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US 10,770,318 B2Granted
High temperature tubular heaters
AssigneeWatlow Electric Manufacturing Company
InventorsMohammad Nosrati, Roger Brummell, Kenneth D. Ames, Paul S. Whetstone
Life of this patent
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Abstract
A heater assembly includes a heating member, a mounting member that mounts the heating member to a wall of an external component, and an insulator disposed between the heating member and the wall. The insulator electrically insulates the heating member from the wall and blocks a ground path from the heating member to the wall of the external component.
Claims20
A heater assembly, comprising:
- a heating member comprising a resistive element and a dielectric material surrounding and electrically insulating the resistive element;
- a mounting member that mounts the heating member to a wall of an external component;
- and
- an insulator disposed between the heating member and the wall of the external component and electrically insulates the heating member from the wall and blocks a ground path from the heating member to the wall of the external component,
- wherein the resistive element is electrically insulated by both the dielectric material and the insulator during normal operation of the heating member, and the resistive element remains electrically insulated by the insulator during a dielectric breakdown of the dielectric material due to the ground path from the resistive element to the wall of the external component being blocked by the insulator.
2 more elements
A heater assembly comprising:
- a heating element;
- a metal sheath surrounding the heating element;
- a dielectric material disposed between the heating element and the metal sheath;
- and
- a coating disposed around the metal sheath,
- wherein the coating includes an impervious material.
3 more elements
Dependencies are inferred from the claim text.