Convolutely wound tube having readily conformable edge portions

Details Convolutely wound tube having readily conformable edge portions Convolutely wound tube having readily conformable edge portions

1971-07-30

1976-10-05

Ruehl, Charles A.

Pipes and tubular conduits

Longitudinally seamed

138151, 138170, F16l 918

Patent

active

039839052

ABSTRACT:
A convolutely wound tube having portions adjacent the inside and outside edges thereof more pliable than the remainder thereof for easily conforming to the contour of the inside and outside surfaces thereof and method for making same from a predetermined length of elongate sheet material having opposed first and second surfaces and first and second longitudinal side edges, wherein the method includes mechanically deforming a minor portion of the sheet material adjacent the first or second longitudinal edge, or both, thereof to render same more pliable than the major portion of the sheet material, convolutely winding a predetermined length of the elongate sheet material transversely of the length into a convolute tube while forming the inside edge of the tube from the first longitudinal edge and the outside edge of the tube from the second longitudinal edge of the sheet material so that the pliable portion of the sheet material adjacent the inside and outside edges will readily conform to the contour of the inside and outside surfaces of the convolute tube, and securing the convolute tube in the wound condition with a flop formed by the second longitudinal edge.

REFERENCES:
patent: 267326 (1882-11-01), Childs
patent: 2409249 (1946-10-01), Brown
patent: 3566925 (1971-03-01), Sagara et al.
patent: 3613738 (1971-10-01), Witzig

Affiliated with

Also associated with

Rating

Convolutely wound tube having readily conformable edge portions does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Convolutely wound tube having readily conformable edge portions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Convolutely wound tube having readily conformable edge portions will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-650047