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US 6,723,969 B1Granted
Electrical heating elements for example made of silicon carbide
AssigneeKanthal AB
InventorJohn George Beatson
Life of this patent
Estimating the term…
Abstract
An electrical resistance ceramic heating element comprises: a) three or more ceramic legs comprising regions of the element in which at least the majority of the electrical heating occurs (hot zones), at least one of the legs being effectively entirely a hot zone and at least two of the legs each comprising a hot zone and a cold zone; b) a number of leg terminal portions less than the number of legs, for connection to a power supply; and, c) ceramic bridging portions providing electrical connectivity between the legs.
Claims14
An electrical resistance ceramic heating element comprising:
- a) three or more ceramic legs comprising regions of the element in which at least the majority of the electrical heating occurs (hot zones), at least one of the legs being effectively entirely a hot zone and at least two of the legs each comprising a hot zone and a cold zone;
- b) a number of leg terminal portions disposed adjacent cold zones and less than the number of legs, for connection to a power supply;
- and,
- c) ceramic bridging portions providing electrical connectivity between the legs.
1 more element
Dependencies are inferred from the claim text.