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:
Mar. 27, 2007
Filed:
Nov. 21, 2003
Kenneth F. Fennewald, Maryland Heights, MO (US);
William A. Mcdowell, Iii, Aurora, IL (US);
Kevin Ptasienski, O'Fallon, MO (US);
Louis P. Steinhauser, St. Louis, MO (US);
Kenneth F. Fennewald, Maryland Heights, MO (US);
William A. McDowell, III, Aurora, IL (US);
Kevin Ptasienski, O'Fallon, MO (US);
Louis P. Steinhauser, St. Louis, MO (US);
Watlow Electric Manufacturing Company, St. Louis, MO (US);
Abstract
A heater system is provided with a layered heater in communication with a two-wire controller, wherein a resistive layer of the layered heater is both a heater element and a temperature sensor. The two-wire controller thus determines temperature of the layered heater using the resistance of the resistive layer and controls heater temperature through a power source. Furthermore, a heater system using a layered heater in communication with a two-wire controller for a specific application of a hot runner nozzle in an injection molding system is provided by the present invention.