Metal deforming – By use of tool acting during relative rotation between tool... – During rotation of work
Reexamination Certificate
2006-08-01
2006-08-01
Tolan, Ed (Department: 3725)
Metal deforming
By use of tool acting during relative rotation between tool...
During rotation of work
C072S084000, C029S890150
Reexamination Certificate
active
07082796
ABSTRACT:
A method of making Circular and Oval Flanged Rings, for the connection of thin walled circular and oval ducting, including Circular and Oval Flanged Rings having a Sheet Metal and Air Conditioning Contractors National Association (SMACNA) standard T24 Profile. Thin gauge Lock Form Quality steel, from 10 to 20 gauge, is cut into strips with the strip ends butt welded forming Flanged Ring Band Stock which is inserted and clamped into a Spinning Die. The Spinning Die is rotated by a horizontally configured lathe output shaft presenting the extended portion of the Flanged Ring Band Stock for machine tool forming. Standard machine tools are used to form the Flanged Ring Band Stock into a Circular Flanged Ring including the SMACNA T24 Flanged Ring Profile. A Circular Flanged Ring is cut along a diameter into Semi-circular Flanged Ring Portions; straight segments including segments with SMACNA T24 Linear Segments are roll formed, assembled into a oval shape within a fixture and welded forming the Oval Flanged Ring. The method of making and the Circular and Oval Flanged Rings are disclosed.
REFERENCES:
patent: 4117704 (1978-10-01), Nakache et al.
patent: 5983496 (1999-11-01), Hermanson
patent: 6289706 (2001-09-01), Hermanson
patent: 6301781 (2001-10-01), Hermanson
patent: 6644083 (2003-11-01), Pakker
Christensen O'Connor Johnson & Kindness PLLC
Tolan Ed
LandOfFree
Circular and oval flanged rings for ducting and method of... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Circular and oval flanged rings for ducting and method of..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Circular and oval flanged rings for ducting and method of... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3709582