Electric heating – Heating devices – With heating unit structure
Reexamination Certificate
2003-02-20
2008-05-27
Fuqua, Shawntina (Department: 3742)
Electric heating
Heating devices
With heating unit structure
C219S211000, C219S212000, C219S528000, C219S529000, C219S552000, C219S553000, C219S270000, C219S402000, C338S283000, C338S333000, C338S334000, C338S330000, C373S133000, C373S134000
Reexamination Certificate
active
07378621
ABSTRACT:
The present invention relates to an electrical resistance element of the molybdenum silicide type that includes two terminals (1, 2) for the supply of electric current and at least one leg (3) which extends between the terminals and which includes a glow zone. The invention is characterized in that the glow zone has different diameters along different sections (6-11, 14-17) of the leg (3; 4, 5).
REFERENCES:
patent: 3269806 (1966-08-01), Fitzer et al.
patent: 3373239 (1968-03-01), Rubisch
patent: 4267435 (1981-05-01), Best
patent: 4720624 (1988-01-01), Kikuchi et al.
patent: 834739 (1960-05-01), None
patent: 2332844 (1999-06-01), None
patent: 2332844 (1999-06-01), None
Fuqua Shawntina
Mangels Alfred J.
Sandvik Intellectual Property AB
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