Electronic immersion aquarium heater with spring biased NTC sensor
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United States of America Patent
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Oct 22, 1996
Grant Date -
N/A
app pub date -
Jul 10, 1995
filing date -
Jul 15, 1994
priority date (Note) -
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Importance
Abstract
An electronic immersion heater includes a tube closed at one end that contains in succession from its bottom to its open end: a heating element, an electronic circuit board with the corresponding support and with a temperature sensor, and a hermetic plug. The electronic heater is characterized in that the sensor is pushed into direct or indirect contact with the tube by means of a single helical spring, which furthermore simultaneously acts as a spacer and as an electrical contact, without conventional rheophores, between the temperature sensor and the electronic circuit board.
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Family
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