Hotplate with lifting elements
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United States of America Patent
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Jun 4, 2013
Grant Date -
Jun 4, 2009
app pub date -
Nov 7, 2008
filing date -
Nov 30, 2007
priority date (Note) -
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status (Latency Note)
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Abstract
The hotplate for a workpiece comprises a heatable plate which on a first side comprises a support surface for the workpiece, several lifting elements for the lifting of the workpiece relative to the support surface, wherein each lifting element is moveably arranged in such a manner that the respective lifting element can be retracted with respect to the support surface and/or extended with respect to the support surface and means for heating the plate. The means for heating comprise at least one heating channel which extends on a second side of the plate located opposite the support surface and is filled with a heating fluid. The heating fluid is in contact with the plate. The lifting elements are loaded with the heating fluid in such a manner that the lifting elements are extendable through a predetermined change of the hydrostatic pressure of the heating fluid.
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