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:
Sep. 25, 1990
Filed:
Apr. 03, 1989
Applicant:
Inventors:
Claude R Wallick, Jr, Jefferson, KY (US);
Thomas J Schmitt, Jefferson, KY (US);
Bruce E Bogart, Floyd, IN (US);
John L Krebs, Washington, WI (US);
Assignee:
Emerson Electric Co., St. Louis, MO (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22F / ;
U.S. Cl.
CPC ...
148 13 ; 266103 ; 266104 ;
Abstract
A method and apparatus for treating preselected areas of metallic ladder rungs wherein such metallic spaced rungs are moved in a path substantially normal to the longitudinal axes of the rungs with preselected areas of the spaced rungs passing through a controlled longitudinally extending heating zone to heat such preselected areas to a desired annealing temperature.