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:
Nov. 09, 1999
Filed:
Oct. 08, 1996
Applicant:
Inventor:
Michael C Siminski, Sinking Spring, PA (US);
Assignee:
Morton International, Inc., Chicago, IL (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B21D / ; B35B / ; B05D / ; B05D / ;
U.S. Cl.
CPC ...
428624 ; 428626 ; 428414 ; 428416 ; 428418 ; 428500 ; 427195 ; 427203 ; 427 35 ; 427384 ; 427386 ; 4273881 ; 427410 ;
Abstract
High-tensile steel, particularly automotive coil springs formed of high-tensile steel, are coated first with an epoxy coating powder containing high levels of zinc and then with a poly(ethylene/acrylic acid copolymer) coating powder. Both coatings are applied and fused or fused and cured at temperatures of 325.degree. F. or below so as not to affect the metallurgic properties of the steel. The dual-coating protects the steel from pitting and corrosion.