Electric heating – Metal heating – Of cylinders
Patent
1974-07-15
1976-04-06
Reynolds, Bruce A.
Electric heating
Metal heating
Of cylinders
219 1067, 219464, H05B 504
Patent
active
039491838
ABSTRACT:
An induction heating apparatus for induction-heating a heated element such as a cooking pot by an exciter which forms an alternating magnetic field excited by the standard line frequency. The apparatus comprises a cover plate made of a high resistant non-magnetic metal, preferably stainless steel, placed above said exciter to face said heated element. Preferred embodiments of the cover plate for absorbing thermal expansion include the formation of a rim between a central region (supporting surface) on which is placed said heated element and a peripheral region; formation of a circular projection or a groove projecting upwardly or downwardly at a peripheral part in said central region or formation of a curved surface in the inner region of the peripheral circular projection or groove of said central region.
REFERENCES:
patent: 2127426 (1938-08-01), Samuels
patent: 2196484 (1940-04-01), Wentworth
patent: 2422057 (1947-06-01), Weinhardt
patent: 3275784 (1966-09-01), Merrett
patent: 3530499 (1970-09-01), Schroeder
patent: 3710062 (1973-01-01), Peters
patent: 3715550 (1973-02-01), Harnden et al.
patent: 3767896 (1973-10-01), Ryan
patent: 3781503 (1973-12-01), Harnden et al.
patent: 3836744 (1974-09-01), Taketo et al.
Hizikata Akemi
Miyazaki Masayuki
Usami Kazuo
Mitsubishi Denki & Kabushiki Kaisha
Reynolds Bruce A.
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