Compact immersion heater, particularly for aquariums
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 12, 1999
Grant Date -
N/A
app pub date -
Feb 21, 1997
filing date -
May 11, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A compact immersion heater, for aquariums, includes: a watertight tubular container (2); an electric heating component (4); an adjustable thermostat (3); an electric circuit (6, 7, 8, 9) for connecting the heating component, arranged in series to the thermostat, to an external electric power source. The heating component is mounted in a radially offset and longitudinally superimposed position with respect to the thermostat and is accommodated in a torus-like gap formed between the thermostat and the inside surface of the container. The heating component is a resistive component having a laminar structure formed by a layer (16) of an electrically resistive material that is anchored to an electrically insulating and heat-resistant flexible laminar support (15). The layer of resistive material is a PTC ink that is printed onto the support in selected regions (17) that are connected to paths that conduct the electric power supply, directly face the sensitive part of the thermostat, and are adjacent to it.
First Claim
Family
International Classification(s)
Cited Art Landscape
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