Electrically variable pneumatics structural element
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United States of America Patent
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Nov 13, 2007
Grant Date -
Aug 24, 2006
app pub date -
Feb 9, 2004
filing date -
Mar 21, 2003
priority date (Note) -
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Abstract
The internal pressure p.sub.1 of the hollow body of a pneumatic structural element that comprises a hollow body (1), at least two traction elements (4) and at least one compression member (2) can be electrothermally varied by means of a fluid. The hollow body (1) houses a void (12) which is filled with a gas (15), and a container (9) which contains a volatile liquid (10). Said liquid (10) can be heated or cooled by means of a heat pump (13). Said heat pump (13) thermally contacts the liquid (10) via lamellas (24). A pressure sensor (14) measures the pressure inside the void (12). A cable (16) links the sensor (14) and the heat pump (13) with control and regulating electronics (23).
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