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. 07, 2006
Filed:
Mar. 10, 2004
Kevin Ptasienski, O'Fallon, MO (US);
James Mcmillin, Algonquin, IL (US);
Thomas T. Nagl, St. Louis, MO (US);
Rolando O. Juliano, Hannibal, MO (US);
Kevin Ptasienski, O'Fallon, MO (US);
James McMillin, Algonquin, IL (US);
Thomas T. Nagl, St. Louis, MO (US);
Rolando O. Juliano, Hannibal, MO (US);
Watlow Electric Manufacturing Company, St. Louis, MO (US);
Abstract
A layered heater is provided with a resistive layer having a resistive circuit pattern, the resistive circuit pattern defining a length and a thickness, wherein the thickness varies along the length of the resistive circuit pattern for a variable watt density. The present invention also provides layered heaters having a resistive circuit pattern with a variable thickness along with a variable width and/or spacing of the resistive circuit pattern in order to produce a variable watt density. Methods are also provided wherein the variable thickness is achieved by varying a dispensing rate of a conductive ink used to form the resistive circuit pattern, varying the feed rate of a target surface relative to the dispensing of the ink, and overwriting a volume of conductive ink on top of a previously formed trace of the resistive circuit pattern.