Layered heater system having conductive overlays
AssigneeWatlow Electric Manufacturing Company
InventorsElias Russegger, Gerhard Schefbanker, Martin Wallinger, Kevin Ptasienski
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Abstract
A method of forming a layered heater includes forming a continuous resistive layer over a substrate, forming conductive overlays in predetermined areas of the resistive layer, and removing portions of the continuous resistive layer between the conductive overlays to form a plurality of single cuts extending between the conductive overlays. The single cuts extend through the continuous resistive layer between the conductive overlays and longitudinally into a portion of the corresponding conductive overlays. Preferably, the single cuts are formed using a laser.
Claims20
A method of manufacturing a layered heater, comprising:
- forming a resistive layer having a circuit pattern, the circuit pattern having at least one bend portion;
- and
- forming a conductive overlay proximate the bend portion.
A method of forming a layered heater composing:
- forming a continuous resistive layer over a substrate;
- forming conductive overlays in predetermined areas of the resistive layer;
- and
- removing portions of the continuous resistive layer between the conductive overlays to form a plurality of single cuts extending between the conductive overlays,
- wherein the single cuts extend through the continuous resistive layer between the conductive overlays and longitudinally into a portion of the corresponding conductive overlays.
The method according to 9, wherein forming the conductive overlays is achieved by a process selected from a group consisting of thick film, thin film, thermal spray and sol-gel processes.
A method of forming a layered heater comprising:
- forming a continuous resistive layer over a substrate;
- forming conductive overlays in predetermined areas of the resistive layer;
- and
- removing portions of the continuous resistive layer between the conductive overlays to form a plurality of parallel cuts extending between and around the conductive overlays,
- wherein the parallel cuts extend through the continuous resistive layer and do not extend into any portion of the conductive overlays.
Dependencies are inferred from the claim text.