Method for the production of an electrically conductive resistive layer and heating and/or cooling device
AssigneeWatlow Electric Manufacturing Company
InventorElias Russegger
Life of this patent
Estimating the term…
Abstract
An electrically conductive resistive layer (26) is produced by thermally spraying an electrically conductive material (18) onto the surface of a non-conductive substrate (12). Initially, the material layer (14) arising therefrom has no desired shape. The material layer (14) is then removed (24) in certain areas so that an electrically conductive resistive layer (26) having said desired shape is produced.
Claims12
A heater adapted for fixed placement proximate a separate and external part or medium to be heated and defining a shape commensurate with the part or medium to be heated, the heater comprising:
- a complex shaped substrate;
- a nonconductive layer formed over the substrate;
- and
- an electrically conductive resistive layer formed on the nonconductive layer by a process of forming a material in the form of particles onto the nonconductive layer and subsequently and selectively removing areas of the material using a laser to form a complex contour pattern, wherein removing areas of the material creates a desired resistance of the electrically conductive resistive layer such that at least a portion of the particles are micro-welded along a length of the pattern and local oxides are brought into the pattern to fine tune an electrical resistance along the length of the pattern.
A heater adapted for fixed placement proximate a separate and external part or medium to be heated and defining a shape commensurate with the part or medium to be heated, the heater comprising:
- a complex shaped substrate;
- and
- an electrically conductive resistive layer formed on the complex shaped substrate by a process of forming a material in the form of particles onto the complex shaped substrate and subsequently and selectively removing areas of the material using a laser to form a complex contour pattern, wherein removing areas of the material creates a desired resistance of the electrically conductive resistive layer such that at least a portion of the particles are micro-welded along a length of the pattern and local oxides are brought into the pattern to fine tune an electrical resistance along the length of the pattern.
Dependencies are inferred from the claim text.