Heating apparatus
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United States of America Patent
Stats
-
Jan 27, 1987
Grant Date -
N/A
app pub date -
May 14, 1985
filing date -
May 15, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A heating unit suitable for mounting in a cooking hob includes a circular tray having a layer of thermally-insulative material disposed therein and a peripheral thermally-insulative wall, within which four infra-red lamps, each containing a tungsten filament, are supported. The tray also includes an inner thermally-insulative wall, which encloses the length of each filament. Between the peripheral and inner walls, two conventional, wire-wound heating elements are disposed. The filaments and the elements are energizable independently and/or concurrently, and series and/or parallel combinations of the filaments and the elements may be switched to provide various discrete power outputs.
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