Lockable microelectromechanical actuators using thermoplastic material, and methods of operating same
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United States of America Patent
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Apr 9, 2002
Grant Date -
N/A
app pub date -
Apr 5, 2000
filing date -
Apr 5, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Lockable microelectromechanical actuators include a microelectromechanical actuator, a thermoplastic material that is coupled to the microelectromechanical actuator to lock the microelectromechanical actuator, and a heater that melts the thermoplastic material to allow movement of the microelectromechanical actuator. When the thermoplastic material solidifies, movement of the microelectromechanical actuator can be locked, without the need to maintain power, in the form of electrical, magnetic and/or electrostatic energy, to the microelectromechanical actuator, and without the need to rely on mechanical friction to hold the microelectromechanical actuator in place. Thus, the thermoplastic material can act as a glue to hold structures in a particular position without the need for continuous power application. Moreover, it has been found unexpectedly, that the thermoplastic material can solidify rapidly enough to lock the microelectromechanical actuator at or near its most recent position.
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