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US 2019/0150228 A1Published application
Electric heater crushable cores and compacted unitary heater devices and method for making such devices
OwnerWalter Crandellinventor
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OwnerWalter Crandellinventor
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A crushable ceramic heater core for an electric heater device which has a cylinder-like body of crushable ceramic material and grooves along the periphery of the body, the grooves being key shaped and adapted to receive a conductive pin in a groove. The invention also includes an electric heater device where such a core has been wound with heater wire and the conductive pin has been inserted in a core groove in contact with the wire, and the wire wound core has been installed in a sheath which has been filled with electoral insulating material. The sheath and its contents are swaged to create a compacted unitary heater assembly. The invention also includes the process for making the wire wound grooved core having a conductive pin therein in contact with the wire winding, and a method for making a heating device having such a core and which has been compacted to a theoretical density. The heater assembly and the method may also include installation of temperature sensing devices.
A crushable ceramic heater core for an electric heater device comprising a cylinder-like body of crushable ceramic material, longitudinal grooves along a periphery of said body, said grooves being key shaped and adapted to receive a conductive pin therein.
A heating element assembly having a crushable ceramic core and a series of key shaped grooves on an exposed surface of said core, said assembly having a winding of heater wire arranged on said surface, the ends of said winding terminating in said key grooves.
A method for making a crushable electric heater core comprising the steps of
Dependencies are inferred from the claim text.