Device for exerting a pressure developing in stages on a part
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United States of America Patent
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-
Jan 30, 1990
Grant Date -
N/A
app pub date -
Aug 29, 1988
filing date -
Sep 4, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Shape memory alloy spring washers passing from a flat shape to a truncated cone shape on exceeding a given critical temperature (Tc) can be stacked in opposition or in the same sense with identical and/or different washers, in order to bring about a development in stages of the pressure (P) applied by the stack of washers when the temperature (T) varies. These washers can advantageously be used for the bonding and polymerization of composite material parts (C), because they make it possible to simultaneously treat several parts in the same ventilated oven and in a less expensive manner.
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