Method of manufacturing a flat corrugated tube

Details Method of manufacturing a flat corrugated tube Method of manufacturing a flat corrugated tube

1999-08-25

2000-11-28

Larson, Lowell A.

Metal deforming

Process

Tube making or reshaping

29890053, B21D 1502

Patent

active

061519499

ABSTRACT:
A method of finishing a length, particularly a leading end (66), of an aluminum heat exchanger core tube (30) that has a flattened, oblong cross section to facilitate lacing through an aluminum fin stack. A widthwise intermediate portion of the tube that, in the cross section, is intermediate opposite widthwise end portions is corrugated by squeezing the widthwise intermediate portion in the direction of the cross section thickness (FIGS. 5 and 6). While the corrugated widthwise intermediate portion is being held squeezed, the widthwise end portions of the tube cross section are reformed to size the tube end to a desired overall width and a desired overall thickness free of substantial springback when the corrugated widthwise intermediate portion ceases to be held squeezed (FIGS. 7, 8, 9).

REFERENCES:
patent: 3972219 (1976-08-01), Riehl
patent: 4692979 (1987-09-01), Pietzcker
patent: 4730669 (1988-03-01), Beasley et al.
patent: 4930331 (1990-06-01), Manning
patent: 5009576 (1991-04-01), Shinmura
patent: 5501270 (1996-03-01), Young et al.
patent: 5526670 (1996-06-01), Parola

Affiliated with

Also associated with

Rating

Method of manufacturing a flat corrugated tube 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 manufacturing a flat corrugated tube, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of manufacturing a flat corrugated tube will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1713413