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:
May. 12, 1992
Filed:
May. 28, 1991
Applicant:
Inventors:
Arthur Evans, Sherburne, NY (US);
John R McManus, Marcellus, NY (US);
Assignee:
Carrier Corporation, Syracuse, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B21C / ; B21D / ;
U.S. Cl.
CPC ...
72134 ; 72422 ; 72426 ; 29759 ;
Abstract
A method and apparatus for forming an electric resistance heating coil of desired resistance that involves forming a straight helical coil and centering the formed coil for transfer to a first folding station for holding the straight helical coil into a U-shaped helical coil.