The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 20, 1995
Filed:
Jun. 28, 1993
Applicant:
Inventors:
Robert R Hellman, Sr, Oxford, CT (US);
Peter J Mullen, New Milford, CT (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21C / ;
U.S. Cl.
CPC ...
72368 ; 72148 ; 72183 ;
Abstract
In a preferred embodiment, a method and apparatus for forming thin-wall tubing for later welding of the seam thereof which includes tightly rolling upon itself a sheet of thin metal stock about a roller between layers of a flexible fabric. When released from the roller, the sheet metal springs back to form a near-perfect tube without the kinks, scratches, and/or dents commonly caused by conventional rolling methods.
Hellman, Sr, Robert. (1995). Method for forming thin-wall tubing (U.S. Patent No. 5425261). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5425261
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile