Method of fabricating a double walled pipe elbow

Details Method of fabricating a double walled pipe elbow Method of fabricating a double walled pipe elbow

1991-06-12

1993-03-02

Cuda, Irene

Metal working

Method of mechanical manufacture

Gas and water specific plumbing component making

29424, B21D 3900

Patent

active

051897903

ABSTRACT:
A double walled pipe elbow with an intermediate space between an inner pipe and an outer pipe is formed by joining the ends of a straight inner pipe and a straight outer pipe. The two pipes are bent into a desired shape and then placed in a shaping recess in a shaping tool. Seal plugs are placed at the opposite ends of the pipe elbow. In the sealed condition, a pressurized medium is supplied through at least one end seal plug into the inner pipe and between the inner and the outer pipe for expanding the outer pipe into surface contact with the shaping recess.

REFERENCES:
patent: 1956604 (1934-05-01), Williams
patent: 4332073 (1982-06-01), Yoshida et al.
patent: 4656712 (1987-04-01), Harwood et al.
patent: 4694864 (1987-09-01), Libin
patent: 4746054 (1988-05-01), Moats et al.
patent: 5054185 (1991-10-01), Usui et al.

Affiliated with

Also associated with

Rating

Method of fabricating a double walled pipe elbow does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of fabricating a double walled pipe elbow, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of fabricating a double walled pipe elbow will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-119357