Apparatus for rectifying round pipe and tubing

Details Apparatus for rectifying round pipe and tubing Apparatus for rectifying round pipe and tubing

2004-06-01

2009-10-13

Tolan, Edward (Department: 3725)

Metal deforming

By use of tool acting during relative rotation between tool...

With tool surface orbiting around axis parallel to direction...

C072S011100, C072S012700, C072S122000

Reexamination Certificate

active

07600406

ABSTRACT:
Apparatus for reducing the diameter, rounding or straightening of pipe or tubing by rolling comprising a plurality of cylindrical rollers arranged in a parallel-cylindrical array through which the pipe or tubing is passed, the rollers being skewed to displace their central contact zones radially inwards bringing them into forceful contact with the external surface of the pipe or tubing, and being rotated to cause the central contact zones to describe helical paths along the external surface of the pipe or tubing. Thereby to progressively apply locally to the whole of the external surface of the pipe or tubing a compressive force in excess of the yield strength of its material, causing the pipe or tubing to adopt a set at a smaller diameter.

REFERENCES:
patent: 3014519 (1961-12-01), Wright
patent: 3363442 (1968-01-01), Kennedy et al.
patent: 3431769 (1969-03-01), Hajikano
patent: 3795126 (1974-03-01), Semenenko et al.
patent: 4057992 (1977-11-01), Willimzik
patent: 4242894 (1981-01-01), Von Dorp et al.
patent: 4494394 (1985-01-01), Nilsson
patent: 4711112 (1987-12-01), Nilsson
patent: 4712407 (1987-12-01), Yoshiki et al.
patent: 4736607 (1988-04-01), Wochnik
patent: 4763504 (1988-08-01), Nilsson
patent: 4827749 (1989-05-01), Staat et al.
patent: 5477717 (1995-12-01), Skrebergene
patent: 5477719 (1995-12-01), Akiyama et al.
patent: 5533370 (1996-07-01), Kuroda et al.
patent: 5642638 (1997-07-01), Pietsch et al.
patent: 6233991 (2001-05-01), Thimmel et al.
patent: 6968719 (2005-11-01), Zifferer
patent: 2301301 (1974-07-01), None
patent: 0550256 (1993-07-01), None
patent: 2144358 (1985-03-01), None
patent: 567235 (1984-12-01), None

Affiliated with

Also associated with

Rating

Apparatus for rectifying round pipe and 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 Apparatus for rectifying round pipe and tubing, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for rectifying round pipe and tubing will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4137432