Double walled tubing

Details Double walled tubing Double walled tubing

1984-07-03

1985-12-17

Moon, Charlie T.

Pipes and tubular conduits

Distinct layers

With longitudinal seam

138171, D03D 4926

Patent

active

045587213

ABSTRACT:
Double walled tubing, a method and apparatus for producing the same are disclosed. First and second metal tubes of substantially identical diameters are selected. One end of the second tube is expanded, and the first tube is pushed into the second tube. By mounting the first tube on a mandrel having a mandrel ball with an outer diameter which approximates the inner diameter of the first tube, any creases in the first tube caused by the insertion will be removed by the mandrel ball upon withdrawing the mandrel from the first tube.

REFERENCES:
patent: 621730 (1899-03-01), Wilmot
patent: 988083 (1911-03-01), Ellis
patent: 2072273 (1937-03-01), Obert
patent: 2358743 (1944-09-01), Smith
patent: 3148440 (1964-09-01), Kojac
patent: 3466738 (1969-09-01), Mount
patent: 3863328 (1975-02-01), Arntz
patent: 4257155 (1981-03-01), Hunter

Affiliated with

Also associated with

Rating

Double walled tubing does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Double walled tubing, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Double walled tubing will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2170340