shaped portions (3, 4) define a three-sided channel (13, 10, 13). A ring-shaped member (6) having a quadrilateral cross section is located in the channel. The ring-shaped member (6) has a radius which is greater than the radius of the first surface and less than the radius of the external wall of the tubular member (1, 2). The ring-shaped member (6) is rotated relative to the tubular members (1, 2) and the ring-shaped member (6) is subsequently compressed to bring the ring-shaped member (6) into contact with the shaped portions (3, 4) of the tubular members (1, 2) to form a friction weld which welds the tubular members (1, 2) together in end to end relationship.
A method of friction welding two tubular members in an end to end relationship comprising the steps of:
In combination a tubular member and a ring shaped member for friction welding two such tubular members in end to end relationship, said ends of said tubular members including a shaped portion having a first surface which is substantially perpendicular to a radius of the tubular member and a second surface at an obtuse angle to the radius of the tubular member, such that when the ends of said first tubular member and said second tubular member are brought into contact with each other, the shaped portions define a three sided channel, and wherein at least an inner portion of the ring shaped member has a quadrilateral cross-section.
A tubular apparatus, comprising:
Dependencies are inferred from the claim text.