Expansion element
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United States of America Patent
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N/A
Issued Date -
Nov 3, 2005
app pub date -
Apr 26, 2005
filing date -
Apr 29, 2004
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
The present invention relates to an expansion element for thermostatic valves, having a housing, an expansion material arranged in the housing, an actuating element, which can be moved relative to the housing when the volume of the expansion material changes, and electrically activated means for heating the expansion material. In accordance with the invention, the means for heating the expansion material has two electrodes, which are in contact with the expansion material, the expansion material is electrically conductive and constitutes an electrical resistor. The invention is employed, for example, in connection with thermostatic valves in coolant systems of motor vehicles.
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